植物化学的

The journal, published since 1973, publishes original research contributions to plant protection sciences, including full papers, review articles and research notes; guest editorials; and abstracts of presentations at international meetings held in Israel, and at binational congresses with Israel but held abroad, encompassing the biological, chemical and molecular aspects of entomology, plant pathology, virology, nematology, and weed sciences, including insecticides, fungicides, herbicides and other biocides, with emphasis on new approaches in the control of pests and diseases.

杂志从1973年开始发行，刊载植物保护科学的原创研究投稿，包括完整的论文，评论文章和研究札记；特约社论；以及在以色列举行的国际会议，和在色列举行的两国会议的摘要，内容覆盖昆虫学的生物学，化学和分子方向，植物病理学，病毒学，线虫学，以及杂草科学，包括杀虫剂，杀菌剂，除草剂，和其它生物杀灭剂，重点是害虫和疾病控制的新方法。

Many plants are green mainly because of a complex chemical known as chlorophyll which is involved in photosynthesis.

大多数植物是绿色的，主要原因是它们有一种很复杂的被叫做叶绿素的化学物质，这些叶绿素与植物的光合作用有关。

Seedlings from the parasitic plant called dodder track chemical aromas to locate their preferred host plants, a new study says.

一项新的研究表明，被称作菟丝子的寄生植物幼苗可以通过追踪化学气息来确定他们最喜欢的宿主植物的位置。

Because of the cutide and the cutinication of the cell wall in epidermis, the phellemmication of the cell in phellogen of periderm, the epidermis and the periderm have the protective function of preventing the moisture from escaping and the injurous insects out of it .

不同植物及同一植础，各组织细胞的细胞壁在与功能相适应的过程中，物不同部位和不同发育时期的细胞其细胞壁具有不其结构和化学成分均发生特化，构成植物组织最为同的结构和成分，从而适应各种不同的生理功能。

Efficacious drugs were made of these species for treatment of cough, phlegm, breathe heavily, especially, to cure lung disease. We have investigated on the Chemical constituents of Adenophora stenanthina subspecies xifengsis collected from Gansu Qingyang, and twenty four compounds were isolated from ethanol extraction by chromatography technigues. Twenty compounds were identified by means of chemical and spectra methods（IR, FAB-MS, EI-MS,〓,〓, DEPT , among which three compounds were new as 3βvanilloyloxy-stigmast-5-ene-7β-one; 3β-Vanilloyloxy-stigmast-5-en-7 β-ol; 3β-vanilloyloxy-stigmast-5-en-7β, 15 〓-diol.

我们对采自甘肃庆阳的西峰沙参Adenophorastenanthina subsp.xifengensis）进行了化学成分的研究，利用现代层析手段从该植物的乙醇浸膏中分离出二十四个化合物，经化学方法和波谱技术（红外，质谱，核磁共振谱）鉴定了二十个化合物的结构，其中三个为新的化合物，它们分别是：豆甾-5-烯-7-酮-3β-香草酸酯；7β-羟基-豆甾-5-烯-3β-香草酸酯；7β，15ξ-二羟基-豆甾-5-烯-3β-香草酸酯。

We have investigated on the chemical constituents of Nepeta partite collected from Gansu Zhuanglang, and twenty eight compounds were isolated from the methanol extraction of this species by chromatography techniques. Twenty five compounds were identified by means of chemical and spectra methods IR, FABMS, EI-MS,〓, DEPT, and 2D NMR）, among which four compounds were new as isopimar-15-en-3β, 8β, 20-triol; phenylethanal-3-O-（2'-glycerin）-5-O-β-D-glucopyranoside; 3-O-linolenoylglyceryl-6'-O-(α-D-galactopyranosyl）-β-D-galactopyranoside; ethyl rosemarinate.

我们对采自甘肃庄浪的康藏荆芥进行了化学成分的研究，利用层析手段从该植物的甲醇浸膏中分离出二十八个化合物，经化学方法和波谱技术（红外，质谱，一维和二维核磁共振谱）鉴定了二十五个化合物的结构，其中四个为新的化合物，它们分别是：异海松-15-烯-3β，8β，20-三醇；苯乙醇-3-O-（2'-甘油基）-5-O-β-D-吡喃葡萄糖甙；3-O-亚麻酰基甘油-6'-0--β-D-吡喃半乳糖甙；迷迭香酸乙酯。

This paper consists of three parts.The first and second part deal with studieson the application and chemical constituents of Sapindus mukurossi Gaertn;Thethird part studies on the application of Hibiscus syriacus.

本论文由三部分组成：第一部分为天然表面活性植物无患子的应用研究；第二部分为无患子的化学成分研究；第三部分为天然表面活性植物木槿叶的应用研究。1。

The present paper mostly concerned was the T. piniperda which was discovered in Yunnan Province, the research advances on Pinus yunnanensis volatiles and using the volatiles to trap T. yunnanensis were reviewed, the successful experiences of using plant volatiles to monitor and control Scolytidae was briefly summarized.

针对云南纵坑切梢小蠹，综述了云南松挥发性化学成分的研究现状及利用各种挥发性成分诱集云南纵坑切梢小蠹的研究进展，同时简要介绍了国内外其他地区利用植物挥发性化学物质监测和防治小蠹类害虫的成功经验。

Although it is certain that the flower of Trollius chinensis is a good antibacterial medicine, there are no studies on its effective substances and quality standard.The 60% ethanol elution through polymide was determined as antibacterial and antivirus portion according to pharmacological study. The chemical experiment isolated 18 compounds and identified 13 structures.

本课题通过对金莲花提取物的药效学试验，确立了聚酰胺60%乙醇洗脱部位为其抗菌、抗病毒有效部位；继而对该部位进行了化学研究，分离出单体化合物18个，鉴定化学结构13个，其中有7个是从金莲花中首次发现的新化合物，有4个是从金莲花属植物首次分离得到，所分离的化合物大部分是黄酮类，还有有机酸等。

Sample preparation especially the extraction of chemical components from medicinal plants is of the most time consuming, tedious a...

在药用植物的化学成分分析方面，样品的预处理尤其是化学成分的萃取依然是整个分析过程中操作最烦琐、最耗费时间也最易引入误差的一个环节。

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。