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The more the number of hydroxyl substitution in phenyl ring, the better the ability of scavenging DPPH free radical. That is, trihydroxy is better than dihydroxy, and dihydroxy is better than monohydroxy. Moreover, when the polyhydroxy exists in phenyl ring and it is ortho-position or para-position, the ability of scavenging DPPH free radical is better too.

当苯醯基的苯环上羟基取代数量越多,其清除DPPH自由基的能力越好,三羟基效果优於双羟基、单羟基,双羟基效果优於单羟基;而苯醯基苯环上若为多羟基且羟基的位置为邻位或对位的关系时,其在清除DPPH自由基的能力较佳。

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所获得的二醚的转化率高,几乎不受二醚停留时间的影响,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、醛和含有氧基的有机化合物,如醛、醇和二氧基乙烷,且大部分组成都是含有氧基的化合物,液相产物的选择性高达32.23%,但是能耗较大。

It is characterized in that: 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine reacts with 1- methylthio - 1- methylamino- 2- nitro ethylene directly in water phase, crystallizing and separating out ranitidine alkali.

其特征在于:它是由2-(5-(二氨基基-2-呋喃基基硫代乙胺与1-硫基-1-胺基-2-硝基乙烯直接在水相中反应并结晶析出雷尼替丁碱。

With the aim of enhancing the nonlinear optical property of poly, poly[(thiophene-2,5-diyl)p-(N,N-dimethylamino) azobenzylidene] is prepared from 4-aldehyde-4'-dimethylamino azobenzene and thiophene through condensation polymerization reaction.

为了提高聚噻吩烯的非线性光学性能,通过4-醛基-4'-二胺基偶氮苯和噻吩的缩聚反应,合成了聚噻吩对二氨基偶氮苯烷,再用PTDMAAB与四氯苯醌发生脱氢反应合成了侧链含偶氮的聚噻吩烯。

The copolycondesation type polyamic acid was synthesized by using pyromellitic dianhydride and 3,3',4,4'-benzophenonetetracarboxylic dianhydride as the dianhydride monomers, 4,4'-diamino diphenylmethane and 4,4'-oxydianiline as the diamine monomers under microwave irradiation in dimethylformamide.

在N,N'-二酰胺溶剂中,以均苯四酸酐和3,3',4,4'-二苯酮羧酸二酐为二酐单体,4,4'-二氨基二苯醚和4,4'-二氨基二苯烷为二胺单体,采用微波辐射低温溶液共缩聚,合成了聚酰胺酸预聚体,然后亚胺化脱水、环化,生成共缩聚聚酰亚胺。

The sodium dithiobenzoic acid was oxidized with potassium ferricyanide to obtain di disulfide.The influences of raw materials mole ratio,stirring method and reaction time on the yield were studied with orthogonal test.

用铁氰化钾溶液氧化二硫代苯酸钠,得双二硫代苯酰,采用正交实验探讨了4,4'-偶氮双(4-氰基戊酸)与双二硫代苯酰反应的投料比、搅拌方式、反应时间对反应收率的影响。

Treat ectoplasmic armor as leather armor for purposes of armor check penalty or speed reduction.

星质护在计算防具减值和速度降低的时候被视作皮

For example, the armor bonus from a mage armor spell and the armor bonus from an ectoplasmic armor power don't stack.

举例来说,来源于&法师护&的盔加值和来源于&星质护&的盔加值就无法相互累加。

The Inertial Armor feat and the ectoplasmic armor power do indeed use psychic force.

&惰性护&专长和&星质护&异能确实使用心灵力场。

Shortly before I started painting in March, I found that the new joints were still too long because the skirt armors could not properly encage the hip as shown in the third photo.

正当我在三月时准备上色之际,发现新的关节仍然太长,大腿顶著裙令裙不能妥善合拢起来。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。