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Second,the steps of the genetic algorithm with the simulated annealing algorithm are given.

然后给出了求解该问题的遗传模拟退火算法。

THE FIRST TOTAL SYNTHESIS OF TAXAMAIRIN B Taxamairin B, representive of rare naturally-occuring rearrang-ed 9(10→20)-abeo-8, 11, 13-triene diterpenoids, has been firstsynthesized by a eleven-step route in an overall yield of 8.19%,starting from commercially available catechol and 1,3-cyclohexan-dione. The improved Friedel-Crafts annulation, thermodynamicallycontrolled-geminal pairing methylation, the selective oxidation ofallyl group and the selective reduction of the less-hindrancecarbon-carbon double bond are the key steps.

二。美丽红豆杉素B的全合成研究 1,美丽红豆杉素B的首次全合成以价廉,易得的邻苯二酚和1,3-环己二酮为原料,经过改良的Friedel-Crafts烷基化反应,热力学控制的α,β-不饱和酮结构的α一位双烷基化,烯丙位的选择性氧化,以及选择性还原位阻较小的碳碳双键等十一步反应,以8.19%的总收率首次完成了美丽红豆杉素B的全合成。

Under the conditions of stir speeds 400 r·min~(-1) and distance between anode and cathode 1 mm, by using the orthogonal design, the optimum technological conditions were found that the current density was 0.3 A·cm~(-2), initial NaOH concentration in catholyte was 50 g·L~(-1), reaction times of two steps were all theoretical electrochemical reaction times. In the first electrosynthesis, initial Na_2CrO_4 concentration in anolyte was 650 g·L~(-1), and reaction temperature was 80℃. In the second electrosynthesis, initial Na_2Cr_2O_7 concentration in anolyte was 700 g·L~(-1), and reaction temperature was 85℃.

324全氟磺酸增强复合阳离子交换膜、阴阳极液中搅拌速度均为400r·min~(-1)条件下,通过正交实验得到优化工艺条件为:电流密度0.3A·cm~(-2),阴极液氢氧化钠初始浓度50g·L~(-1),两步反应时间均为理论电催化反应时间,第一步阳极液铬酸钠初始浓度650g·L~(-1),反应温度80℃,第二步阳极液重铬酸钠初始浓度700g·L~(-1),反应温度85℃。

The questionnaire included age, sex, body height, body mass, waist circumference, hip circumference, systolic blood pressure, diastolic blood pressure, vital lung capacity,steps index, grasp strength, dorsum strength, body anteflexion in sitting position, stand in one leg with eyes closed, vertical jump, push-up, sit-up and reaction time.

项目包括年龄、性别、身高、体质量、腰围、臀围、收缩压、舒张压、肺活量、台阶指数、握力、背力、坐位体前屈、闭眼单脚站立、纵跳、俯卧撑、仰卧起坐和反应时。

If depressor changeover is enzymatic depressor, anticarcinogen, anthelmintic, certain bacteriophage armour saltpetre as flight of steps leading to a palace hall, kui Nuo ketone.

如降压药转换酶抑制剂、抗癌药、驱虫药、某些抗菌素

In the many international forums of the anticapitalist and antiwar movements that have been held over the last ten years, we have proposed concrete steps to found a new global party of socialist revolution, a Fifth International.

在过去十多年中的许多关于反资本主义,反战运动的国际论坛中,我们都曾倡议过采取具体措施建立一个新的全球化的社会主义革命党派--一个第五共产国际。

Next the paper introduces the basic antilogy of random simulation, calculated steps and the selection of the type of bidding distribution.

接下来介绍了随机模拟报价的基本思想、计算步骤及报价分布类型的选取。

Based on the addition of vinyl magnesium bromide to the chiral non-racemic synthon 2 derived from-1, an enantioselective total synthesis of-3, the antipode of marine alkaloid halitulin 10 steps, overall yield: 5.3% from (R-1 was achieved using aza-Claisen rearrangement as a key step.

取得的主要结果如下:一、从-苯基甘氨醇1出发,通过已知的哌啶手性合成砌块2的加成反应,建立了经aza-Claisen重排反应进行海洋生物碱halitulin手性分子片断的对映体--isohaliclorensin 3不对称合成的路线。

Based on the addition of vinyl magnesium bromide to the chiral non-racemic synthon 2 derived from-1, an enantioselective total synthesis of-3, the antipode of marine alkaloid halitulin 10 steps, overall yield: 5.3% from (R-1 was achieved using aza-Claisen...

取得的主要结果如下:一、从-苯基甘氨醇1出发,通过已知的哌啶手性合成砌块2的加成反应,建立了经aza-Claisen重排反应进行海洋生物碱halitulin手性分子片断的对映体--isohaliclorensin 3不对称合成的路线。

The steps you need to take to refinish antique furniture are .

步骤你需要采取的油漆古董家具是。

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相关中文对照歌词
Eight Easy Steps
100 Steps
Frost And Front Steps
A Thousand Steps
Church House Steps
Steps
Steps
107 Steps
Order My Steps (Dear Lord)
Marble Steps
推荐网络例句

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。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力