查询词典 dimethylbenzene

Methods: Based on national standard, detected n-hexane, benzene, toluene, dimethylbenzene, ethyl acetate, butyl acetate and butanone in 450 factories.

根据中华人民共和国国家标准，对昆山市的450家接触正己烷、苯、甲苯、二甲苯、乙酸乙酯、乙酸丁酯、丁酮7种有机物的企业车间空气进行采样检测。

Methods Analgesic effects of Shengning suppository were observed with pain model mice by acetic acid or hot plate test. Antiinflammatory effects were studied with ear acute edema model induced by dimethylbenzene in mice and rat foot edema model induced by carrageen, and antipruritic action was observed with allergic pruritic model caused by histamine in guinea pigs.

采用二甲苯所致的小鼠耳廓肿胀和角叉菜胶所致大鼠足跖肿胀炎症模型，热板法和扭体法及磷酸组织胺的致痒试验，观察参宁栓的抗炎、镇痛、止痒作用。

It could also suppress paw edema induced by carrageenin in rat and writhing induced by acetic acid in mice, but has no effect on the ear swelling caused by dimethylbenzene and cotton granulation hyperplasia and latent period of pain reaction in tail immersion test in mice.

对角叉菜胶致大鼠足肿胀和醋酸致小鼠扭体反应有一定的抑制作用，但对二甲苯致小鼠耳肿胀、小鼠棉球肉芽肿增生、小鼠温浴致痛反应潜伏期无明显影响。

Methods Animal inflammatory models were established by injection of dimethylbenzene for mice ear swelling, carrageenin for rat footpad, cotton pellet wool for rat granuloma respectively. The content of prostaglandin E2(PGE2) and leukotriene B4(LTB4) from peritoneal macrophages were measured by RIA and RP-HPLC respectively.

采用二甲苯诱导的小鼠耳肿胀、角叉菜胶诱导的大鼠足肿胀、棉球诱导的大鼠肉芽肿模型观察TFC的抗炎作用；分别采用放射免疫法和反相高效液相色谱法检测TFC对大鼠腹腔巨噬细胞产生前列腺素E2(PGE2)和白三烯B4(LTB4)的影响。

Methods Antipyretic action of CSC was observed on rabbit fever models induced by lipopolysaccharide and rat fever models induced by baker's yeast. Rat models with pedal swelling induced by carrageenin, mouse models with auricle swelling induced by dimethylbenzene and mouse models with celiac capillary hyperpermeability induced by acetic acid were used to observe the anti- inflammatory action of CSC. Its acute toxicity in mice was also evaluated.

方法］采用细菌脂多糖致家兔发热、啤酒酵母致大鼠发热动物模型，观察穿心莲软胶囊的解热作用；采用角叉菜胶致大鼠足肿胀、二甲苯致小鼠耳肿胀和醋酸致小鼠腹腔毛细血管通透性增加的动物模型，观察穿心莲软胶囊的抗炎作用，并对小鼠进行该制剂的急性毒性试验。

To be different from the already chloromethylation catalyst, it has a certain amount of moisture wet, which will not produce huge amounts of doughtic cancerogenic chloromethyl methyl ether during and after the reaction.4,4\'-bisbiphenyl, 1,4-bisbenzene, 1,4-bis(chloro- methyl)-2,5-dimethylbenzene, 1,5-bis-2,4-dimethylbenzene, 4-(chlor- omethyl)-1,2-dimethylbenzene, 1,2-bis-4,5-dimethylbenzene, 5,8-bis-1,2,3,4-tetrahydronaphthalene, 3,3\',5-tris-4,4\'-bisbiphenyl and 3,3\', 5,5\'-tetrakis-4,4\'-bisbiphenyl were synth- esized by using this new catalyst. Results indicated that when the reaction temperature was 55～60℃, the reaction time was 12h, the catalyst which consists of the concentration of 80%H_2SO_4, HAc and Lewis acid, the amount of Lewis acid 0.15 mol(nLewis:nbiphenyl=1.5:1), yield of biphenyl chloromethylation product 4,4\'-bis(chrolomethylbiphenyl can reach a maximum 85%.

采用这种催化体系完成了4，4′-二氯甲基联苯、对二氯甲基苯、1，4-二氯甲基-2，5-二甲基苯、1，5-二氯甲基-2，4-二甲基苯、4-氯甲基-1，2-二甲基苯、1，2-二氯甲基-4，5-二甲基苯、5，8-二氯甲基-四氢萘、3，3'，5-三氯甲基-4，4'-二甲基苯和3，3'，5，5'-四氯甲基-4，4'-二甲基苯的合成，结果表明：在反应条件为：反应温度55～60℃，反应时间12h，选择80%H_2SO_4、冰醋酸和Lewis酸为催化剂，反应最佳反应Lewis酸用量是0.15mol(和原料比为1.5：1)，反应效果最好，联苯氯甲基化产物(4，4′-二氯甲基联苯)收率为85%；在反应条件为：反应温度70℃，反应时间8h，80%H_2SO_4、冰醋酸和Lewis酸为催化剂，反应最佳反应Lewis酸用量是0.1mol(和原料比为1：1)时，反应效果最好，苯的氯甲基化产物收(来源：ABd0C论文eded网www.abclunwen.com)率为75%；在反应条件为：在反应条件为：反应温度40℃，反应时间10h，60%H_2SO_4和Lewis酸为催化剂，反应最佳反应Lewis酸用量是0.1mol(和原料比为1：1)时，反应效果最好，对二甲苯氯甲基化产物(1，4-二氯甲基-2，5-二甲基苯)收率为78.5%；在反应条件为：反应温度35℃，反应时间10h，60%H_2SO_4、冰醋酸和Lewis酸为催化剂，反应最佳反应Lewis酸用量是0.1mol(和原料比为1：1)时，反应效果最好，间二甲苯氯甲基化产物(1，5-二氯甲基-2，4-二甲基苯)收率为81.5%。

Results: The 12 kinds of toxicants including methyl acetate, ethyl acetate, benzene, toluene, ethylbenzene, butyl acetate, p-dimethylbenzene, m-dimethylbenzene, o-dimethylbenzene, n-butanol, cinnamene and cyclohexanone were separated well. Good linear relationship sensitivity and reproducibility were obtained and detection limits (S/N=3) of them were 0.2 mg/l respectively. Conclusion: In this paper, a new method for simultaneous determination of 12 kinds of toxicants by using gas chromatography has been described.

结果：对乙酸甲酯、乙酸乙酯、苯、甲苯、乙酸丁酯、乙苯、对二甲苯、间二甲苯、邻二甲苯、正丁醇、苯乙烯、环己酮12种有毒物质的分离效果好，线性和重现性均较好，方法的检测限达到0.2 mg/L。

The experimental results showed that under the optimum conditions the concentrations of dimethylbenzene and butylacetate were above 95% in top distillate product, and the yield of dimethylbenzene and butylacetate was 62% and 99.45,respectively.

结果表明：在最佳的工艺条件下，二甲苯和醋酸丁酯在馏出液中的含量均达到95%以上，收率分别达到62%和99.4%。

The standard is suitable for testing the density of benzene, toluene and dimethylbenzene of air in living district, and also suitable for density testing on benzene, toluene and dimethylbenzene of air indoor.

本标准适用于居住区大气中苯、甲苯和二甲苯浓度的测定。也适用于室内空气中苯、甲苯和二甲苯浓度的测定。

Effect of A_3 on dimethylbenzene-induced mice ear edema Method:After peroral A_3 3 days, the mice ear edema models induced by dimethylbenzene were prepared. The mice ear edema was tested at 1 h.

A_3对二甲苯所致小鼠耳廓肿胀的影响方法：连续灌胃给药3天(1次/天)后，采用二甲苯制备小鼠耳廓肿胀的炎症模型，观察二甲苯致炎后1 h药物对小鼠耳肿胀的影响。

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。