查询词典 acetic aldehyde

Methodsa gradient hplc system was used in the quantitative analysis of the danshensu ,protocatechuic aldehyde and salvianolic acid b in 6 hours,and its ph was determined at 25℃for 24 hours.

方法采用高效液相色谱法梯度洗脱测定配伍液中6 h内丹参素、原儿茶醛、丹酚酸b的含量。并在25℃时24 h测定配伍液的ph值。

Objective To study the effects of carbon, nitrogen, and phosphate sources on the growth of Salvia miltiorrhiza adventitious roots and the contents of tanshinone Ⅱ and protocatechuic aldehyde.

目的 研究碳源、氮源和磷源对丹参Salvia miltiorrhiza不定根生长及其有效成分丹参酮Ⅱ和原儿茶醛量的影响。

Methods:The RP-HPLC method was applied and protocatechuic aldehyde was used as the internal standard substance.

采用RP-HPLC法，以原儿茶醛为内参照物，色谱柱：Luna C_(18)柱(250mm×4.6mm，5μm)，流动相：0.05%磷酸水溶液-乙腈，梯度洗脱程序为：0min时A-B(100∶0)，80min时A-B(67∶33)，85min时A-B(60∶40)，100min时A-B(60∶40)，流速：1.0mL·min~(-1)，检测波长：280nm。

Results:The contents of tanshinoneⅡA and protocatechuic aldehyde in alcoholic extract of raw products were the most.

结果：丹参酮ⅡA和原儿茶醛以生品醇提最高；丹参酮ⅡA以其生品水提最低，而原儿茶醛以白酒炙后水提最低。

A new method was reported for the determination of tanshinol and protocatechuic aldehyde in dripping solution by microfluidic chip with contactless conductivity detection.

建立了微流控芯片非接触电导检测法测定丹参滴注液中丹参素与原儿茶醛含量的分析方法。

Results There were almost no changes in pH and the contents of danshensu、protocatechuic aldehyde in compatible solution within 6 hours.

结果注射用丹参与0.9%氯化钠注射液、5%葡萄糖注射液配伍后溶液6h内pH值变化较小；配伍液不溶性微粒数远远高于原注射液的不溶性微粒数(P.01)；主要成分丹参素钠和原儿茶醛的含量基本无变化。

Resultsph value and the contents of danshensu,protocatechuic aldehyde and salvianolic acid b had no significant change in compatible solution.

结果丹红注射液与10%氯化钾配伍后24 h内ph值无显著变化，丹红注射液中有效成分丹参素、原儿茶醛和丹酚酸b的含量6 h内基本稳定。

In chapter 6, a simple and rapid method for the simultaneous determination of three water-soluble compounds,β(3, 4-dihydroxyphenyl) lactic acid, protocatechuic acid and protocatechuic aldehyde, in radix Salviae Miltiorrhiza injection was firstly developed.

在第六章，我们首次建立了一种简单的、快速的同时测定丹参注射液中三种水溶性化合物丹参素、原儿茶酚和原儿茶醛的毛细管区带电泳法。

Chemical Products, Chemicals: inorganic acid, sodium compounds, potassium compounds, calcium compounds, barium compounds, manganese compounds, chromium compounds, nickel compounds, zinc compounds, magnesium compounds, aluminum compounds, single-element chemical products, even items of the five machines Chemical products, paraffin, waxes other chemicals, coke, oil and chemicals, alcohol, aldehyde chemicals, acetate chemicals, ketones, ethers, phenols chemicals, alkanes, alkenes, acetylene chemicals, amine chemicals, aromatic chemicals, Miscellaneous organic chemicals, acid chemicals, other chemicals, dyes and intermediates, pigment materials, plastic materials, agricultural chemicals: fertilizers, pesticides, growth agents, plastic sheeting, etc., equipment, pyrophoric alloys, articles of combustible materials , chemical reagents, rubber, imports, machinery and equipment, machinery and equipment, apparatus; photographic equipment; printing equipment; general machinery; textile equipment; Machine Components; a variety of equipment, Shanghai, Zhejiang, Guangdong, Jiangsu high-quality, low-carbon The new satellites technology goods manufacturers, exporters, wholesalers, traders, USA, United States importers, wholesalers, retailers, investors, designers, planners, please contact our office, George Chen, Mobile :+

化工产品类，化工原料：无机酸，钠化合物，钾化合物，钙化合物，钡化合物，锰化合物，铬化合物，镍化合物，锌化合物，镁化合物，铝化合物，单元素化工品，什项五机化工品，石蜡、蜡类其他化工品，焦、油化工品，醇、醛化工品，酯化工品，酮、醚、酚化工品，烷、烯、炔化工品，胺化工品，芳烃化工品，什项有机化工品，羧酸化工品，其它化工原料，染料及中间体，颜料原料，塑料原料，农用化工品：化肥，农药，生长剂，农膜等，器材，引火合金，易燃材料制品，化学试剂，橡胶，进口，机械设备，机械及设备，仪器；摄影器材；印刷器材；通用机械；纺织器材；机械基础件；各种成套设备，中国上海，浙江，广东，江苏优质，低碳，新颗科技商品生产商，出口商，批发商，贸易商，美国，美利坚合众国进口商，批发商，零售商，投资商，设计师，规划师们，请与我处联系，George Chen，Mobile：+

Organocatalyst ; N-methylimidazole ; aromatic aldehyde ; multi-component reaction ; Knoevenagel condensation reaction ; ionic liquid rhodanine ; decahydroacridine

广东省自然科学基金；国家自然科学基金有机小分子催化剂； 1-甲基咪唑；芳香醛；多组分反应； Knoevenagel缩合反应；离子液体；罗丹宁；多氢吖啶

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48