查询词典 methyl-glyoxal

An unprecedented combination of photochromism and solvatochromism for a 1,2-bis cyclopentene derivative,1,2-bis(2-methyl-5-formyl-thien-3-yl) perfluorocyclopentene,is observed:1 BMFTP,dissolved in the alcohols,exhibits the largest positive solvatochromic shift in wavelength witnessed to date.

我们发现了醛基二芳烯BMFTP的溶剂变色效应：1在醇类溶剂中，醛基二芳烯分子闭环态吸收波长将会发生显著红移；2在不同溶剂中，醛基二芳烯闭环态吸收波长不同。

The bacterial, mammalian and plant cytochrome P450s involved in metabolism of herbicides are reviewed in this paper. The action modes of cytochrome P450s on herbicides including dealkylation, ring-methyl hydroxylation and aromatic ring hydroxylation etc are summarized.

本文综述了代谢除草剂的细菌、哺乳动物和植物细胞色素P450酶系，概述了细胞色素P450酶系参与除草剂代谢的作用方式：脱烷基化作用、环甲基化羟基化作用和芳环的羟基化作用等。

The NO-3 was used to decolorize the methyl orange solution with ultraviolet radiation.

以NO-3为光催化剂，在紫外灯照射下，对甲基橙溶液进行光催化脱色。

The composite catalyst was characterized by IR,XRD,TG-DSC,SEM,and the catalysis capabilities were evaluated by decolour rate of methyl orange under solar ray.

使用IR，TG-DSC，XRD，SEM等手段对样品进行了表征；以甲基橙为目标物，太阳光为光源，用光解率对光催化剂性能进行了评价。

The copolymers with high molecular weight synthesized from 2-acrylamio-2-methyl propane sulfonic acid and acrylic acid or acrylamide or other water soluble monomers can be used to purification of wastewater and as the dehydrant of organic slurry.

2-丙烯酰胺基-2-甲基丙磺酸和丙烯酸或丙烯酰胺等水溶性单体的高分子量共聚物，可用于废水的净化，还可作为有机污泥的脱水剂。

The use of such "mixed" dialkyl carbonates may give rise not only to similar "mixed" malonates, e.g. the corresponding methyl ethyl phenylmalnate, but also to mixtures of simple malonates.

因此使用这种混合二烷基碳酸酯不仅可能得到相似的丙二酸酯，例如相对应的甲基乙基苯基丙二酸酯，而且可能得到简单丙二酸酯的混合物。

The preparation method comprises the following steps in sequence:(1) metric acetonitrile is added into a dual-bottleneck distilling flask that is provided with a refluxing and condensing tube, and simultaneously, long-chain dialkyl methyl tertiary amine and relevant saturated dihalide are added thereof;(2) nitrogen is pumped for 10 to 20 minutes for deoxidizing;(3) a magnetic mixing reaction is carried through for 10 to 15 hours under the condition of 78 to 83 DEG C.

其制备方法依次包括以下步骤：(1)在装有回流冷凝管的二颈蒸流烧瓶中，加入计量的乙腈，同时按一定比例加入二长链烷基甲基叔胺与相应的二卤代烷；(2)通氮气10-20分钟，排除氧气；(3)在78-83℃条件下磁力搅拌反应10～15h。

A white-threadlike solid copolymer has been prepared from maleic anhydride, acrylamide and methyl acrylate initiated by dibenzoyl peroxide in an aqueous solution. The scale inhibiting efficiency of the copolymer to simulated water containing CaCO3 is studied.

以马来酸酐、丙烯酰胺、丙烯酸甲酯为单体，水为溶剂，过氧化二苯甲酰为引发剂合成一种白色丝状固体共聚物阻垢剂。

DCA, or dichloroacetic acid, is an analogue of acetic acid in which chlorine atoms replace two of the three hydrogen atoms on the methyl group.

DCA也叫二氯乙酸或二氯醋酸，是一种类似乙酸的化合物，但乙基团上有两个氢原子被氯原子所取代。

In this paper,we compared the photodegradation efficiency of nano-titania films by using dichloroacetic acid,rhodamine B and methyl orange as the photocatalytic referents and the ultraviolet lamp as the source light to generate the photocatalytic reaction.

针对纳米氧化钛光催化性能研究中缺乏统一有效表征标准的现状，比较了二氯乙酸、罗丹明B和甲基橙三种光催化活性评价物的热稳定性和对紫外光的稳定性，并以氧化钛纳米薄膜为光催化剂，研究了三种评价物的光催化降解效率表征，以及酸碱度、通氧条件等因素对评价物在光催化活性表征中的影响及其机理，归纳了三种评价物对于纳米氧化钛光催化活性表征的优缺点。

Now, however, all children continue in "comprehensive" schools, and the eleven-plus determines which courses of study the child will follow.

然而现在，所有的孩子都要在综合学校继续学习，所以这次考试只是决定他们将要学习哪些课程。

Cultivatable land , and led to a general recognition that development must not be carried at the cost of agriculture .

城区的迅速扩大在很多情况下侵占了宝贵的可耕地，使人们普遍认识到发展不能以牺牲农业为代价。