酸值

The procedure of oxidation of β-ionone by sodium chlorate was studied using gas chromatography-mass spectrometry to analyze the reaction products. And their structures were characterized by IR, MS, 1HNMR and EA.

采用GC-MS方法分析反应产物，对氯酸钠氧化β-紫罗兰酮的反应工艺进行研究，并探讨温度、时间、反应物配比和溶液的pH值对反应的影响。

A study on the optimal fermentation process of producing fluid fertility containing biotechnology fulvic acid from Jowar straws juice;2. The optimum mixture of biotechnology fulvic acid , Azotobacter chooroccum, Phospho bacteria and Silicate bacteria were stu.

本文以甜高粱秸秆汁为原料，通过单菌及混合菌种发酵实验确定了发酵的最佳菌种组合；利用微生物混合发酵确定了发酵菌种的接种比例、接种量、最佳氮源及其添加量；用L_9(3)~3正交设计的方法，确定了发酵的最佳pH值、发酵时间和发酵温度；研究了生化黄腐酸液体肥料和圆褐固氮菌、钾细菌、磷细菌的复配工艺，并在作物上进行了田间试验。

When mixing solutions of acids and bases a person has to realize that the ph scale is logarithmic and not linear.

当混合解酸和基地， 1人已认识到， pH值是对数的规模，而不是呈线性关系。

After four weeks treatment the blood glucose, activities of muscle hexokinaseand liver malate dehydrogenase were tested.

治疗4周后检测大鼠空腹血糖值、肌肉己糖激酶和肝脏苹果酸脱氢酶活性。

After four weeks treatment the blood glucose, activities of muscle hexokinaseandliver malate dehydrogenase were tested.

治疗4周后检测大鼠空腹血糖值、肌肉己糖激酶和肝脏苹果酸脱氢酶活性。

The results showed that molecular weight of malate dehydrogenase was 69 kDa which included two subunits with the molecular weight was about 34 kDa. The optimal pH, temperature and Km were 8.0, 50℃ and 84. 6μmol/L (oxaloacetic acid, pH 8.3), respectively.

结果表明：苹果酸脱氮酶的相对分子质量约为69000，含有2个亚基，每个亚基的相对分子质量约为34000；该酶的最适作用pH为8.0，最适作用温度为50℃；K值为84.6μmol/L（草酰乙酸，pH8.3）。

With the increase of soil pH, Cd desorption decreased rapidly in the presence of oxalic acid and malic acid.

随着pH值升高，草酸、苹果酸以及不含有机酸的对照溶液对红壤中Cd的解吸率都快速下降。

The optimal temperature of D6 is 30℃, the optimal pH ,7.0. The growth of D6 makes use of glucose, malt sugar, lactose, cane sugar, lactic acid, ethanol, glycerin, glycine, but no acetic acid and n-butanol. It can grow in Na2SO4, Na2SOa, Na2S2O3 and S media, and Na2S2O3 is the best substrate.

该菌最适生长温度为30℃，最适pH值为7.0，生长利用葡萄糖、麦芽糖、乳糖、蔗糖、乳酸、乙醇、甘油、甘氨酸，不利用乙酸和正丁醇；可以在Na_2SO_4、Na_2SO_3、Na_2S_2O_3和单质S培养基中生长，并以Na_2S_2O_3为底物时生长效果最佳。

01 Mol/L solution of sodium heptanesulfonate (to adjust PH to 2.2 with the debited orthophosphoric acid)-methyl cyanide (44:56) as mobile phase, detective wavelength was 254 nm.

采用HPLC法以辛基硅烷键合硅胶为填充剂；以0.01 mol/L庚烷磺酸钠溶液（稀磷酸调PH值至2.2）-乙腈(44：56)为流动相；检测波长为254 nm。

Examination revealed the thyroid to be about 50-150 gm and thyroid nodules were present in 3 cases. 3 of them had deaf -mutism, in another, partial deaf -mutism.

全部患者的血清甲状腺素浓度都在正常低值范围，过氯酸钾释放试验时吸~(131)I率均有明显下降，甲状腺素有机合成障碍的环节都可能是碘的氧化缺损。

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。