碱
- 与 碱 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The molecular structural formula of the rhodamine 6G hydrazide salicylal azomethine is shown on the right, and the present invention discloses the synthesization method of the rhodamine 6G hydrazide salicylal azomethine and rhodamine 6G hydrazide salicylal azomethine solution used for the content determination of a small amount of cupric ions in water sample: 0 percent to 98.99 percent of ethanol, 99.99 percent to 1 percent of acetic acid / sodium acetate buffer solution with the pH value of 5 to 9, in which the total concentration of acetic acid is 1 to 100 millimoles per litre, 0.01 percent of N, N-dimethylformamide and 1ppm to 100ppm of rhodamine 6G hydrazide salicylal azomethine, all measured in mass percentage.
罗丹明6G酰肼水杨醛希弗碱,分子结构式如右,本发明公开了罗丹明6G酰肼水杨醛希弗碱的合成方法及其用于水样中微量铜离子含量测定的溶液:0~98.99%乙醇,99.99~1%pH值5~9的醋酸/醋酸钠缓冲溶液,该缓冲溶液中醋酸总浓度为每升1~100毫摩尔,0.01%N,N-二甲基甲酰胺和1~100ppm罗丹明6G酰肼水杨醛希弗碱,均为质量百分含量。
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Eight hydrazone Schiff bases have been synthesized by the reaction of salicylaldehyde, o–vanillin, 2-hydroxy-1-naphthaldehyde with nicotinic or isonicotinoyl hydrazide in anhydrous ethanol respectively; Three thiosemicarbazone Schiff bases have been synthesized by the reaction of salicylaldehyde, o–vanillin, o–hydroxyacetophenon with thiosemicarbazide in hydrous-ethanol respectively.
主要包括以下五部分的工作: 1、以水杨醛、邻香草醛、邻羟基萘甲醛、邻羟基苯乙酮分别与烟酰肼和异烟酰肼按1:1的比例在无水乙醇中反应,制备了八种酰腙类Schiff碱;以水杨醛、邻香草醛、邻羟基苯乙酮与氨基硫脲在水-乙醇混合溶剂中反应,合成了三种Schiff碱配体,并对Schiff碱配体的结构进行了表征。
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Results:Keep the hyoscine butylbromide peak separate from the related substances and determine the limit of the main i mpurity.
结果:丁溴东莨菪碱与其他莨菪碱峰完全分离,从而对主要的杂质氢溴酸东莨菪碱进行了限量检查。
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Calculation results indicated that, same to the experimental results, the complex can intercalate into DNA sequence.
尽管同在错配碱基对附近,由两对错配碱基对组成的双碱基对Ⅱ上的插入并不占优势。
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Caco-2 cell monolayer ; papaverine ; laudanosine ; cepharanthine ; intestinal absorption ; apparent permeability coefficient
Caco-2细胞单层;罂粟碱; N-甲基四氢罂粟碱;头花千金藤碱;肠吸收;表观渗透系数
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And aphid. Results of mixed medicamental test showed, Matrine (1.8%) and avermectin(0.04%) had the best effect on killing pesticide and protecting leaves to Pieris rapae L.;Matrine(0.5%) and avermectin(0.2%) and Matrine(0.5%) and avermectin(0.25%) had the best effect to aphid, their LC50 is 0.08815mg/ml 0.07454mg/ml.
药剂混配试验结果表明:对菜青虫的试验中,1.8%苦参碱+0.04%齐螨素处理杀虫效果、保叶效果最佳;对蚜虫的试验中,0.5%苦参碱+0.2%齐螨素混剂处理,0.5%苦参碱+0.25%齐螨素混剂处理效果最佳,两者致死中浓度分别为:0.08815mg/ml、0.07454mg/ml。
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The Cyt b gene of Takifugu fasciatus was proved to have good homology with other 13 species of fishes recorded in GenBank and it has 96.1% homology with Takifugu rubripes, about 75% with Mola mola and Masturus lanceolatus. The tRNA gene has 69 nucleotides and the tRNA has 72 nucleotides. Their sequences are the same as those of Takifugu rubripes.
用DNA分析软件对暗纹东方鲀与GenBank中10个目13种鱼类的Cyt b序列进行比较分析,显示暗纹东方鲀与这些鱼类的Cyt b基因具有较高的同源性,与同属红鳍东方鲀的同源性最高,为96.1%;与同目不同科的矛尾翻车鲀和翻车鲀的同源性分别为74.1%和74.8%。tRNA基因由69个碱基组成,tRNA基因由72个碱基组成,与红鳍东方鲀相应tRNA的碱基组成完全相同。
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We discussed the syntheses of two different types of plant alkaloids in this thesis. In part A, we aimed at total syntheses in two kinds of aporphine alkaloids, lirioferine and boldine. In part B, we developed a tactic about radical cyclization in polyhydroxylated piperidine synthesis.
中文摘要本篇论文中探讨了两种不同种类植物碱的合成,在A部分中,我们针对阿朴吩类天然物中的鹅掌楸啡碱与波儿丁碱做了各自的全合成研究;在B部分中,我们发展了一种自由基环化策略运用在含多羟的哌啶类化合物之合成上。
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Starting from piperonal, the initial total synthesis of CET involved BischlerNapieralski reaction, 3, 2-sigmatropic rearrangement, unusual Nazarov-type electrocyclization, and autoxidative dehydrogenation of desmethylcephalotaxine to desmethylcephalotaxinone etc.
第一条路线我们以胡椒醛为起始原料,经Bischler-Napieralski反应,[3,2]-σ重排,6-6环系到7-5环系的还原重排,Nazarov氧化环化;碱性条件下脱甲基三尖杉碱到脱甲基三尖杉酮碱的氧化脱氢等20步反应,完成了三尖杉碱的全合成。
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Objective: To develop a RP-HPLC method for determination of three alkaloids in total alkaloids exfracted from Lotus plumule .
中文摘要:目的:建立同时测定莲子心中莲心碱、异莲心碱、甲基莲心碱含量的反相高效液相色谱法。
- 推荐网络例句
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Plunder melds and run with this jewel!
掠夺melds和运行与此宝石!
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My dream is to be a crazy growing tree and extend at the edge between the city and the forest.
此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。
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When you click Save, you save the file to the host′s hard disk or server, not to your own machine.
单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。