多酸的

The fluorescence spectra of 4- 5 '-p-biphenylyloxadiazolyl-2' benzyl ω-p-biphenylyl polymethylene car-boxylate have been determined. The results of experi-ment show that they can form not only intramolecularexciplex but also intermolecular excimer and triplex.

测定了ω-对联苯基多亚甲基羧酸4-[5'-对联苯基〓二唑-2']苄酯的荧光发射光谱，从实验结果得到，它们不但可以形成分子内激基复合物，而且可以形成分子间激基缔合物和三分子激基复合物。

This paper introduced the method that the thiabendazole was synthesized by polyphosphoric acid as solvent.

介绍多聚磷酸作为 4 羧酸噻唑与邻苯二胺溶剂兼脱水剂，合成噻苯咪唑———食品保鲜剂的方法。

Cyclization: cyclization occurs at 100℃in polyphosphoric acid for 4h in the mass ratio of 3-(4-methoxyanilino) propionic acid to PPA with 1:8, and 6-methoxy-2,3-dihydro-4-quinolone is formed in 50.5% yield with a method of rapid chromatographic column, c.

成环反应：质量比[3-(4-甲氧苯氨基)丙酸∶多聚磷酸]=1∶8，反应温度为100℃，反应时间4h，柱层析纯化后6-甲氧基-2，3-二氢-4-喹啉酮的收率为50.5％；c。

A novel fluorescent acrylamide monomer, N-(4-Benzooxazol-2-yl-phenyl)- acrylamide, was prepared from o-aminophenol, p-aminobenzoic acid and acryloyl chloride, with polyphosphoric acid as dehydrating agent and triethylamine as deacidification agent.

以邻氨基苯酚、对氨基苯甲酸和丙烯酰氯为原料，以多聚磷酸为脱水剂、三乙胺为脱酸剂，研制了一种新的荧光丙烯酰胺单体N-[4-（苯并噁唑-2-）苯基]丙烯酰胺。

It is concluded that ions are condensed gradually in the process of heat treatment polytungstate acid,the symmetry of the WO6 octahedral is improved and the strength of the WOWbond is increased.

TG-DTA和IR分析结果表明，随着热处理温度的提高，薄膜中多聚钨酸离子进一步缩合，WO6八面体对称性逐渐增强。

Objective To observe the effect of Traditional and Western Medicine therapy on chronic prostatitis. Methods 150 patients with prostatitic of Ⅲa type were randomly divided into two groups.

目的 观察体外超短波联合野菊花栓及甲磺酸多沙唑嗪控释片治疗Ⅲa型前列腺炎的临床疗效。

Whenβ-alanine (0.22mg/insect) was injected into pupae of SEM, the resulting puparial phenotype was similar to that of SEW.

将多巴胺和β-丙氨酸同时注射入试虫时，蛹的颜色变化不明显。

Germanotungtic acid catalyst can be used repeatedly. germanotungtic acid ; catalysis ; synthesis ; isoamyl salicyl

杂多酸及其盐是由杂多阴离子与反荷阳离子按确定比例组成的多核配合物，具有金属氧化物和

The infection of Stylosanthes anthracnose resulted in Phenylalanine Ammonial- yase and Polyphenoloxidase and Superoxide Dismutase, activities of these three enzymes were increased in Mineirao firstly, while in CIAT2312, they were not similar as that in Mineirao.

Mineirao柱花草和CIAT2312柱花草在炭疽菌作用下，Mineirao柱花草苯丙氨酸解氨酶、多酚氧化酶、超氧化物岐化酶三种酶的活性都是先升后降，而CIAT2312柱花草这三种酶活性升降起伏不定。

A series of ABEPS were synthesized from long chain fatty acids, benzene, polyglycol and 1, 3-propane sultone by the procedure of Friedel-Crafts acylation, Huang-Minlon reduction, Williamson and sulfonation reaction, and these compounds had never been reported in the past time.

以长链羧酸、苯、多缩乙二醇和丙烷磺内酯为初始原料，依次经Friedel-Crafts酰基化反应、Huang-Minlon还原、Blank反应、Williamson成醚以及磺化反应等过程，合成了系列未见报道的ABEPS。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐