一乙胺
- 与 一乙胺 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Phosphorylated chitosan (phosphorylate-modified chitosan,P-CTS) was synthesized by the reaction of monosodium orthophosphate with urea in the presence of HAc.
壳聚糖(chitosan,CTS)是由β(1~4)键合的D-葡糖胺残基和数目不同排列无规的N-乙酰基葡糖胺残基组成的线性多糖,是生物界中大量存在的唯一的一种碱性多糖。
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Fluorescence experiment indicated that the characteristic emission intensity of terbium ion was greatly increased and possibly sensitized by gadolinium ion.
铕聚 N 乙烯基乙酰胺是一种无毒、生理相容性好的聚酰胺类高分子,可溶于水和有机溶剂,无低临界溶解温度[3]。
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In order to develop an useful synthestic process, we have synthesized amides with various substitutents. The isoquinoline skeleton was constructed through Bischler-Napieralski reaction, followed by asymmetric reduction of the imine intermediates with a Ru complex to form the only chiral center. Finally, we connected the two phenyl groups by Heck reaction and effectively obtained optically active aporphine alkaloids.
为了发展一套实用的合成方法,我们首先制备於苯环上具有不同种取代基的苯乙醯胺,接著透过Bischler-Napieralski反应进行分子内合环,并利用钌金属对亚胺中间体进行不对称的还原反应,建立出产物中唯一的光学活性中心,最后再利用Heck反应连结两个苯环,就可以顺利得到具有光学选择性的阿朴吩类天然物。
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In this chapter, the folate-EDA was covalently connected with heparin- campotothecin by carbodiimide activation to get a folate-heparin-campotothecin conjugate.
以乙二胺作为连接臂,通过酰胺键将氨基化的叶酸与肝素-喜树碱复合物连接起来,制备了一种叶酸偶联的肝素-喜树碱复合物。
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The diluent contain magnesium chloride, potassium citrate, sodium glutamate, dipotassium hydrogen phosphate, monopotassium phosphate and fructose, semen vitality is hightest after frozen.The average value is 0.52,highter than other 5 diluent significantly (P﹤0.01).So chose this diluent as semen cryopreservation diluent on chicken. Definite cryoprotectant, equilibrium time and thaw temperature:On the base of test one,research freeze sheltering effect about glycerin, DMSO ,DMA and DMF, each with 4 consistency.The result showed that 10%DMSO sheltering effect is the best, the next is 4%DMA,semen vitality are 0.58 and 0.55 after frozen.
冷冻保护剂、平衡时间和解冻温度的确定在试验一的基础上,研究甘油、二甲基亚砜、二甲基乙酰胺、二甲基甲酰胺4种冷冻保护剂在4种浓度下对鸡精子的冷冻保护作用,结果表明,10%DMSO保护效果最好,其次为4%浓度的DMA,精液冻后活力分别为0.58和0.55,两者之间差异不显著(P﹥0.05)。
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For the reaction between divinyl sulfone and N-ethylethylene-diamine or N-methylpropane-1, 3-diamine , no cross-linking occurred when the feed ratio of A〓 to BB'〓 was 1/1. When the feed ratio of DV to NDA or NPA is 3/2, no cross-linking occurred too in organic solvents such as DMSO, DMF and NMP, while cross-linking does occur in water.
对于二乙烯基砜与N-乙基乙二胺或N-甲基-1,3-丙二胺的反应,当加料配比为1/1时,反应在水和有机溶剂中不会凝胶;当配比为3/2时,反应在有机溶剂中亦不凝胶,而在水中反应时,会经过一种&假凝胶&过程,并最终发生凝胶。
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The details and results are summarized below:(1)An ABC style three component cascade reaction of aromatic aldehydes, aromatic amines and diethyl malonic ester or cyclohexanone has been developed.
论文从苯炔和亚胺出发,设计并系统研究了4种新的多组分串联反应,主要内容和结果如下:(1)发展了一种芳醛、芳胺和丙二酸二乙酯或环己酮的ABC型三组分串联反应。
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The intermediate which obtained from oximation of 7a-e reacted withmethyl N-(2-bromomethylphenyl)-N-methoxycarbamate to synthesize oxime ether methyl carbamate 3a-e.
以邻位卤代苯甲醛和3-丁烯-2-醇为原料通过钯催化&一锅法&反应合成了2-乙酰基茚7a-e,7a-e 肟化之后和N-(2-溴甲基苯基)-N-甲氧基氨基甲酸甲酯反应合成了肟醚类氨基甲酸甲酯3a-e,进一步胺解之后得到了肟醚类氨基甲酰甲胺3f-j。
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Replacing DETA with PIP, a new three dimensional compound 3 issynthesized and the 3D anionic framework of compound 3 is constructed from twodistinct motifs, a one-dimensional tancoite chain and a single 4-ring (S4R) unit,which contains four intersecting channels running throughout the structure as 8,12-member ring channels along to the a axis and 12-member ring channels along theb and c axis, respectively.
其中,以乙二胺为模板剂的亚磷酸铟微孔化合物具有无限的共边4员环一维链状结构;以哌嗪和1,6-己二胺为模板剂合成出的亚磷酸铟化合物分别具有二维交叉8员环孔道和16员环孔道的三维开放骨架结构。
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A new chelating fiber containing thioamide group is synthesized by cross-linking of polyacrylonitrile fiber with ethylene-dimine and following with chemical modification with sodium sulfide using DMF as solvent.
以腈纶纤维为起始原料,经乙二胺预交联后,以DMF作溶剂与硫化钠反应,合成了一种硫代酰胺功能基可达6.8mmol/g干纤维的螯合功能纤维,其对贵金属金、银离子具有良好的吸附性能。
- 推荐网络例句
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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
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Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
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Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。