查询词典 ethanol

The results showed that the ash content and the contents of cold water and hot water and benzyl ethanol extractives of Albizia falcataria are lower than that of Gmelina arborea, the contents of lignin and cellulose of Albizia falcataria is similar to that of Gmelina arborea. On the other hand, the contents of 1%NaOH extractive and hemicellulose of Albizia falcataria are higher than that of Gmelina arborea.

结果表明，南洋楹的灰分、冷热水抽出物和苯-醇抽出物含量低于石梓，Klason 木素和纤维素含量两者相当，但是南洋楹的 1％ NaOH 抽出物和戊聚糖含量明显高于石梓。

Methods:The fresh porcine blood added sodium citrate was used for extracting of heme. The methods of hematolysis by water,ethanol and supersonic wave were compared.

新鲜抗凝猪血为原料，比较了水溶胀法、乙醇法以及超声波法对红细胞溶血效果，以盐酸丙酮配比，盐酸丙酮与溶血液体积比对猪血中血红素提取的影响。

The results indicated that 40% ethanol and water can dissolve Berberis heteropoda pigment better; the pigment is stable in acidic condition; iron ion can increase the absorbency of the pigment; the influences of reducing agent is greater than oxidizer＇s.

结果表明，小檗色素在40％的乙醇溶液及水中的溶解效果最好；在酸性条件下色素较稳定；铁离子对其有增色作用；氧化剂、还原剂对色素稳定性均有影响，其中以还原剂影响较大。

The results indicated that the water or 50% ethanol extracts from peonies petals could reduce light absorption of DPPH and OH initiated hydroxylation of salicylate, and inhibit O2(superscript -) mediated light chemical reduction of nitroblue tetrazolium effectively, and lipid peroxidation of polyunsaturated fatty from yolk lipoprotein, in which DPPH scavenging activities of 6 peonies water extracts were hinger than that of 200 μg/mL BHT, but lower than 80 μg/mL Vc. In 4 kinds of detecting systems of antioxidation, the peroxidation activity of deep colored flowers of peonies was higher than that of light colored flowers of peonies.

牡丹花瓣提取液能明显抑制卵黄组织匀浆的脂质过氧化作用，降低DPPH的吸光值、抑制O2介导的NBT光化学还原及OH作用下的水杨酸羟基化作用，其中牡丹花瓣提取液清除DPPH自由基的活性高于200μg/mL BHT，但低于80μg/mL Vc.6个品种的牡丹花瓣提取液，在4种测定系统中均具有一定程度的抗氧化能力，且水提取液的抗氧化活性略高于体积分数50%乙醇提取液，深色花瓣提取液对不同自由基的清除能力较强。

Objective To study the chemical constituents from the 60% ethanol extract of the roots of Campylotropis hirtella Schindl.

摘要摘要：目的研究毛杭子梢体积分数为60%的乙醇提取物的化学成分，寻找新的抗前列腺增生的活性化合物。

Results: The optimal preparing process is: making Panax to be powder; extracting Rheum and Coptis respectively with ethanol; decocting Astragalus, Hirudo and Polyporus with water; then making all the extractions to be powder and mixing with Panax powder, then putting them into capsules. The content of Ginsenoside 〓 in one capsule should be not less than 0.235mg. Panax and Coptis are the main compositions that make Liuwei Tangshen Capsule reducing the blood sugar.

结果：确定最佳制备工艺为：人参粉碎成细粉，黄连、大黄分别用乙醇提取，黄芪、水蛭、猪苓三药用水共煎，各提取物干浸膏细粉与人参细粉混匀，装胶囊；有效成分含量的控制标准为：每粒胶囊中含人参皂苷〓不低于0.235mg；人参、黄连是六味糖肾胶囊发挥降糖作用的主要药味；六味糖肾胶囊中小檗碱在动物体内的分布和消除速度均较适中，但病理模型动物与正常动物相比吸收较差。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

In the present thesis study, the therapeutic effects of KXS on improving the ability of learning and memory of mice induced by scopolamine hydrobromide, ethanol or cerebral ischemia-reperfusion were investigated using both water maze and passive avoidance performance.

实验结果显示，KXS对以上多种模型动物均具有一定的改善作用，可以通过改善模型动物中枢胆碱能功能、提高中枢抗脂质过氧化能力、拮抗单胺类递质的异常变化等途径起效。

The silicone rubber membrane used in SRMBR is a polymer-made non-porous material. It is hydrophobe and non-permeable to inorganic salt, and has the high selective ethanol permeability. Compared to the conditional separation technology, the pervaporation through SRM has the advantages of low-cost and low-pollution, especially applicable to separating volatile matter from organic matter-water system or organic-organic matter system.

其中的硅橡胶膜作为一种均相聚合物材料无孔膜，具有不透无机盐成分、疏水和对乙醇有较高选择透过性等特点；与传统分离技术相比，硅橡胶膜的渗透蒸发分离过程具有低能耗、污染少等优点，尤其适用于在有机物-水或有机物-有机物体系中分离挥发性有机物组分，现已用于发酵下游产物分离处理的试验研究中，并取得初步成效。

Most of the commercialized hollow fiber membranes are hydrophobic and need to be pre-treated by ethanol before use.

已有的TIPS法制备的商品化中空纤维大多数是疏水的，在使用前必须进行亲水化处理。

"Bird Man's Diary, Butting on the Love Island", Changsha, China

2008年"鸟人日记，顶在爱情岛"，中国长沙

As long as they were in the service of a family of wizards, their magic would remain dormant.

只要他们一天为家庭服务，他们的法力就潜藏不动。