查询词典 phenol-phthalein

spectrophotometric method with phenol disulfonic acid ; ultraviolet spectrophotometer ; nitrate nitrogen ; comparison

本文通过对常用的酚二磺酸光度法和紫外分光光度法进行实验比对，同时调查云南省内两种分析方法考核的情况，从而找出两种方法的优缺点，供分析人员在实践中借鉴。l原理1.1酚二磺酸光度法测定的原理方法依据：GB7480一87《水质硝酸盐氮的测定酚二磺酸分光光度法》。用浓硫酸与苯酚作用生成酚二磺酸

It is insoluble in carbon disulphide, soluble in hot aniline and phenol.

它不溶于二硫化碳，溶于热苯胺和苯酚。

Professional sales companies operating bromide products: sodium bromide, sodium bromide, potassium bromide, potassium bromate, Tetrabromobisphenol A, Deca-BDE, ten PBDEs, DBDPE, hexabromodiphenyl Central dodecane, dibromo neopentyl glycol, neopentyl bromide three alcohols, three bromine phenol, octabromodiphenyl ether, brominated polystyrene, bromide, calcium bromide, dibromo succinic acid, dibromo-D ene glycol, bromide surfactants series: Dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, cetyltrimethyl ammonium bromide, octadecyl trimethyl ammonium bromide dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, tetrabutyl ammonium bromide wholesale sales: dimethylolpropionic acid, DL-malic acid, isophthalic acid PIA, glycolic acid, adipic acid.

公司专业经营销售溴化物系列产品：溴化钠、溴酸钠、溴化钾、溴酸钾、四溴双酚A、十溴二苯醚、十溴联苯醚、十溴二苯乙烷、六溴环十二烷、二溴新戊二醇、三溴新戊醇、三溴苯酚、八溴醚、溴化聚苯乙烯、溴化铵、溴化钙、二溴丁二酸、二溴丁烯二醇、溴化表面活性剂系列：十二烷基三甲基溴化铵、十四烷基三甲基溴化铵、十六烷基三甲基溴化铵、十八烷基三甲基溴化铵、十二烷基三甲基氯化铵、十四烷基三甲基氯化铵、十六烷基三甲基氯化铵、十八烷基三甲基氯化铵、四丁基溴化铵批发销售：二羟甲基丙酸、DL-苹果酸、间苯二甲酸 PIA、羟基乙酸、己二酸。

RESULTS: Dryopteris Crassirhizoma Nakai after being curshed has the maximum in the yield, the total phenol of carbonized products, the water extract and alcohol extract.

结果 ：生品出膏率，炭品总酚类、水浸出物、醇浸出物含量均以切碎品最高。

The results showed that the particle-electrodes had good electrocatalytic activity and stability for the degradation of phenol.

结果表明，该粒子电极对目标污染物苯酚显示了良好的电催化活性和稳定性，在相同反应条件下，不加粒子电极的二维电解时苯酚的降解率为55.6%，而三维电催化氧化过程中降解率为90.8%，大大提高了苯酚去除效果。

DISCUSSION Remifentanil phenol for outpatient analgesic enteroscope is safe and feasible.

讨论］ 瑞芬太尼应用于镇痛肠镜检查安全可行。

Because of its irritating effect on humans, the use of phenol as a gen eral antiseptic has been largely discontinued.

由于苯酚对人体带有刺激性作用，它基本上已不再被当作常用的防腐剂了。

To synthesize the octreotide, Phe-Leu-Glu-Glu-Leu and C_(15)H_(31)-CO-Lys-Thr -Thr-Lys-Ser peptides, the strategies are as followings: Fmoc- group as protective group for α-NH_2; TBTU, DIEA and HOBt as coupling reagent; and ethanedithiol -phenol - thioanisole - H_2O - TFA ( 2.5:5:5:5:82.5 , V/V ) as cleaving solution.

采用Fmoc固相合成法，以苯并三哗四甲基脲四氟硼酸盐、二异丙基乙胺和1-羟基苯骈三氮唑为缩合剂；苯酚—乙二硫醇—苯甲硫醚—水—三氟乙酸(5：5：2.5：5：82.5，V/V)为切割试剂，合成了奥曲肽、Phe-Leu-Glu-Glu-Leu及C_(15)H_(31)-CO-Lys-Thr-Thr-Lys-Ser三种小分子多肽，并对奥曲肽的合成规模进行了放大。

The elements in bamboo liquid such as ethylic acid, phenol compounds and alcohol can clean skins and diminish inflammation with their effects of antibiosis, bacteriostasis.

竹醋中的&醋酸&、&酚系化合物&及&醇&等成份，具有清洁皮肤和抑菌、抗菌、消炎等功能。

Objective To clone the flagellar biosynthesis genes fihA, flhB2 and fliR of Leptospira interrogans and construct their prokaryotic expression system Methods Extract genomic DNA from Leptospira interrogans serogroup Icterohaemorrhagiae serovar Lai strain 56601 by phenol-chloroform method and amplify fihA, flhB2 and fliR gene fragments by high fidelity PCR.

目的 克隆问号钩端螺旋体鞭毛相关基因flhA、flhB2和fliR，并构建其原核表达载体。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。