甲基

The Tg for a mass ratio mixture of Galpi and sucrose of 0.3/1 was greater than 0 and was similar to that of the same ratio mixture of raffinose to sucrose, indicating that Galpi as well as oligosaccharides plays an important role in glass formation.

甲基肌醇半乳吡喃糖和蔗糖以0.3对1重量浓度混合比例，其玻璃质化转移温度在0℃以上，且近似於相同比例之寡糖类和蔗糖混合，显示甲基肌醇半乳吡喃糖和寡糖类在玻璃质化形成上扮演重要的角色。

Because of the reversibility of methylation, the drugs reducing the level of methylation become a new way to cure leukemia.

由于甲基化的可逆性，降低甲基化水平的药物就成了治疗白血病的新手段。

Results: No methylation was found at 5'CpG island of exon 1 of p16 gene in normal tissue specimens whereas hypermethylation was found in 3 specimens of rhabdomyosarcoma.

结果： 对照7例p16基因第1外显子5'CpG岛3个酶切位点无甲基化， 3例肉瘤组织中存在这3个酶切位点的甲基化现象。

Under the conditions of acidity and dehydration, the abnormal Beckmann rearrangement usually occurs in α-electrofugally substituted cyclic ketoximes and gives a ring opened alkene-nitrile compound.

一。非正常Beckmann重排反应在甾体-17-酮肟中的应用对甾体18-甲基修饰是制备生物学重要的18-去甲基甾体的有效方法之一。

In Chapter 5,the pyrolysis of substituted six-membered ring model compound 4-methyl pyridine has been investigated.Instead of detail theoretical analysis of the reaction mechanism,the general results have been proposed from the products distribution and the combination of the pyrolysis investigation of its analogous pyridine.The major products are H_2,C_2H_2,C_4H_2,C_3H_3N and HCN,here HCN is not a primary initial product at low extent of decomposition.The mole fraction profiles of products have been obtained from the near threshold ionization.The pyrolysis of 4-methyl pyridine is initiated from the methyl abstraction and hydrogen abstraction procedures which are associated with the understanding of the soot formation and the NOX precursor correspondingly.

主要产物为H_2，C_2H_2，C_4H_2，C_3H_3N和HCN，其中HCN为非低温时的热解产物；通过近阈值电离并导出物种随温度变化的摩尔分数曲线，更详细地定量地描述了产物随温度的变化。4-甲基吡啶热解主要从母体脱甲基和脱氢两个初始反应出发，一种趋势是形成大质量数的苯并或杂环的多环化合物，有助于了解炭黑形成过程中的复杂化学过程；另一趋势是开环生成小的碳氢和腈类物质，实验得出的含氮物质的种类及随温度变化有助于了解NO_x的前驱物质的形成及其变化规律。

Trends of DNA methylation frequency and half DNA methylation frequency are ruleless under soil Naphthalin pollution stress in corn whole growth stage.

从玉米整个生长周期看，土壤萘污染胁迫对玉米叶片中DNA全甲级化和半甲基化频率影响均无明显规律；三个时期分别来看，土壤萘污染胁迫对玉米幼苗期和灌浆期DNA全甲级化和半甲基化频率影响较大。

In this research, the activities of CWDE were measured by saccharifying according to the theory that red-brown amino compounds were produced when 3, 5-dinitro salicylic acid and aldehyde were heated together. And the testing conditions were made clear. The activity of Cx should be tested with optimal temperature of 50℃, optimal pH of 4.8, incubation time of 30 min, and optimal substrate of 0.6% CMC-Na. Due to the heat-libality, Cx should be sterilized more than 10 min. The testing conditions of the activity ofβ-G were almost the same with Cx except the substrate of 0.5% salicin and the sterilization time of more than 15 min.

主要取得了一下成果：(1)明确了条锈菌细胞壁降解酶活性测定的条件：羧甲基纤维素酶活性的测定条件为50℃，pH4.8，反应时间30min，底物浓度为0.6%羧甲基纤维素钠，以DNS法测定，且失活酶液的灭活时间应大于10min；β-葡萄糖苷酶活性的测定条件为：50℃，pH4.8，反应时间30min，底物浓度为0.5%水杨苷，以DNS法测定，且失活酶液的灭活时间应大于15min；果胶酶活性的测定条件为：50℃，pH4.8，反应时间1h，底物浓度为0.25%果胶，以DNS法测定，且失活酶液的灭活时间应大于10min。

Then esterification of 3, 7-dimethyl-2-pentadecanol with acetic anhydride, the active component of sex pheromone of pine sawfly, 3, 7-dimethyl2-pentadecanyl acetate was obtained in 83. 4％ yield.

最后，用乙酸酐对3，7-二甲基-2-十五碳醇进行酯化，得到松叶蜂性信息素的活性组分--3，7-二甲基-2-十五碳醇乙酸酯，收率为83.4％。

When the catalyst was triethylamine, the water produced in condensation of isopropanolamine or ethanolamine and butanone was removed with benzene by water segregator, then the dichloroacetyl chloride was dropped.

利用异丙醇胺、乙醇胺、丁酮和二氯乙酰氯为原料，分别合成了两种除草剂安全剂Ⅰ∶3-二氯乙酰基-2，5-二甲基-2-乙基-1，3-噁唑烷和Ⅱ∶3-二氯乙酰基-2-甲基-2-乙基-1，3-噁唑烷。

The results indicate that it is possible to identify and distinguish these siccative oils because the unsaturated acid had changed into azelaic due to oxidation and polymerization during the drying process to make the chromatogram of siccative oils have a typical peak of C9 compound and provide a finger marker of m/z 217, and the concentration ratio of palmitic acid to stearic acid remains constant with time to facilitate the differentiation of oils.

分析时采用了热裂解与甲基化同时进行的技术。分析结果显示，4种干性油的不饱和脂肪酸在成膜后的甲基化产物均为壬二酸二甲酯，离子质量与离子电荷量比值为217，是干性油的特征检测峰。4种油中不同含量的软脂酸和硬脂酸在干性油成膜前后的比值不变，为干性油的甄别提供了可能性。

My first article for Screen Power Magazine, which is to this day is the official magazine of Jackie Chan, was a DVD review of the Hong Kong actioner Gen-X Cops, starring Nicholas Tse and Daniel Wu.

我的第一篇文章为屏幕力量杂志，在对这天是Jackie Chan 正式杂志，是香港actioner Gen X 警察的DVD 回顾，担任主角Nicholas Tse 和丹尼尔吴。

His lips grazed hirs, Now what are you going to do?

他的唇使吃草了 hirs，现在你将要做什麼？