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- 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。
- 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。
- 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。
- 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。
- 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。
- The influences of the factors,such as ethanol solution,sodium hydroxide, propylene oxide,reaction temperature,reaction time on apparent viscosity and water insoluble substance of HPG are studied. 研究了合成过程中乙醇溶液、氢氧化钠、环氧丙烷、反应温度、反应时间等因素对产品表观黏度和水不溶物含量的影响。
- 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。
- The extracts were eluted by 70%,80%,90%ethanol solutions in order in silica gel column chromatography and the refined flovonoids solution was obtained. [方法]采用乙醇回流法提取云南13种蕨类植物根状茎(根)及叶中的总黄酮,经硅胶柱层析,依次用浓度70%25、80%25、90%25的乙醇溶液洗脱,得到精制黄酮溶液,利用紫外光分光光度法测定总黄酮的含量。
- Fluorescence emission spectra showed that the peak of fluorescence emission was not shifted but the fluorescence intensity in papain increased in ethanol solutions. 荧光发射光谱表明，木瓜蛋白酶在乙醇溶液中发射峰位几乎没移动，但发射强度明显增高。
- It may take a long time to find a solution to the problem. 也许要花很长时间才能找到解决这个问题的办法。
- Fluorometic Determination of Ethanol Solution 乙醇溶液的荧光光谱研究
- 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。
