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The influences of polymerization conditions such as the dosage of cyanobenzene, catalyst, co-catalyst and polymerization temperature on the polymerization (gelation time and monomer conversion) and the swelling value of PDCPD were investigated.

考察了主要反应条件如苯甲腈的用量、聚合反应温度、主催化剂的用量和助催化剂的用量等对聚合反应速率、聚合反应转化率和PDCPD膨胀值的影响,并得到了最优的聚合反应条件:苯甲腈与WCl_6的摩尔比为3,聚合反应温度为70℃,DCPD与WCl_6的摩尔比为1500,Et_2AlCl与WCl_6的摩尔比为11。

From the point view of product distribution, conversion of dimethyl ether and energy consumption, with RCD plasma DME conversion was higher and was hardly affected by the residence time of dimethyl ether, and hydrogen, carbon monoxide and unsaturated hydrocarbons with RCD plasma were more than those with DBD plasma.There was no liquid product with RCD plasma, but the liquid product obtained with DBD plasma consisted of aldehydes, alcohols and methoxy-containing organic compounds, for instance, formaldehyde, methyl alcohol, dimethoxy ethane and so on.Moreover, most compositions of liquid product were methoxy-containing compounds, and the liquid product selectivity was as high as 32.23%.However, energy consumption for the reaction with DBD plasma was more than that with RCD plasma.

从产物分布、转化率及能耗上看,利用RCD所获得的二甲醚的转化率高,几乎不受二甲醚停留时间的影响,且氢气、一氧化碳和不饱和烃的含量大,几乎没有液相产物,而利用DBD能获得较多的液相产物,包括一些醇、醛和含有甲氧基的有机化合物,如甲醛、甲醇和二甲氧基乙烷,且大部分组成都是含有甲氧基的化合物,液相产物的选择性高达32.23%,但是能耗较大。

The oxidant 〓 plays indirect role in dissolving gold, and mainly controls the mix potential of Au in the alkaline thiourea solution. In which the "mix potential"is the decisive factor affecting the dissolution of gold. The reaction driving force is enough to have formamidine disulfide oxidize Au to Au〓 at the potential of about 0.4V. And then thiourea molecular complexes with Au〓 ion soon, which causes the fast dissolution of gold in the alkaline thiourea media. The dissolved weight of gold in 0.25 M thiourea solution with 0.05M Na〓SO〓 and 0.1M 〓 of pH 12. 5 by air at the temperature of 303K is 7. 8mg·cm〓 within 1hr.

在碱性硫脲溶金过程不起直接作用,而是通过S〓O〓来控制二硫甲脒有效形成的金在溶液中的混合电位;&混合电位&是影响碱性硫脲溶液溶金与否的决定性因素,在0.4V左右,有足够的推动力致使二硫甲脒氧化Au成Au〓,随后硫脲与Au〓络合形成稳定的络离子Au〓,从而使金快速溶解;温度为303K、pH为12.5时,在含0.05MNa〓SO〓、0.1M 〓及0.25M硫脲的溶液中,鼓入空气,金的溶解量在1hr内为7.8mg·cm〓;铜只有微量溶解,银、镍、铁则几乎不溶解。

Woodson or apocynum venetum Linn as raw material, it utilizes the method of decoction and alcohol sedimentation to remove impurity. After extract is separated by macroporous adsorptive resins, then use polydextran gel LH-20 to purify, obtain isoquercitrin. Compared with the method of traditional silica gel column chromatography, this method has characteristics such as: experiment period is short, dissipation of organic dissolvent is little, yield of produced product is high, and purity coefficient is fine and so on. Isoquercitrin produced by this invention can be provided for medicine research or used as chemistry control article.

Woodson或罗布麻的叶为原料,采用水提醇沉除杂的方法,提取液经大孔吸附树脂分离后再用葡聚糖凝胶LH-20纯化得罗布麻甲素,此法与传统硅胶柱层析的方法相比,具有实验周期短,有机溶媒消耗少,制得的产品得率高和纯度好的特点,本法制得的罗布麻甲素可供药物研究或化学对照品使用。

Results totally 287 strains were isolated from the 256 positive samples , and the gram-negative bacilli were 225(78.4%,), the gram-positive coccus were 41(14.3%), snd the monilia were 21(7.3%).the distributions of clinical bacteria were respiratory tract(63.4%),urinaryract(7.0%),secretion(includingwound .3%),blood(5.9%),stool(5.2%), pucture fluid(4.9%), and other sites(7.3%). of all isolating bacterium,from the first to the fifth were ps.aeruginosa(19.5%),k.pneumoniae(16.7%), e.coli(14.3%), a.baumannii(11.8%) and psemal (10.1%).resistant rates of methecillin-resistant s.aureus,methecillin-resistant coagulase-negative staphylococci and vancomycin-resistantwere 88.2%、70.0% and 11.1% respectively;the incidence of e.coli and k.penumoniae produce extended speutrum beta-lactamase were 68.6%和65.2%, 44.6% of ps.aeruginosa isolates were resistant to imipenem; the highest examining rate of 21 kinds of monilia was candida albicans (66.7%),resistant rate of candida albicans to fluconazole and amphotricin b was 51.3% and 1.3%.

结果 在254份检出细菌阳性标本中共培养出287株细菌,其中革兰阴性杆菌225株(78.4%),革兰阳性球菌41株(14.3%),念珠菌21株(7.3%),检出菌来自呼吸道标本占63.4%,其他标本各占5%左右;细菌检出占构成比前三位的依次为铜绿假单胞菌19.5%、肺炎克雷伯菌16.7%、大肠埃希菌14.3%;耐甲氧西林金黄色葡萄球菌、耐甲氧西林凝固酶阴性葡萄球菌和耐万古霉素的肠球菌的发生率分别为88.2%、70.0%和11.1%;大肠埃希菌和肺炎克雷伯菌的超广谱β-内酰胺酶的检出率分别为68.6%和65.2%,铜绿假单胞菌对亚胺培南的耐药率为40.2%;白色念珠菌对氟康唑的耐药率为81.3%,对两性霉素的耐药率为3.2%。

Correct makes the law forms the good personal hygiene habit, sufficient sleep, attendance in exercise, reduced pressure, enough nutrition; The attendance washes the hands, after particularly has contacted the public goods, must wash the hands first touches own eye, the nose and the mouth again; Sneezes and cough time should use the paper goods to cover the oronasal; The indoor maintains ventilates and so on.

正确的法律形式作出的良好个人卫生习惯,充足的睡眠,参加行使,减少压力,足够的营养;出席冲洗手后,特别是已与公共物品,必须先清洗双手触及自己的眼睛,鼻子和口再次;打喷嚏和咳嗽时应该使用文件的货物,以支付口鼻;室内保持通风等等。甲流英语作文:预防甲流的方法由作文网编辑整理,你也可以投稿哦!

Compared with the controls, both 10.0-10 000.0 μgL^(-1) of methamidophos and 100.0 μgL^(-1) of 17β-estradiol increased the mean population growth rate significantly.0.1-10 000.0 and 10.0 μgL^(-1) of methamidophos decreased significantly the average ratio of ovigerous to non-ovigerous females and the average mictic rate, respectively, and 1000.0 μgL^(-1) of 17β-estradiol decreased the total resting egg production significantly.

与对照相比,10.0~10000.0μgL^(-1)的甲胺磷和100.0μgL^(-1)的17β-雌二醇均使轮虫的平均种群增长率显著提高;0.1~10000.0和10.0μgL^(-1)的甲胺磷分别显著地降低了实验期间轮虫种群中的携卵雌体数/非携卵雌体数和混交雌体百分率的平均值;1000.0μgL^(-1)的17β-雌二醇显著降低了轮虫的休眠卵总产量。

In addition, a pre-column derivatization HPLC method was applied to the determination of Astragaloside Ⅳ; the flavonoids was determined by full-range HPLC scanning; a colorimetric method was developed for the determination of flavonoids and saponins. Hierarchical cluster analysis was performed on three constituents of different Radix Astragali species, and its result was compared with those of traditional phytoecological identification and the pharmacological quality assessment.

本研究以比色法测定了黄芪中总皂苷的含量,以柱前衍生化高效液相色谱法测定了黄芪中黄芪甲苷的含量;以比色法测定了黄芪中总黄酮成分的含量,以反相高效液相色谱法测定了黄芪中毛蕊异黄酮和毛蕊异黄酮苷的含量;以黄芪中的黄芪甲苷、毛蕊异黄酮和毛蕊异黄酮苷为主要特征对不同品种的黄芪进行了系统聚类分析,并将聚类结果与传统生药学鉴定和药理质量评价结果进行了比较。

In order to get the aryl alkynyl thio ether, we need to synthesize some important terminal functional compounds. Based on the preceding reaearch of our laboratory, we selected methyl thio methyl phenyl sulfone as nucleophilic reagent to eract with aromatic aldehyde and synthesized successfully a series of methylthio aryl ethynes I_ by"one-pot"reaction .

本论文在大量的文献调研和本实验室过去研究结果的基础上,利用亲核硫试剂甲硫基甲基苯基砜(methylthiomethyl phenyl sulfone, MP-S)与芳香醛的&一锅反应&,成功的合成了一系列甲硫芳炔化合物I_,从而为实现形态各异的芳炔硫醚类分子提供了一个良好的构筑平台。

The officers and men of the whole army ate their fill,and the steeds were well fed with fodder.30,000 officers and men were chosen from the whole army to from three phalanxes,with 10,000officers and men each.

一天傍晚,吴王下达了命令全军将士吃得饱饱的,马也喂足了草料从全军中挑出三万精兵强将每一万人摆成一个方阵,共摆三个方阵每个方阵横竖都是一百人每一行排头的都是军官司每十行,也就是一千人,由一个大夫负责每项一个方阵由一名将军率领中间的方阵白盔白甲,白衣服,白旗帜,白弓箭,由吴王自己掌握,称为中军;左边的方阵,红盔红甲红衣服红简直就像深不可测;右边的方阵则一水儿黑色半夜出发,黎明时分到达离晋军仅有一里路的地方天色刚刚显出亮色,吴军鼓声大作,欢呼之声震天动工地

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。