查询词典 methanol

By adopting the method of stepwise synthesis, this paper synthetizes 1,3 - diaminopropanein 2-Hydroxy-3-methoxybenzaldehyde Zn-Sm heteronuclear bimetallic in Anhydrous methanol solution.

本文采用分步合成的方法，在无水甲醇溶液中合成了1，3-丙二胺缩邻香兰素Zn-Sm异核双金属配合物。

When 45% methanol solution containing 0.5 mmol/L hexamethylene tetraamine was used as the pump carrier, the pump flow rate and output pressure achieved 0.58 mL/min and 0.79 MPa at 4950 V, respectively. By using the pump carrier as the mobile phase, benzene and naphthanlene were separated on baseline by the EFA system.

在4950 V的外加电压下，以含0.5 mmol/L六亚甲基四胺的45%甲醇溶液为泵载流，电渗泵的流量和输出压强分别为0.58 mL/min和0.79 MPa，以泵载流为流动相，该系统对苯和萘进行了反相色谱分离。

Hippuric acid can be well separated by RP-HPIC on ODS column and with methanol-water- acetic as mobile phase and UV detector at 254nm.

在生产酸牛乳时，原料乳中马尿酸脱甘氨酸生成苯甲酸，从而使酸牛乳中天然苯甲酸含量增加[2]。

METHODS The methanol extract of the pericarp of Illicium temstroemioides was separated with various chromatographic techniques,and their structures were elucidated by physiochemical and spectral analysis.

利用核磁共振、质谱、红外等方法对分离得到的单体化合物进行结构鉴定。

The molecules involving azo and imino functional groups can coordinate with Hg2＋ to result in a large blue shift from 453 to 363 nm corresponding to a notable color change from orange to pale yellow in aqueous methanol solution (H2O/CH3OH＝1/4, V/V), which can be applied to naked eye detection of Hg2＋.

这些传感器分子包含偶氮和亚胺功能基团，在水/甲醇溶液（体积比1/4）中，可以与汞离子配位，使紫外-可见光谱中吸收峰发生由453到363 nm的蓝移，引起一个明显的溶液由橙色到淡黄的颜色变化。因而，这些传感器有肉眼检测汞离子的潜在应用。

The all samples were extracted with 80% methanol and determined for contents of IAA^ ABA GA, and iPA by indirected ELISA.

结果表明：(1)在花器官中，IAA、ABA、GA_3、ZR、iPA在不育系和保持系间的变化趋势不一致，含量也有很大差异。

A new eucaryotic expression system of recombinant PoIFN-γ was also constructed so that the denaturalization and refolding process is avoided. The target gene coding PoIFN-γ2 mature protein was subcloned into expression vector, transformed into Pichia pastoris, The His〓 Mut〓 phenotype transformants were screened, fermented in flasks and induced by 1％methanol. The expressed product in culture solution and sedimentation have antiviral activity on VSV and immunological activity proved by indirected immunofluorescence antibody and Dot blotting assay.

为了构建可对表达产物修饰、加工的真核表达系统，使表达产物具有自然干扰素的活性，无需变性、复性，我们将PoIFN-γ2成熟蛋白基因连接酵母整合表达载体，电转化毕赤酵母，筛选了His〓Mut〓表型转化子，摇瓶培养，1％甲醇诱导表达，培养上清和菌体裂解上清均有抗VSV病毒活性，经间接免疫荧光抗体检测和Dot blotting鉴定，重组酵母菌诱导表达产物具有免疫活性。

The results showed that the use of tourmaline could increase alcoholic fermentation speed of molasses, the fermentation speed kept increasing with the increase of the use level of tourmaline, however, as its use level was above 11 %, the increase of fermentation speed was inevident; the use of tourmaline had no side-effects on the content of the main impurities including methanol, n-propyl alcohol, isobutyl alcohol, isoamyl alcohol; though it had weight loss after a period of use, it could still promote alcoholic fermentation of molasses.

结果表明，电气石对提高酵母酒精的发酵速率有促进作用，随着使用量的增加，发酵速率也随着提高，当使用量超过11 %时，发酵速率的继续提高不明显；电气石对发酵过程主要杂质甲醇、正丙醇、异丁醇、异戊醇等没有影响；电气石在使用一段时间后，重量减轻，但仍有促进发酵的作用。

Quercetin, quercetin rhamnoside, hyperin, syringoside and eleutheroside E wereisolated from the flower of Acanthopanax senticosus. Searching bioactive natural compound and establishing quality evaluation standard arefocused on this experiment. Using cold immersing of 70% methanol to extract from flower ofAcanthopanax senticosus and integrating macroporous resin, silica gel column chromatography,sephadex gel to abstract. We obtained five monomer compounds (compoundⅠ-compoundⅤ),quercetin, quercetin rhamnoside, hyperin, syringoside and eleutheroside E. That five compoundswere determined by HPLC in eight parts of Acanthopanax senticosus (flower, root, leaf fruit,shoot, new shoot, phloem of shoot, skin of shoot), which provide science bases for establishingquality evaluation system and settle infarctate foundation.

本文以从刺五加花蕾中寻找具有重要生物活性的天然化合物和建立质量评价标准为主要目的，对其化学成分进行研究，采用70％甲醇冷浸的方法对刺五加花蕾中的成分进行提取，运用大孔树脂吸附色谱法、硅胶柱层析法以及葡聚糖凝胶柱层析相结合的方法进行分离，得到5种单体化合物，分别为槲皮素、槲皮素鼠李糖苷、金丝桃苷、紫丁香苷和刺五加苷E；利用高效液相色谱法对这5种化合物在刺五加花蕾中的含量进行了测定；考察了8个部位(花蕾、根、叶、果、茎干、新枝、茎韧皮部、茎皮)中这5种化合物的含量分布情况，并作一比较，为今后建立刺五加质量评价体系提供了科学依据，奠定了坚实的基础。

Using appropriate parameters. Initiatorily, the calculation reaches some conclusions such as optimal reflux ratio and proper excess of methanol.

计算初步确定了最佳回流比，合理的甲醇过量程度，并通过灵敏度分析得出灵敏板的大概位置。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。