甲醇

The multiphoton ionization mechanisms of hydrogen-bonded cluster systems: pyrimidine-〓 and pyridazine-〓 were studied using TOF mass spectrometer at 355 and 532nm laser.

本文利用355，532nm波长的激光和TOF质谱首次研究了嘧啶-甲醇（〓，pyrimidine-〓）以及哒嗪-甲醇（〓pyridazine-〓）氢键团簇体系的多光子电离机理。

For example, the ratio of pyrogenation will reach 90% at around 600℃, and we can get 1.8 mol hydrogen from one mol methanol.

温度在600℃左右时，甲醇热分解率达90%，每摩尔的甲醇可产生1.8摩尔左右的氢气。

In this work, the potentials of the hyphenated HPLC-DAD-SPE-CryoNMR-MS techniques were demonstrated in characterization and structural elucidation using the complex extracts of rosemary ( Rosmarinus of ficinalis L.) as an example.

本文以迷迭香的两种溶剂提取物（氯仿/甲醇=3/1和50%含水甲醇）作为模型样品，通过分析其中的一些化学成分，展现了HPLC-DAD-SPE-CryoNMR-MS无缝联仪技术在确定代谢物结构方面的应用潜力。

As shown in previous studies Hibiscus sabdariffa L. is a nature plant containing a lot of pigments that was found to possess antioxidative activity.In this study, we evaluated the antioxidative activity of the Hibiscus anthocyanins by measuring their effects on LDL oxidation and anti-atherosclerotic abilities.

本实验以乾燥洛神花为材料，以调酸的甲醇溶剂萃取其花青素，发现甲醇萃取率为5％；纯度测定约有85~95％，另以HPLC分析后发现其花青素主要分为两类，推测分别为delphinidin系及cyanidin系，其花青素含量分别为3.7％及0.9％。

Two solvent systems which were MeOH -50% MeOH and 95% alcohol - water were studied by the content of salvianolic acid B and salviol ⅡA and the icon of Salvia miltiorrhiza Bge..

采用C18柱，乙腈-0.35%冰醋酸溶液梯度程序洗脱，以丹参酮ⅡA和丹酚酸B含量为指标并结合图谱，综合考察甲醇-50%甲醇、95%乙醇-水两套溶剂系统提取丹参药材的效果。

To synthesize the results of the research above, we found that the well result of the study on activities and detergency are extracted by methanol extracts. It had ability of antioxidant and anti-iflammatory activity on the biological activities. Sapindus mukorossi were surface activity well and stretched less damage on hair. It will raise application value of Sapindus mukorossi on cosmetics.

综合以上之结果，甲醇萃取物为乾燥粉末可增加原料保存性，且发现在生物活性及清洁力试验上皆以甲醇萃取物之效果最好，具抗氧化、抗发炎能力，此外存在表面活性优良性质，对头发强度之伤害性小，因此增加其在化菻~上之应用潜力。

In this thesis, the reaction of methanol conversion into hydrocarbons on HZSM-5 and SAPO molecular sieves, which is of great importance to industry, is selected as probe reaction to get deeper insights into the structure of solid catalysts and the interaction of reactants with catalysts during adsorption and catalytic reaction by solid state NMR.

本论文主要以固体NMR为研究手段，以甲醇制烃类作为探针反应，详细研究了催化剂的结构、吸附过程中反应物与催化剂的相互作用、反应过程中反应物与催化剂的相互作用，主要取得了如下结果： 1 原位MAS NMR实验结果表明，甲醇制烃类的过程是通过&碳池&机理来实现，&碳池&的组成随反应的进行而变化，在反应前期，&碳池&由饱和烃类构成，随着反应的进行，饱和烃类和不饱和烃类共同组成&碳池&。

The effects of four different solutions (methanol, ethanol, chloroform, and tetrachloromethane) for the extraction of paeonol were investigated. With the consideration of toxicity, extraction ratio, and the influence on separation, methanol was selected as extractant.

考察了甲醇、乙醇、氯仿、四氯化碳4种溶剂提取丹皮酚的效果，综合考虑提取剂毒性、提取率和对分离的影响，选择甲醇作提取剂。

It is involved in the synthesis of triphenylcarbinol. In this pater, based on the principle of the ultrasonic wave radiation and its advantages, triphenylcarbinol was synthesized by ultrasonic irradiation. We have researched the influence on the synthesis of triphenylcarbinol for the solvent of different purity.

三苯甲醇的制备中就涉及到了格氏试剂的合成，本文根据超声波辐射作用的原理及其优点，利用超声波辐射法合成了三苯甲醇，考察了不同纯度的乙醚溶剂对产物合成的影响。

Triarylcarbinols such as triphenylcarbinol and certain diarylcarbinols give intensely colored salts when treated with acid in suitable media.

三芳基甲醇和某些二芳基甲醇。在适当的介质中。用酸处理时会产生颜色很浓的盐。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。