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胺化

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Allyl-functional novolac with allylation degree of 173 % was synthesized , followed by copolymerizing with 4 , 42bismaleimide biphenyl methane at a mass ratio of 1∶1 to obtain BMI2modified allyl-functional novolac (BMAN173) resin.

制备了烯丙基化程度可达 173 %的烯丙基酚醛树脂(AN173),并与双马来酰亚胺以 1 ∶1 的质量比进行共聚,制备了双马改性的烯丙基酚醛树脂(BMAN173)。

Desulfurize cell deoxidizes the sulfuric acid to its deoxidization form ,then fixs it on the protein for degradation SO2 of flue gas. And the activating energy of immobilized cell to degrade SO2 is 39.5 kJ/ mol.

用活性碳吸附海藻酸钠包埋已二胺交联制备固定化微生物不仅能保持微生物较高的活性,而且还具有高的机械强度、好的传质性和强的耐酸性。

In the sensitive and simple method, the p-phenylenediamine dihydrochloride was oxided to diazotized products with the reaction of NaNO2 in H2SO4 medium.

色氨酸与重氮化的对苯二胺二盐酸盐在硫酸介质中生成粉红色化合物,该化合物最大吸光值为522nm;摩尔吸光系数为0.89×104L/mol·cm;偶合产物至少稳定存在1h;色氨酸浓度在0.30~12μg/ml范围内遵循朗伯比尔定律。

Compounds 3a-3d, 4a-4d, 5a-5d, 6a-6e and 7a-7e were prepared with a new efficient method, in which the aromatic amines were diazotized with isoamyl nitrite in EtONa/EtOH under refluxing condition, and mono -, bis -and tetrakis -substituted calix [4] arenes were obtained respectively as main product by diazo-coupling in different molar ratio to calix [4] arene.

一,提出了一个有效的新方法合成含有芳香偶氮基团的杯[4]芳烃衍生物3a-3d;4a-4d;5a-5d;6a-6e和7a-7e:即在非水溶剂乙醇中用亚硝酸异戊酯,在强碱乙醇钠存在下对芳香胺进行重氮化,得到芳香重氮酸盐沉淀,过滤,然后加入杯[4]芳烃的四氢呋喃溶液,通入CO〓气体调节溶液的pH值为7-9,使其发生偶联反应。

Organic our country high polymer flocculant already has commercialized at present having several breeds such as PAM , polypropylene acidamides and carboxyl methyl cellulose only , studies innocuous high-effect organic synthesis high polymer flocculant (the ammonium equality gathers the sum copolymer kind if alkyl alkene propyl group halogenates waiting), optimizes it's the cost reduction composing handicraft.

目前我国有机高分子絮凝剂已商品化的仅有PAM、聚丙烯酰胺和羧甲基纤维素等几个品种,研究高效无毒的有机合成高分子絮凝剂(如烷基烯丙基卤化铵的均聚和共聚物类等),优化其合成工艺降低成本。

The combined extract was concentrated to dryness and redissolved in acetonitrile, then cleaned up by dispersive solid-phase extraction with sorbents of N-propyl ethylene diamine, graphited carbon black, and C18, and determined and confirmed by GC-NCI/MS.

样品经乙腈提取并浓缩后加入N-丙基乙二胺、石墨化碳黑和C183种填料进行分散固相萃取净化,气相色谱-负化学离子源质谱分时段选择离子监测技术测定与确证,外标法定量。

Although CdS and NiSe belonged to the same crystal system, they had a great difference in the morphology of products produced in ethylenediamine by a solvothermal process. By making a crytallographic comparison between CdS and NiSe, I thought that fourcoordinated crystals were more prone to grow one-dimensionally in the stacking direction of tetrahedrons. This hypothesis could also be embodied in many examples.

硫化镉和硒化镍的晶体结构都为六方晶系,但在以乙二胺为溶剂的溶剂热条件下合成出的产物形貌有很大的差别,我们通过对两类晶体结构的结晶学比较,我们认为4配位的晶体更趋向于生成一维纳米材料,并提出生长方向即为四面体堆积方向,这一假设也能得到许多例子的证实。

Keratin mutation predisposes to mouse liver fibrosis and unmasks differential effects of the carbon tetrachloride and thioacetamide models.

角蛋白突变诱发小鼠肝脏纤维化,揭示四氯化碳和硫代乙酰胺模型的的差别效应

The resulting polymers showed good thermal properties and excellent organosolubility even in common low boiling point solvents, such as acetone, chloroform and 1, 1, 2-trichloroethane, yielding a polymer solution with solid contents over 10wt%.

聚合物膜的紫外-可见光吸收阀值波长低于350nm,比线性类似物的(450nm)低许多,得益于超支化结构导致的酰亚胺环结构的疏松堆积,有利于以其为大分子骨架的光敏材料在365nm紫外工作波长的光刻。

Experiment results indicate the HN derivatization method is not effective for test objects of complicated ingredients, such as gaba tea, germinated brown rice and germinated seed samples. We were unable to identify the GABA peak on the HPLC spectrum. When dealing with samples that contain large amount of amino acid, such as germinated brown rice and sprouted seeds, the PITC derivatization method is prone to disturbance and has the tendency to overestimate the GABA content. The OPA derivatization method effectively isolates the GABA peak of all test samples of this experiment. That its derivatization is simple and speedy makes it suitable for broader applications.

实验结果显示HN衍生法对於成分复杂的检品如茶汤、发芽玄米、发芽种子样品的分析效果皆不好,在HPLC图谱上无法辨识GABA peak;PITC衍生法对於含有大量蛋白质胺基酸的样品如发芽玄米、发芽种子则较易受干扰而可能高估GABA含量;OPA衍生法对於本实验所有样品中的GABA peak均有良好的分离效果,且衍生化过程简单快速是较建议广泛适用的检测方法。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

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