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Both isomers show absorption hypochromicity and the same CV behavior associated with binding to B-form DNA.

结果表明,两种旋光映体与DNA发生作用时具有相同的电为和相同的紫外可见光谱。

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A rapid method based on ELISA was developed for determination of endosulfan isomers and endosulfan sulfate in wheat.

研究应用酶联免疫方法,快速检测小麦中硫丹及硫丹硫酸酯。

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A structural isomer of citral that is obtained from the oxidation of nerol and is used to make perfumes and flavorings.

顺丁烯酸氧形成的酸(如在脂肪和碳水合物的新陈代谢中)。

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The isomers dostribution of ortho-and para-toluenesulfonamide are successfully determined by high performance liquidchromatography (HPLC) . The results are compared with ultraviolet-spectroscopy (UV).

本文采用高效液相色谱法(HPLC),成功地测定甲苯磺酰胺的异构体分布,并用紫外光谱法(UV)作为照的方法进比较。

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Four isomers formed by a gold atom attached to a pentacene molecule were investigated by density functional theory due to their potential applications in molecular electronics.

用密度泛函理论研究并五苯-金异构体的结构、电子光谱和阶非线性光性质。

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The isomer ratio of o-MNT to p-MNT,the degree of dinitration and the ratio of 2,6-DNT to 2,4-DNT have been investigated in the mononitration product of toluene by mixed acid.

通过改变反应条件,研究硝硫混酸硝甲苯一段硝产物的异构体比例、程度及2,6-硝基甲苯与2,4-硝基甲苯生成比例的影响。

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But pentane, C5H12, has 3 possible isomers and C6H14, known as hexane, has 5.

是戊烷 C5H12 有 3 种可能异构体, 而称为己烷 C6H14 有 5 种。

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Crash Course

Thus, no isomers with alkynes. Phew. OK I'm done describing for the moment.

因此,与炔烃没有异构体。呸。好,我暂时完成描述。

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Crash Course

But if the parts are different, it's possible to have two totally different isomers of the same compound.

是,如果部分不同,则同一可能有两种完全不同异构体。

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Crash Course

You would have to break the pi bond, and thus, the entire molecule to rotate between isomers.

你必须破 pi 键,因此,整个分子才能在异构体之间旋转。

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Crash Course 综合篇

These different structures for compounds that have the same molecular formula are called isomers.

具有相同分子式些不同结构称为异构体。

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So the number of atoms is butane only allows for 2 isomers, n-butane and isobutane.

所以原子数是丁烷只允许2种异构体, 正丁烷和异丁烷。

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But looking at this table of the number of possible isomers you could see that that escalated quickly.

是查看张可能异构体数量表, 您会发现它迅速增加。

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Scishow 精选系列

The kinked configuration is called the" cis isomer" and the straight one is the trans isomer.

结状排列成为“顺式异构体”线状排列,成为“反式异构体”。

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Crash Course

Well we know that they're unsaturated alkenes because saturated fats don't have double bonds, and thus, can't have cis- and trans- isomers.

我们知道它们是不饱和烯烃, 因为饱和脂肪没有双键,因此不会有顺式和反式异构体。

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Crash Course

They're not structural isomers like n-butane and i-butane, instead, they're what we call cis-trans isomers.

它们不是像正丁烷和正丁烷那样结构异构体,相反,它们就是我们所说顺反异构体。

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They call that isobutane and it is an isomer of butane, but according to these all important rules of nomenclature, it's not actually any sort of butane at all.

他们称其为异丁烷, 它是丁烷异构体,根据所有重要命名规则, 它实际上根本不是丁烷。

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经济人(汇总)

Evolution has provided a goodly range of these in the form of enzymes, which are large, complicated and sometimes temperamental protein molecules, but which have the advantage that they can create pure versions of what are known as optical isomers.

以酶形式提供了大量质,些酶是大型、复杂、有时还会变无常蛋白质分子,它们优点是可以产生被称为光异构体纯净版本。

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