化合物

From its branchs, we obtained 8 compounds belonging to triterpene, norsesquiterpene, phenolic compound, lignan and long chain fatty acid. A lignan and a long chain fatty acid are new compounds.

从其枝条中分离鉴定了8个化合物，包括三萜、降倍半萜衍生物、酚性化合物、木脂素和脂肪酸等，其中有两个新化合物，即一个木脂素和一个长链脂肪酸。

Rubescens, three new diterpenoids,together with seven known diterpenoids, two triterpenoids and tritriacontane.

Rubescens叶和嫩枝中分离出十三个单体化合物，其中有三个新的二萜化合物，七个已知的二萜，二个三萜化合物和三十三烷。

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。

Stems and leaves were determined and compared by al(no3)3 colorimetry and hplc. the method with ultrasonic wave was applied to extract flavonoids from the leaves and stems of urtica dioical l.. with the contents of flavonoids as the index, the best extraction conditions were selected out. results the best extraction conditions were as follows:soaking the raw material with ethanol(80%, v/v)-water solution (1∶30) at 60℃.

方法分别采用al（no3）3络合分光光度法和hplc法测定异株荨麻茎叶中黄酮类化合物的含量，并对测定结果进行比较；同时以黄酮类化合物的含量为指标，优选出了超声波辅助法提取异株荨麻茎叶中黄酮类化合物的最佳条件。

SiC nanowires grew at the surface of liquid ball and formed villiform nano wire-balls. During the cooling stage in some cases, the SiO reacted with the CO in the furnace to form SiO_2 which then deposited on the surface of SiC nanowires, forming the SiC/SiO_2 nanocable with SiC as the core and SiO_2 as the wrapping layer.

由于Ni-Si化合物跟石墨的浸润性较差，在仅比化合物熔点高出小于200℃的温度区域内，Ni-Si化合物熔体不能在石墨板上熔敷而是形成合金熔球，最后在熔球表面上生长出SiC纳米线形成形状独特的SiC纳米线绒球。

In order to search for new types of highly active and low toxic pesticides, we considered alternaric acid as a lead compound and considered 5, 6-dihydro-2H-pyran2, 4-diones as a patent structure, designed and synthesized seven series of 5, 6-dihydro2H-pyran-2, 4-diones derivatives, tested their fungicidal, herbicidal and tobacco virucidal activities.

为了寻找高效低毒的农药品种，以交链孢酸为先导化合物，以5，6-二氢-6-烷基-2H-吡喃-2，4-二酮的结构为母体结构，设计并合成了七个系列的2，4-吡喃二酮化合物，用〓H NMR、〓C NMR、质谱和元素分析证明了其结构，并测试了部分化合物的杀菌、除草和抗烟叶病毒的活性。

Gas chromatography and mass spectrometry technique were employed to analyze the ginger oleoresin. This analysis resulted in the detection of 3 hitherto unknown natural compounds, 24 compounds previously reported as pungent compounds and 50 volatile compounds from ginger. The volatile compounds were mainly α-zingiberene (22.29%),β-sesquiphellandrene (8.58%),α-farnesene (3.93%),β-bisabolene (3.87%),α-curcumene (2.63%), which were mostly consisted of sesquiterpene hydrocarbons.

从姜油树脂中分析出77种化合物，其中挥发油成分50种，主要是α-姜烯(22.29%)、β-倍半水芹烯(8.58%)、α-法尼烯(3.93%)、β-没药烯(3.87%)和α-姜黄烯(2.63%)等倍半萜类化合物；姜辣素成分27种，主要成分为6-姜酚(9.38%)、6-姜烯酚(7.59%)和分析过程中由姜酚类或姜烯酚类化合物受热分解而形成的姜油酮(9.24%)。

They were two new compounds, [cyclo(Pro-Val-Phe-Phe-Pro-Val-Phe-Ser-Leu),7],[2-N-(1-methoxycarbonylethyl)guanosine, 10], and eight known compounds,(p-hydroxybenzoic acid, 1),(methyl succinate, 2),(russulaceramide, 3),(phenylalanine, 4),(guanine, 5),(β-carboline, 6),(uridine, 8), and (adenosine, 9). All the compounds were isolated from Amanita exitialis for the first time.

分别为：对羟基苯甲酸(p-hydroxybenzoic acid，1)、丁二酸二甲酯(methyl succinate，2)、神经酰胺(russulaceramide，3)、苯丙氨酸（phenylalanine，4）、鸟嘌呤核苷(guanine，5)、β-咔啉(β-carboline，6)、环（脯氨酸-缬氨酸-苯丙氨酸-苯丙氨酸-脯氨酸-缬氨酸-苯丙氨酸-丝氨酸-亮氨酸） [cyclo(Pro-Val-Phe-Phe-Pro-Val-Phe-Ser-Leu)，7]、尿嘧啶核苷(uridine，8)、腺嘌呤核苷(adenosine，9)、2-N-(1-甲氧羰基乙基)鸟苷[2-N-(1-Methoxycarbonylethyl)guanosine， 10]。10个化合物均为首次从致命鹅膏中分离得到，其中化合物7和10为新化合物。

Results show that when acid condition is established, their spectra changes can be obviously observed, when solution is basified, only the compounds hydroxyl group as possible acidic centers show spectra changes.

当外界环境呈现酸性时，化合物光谱变化明显；当外界环境呈现碱性时，除引进了潜在酸性中心的化合物呈现微弱敏感外，其他化合物光谱无明显变化。

In addition, the method for producing an amide-based polymer of the present invention is characterized by homopolymerizing the amide compound or by copolymerizing the amide compound and at least unsaturated monomer copolymerizable with the amide compound.

本发明的制备酰胺类聚合物的方法的特征在于均聚所述酰胺化合物、或共聚所述酰胺化合物和能与酰胺类化合物共聚的至少一种不饱和单体。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。