桃

The forest is composed mainly of the families, Rubiaceae, Myrtaceae, Myristicaceae, Lauraceae and Euphorbiaceae, and dominated by tree species, Metadina trichotoma, Syzygium cathayense, Knema erratica and Paramichelia baillonii. In physiognomy, the forest is characterized by the trees with mesophyllous, entire and leathery leaves. Woody lianas are found dominant, but trees with buttresses and cauliflory are relatively few in the forest.

结果显示，勐养山地雨林主要由茜草科、桃金娘科、肉豆寇科、樟科、大戟科等植物种类组成，以黄棉木、华夏蒲桃、假广子及山桂花为乔木优势种；群落乔木层以中叶、全缘、革质、尾尖、常绿植物占优势，灌草层植物则以中叶、全缘、纸质叶植物为主；藤本植物中以木质藤本占优势，板根和茎花现象少见。

METHODS The cellular up take of Hypericin extractwas investigated by detecting endocellular fluorescence, and the antitumoral effect of Hypericin extract was assessed by light microscopy, MTT assay and DNA ladder gel electrophoresis.

通过测定胞内荧光强度来确定细胞对金丝桃素的吸收，用显微镜观察、MTT法和DNA电泳分析法来研究金丝桃素对细胞的生长抑制作用。

Results show that intramolecular hydrogen transfer is not favored in view of the energy trend along IHT coordinate in the region such as hypericin's peri region, where two hydrogens of hydroxyl groups bond with a common oxygen of carbonyl group and exists two IHBs in the peri region. However, intramolecular proton transfer often occur in the molecule with hexahydric cycle hydrogen bond, where only one pair of adjacent hydroxyl group and carbonyl group.

此外选择设计了一个具有三个分子内氢键的体系，兼具金丝桃蒽酮和其他苝醌类光敏剂的分子内氢键特点，研究表明两个羟基氢与共同的羰基氧形成的氢键由于存在较高的势垒，很难发生分子内氢传递，即具有金丝桃蒽酮端位结构的分子其分子内氢传递很难发生，而一般的能形成六元环状结构的分子内氢键体系容易发生分子内氢传递。

Objective:To study the effect of several factors on the quantity of hypericin in H. perforatum callus.

中文摘要：目的：为了探讨几种理化因子对贯叶金丝桃愈伤组织中金丝桃素含量的影响。

This article is to make use of the monolayer membranes and liposome to study that interaction of hypericin with model membrane to understand the influence of hypericin on the biomembrane.

本文是利用分子单层膜与微脂质粒系统探讨金丝桃素与拟生物膜之间的交互作用，来了解金丝桃素对生物膜的影响。

We find in the monolayer membranes hypericin have the right amount of cholesterol to stabilize monolayer, and at least three cholesterol molecules can support a hypericin molecule.

我们在分子单层膜中发现金丝桃素必须要有胆固醇才能稳定处於单层膜上，而且至少要三个胆固醇分子才能支撑一个金丝桃素分子。

And the phylogenetic tree shows that it indeed far from its near species, and belongs to a different branch with the P. mahaleb L..

的pgip基因关系较近，而与寿星桃(P.persica L.var.densa Makino)、桃栽培品种'久保'P.persica

Eugenia caryophyllata Thumb belongs to Syzygium, Myrtaceae and distributes widely in south China. The bud richly contains the clove oil that possesses remarkable officinal value.

丁香为桃金娘科蒲桃属植物，在我国南方分布广泛，丁香花蕾中富含丁香油，药用价值显著。

The effects of nonessential oil extracts of Myrtus communis Linn. leaves on scavenging free radical and antioxidant role were studied in order to provide an experimental basis for its further development.

探索香桃木叶非精油组分提取物的清除自由基和抗氧化作用，为进一步开发利用香桃木资源提供理论依据和试验资料。

The first extraction was used to remove most of the chlorophyll and naringenin was obtained in the second extraction.

实验中先对桃叶粉进行一次提取以除去大量叶绿素，再对桃叶粉进行二次提取以提取柚皮素。

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。