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Result The results showed that phenolic compounds of Canarium album Raeusch fruit mainly distributed in pulp, which total phenolic content was about 1.5%, and phenolic acids with structure characteristic of hydroxybenzoic. And gallic acid, ellagic acid were the main phenolic compounds in Canarium album Raeusch, their relative content were 38.8% and 14.3%, respectively.

结果]结果表明:橄榄果实中的酚类成分主要集中在果肉中,其总酚含量约为1.5%,橄榄中的酚类成分以含苯甲酰结构的酚酸类为主,其中主要的酚类化合物为没食子酸和鞣花酸,相对含量分别为38.8%和14.3%。

With the rapid growth in supramolecular chemistry in recent years, a great deal of effort has been devoted to the design and assembly of supramolecular compounds, for these compounds have potential applications in catalyses , molecular recognition, molecular electronics, photonic materials and so on.

近年来,超分子配合物因在催化化学、主客体-超分子化学和分子磁性材料、超导材料、非线形光学材料等方面的潜在应用价值而成为最活跃的研究领域之一。

Therefore, it is very difficult to explain the relationships between the catalyst structures and catalytic actitivties. It was hypothesized that there maybe amporphous V compounds formed and these compounds may play an important role for catalytical oxidation.

本文对这些现象进行了一些探讨性的猜测,认为钒元素在其中起到了关键作用,其它元素作为助催化剂发挥了重要影响。

Compounds 1-9 were obtained from this plant for the first time. Compounds 2, 5-9 were isolated from family Chloranthaceae for the first time.

化合物1~9均是首次从该植物中分离得到,化合物2,5~9为首次从该科中分离得到。

Part two: Using chloroformic ester reacted with potassuim thiocyanate to get thiocyanic esters. Then reacted with biological substituted pyrimidinamine to synthesize forty two thiourea compounds, thirty eight of them are new compounds. Their structures have been charactered by IR, 1H NMR and elemental analysis.

第二部分:先以氯甲酸酯和硫氰酸钾为原料合成异硫氰酸酯,再与有生物活性的取代氨基嘧啶反应,合成了一系列新的取代嘧啶基硫脲类化合物,合成的42个化合物中有38个为首次合成的新化合物,结构经元素分析、IR及~1H NMR得到确证。

The result of the leaf anotomical structure, the chloroplast pigment contents and the photosynthetic characteristics can provide diagnosis and correction of the iron deficency, according to the degree of chlorotic leaf The regreening effect of iron compounds, concentration, pH value and mixture more compounds were stud...

对不同程度黄化叶片的解剖结构、叶绿体色素和光合特性的分析为缺铁黄化诊断和矫治提供依据。

TLC and HPLC were adopted.Result:Four chromone compounds were identified by TLC,and the contents of two chromone compounds were determined by HPLC.

TLC法检定防风药材及饮片中4个色原酮类成分,HPLC法测定防风中2个主要有效成分的含量。

As a result of aromatization of organic matter during the thermal cracking of original bitumen into gas,the aromatic hydrocarbons in the bitumen are characterized by abnormally abundant tetra-and penta-cyclic compounds,and predominated by parent aromatic compounds without alkyl chain,such as fluoranthene,pyrene,chrysene, benzofluoranthene etc.

沥青的芳烃组成独特,富含四、五环芳烃化合物,且以萤蒽、芘、和苯并萤蒽等无烷基取代的母体芳烃化合物为主,反映出沥青裂解成气过程中的有机质芳构化作用。

Ten compounds were isolated from Cirsium henryi (collected from Zhang County, Gansu Province), structures of 7 compounds have been identified.

从采自甘肃漳县的刺苞蓟全草的甲醇提取物中,采用同样方法分离纯化得到10个化合物,鉴定了其中7个化合物的结构,未发现新化合物。

The main volatile compounds were recorded, such as à-Cubebene (1.470%), Copaene (3.686%), C-Muurolene (3.152%, Eremophila-1(10), 11-diene (30.145%), Longifolene-(V4)(5.653%), Cadina-3, 9-diene (15.152%), Copaene (1.232%). The SPME fiber shows better selectivity and sensitivity toward some fragrance compounds comparing with other method.

主要挥发组分如:荜澄茄à-Cubebene (1.470%)、胡椒烯Copaene (3.686%)、衣兰油烯C-Muurolene (3.152%)、雅槛兰-1(10),11-二烯Eremophila-1(10),11-diene (30.145%)、长叶松萜烯Longifolene-(V4)(5.653%)、杜松-3,9-二烯Cadina-3,9-diene (15.152%)、古巴烯Copaene (1.232%)等。

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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。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力