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The ECL intensity and mechanism depends on the type of substituent in indole ring.

吲哚环上含羟基的化合物与含甲氧基的化合物的反应历程不同,引起发光效率差异。

Isinglass and other animal gelatin and its ramification.

硅、砷、二氧化硅、氯化物、溴化物及碘化物、稀土金属、钇、钪及其混合物、其他氯化稀土、碳酸稀土;柠檬酸、氨基酸酯及盐、氨基酸、有机硫化合物、双巯丙氨酸、甲硫氨酸、仅含有氧杂原子的杂环化合物,抗菌素,青霉素和有其结构的青霉素衍生物,链霉素及其衍生物以及它们的盐,四环素衍生物及其盐;鞋靴、家俱等的光洁剂、擦洗膏、明胶及其衍生物;鱼胶;其他动物明胶及其衍生物。

In this paper, methylal and diethoxymethane were used as end capping agents to improve the thermal stability of the product in molten copolymerization of trioxane with ethylene oxide or with dioxolane.

为此研究了在三聚甲醛与环氧乙烷或三聚甲醛与二氧五环熔融共聚体系中,通过封端剂甲缩醛或二乙氧基甲烷的使用,对热碱稳定的共聚甲醛的收率提高了3%左右。

The antibiotic resistance of staphylococcus aureus was detected by K-B method. Of 33 staphylococcus aureus stains isolated from food, 28 were resistant to penicillium and ampicillin, the resistance rate was as high as 84.8%.21 stains were resistant to carbenicillin, the rate was 63.6%.5 stains were detected resistant to methicillin, which took up to 15.2%. The stains also were resistant to cephalosporin antibiotics, aminoglycoside, microcline antibiotic and tetracyclines in different levels, all strains were sensitive to vancomycin.

结果 33株食品中分离的金黄色葡萄球菌,有28株对青霉素和氨苄西林耐药,耐药率高达84.8%;21株对卡比西林耐药,耐药率达63.6%;检出了5株耐甲氧西林的菌株,耐药率为15.2%;对其他头孢类抗生素、氨基糖苷类、大环内脂类、四环素类等都出现出不同程度的耐药;所有菌株均对万古霉素敏感。

Poly with sulfonic acid groups were readily synthesized with biphenol and 1,3-bis(4-fluorobenzoyl)benzene in the presence of excess potassium carbonate followed by sulfonation with chlorosulfonic acid.

以二氯二苯甲烷和2,6-二甲基苯酚为原料合成了含有阻碍基团的双酚单体,用此双酚单体和1,3-二(4-氟苯甲酰基苯)在无水碳酸钾存在的条件下反应制得聚芳醚酮,然后用氯磺酸磺化,控制反应条件,使磺酸基团恰好进入苯环对位,制得新型结构的磺化聚芳醚酮。

No fluorescence of 2b hasbeen detected. Probably the planar conjugative effect is destroyed by the sterichindrance of methoxy group.

而蒽冠醚2b则几乎没有荧光,这可能是由于甲氧基的引入导致体系的空间位阻增大,从而破坏了蒽环的平面共轭效应所致。

Result :There was no significant difference between sexes,ages and sides.The fibrillation potential amplitude was maximum at 3 to 4 months after denervation of the posterior cricoarytenoid muscle or at 5 to 6 months after denervation of the thyroarytenoid muscle and still remained at certain level for years in some patients.Significant difference was showed in complete and incomplete nerve injuries groups,but changes of amplitude with time in incomplete nerve injuries group were small.

结果:不同性别、年龄及不同侧的纤颤电位波幅间的差异无显著性,失神经环杓后肌纤颤电位波幅均值在病程2~<4个月时最高,而失神经甲杓肌纤颤电位波幅均值在病程4~<6个月时最高,相当一部分患者的纤颤电位波幅晚期仍维持一定水平,并且神经完全损伤者和不完全损伤者各时间纤颤电位波幅均有显著性差异,而神经不完全损伤者各时间幅度变化小。

In order to further understand combining characteristic of cyclohexyl methylphosphonofluoridate and isopropyl methylphosphonofluoridate and contribute more scientific data for its medical protection, the potency of inhibition of acetylcholinesterase activity induced by GF, GF+GB and the effects of reactivation by oximes pyramidoxime monohydrate(HI-6) and pyridine-2-aldoxime methylchloride(2-PAM-Cl) in rat brain were investigated with DTNB microanalysis in this study.

为进一步了解甲氟膦酸环己酯与甲氟膦酸异丙酯的联合特性,为制订医学防护措施提供更多的理论依据,用微量DTNB法对GF,GB和GF与GB混合对大鼠脑乙酰胆碱酯酶的抑制及肟类重活化剂酰胺磷定(HI-6)和氯磷定(2-PAM-Cl)的重活化作用进行了研究。

In Chapter 4, the radical cyclizations of methyleneamino and imino compounds containing C=N double bonds are studied.

论文的第四章,对含C=N双键的亚甲氨及亚氨的自由基环合反应进行了研究。

From Leontopodium nanum (collected from Zhang County, Gansu Province), 12 compounds were isolated, of which 9 compounds have been identified. Among them, a derivative of coumarin is new.

从采自甘肃漳县的矮火绒草全草的甲醇提取物中,采用同样方法共分离纯化得到12个化合物,鉴定了9个化合物的结构,其中有1个新化合物,命名为6,7-并二氧六环[2-(1-甲酯基-1-甲基)-甲烯基]-香豆素(1)。

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