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Starting from amino acids, the synthesis methods of N-alkyl and acyl derivatives of polyhydroxylated alkaloids were founded.

以氨基酸作为引入侧链的起始化合物,建立了多羟基生物碱的N-烷基化和酰基化衍生物的合成方法。

A modified method of free radical alkylation has been using for synthesizing of quinone derivatives with an alkyl side chain variation.

应用经过改进的自由基烷基化新方法,合成了一系列的具有长侧链结构的苯醌类化合物。

Sepals ovate or oblong, persistent or caducous, base of lateral pair not saccate.

或长圆形的萼片卵形,宿存或早落,不囊状的侧对的基部。

From the dehydration of acetic acid in industry, novel membranes used for this purpose were prepared by modifying Cardo polyetherketone (which is solvent resistance and hydrophobic) for the first time.

基于醋酸脱水的重要的工业意义,本论文首次以耐化学溶剂性能优异的亲油性材料酚酞侧基聚醚酮为膜材料,通过对其进行改性,制备醋酸渗透蒸发脱水膜。

This paper presents a rapid method for the characterization of sulphonated condensationpolymerized products of phenolphthalein and dichlorodiphenylsulfone membrane by using infrared attenuated total reflection and diffuse reflectance spectroscopy.

采用漫反射及衰减全反射红外技术,快速鉴定酞侧基聚砜膜的改性水平,得到了磺化后—SO3H基团的红外光谱差谱。

The keratinized mucosa; it was measured toabutments with a graded periodontal probe.

软组织边缘和膜龈联合的距离确定为角化粘膜的高度;其测量应用不同级别的牙周探针在基台颊侧测量且近似为0.5mm。

The key steps were the stereospecific conversion of both allylie carbamates 10 and 13 into 11 by Li_2Cu_3(CH_2)_5 and the stereoselective hydroxylation of unsaturated side chain by OsO_4-NMO.

合成的关键步骤是用Li_2Cu_3(CH_3)_5立体专一地转化烯丙醇苯胺基甲酸酯10和13成为11和用OsO_4-NMO在化合物16的不饱和侧链上立体选择性羟基化。

Dendronized polymers are one sort of dendritic polymers with dendrons as side groups and linear polymer as core.

柱状树枝化聚合物是一种具有树状构造的以树枝单元为侧基、线型聚合物为核的柱状纳米级大分子。

With structure similar to that of vitamin K, Coenzyme Q10 also known as Ubiquinone 10 is a kind of fatsoluble quinone (C6H4O2), where "10" refers to the number of isoprenyl chemical subunits.

辅酶 Q10又名泛醌10,是一种脂溶性醌,其结构类似于维生素K,因其母核六位上的侧链——聚异戊烯基的聚合度为10而得名,是一种醌环类化合物。

Prophylls absent. Leaves alternate, opposite, or whorled, main lateral veins all basal; reticulate veins inconspicuous. Flowers bisexual, very small, often within depressions in rachis, sessile.

先出叶无。叶互生,对生,或轮生,主要侧脉全部基部;网脉不明显花两性,很小,在在轴,无梗里的沮丧内的通常。

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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。