植物化学

This paper summarizes the chemical constituents,pharmacological action and clinical applications of Alternanthera plant ,and the antiviral actions of Alternanthera philoxeroides in clinic are mainly generalized.

从化学成分、药理作用及临床应用三个方面综述了莲子草属植物的研究进展，着重总结了空心莲子草在临床上的抗病毒作用，为莲子草属植物和空心莲子草的进一步开发应用提供了参考。

This study shows that D. nerii larvae perform differently on three Apocynaceae plant species, and the difference may due to variations in foliar nutritional and allelochemical factors.

本研究显示夹竹桃天蛾在不同的夹竹桃科植物上的表现不同，而根据化学分析的结果发现，此种的不同表现可能受到植物的营养及防御物质所影响。

Wanfenghu reservoir has been polluted seriously, and waters are in a severe eutrophication condition. Whether physico-chemical indexes or biological indexes appraisal, it proved that the water quality of Wanfenghu is between IV-V. Wanfenghu contains high TN and TP which are 5 to 6 times of the national standard content, and the quantities construction of phytoplankton communities is deeply disequilibrium, the Cyanophyta and Charophyta occupying overwhelming

万峰湖水库已经受到了严重污染，水体处于严重富营养化状态，其水体中的溶解氧的三季变化范围在2.92-5.3mg·L之间、化学耗氧量三季平均值为34.77 mg·L~(-1)、总氮三季平均值为2.5 mg·L~(-1)、总磷的三季平均值为0.35 mg·L~(-1)、叶绿素a含量的三季平均值为23.64 mg·m~(-3)，以上各指标表明万峰湖水库水体处于Ⅳ-Ⅴ类水质；无论从浮游植物的群落数量上还是浮游植物种类组成上看，蓝藻和绿藻都占绝对优势，而其它各种藻类极少，是典型的蓝-绿藻型水

Compounds 2-4 were isolated from the plants of Chloranthaceae for the first time.The antibacterial activities of these six compounds were tested for the first time.Some compounds may have potential for future study and development as plant-derived oral antibacterial agents.

化合物1为1个新的天然产物，化合物2~4为首次从金粟兰科植物中分离得到，首次测定了6种香豆精类化学成分的抗菌活性，一些化合物具有进一步研究开发成为抑制口腔细菌的天然药用植物制剂的潜力。

The review focused on recent developments concerning the chemical constituents of dipsacaceae species,their biological activities and clinical application.

川续断科植物的研究进展，临床医学论文，医药学论文从化学成分、药理作用和临床应用三方面综述了川续断科植物最近的研究进展。

It expounded the kind and function of halophytic vegetation which can make vegetation and pesticide, it also told us the manufacture and use method about halophytic vegetation, aim at trace standard of agricultural chemical which in agricultural trade to use agricultural ch...

面对在农产品贸易中苛刻的农药残留标准，使用植物源农药，减少化学农药的施用量，生产绿色无公害食品，盐生植物具有极大的潜在威力。

Since 1980s, the insecticidal plant has been investigated by multi-subjects crossed research in the world.

是我国著名的杀虫植物，自1980年代以来，已从化学和生物学的角度对这一杀虫植物进行了多学科的交叉研究。

A large amount of research results showed that plants show isohydric behavior when the plant hydraulic and chemical signals cooperate to promote the stomatal regulation of leaf water potential.

当植物水力信号和化学信号共同作用促进气孔对叶水势的调节时，植物对叶水势的调节表现为等水行为。

Davidia involucrata Baill is a kind of Chinese protected special plant, and Ligustrum sinens gorwthing in Fujian China is used in Chinese traditional medicine, but there are not many published paper reaching in their chemical constituents.

珙桐是我国特有的国家一级保护植物，福建产女贞小腊是我国传统的一种中药材，目前对这两种植物的化学成分研究很少。

ResultsOnly five species of Pholidota genus were studied and 41 compounds were isolated and characterized including 9,10dihydrophenanthrenes, phenanthraquinone, bibenzyls, stilbenes, triterpenoids, phenyl propanoids, lignans, sterols and aliphatic compounds, and some plants and compounds exhibited analgesic, antioxidant, anticancer and NO production inhibitory activities.

结果目前石仙桃属植物研究所涉及的种类仅5种，从该属植物中分离出化学成分41种，包括9， 10二氢菲、菲醌、联苄、二苯乙烯、三萜、苯丙素、木脂素、甾体和脂肪族等结构类型。一些种类所含成分在镇痛、抗氧化、抗癌、抑制NO生成等方面显示了较好的活性。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了