植物化学

The doctoral dissertation focuses on secondary metabolitic material and biological characteristics of two species...

本文对粘帚霉属的两种药用植物内生真菌，进行化学成分和原生质体诱变育种两方面的研究。

According to cytology, biology, oil chemical characteristic and castor-oil plant's physical and chemical properties, it surveys both domestic and international research on the progress and development of castor-oil plant hereditary improvement, hybrid vigour utilization and comprehensive utilization.

研究立足于蓖麻遗传多样性及其植物质能的综合利用潜势，根据蓖麻雌雄同株的细胞学、生物学和油脂化学特性和毒蛋白的物化性质，综述国内外有关蓖麻生物学、遗传育种、杂种优势及综合利用的进展与研发前景。

These oddly shaped bacteria are called bacteroids, and their formation is apparently induced by several chemicals in the plant tissue.

这些形状古怪的细菌群叫做类细菌，它们的形成显然是植物组织中几种化学物质的诱导结果。

Research on the relationship between as other of plants belong to banyans and parasitic insects as a theoretical basis for genetics, chemistry, physiology and ecology, morphology, on the aspects of classification is of great significance to the reconstruction of history, and also have important influence on the evolution characteristics.

研究两者的关系可作为对其他榕属植物及其寄生昆虫作为一理论依据，在遗传学、进化学、生态学、形态学、生理学、分类学等方面上都具有重大意义，对进化史的重建，种界定和特征进化也有重要影响。

Crinoids, ammonoids and bivalves dwelt on the stems and lived on pseudoplanktons. They were gradually deposited on the sea bottom with increasing biomass of the dwelling organisms and lime content, and at last concretions were formed.

海百合、双壳类和菊石类栖息在植物茎干上营假浮游生活，随着栖息生物量和化学沉积物灰泥的增加，逐渐沉积在海底形成结核。

Based on the changes in the spectrum characters of guest molecules producedthrough inclusion complex formation with cyclodextrins, we have carried out two aspects of investigation:First, the mechanisms for the host-guest recognition reactions have been studied, such as the interactions between 3-CD and curcumin, the main constituent of the rhizomes of the plant Curcuma longa, the recognition of p-CD towards rubidate, the effective component of the Chinese traditional medicine madder, and the reactions of p-CD towards the antileprotic drug dapsone and the antiinflammatory drug nabumetone: The formation of supramolecular complex between P-CD and guest molecule has been discussed and verified in virtue of multitudinous means such asultraviolet-visible absorption, fluorescence emission, infrared spectrogram and so on. The influence of addition of linear alcohols on the supramolecular system has been studied and the reason why the noncovalent interactions in the three-component system could result in a decrease in the apparent association constant of the inclusion complex has been revealed.

本论文基于环糊精对被包结客体光谱性质的改变，开展了两大方面的研究：β-环糊精对姜黄属植物根茎主要成分—姜黄素、中药茜草有效成分—茜草双酯、抗麻风药物氨苯砜及抗炎药物萘丁美酮的主-客体识别反应机制研究：借助超分子包合物的紫外吸收光谱、荧光光谱或红外吸收光谱等手段，通过多种方法探讨并验证了超分子包合物的形成；研究了直链醇的加入对超分子体系的影响，揭示了三元体系中非共价相互作用导致超分子包合物表观结合常数降低的原因：对超分子包结反应进行了热动力学研究，探讨了各热动力学参数的变化趋势并从熵焓互补的角度考察了超分子包结过程；通过荧光猝灭实验进一步揭示了水相中β-环糊精增敏客体荧光的本质原因，从而为超分子化学提供新的理论和研究方法。

Making a dried flower bouquet is a fun project.

干花是利用自然植物材料通过物理或化学方法处理后形成的观赏花材。

This thesis attempt to provide some scientific evidence for the chemotaxonomy and medicine development of these genuses and to provide some of molecular basis for anticancer mechanisms of flavonoids.

本论文研究工作对上述的三个属的化学分类学及药用植物资源的合理应用、开发提供了一定的科学依据，同时对从分子水平研究黄酮类化合物抗肿瘤作用机制提供了一定的理论基础。

The photophysical property of the complex is investigated by means of IR spectra, Raman spectrum and laser excited, high-resolved luminescence spectra which indicates one kind of Eu site with local symmetry of C 2v in the complex.

合成了植物生长素对氯苯氧乙酸和 1，10 邻菲罗林与铕的三元配合物Eu 3·Phen 。对所合成化合物进行了元素分析和热谱分析。通过测定配合物的红外光谱、拉曼光谱和激光激发高分辨荧光光谱研究了配合物的光物理性质。荧光光谱表明配合物中Eu离子只具有一种化学环境，Eu格位的局部对称性是C2v

In plants and animals, gene expression can be altered by changes not to DNA itself but rather chemical modifications either to DNA or to histones that interact with DNA.

在植物和动物中，基因表达能够通过非DNA自身，而是通过与DNA相互作用的DNA或组蛋白的化学修饰的变化来改变基因表达。

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