查询词典 sulfuric

The costuslactone and dehydrocostuslactone in the supercritical CO 2 extract of aucklandia were identified by TLC using a mobile phase of petroleum ether,ethyl acetate and benzene (70∶5∶15) and the colour developing reagent of 5% vanillic aldehyde dissovled in sulfuric acid.

用薄层色谱法，以ψ(石油醚∶乙酸乙酯∶苯)=70∶5∶1 5为展开剂，质量分数为 5 %香草醛硫酸为显色剂对木香超临界萃取物中的木香烃内酯与去氢木香内酯进行鉴别；并建立高效液相色谱法同时测定木香烃内酯与去氢木香内酯的含量方法。

Methods Xanthydrol coloring method,sulfuric acid coloring method,and HPLC method were developed for determination of the release of dirithromycin enteric-coated tablets.

分别采用口占吨氢醇显色法、硫酸显色法以及高效液相色谱法测定地红霉素肠溶片的释放度，对每种方法进行方法学的研究和验证。

An alcohol solution containing 10% sulfuric acid was used for colouration in the way of sprayin.

结论该方法准确、简便，可为白术的目的建立白术薄层色谱鉴别方法。

The seed were soaked in hot water under respective temperatures of 50℃, 60℃ and 70℃; soaked by concentrated sulfuric acid respectively for 5min, 10 min, 15 min and treated under ultra low temperature for 2 min, 5 min and 8 min; Then burgeoned under 15℃.

以12份从不同地区采集的达乌里胡枝子种子作为试验用种，采用不同温度(50℃、60℃、70℃)热水浸泡、浓硫酸(5min、10min、15min)浸种和液氮(2min、5min、8min)对种子进行硬实处理，在15℃温度下进行发芽试验。

While chromium may stably exist in either the passive or active state, small amoullt additioll of palladium significantly increases the corrosion resistance of chromium plating in deaerated 5% and 20% sulfuric acid solutions in consequence of spontaneous passivation.

极化曲线和阻抗频谱测定表明，在相应铬镀层处于活化－钝化过渡的电位区间，含钯镀层都表现出净阴极电流；活化溶解与钝化过程随电位的相对发展变化可由低频段容抗圈的演变来推定。

Desulfurize cell deoxidizes the sulfuric acid to its deoxidization form ,then fixs it on the protein for degradation SO2 of flue gas. And the activating energy of immobilized cell to degrade SO2 is 39.5 kJ/ mol.

用活性碳吸附海藻酸钠包埋已二胺交联制备固定化微生物不仅能保持微生物较高的活性，而且还具有高的机械强度、好的传质性和强的耐酸性。

In the second chapter, p-hydrazino-benzenesulfonic acid was prepared by diazotizing sulfanili acid with sodium nitrite. The diazanium salt was then reduced with sodium hydrogen sulfite and acidified with sulfuric acid to give 83.4% product. After several repeated experiments, the reactant and reaction condition are determined.

由于Cy系列试剂的特殊结构使其在荧光标记方面与其他试剂相比有着显著的优点，在生物芯片和蛋白质组学方面得到了广泛的应用，因此文章综述了Cy系列试剂在DNA芯片和蛋白质组学研究中的标记方式以及应用。

The total nitrogen was determined by ultraviolet spectrophotometer, and the absorbency needed to be emendated by A=A(subscript 220nm)-2A(subscript 275nm) The total phosphorus with sulfuric acid-ammonium stibium molybdate-ascorbic acid as the developer was determined by spectrophotometer at 700-720nm wave length.

用紫外分光光度法测定总氮，并采用校正吸光度A=A(下标 220nm)-2A(下标 275nm)对其进行定量；用钼－锑－抗作显色剂，在波长700~720nm下对总磷进行比色定量。

It can transport all kinds of temperature and deepnesses unorgan acid such as nitric ,sulfuric,hydrochloric acid,organ acid,strong alkali,weak alkali,salt solution,different liquidized oil chemical products,organ compounds and others erosive liquid .

该型泵可输送各种温度和浓度的硝酸、硫酸、盐酸、和磷酸等无机酸和有机酸；各种温度和浓度下的氢氧化钠和碳酸钠等碱性溶液各种盐溶液；各种液态石油化工产品、有机化合物，以及其他有腐蚀性的液体。

When the amount of sulfuric acid 1 t/t, the antionxidant (CH8O) capacity of 0.01 t/t and liquid-solid ratio at 4:1, the copper lixiviated efficiency is 94% with 250 r/min and stiring from 3 h at the nomal temperature.

调节浸出液pH为3.7~4.0后，利用固砷剂除砷固砷，砷去除率为98.54%，此时铜的损失为1.34%，除砷后的浸出液制成硫酸铜产品，铜的总收率在85%以上。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。