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- Taiwania (Taiwania cryptomerioides) and eucalyptus (Eucalyptus grandis) chips were pulped with either a 50% aqueous ethanol solution or a 50% alkline aqueous methanol solution containing l.5N NaOH. 摘要台湾杉与玫瑰桉分别以50%25乙醇水溶液及含1.;5N氢氧化钠的50%25甲醇水溶液制浆。
- In aqueous ethanolic solution of sodium polysulfide and sodium hydroxide, p-nitrotoluene isconverted to p-amino-benzaldehyde. 对硝基甲苯与多硫化钠在乙醇-水溶液中加热,可以生成对氨基苯甲醛,这是目前工业上合成对氨基苯甲醛的最佳途径。
- A spectrophotometric method based on the charge-transfer reaction between azithromycin and alizarin redin aqueous ethanolic solution was established for the determination of azithromycin tablets. 阿奇霉素与茜素红在乙醇-水溶液中发生荷移反应,由此建立了荷移分光光度法测定阿奇霉素片的含量。
- aqueous ethanol solution 乙醇水溶液
- Salification was generated from choroacetic acid and KOH aqueous solution first,then the dehydroabietylamine ethanol solution was dropped slowly into it ... 对产物结构进行了表征,并发现产物对黄孢原毛平革菌、裂褶菌、蜜粘褶菌,云芝和绵卧腐孔菌有明显的抑制效果。
- Titrate the mixed solution with ethanol solution of acetic acid. 用乙酸的乙醇溶液滴定溶液的碱浓度。
- The highest extraction rate of flavonoids can be obtained with aqueous ethanol refluxing. 该方法与索氏提取法、溶剂分批提取法等进行了比较,以采用乙醇回流浸提法较好。
- The performance of biomass absorbent of aqueous ethanol dehydrated by evaporation was investigated by constant-temperature fixing absorption bed. 使用恒温固定吸附床对乙醇蒸汽脱水的生物质吸附剂的吸附性能进行研究。
- Ethanol solution can emit visible fluorescence when induced by UV light. 乙醇溶液在紫外光照射下可以发射荧光。
- With egg yolk as raw material,extracted with aqueous ethanol and ether,and removing water and oil with acetone,a crude phospholipids mixture was obtained. 本文以鸡蛋的卵黄为原料,采用含水乙醇与乙醚提取,通过丙酮脱水去油,得到粗品卵磷脂;
- The decolorization and properties of active carbon have been studied in the zein ethanol solution. 系统研究了玉米朊的活性炭脱色工艺。
- To use PVB methanol solution to test its gelling temperature is more sensitive than to use PVB ethanol solution. 发现了用PVB甲醇溶液测定冻胶化温度较乙醇溶液更灵敏。
- Where, W1 = mg ethanol;W2 = 100 ml.of the unknown;Cs = Concentration of standard ethanol solution (here it is 50mg/100ml. 式中:W1=乙醇的毫克;W2=100毫升的未知物;Cs=标准乙醇溶液的浓度(50mg/ml)
- A new heterogeneity racemization technology of valine in an ethanol solution of dibenzoyl-L-tartaric acid was described. 研究了缬氨酸在二苯甲酰L-酒石酸乙醇溶液中的非均相消旋新工艺,进行了消旋动力学研究,并与碱液消旋进行了比较。
- Nano-scaled zinc sulfide (nano-ZnS) has been successfully prepared via a simple heterogeneous reaction of zinc chloride ethanol solution and hydrogen sulfide gas. 用新颖、简单的异相化学反应方法,在乙醇体系中制备了硫化锌纳米粒子。
- The microwave-assisted extraction of seabuckthorn leaves flavonoids is investigated using single factor and orthogonal test in the 70% ethanol solution. 以体积分数70%25的乙醇为萃取液,用单因素分析与正交试验相结合的方法,研究了微波萃取沙棘叶黄酮。
- Method: Solid dispersion systems of ursolic acid in PVP-K30 or Poloxamer 188 were prepared by co-evaporation of the drug and PVP-K30 or Poloxamer 188 ethanol solution. 方法：选择聚乙烯吡咯烷酮K30、泊洛沙姆188两种载体，用溶剂法制备乌索酸固体分散体；
- Methods: Qualitative analysis by TLC, a mixed solvent of n-hexane - ethyl acetate - acetic acid(6:4:0.25) was employed as the mobile phase,color developing agent was 10%sulfuric acid and ethanol solution. 方法:薄层鉴别采用硅胶G薄层板;展开剂:正己烷-醋酸乙酯-冰醋酸(6:4:0.;25);显色剂:10%25硫酸乙醇溶液;
- Nano-sized silicalite-1 zeolite crystals have been synthesized using TPAOH ethanol solution as a template in a clear synthesis solution. The factors influencing particle size have been investigated. 一采用廉价四丙基氢氧化铵乙醇溶液作模板剂,在澄清溶液中成功合成了均匀的100nm Silicalite-1沸石,并对合成液的组成、晶化温度和晶化时间等条件进行了优化,确定了最佳合成条件。
- In this paper, according to three key factors including yields of TP, catechin and caffeine (Caf), two extraction processes with boiling water or 80% ethanol solution were compared. 本文以茶多酚、儿茶素、咖啡碱的得率为指标,比较浸提温度、时间、液固比、浸提次数对热水浸提和80%25的醇水溶液浸提两种方法的不同影响获得两种浸提方法的适宜工艺条件。
