酸值

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。

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。

The invention belongs to the technical field of environmental protection and in particular relates to a method for utilizing the fermentation effect of microbe in remained sludge to increase the propionic acid content in organic acid which is produced under the normal temperature through replenishing carbohydrate and controlling the pH value when in reaction, the method takes the remained sludge of sewage treatment plants and mixture of urban putrescible organic waste which is produced in everyday life as raw materials.

本发明属于环境保护技术领域，具体涉及一种通过补充碳水化合物和控制反应时的pH值，以污水处理厂的剩余污泥和日常生活中产生的城市易腐有机废物的混合物为原料，在常温条件下利用剩余污泥中微生物的发酵作用提高所生产有机酸中丙酸含量的方法。

The study results indicated that this new method could be used for quantitative determination of pyrogallic acid in production for its simpleness, cheapness, veracity and stability.

研究结果表明，新方法具有操作简便，成本低廉，测定值稳定等特点，适用于焦性没食子酸工业生产的产品含量分析。

The study results indicated that this new method could be used for quantitative determination of pyrogallic acid in production for its simpleness, cheapness veracity and stability.

研究结果表明，新方法具有操作简便、成本低廉、则定值稳定等特点，适用于焦性没食子酸工业生产的产品含量分析。

In addition, the pH value of the reaction media remarkedly influenced the catalytic activity of hydrogenation.

另外，对次膦酸形成的硝基物来说，反应介质的pH值对催化加氢反应有明显影响。

Results indicated that the pH,composition and ruminal degradation of corn straw in groups treated with cellulose and multiple lactobaci...

固体调制剂与液体调制剂显著降低了 p H值、NH3-N及丁酸含量(P 。0 5 )，显著增加了乳酸含量(P 。0 1 )。固体调制剂和液体调制剂显著提高了玉米秸快速降解的 DM、NDF成份 P 。0 1

It was found that, with the increasing of volume fraction of silver and conductor phase, sheet resistivities descend and there are critical thresholds. The average partical size of bismuth ruthenate and PbO-B_2O_3-SiO_2 glass was researched.

研究了各相粉体平均粒径对膜层性能的影响，结果表明：钌酸铋平均粒径越小，膜层的方阻值越小，电阻温度系数偏正，重烧变化率越接近零值，球磨工艺的极限平均粒径为0.56μm。

Using volatile acid and alkali to regulate the pH of pressed juice from bamboo shell,saltless Fraction Ⅰand Fraction Ⅱwere got separately.the residue of squeezed banboo shell was used as paper making material and medium for cultivation mushroom.

采用挥发性酸和碱调节鲜笋壳压榨液 pH值，分别获得无盐Fraction Ⅰ和fraction Ⅱ；其压榨后的蒲渣作为造纸原料和栽培食用菌的基质；对分离Fraction Ⅰ和Fraction Ⅱ后的汁液，加入Fe2 +并超滤浓缩，经硫酸铵盐析和丙酮分级后，进行CM 2 2纤维素离子交换柱层析，以 pH5 。2乙酸钠分级洗脱，获得RZ为 3 。0以上的高纯竹笋过氧氧化物酶。

Soil organic matter, total nitrogen, available nitrogen and pH are measured with high temperature potassium dichromate oxidation-capacity, semiminim karl method, alkaline hydrolysis pervasion method, and the potentionmeter method respectively.

用五点混合取样法采集广西桂林毛村岩溶区和非岩溶区典型林地、灌草丛地和耕地的0~20cm，20~40cm土壤样品，以高温外热重铬酸钾氧化－容量法测定有机质含量，半微量凯氏法测定全氮含量，碱解扩散法测定有效氮含量，电位法测定pH值。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。