碱液

The preparation process of equisetum pratense total alkaloid includes the following steps: coarse pulverizing equisetum pratense to obtain rough powder, methyl alcohol percolation to obtain percolate, recovering methyl alcohol, concentrating, degreasing by means of petroleum ether, alkalifying concentrate, CHCl3 extracting, soda lye washing, neutral water washing, recovering CHCl3 to obtain rough alkaloid, adsorption by using silica gel column, eluting, recovering solvent so as to obtain refined EPR.

该发明是通过两个步骤来实现的：第一步，提取草问荆总碱，流程：草问荆粗粉――渗漉液――浓缩液(析胶、石油醚脱脂、氨水碱化)――碱化浓缩液(CHCl3萃取)――CHCl3层――CHCl3液(回收CHCl3)――粗生物碱――吸附硅胶柱――精致EPR。第二步，选择实验试剂、仪器、用小鼠作为实验对象，进行中枢神经系统实验，研究作用及作用机制。

This paper mainly studies effect and influence factor that typical corrosive medium (muriatic acid, vitriol, nitric acid, sodium hydroxide, sodium chloride etc.), consistence and condition temperature acts on the material coated on castiron centrifugal interface (PFEP, PPS, CPE, remodeled epoxy). It is studied that powder electrostatic spray, suspend fluid spray, suspend fluid electrophoresis underside coat etc. technics influences on coat quality coated with above four anticorrosive material. The property analysis is done that above four anticorrosive material and three coat technics adapt to centrifugal pump frame and running dynamic condition. In addition, the effect is introduced that castiron centrifugal coated anticorrosive material is used in coal water with alum.

本文侧重研究了典型腐蚀工作介质盐酸、硫酸、硝酸、氢氧化钠碱、氯化钠盐等品种、浓度、环境温度，对铸铁离心泵过流面的聚全氟乙丙烯、改性聚苯硫醚、改性氯化聚醚、改性环氧四种防腐涂层材料的试验使用效果和影响因素分析；研究了四种涂层材料粉末静电喷涂、悬浮液喷涂、悬浮液电泳底涂等涂装方法工艺对涂层质量的影响；四种涂层材料和三种涂装方法对离心泵结构和运行动态环境的适应性分析；介绍了铸铁离心泵防腐涂层在煤矿矾水中的应用效果。

The results indicated that the extraction rate of pretreating test samples with nitric acid was the best.

探讨了不同预处理方法对从泥炭中提取腐殖酸效果的影响，同时也考察了碱提取液及其酸析液对提取结果的影响。

The results indicate that using VG solution to prepare for artery bypass grafting maximally preserves endothelium. In contrast, papaverine impairs endothelium.

VG液作为血管移植过程中的保存液可以最大限度的减少内皮细胞损伤，相反用盐酸罂粟碱溶液可造成内皮细胞的明显损伤。

Erials, such as instable geltime, low stability, poor underwatererosion resistance and so on, and based on the short geltime features of ordinary cement sodium silicate and alkaliactivated salic cementitious materials, an ideal structure model of high performance sodium silicate suspension twoshot groutingmaterial is established. An experiment is undertaken to verify the solidification value of Na+ and watererosion resistance of a grouting material combined with cement and metakaolinsodium silicate. This paper puts forward a compact structure with a dominant ingredient of—Si—Al—H zeolite gel and a minor part of C—S—H by means of IR and SEM microanalysis method.

摘要］ 针对隧道注浆工程用普通水泥水玻璃双液注浆材料存在凝胶时间不稳定、产物稳定性和抗地下水侵蚀性能差等主要问题，结合普通水泥水玻璃快速胶凝和碱激发硅铝质胶凝材料的特点，建立了高性能水玻璃悬浊型双液注浆材料的理想结构模型，并通过水泥复合偏高岭土水玻璃注浆材料的Na+固化性能和抗水溶蚀性能进行了试验验证，结合IR和SEM微观测试分析手段提出其组成结构应是以—Si—Al—H类沸石凝胶物质为主、C—S—H为辅的复合共存密实结构。

Based on simulation principles of two-phase flow,a test rig has been set up for studying multi-phase flow,during flue gas desulfurization ,in topping alkaline atomizers.

根据两相流相似模化原理建立了前置碱雾发生器烟气脱硫颗粒图像测速技术多相流动实验台，运用颗粒图像测速技术对前置碱雾发生器内气液固三相流动进行测量，得到不同工况条件下喷雾射流与固体颗粒的流动结构和流场信息。

Individuals with gene variants or haplotypes associated with low levels of dopamine beta-hydroxylase were more likely to attain cocaine-free urine with disulfiram in a study of heavy users of cocaine.

试验中投予disulfiram的严重古柯碱成瘾患者，如因个体基因变异或基因序列单体变异使体内产生较低的多巴胺贝他水解酵素，较容易得到没有古柯碱的尿液。

The sixth, there were no significantly differences between colchicine groupsand vinblastine groups on the metaphases, in the experiment of prepare mouse4-cell embryo stage single blastomere chromosome specimen by using optimumparameters; and there were significantly differences between colchicine groupsand vinblastine groups on the metaphases (P＜0.05), in the experiment of preparemouse 8-cell embryo stage single blastomere chromosome specimen by usingoptimum parameters.The end, the preparation quality of mouse 4-and 8-cell embryo stage singleblastomere specimen were 2.5, 2.7, 2.4, 1.9, respectively.

低渗液选用0.45％氯化钠时，低渗效果优于选用0.5％柠檬酸钠和0.35％氯化钾的。6、在利用最佳参数制备小鼠4-细胞期胚胎单卵裂球染色体标本时，经统计分析，两种阻断剂的作用效果差异不显著；而在制备小鼠8-细胞期胚胎单卵裂球染色体时阻断剂选用长春花碱的效果优于秋水仙素的(P＜0.05)。7、秋水仙素组和长春花碱组小鼠4、8-细胞胚胎单卵裂球染色体标本制备质量分别为：2.5、2.7、2.4、1.9。

At first, the color stability of different vat dyestuffs as dyed-reagents for viscose was studied. According to the results of experiments, we get to know that the conditions all will influence the color stability of vat dyes, such as the alkali with high concentration, oxidizing with alkali, and soap-washing.

本文首先研究了不同还原染料应用于粘胶纺液着色纺丝加工时的色光稳定性，讨论分析了高浓度碱剂、带碱氧化以及皂洗等工艺条件对还原染料色光稳定性的影响。

Ammonia in the compound solution of amino acid must be removed before L-Arg will be extracted from such solution.

从氨基酸复合液中提取L-精氨酸要进行赶氨，将常见的几种碱在不同温度下对L-精氨酸稳定性的影响进行研究，找出在适宜的工艺操作温度下用于赶氨的碱。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。