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Methods:The preparation procedure of β cyclodextrin inclusion compound of pennyroyal was studied by orthogonal test with 3 factors: Pennyroyal, temperature and time.The inclusion compound was proved by thin layer chromatography and microscope.

用正交实验法研究配比、温度、时间三个因素对薄荷油β环糊精包合物的饱和水溶液法的制备工艺的影响,考察包合物的收率,并用TLC、显微影像验证包合物的形成。

Methods:the preparation procedure of β cyclodextrin inclusion compound of pennyroyal was studied by orthogonal test with 3 factors: pennyroyal, temperature and time.the inclusion compound was proved by thin layer chromatography and microscope.results:the optimum preparation conditions for inclusion compound were established as :pennyroyal 2.5 ml ,inclusion temperature was at 50℃ and for 3.5hr.

用正交实验法研究配比、温度、时间三个因素对薄荷油β环糊精包合物的饱和水溶液法的制备工艺的影响,考察包合物的收率,并用tlc、显微影像验证包合物的形成。结果:最佳的工艺条件薄荷油2.5 ml,包合温度50℃,包合时间3.5 h。

The optimization process of microwave-assisted extraction for phytin from rice bran is gained by the uniform design.

采用均匀实验法优化出用微波辅助法从米糠中提取菲丁的工艺条件。

The aims of this research were to investigate the sex differences and the impacts of deindividuation and intimacy of topics on self-disclosure based on survey and experimental methods.

本研究采调查法与实验法两种研究途径,探讨网路性话题自我揭露的性别差异,以及去个人化与话题亲密性对於自我揭露的影响。

In order to understand the lines calisthenics 3-5 grade of schoolchild the effects of physical and psychological health, this paper, methods of documentation,experimental method, a questionnaire survey method, such as mathematical statistics, Dalang of Dongguan City shui lin school students in grades 3-5 research; 3-5 of schoolchild calisthenics training and physical fitness of students measured before and after training (height, weight, vital capacity, Sit and Reach, standing long jump, pulse) and psychological health; The results show that the contact schoolchild to promote the physical and psychological health, and social adaptability significant effect.

为了解健美操练习对小学3-5年级学生身心健康的影响,本文采用文献资料法、实验法、数理统计法等,对东莞市大朗水霖学校3-5年级学生进行了研究;对小学三到五年级学生进行健美操训练,并测定训练前后学生身体素质(身高、体重、肺活量、坐位体前屈、立定跳远、脉搏)和心理健康状况;结果表明,健美操练习对促进小学生身心健康以及社会适应能力方面有显著效果。

The optimized preparation of CuInSe2 thin films by DC-magnetron sputtering the metal precursor followed by adenization is investigated by means of the four-factor and four-level orthogonal experimental method.

采用四因素四水平的正交实验法优化了磁控溅射金属预置层后硒化法制备CuInSe2薄膜的工艺条件。

The processing conditions of extracting carya cathayensis oil by ultrasonic extraction is studied by orthogonal experiment.

采用正交实验法研究超声波法提取山核桃油的工艺条件。

Synthesis of Antidote of N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane BI Hong-mei, ZHANG Jin-yan, LIANG Ying, SHEN Yong (College of Arts and Sciences Heilongjiang August First Reclamation University, Daqing 163319, Heilongjiang, China) Abstract: N-Dichloroacetyl-2-methyl-1-oxa-4-aza-spiro-4.4-nonane was synthesized by one pot method with isopropanolamine, cyclopentanone and dichloroacetyl chloride. The optimum reaction conditions obtained are as follows:the proportion in moles of the above materials is 1∶1∶1.2, reaction solvent is toluene, reaction temperature is -15 to -10 ℃,reaction time is 3 h, under the optimum condition, the yield of the compound is 50.0%.

除草剂解毒剂N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷的合成毕洪梅,张金艳,梁英,沈勇(黑龙江八一农垦大学文理学院,黑龙江大庆 163319)摘要:以33%的氢氧化钠水溶液为缚酸剂,异丙醇胺、环戊酮和二氯乙酰氯为原料,采用&一锅法&合成了N-二氯乙酰基-2-甲基-1-氧杂-4-氮杂-螺[4.4]壬烷,采用正交实验法得到最佳反应条件:反应原料摩尔比为1∶1∶1.2,苯作溶剂,反应的温度为-15 ℃~-10 ℃,搅拌时间为3 h,产率达到50.0%。

In this paper, the stress and strain distribution, tube wall thinning and the cross section ovalization in Aluminum alloy thin-walled tube NC bending with small bending radius have been investigated through experimental method combined with finite element method and theoretical analysis.

本文采用实验法,并结合有限元模拟和理论解析法,研究了与铝合金薄壁管小弯曲半径数控弯曲成形质量密切相关的应力应变分布、壁厚变化和截面畸变等关键问题。

Orthogonal test was adopted to optimize extraction process of alkaloids from plumula nelumbinis.

以紫外分光光度法测定生物碱的含量,采用正交实验法对莲子心的提取工艺进行优选。

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推荐网络例句

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。