查询词典 muconic

OH radicals produced by ultrasound in aqueous solution attack phenolic cycle at adjacent or para position of the hydroxyl on phenol so that phenol is changed into small organic molecules such as muconic acid, maleic acid and ethane diacid. These small organic molecules will be oxidized to form carbon dioxide and water by.

苯酚超声降解的作用机理是，超声空化在水溶液中产生的·OH自由基进攻苯酚苯环上羟基的邻位或对位而使苯环断裂生成己二烯酸、顺式丁烯二酸和乙二酸小分子有机物而使苯酚得以降解，这些小分子有机物在·OH自由基的进一步作用下最终被氧化成CO〓和H〓O。

The chemical analysis result of modified lignin by alkaline-oxygen treatment is as following:The chemical analysis result of modified lignin by alkaline-oxygen treatment showed that the carboxyl group of modified lignin increased, since muconic acid type structure were generated from phenolic structure by ring-open reaction during alkaline-oxygen treatment.

氧碱处理改性木素的化学分析结果见下表；┌────┬────┬─────┬────────────────┬────┐│改性本素│OCH_3│总糖│C_9单元式│COOH │├────┼────┼─────┼────────────────┼────┤│O_4 │8.49 │0.07 │C_9H_(10.45)O_(3.7)(OCH_3)_(053)│10.82 │└────┴────┴─────┴────────────────┴────┘氧碱处理改性木素的化学分析结果表明，改性木素的羧基含量明显增加，在氧碱处理的过程中，由于芳环的开裂，(来源：ABCe6论6d文网www.abclunwen.com)形成了己二烯二酸结构，因此改性木素具有较高的反应活性，易与Al~(3+)形成络合。

Soil conditioning agent; utilization of black liquor; modified lignin; aluminum toxicity; ligand; sulfonated lignin; alkaline -oxygen treated lignin; gel filtration chromatography; muconic structure.

农业科技，农业基础科学，土壤学土壤改良剂；黑液利用；改性木素；磺化木素；氧碱处理木素；铝毒；螯合剂；凝胶过滤色谱；己二烯二酸结构

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。