查询词典 acrylic acid

Experimental results showed that both anisaldehyde and anisic acid have an iso-absorptive point in their UV spectra.

考察了茴香醛、茴香酸及其混合物的紫外光谱吸收特性，建立了一种能同时测定茴香醛和茴香酸含量的紫外分光光度法。

UV absorption characteristics of anisaldehyde and anisic acid were investigated.

考察了茴香醛、茴香酸及其混合物的紫外光谱吸收特性，建立了一种能同时测定茴香醛和茴香酸含量的紫外分光光度法。

Methods This title compound was prepared using the O-phenylene diamine and the anisaldehyde as the raw material,methanol as the solvent,and the phosphoric acid makes the oxidant.

方法本课题以邻苯二胺和对甲氧基苯甲醛为原料，在甲醇为溶剂，磷酸为催化剂的酸性条件下，一步反应制得2-(4-甲氧基苯基)苯并咪唑。

More metabolites could be detected when the TLC was carried out in system II (chloroform∶methanol=9∶1) and system III (butanol∶acetic acid∶water=4∶1∶5) with anisaldehyde test solution.

对每一株菌而言，产生最多产物的发酵培养基各不相同，为了获得尽可能多的次生代谢产物，不同菌株选用的发酵培养基不一样。

Organization: Institute of Chemical Engineering and Environment, Qingdao UniversityAbstract: A new Schiff base and its cupric complex of L-lysine and anisaldehyde were synthesized by stepwise synthesis method in anhydrous system, with basic essential amino acid L-lysine and natural product anisaldehyde as precursor.

摘 要：以碱性必需氨基酸L-赖氨酸和天然产物茴香醛为前体物，采用分步合成法在无水体系中制备了L-赖氨酸缩茴香醛单席夫碱及其铜配合物。

The thermal stability and optical stability of Star Anise Oil Resin Microcapsules Microcapsule were determined through the measure of retention rate, acid value, POV value.

本试验通过对保留率、酸价、POV值的测定对八角油树脂微胶囊的热稳定性和光稳定性进行测定。

Compared with the common vegetable oil, the fatty acid composition of anise seed volatile oil was similar, while fatty acids content of anise seed shell volatile oil was little, as spices is still the first choice.

用索氏法分别提取八角籽和果壳挥发油，用气相色谱法测定了挥发油中八种脂肪酸的含量，与常见植物油比较，八角籽挥发油与其他食用植物油脂肪酸组成类似，而八角壳油的脂肪酸含量较低，作香料仍然是首选。

In the acylation reaction between anisole with acetyl chloride, The catalyst of ZnCl〓/HY-98 prepared by MWI had the best catalytic activity and the selectivity of p-methoxy acetopheone. The catalytic active centers were ZnCl〓 dispersed in zeolite and the Bronsted acid sites in HY-98 zeolite itself.

在苯甲醚与乙酰氯的酰化反应中，微波固相法制备的ZnCl〓／Y催化剂有相对较好的催化活性和选择性，起催化作用的主要是分散在分子筛表面的ZnCl〓和分子筛本身的B酸。

Other Ingredients: Corn syrup, organic sugar, gelatin, pectin, citric acid, strawberry-banana flavor, orange flavor, lemon flavor, colors added (black carrot juice concentrate, annatto, turmeric), fractionated coconut oil and beeswax.

其他配料：玉米糖浆，有机糖，明胶，果胶，柠檬酸，草莓，香蕉味，橘子味，柠檬味，增加颜色（黑色胡萝卜浓缩汁，红木，姜黄），分馏椰子油和蜂蜡。

Water, Peas, Carrots, Enriched Macaroni (Durum Wheat Semolina, Egg Whites, Niacin, Ferrous Sulfate, Thiamin Mononitrate, Riboflavin, Folic Acid), Cheddar Cheese, Nonfat Milk, Butternut Squash, Modified Cornstarch, Cream, Butter, Salt, Disodium Phosphate, Wheat Flour, Soy Lecithin, Annatto and Paprika Extract Colors, Natural Flavor.

水，豌豆，胡萝卜，丰富通心粉（硬粒小麦盛放在铝制容器，鸡蛋白人，烟酸，硫酸亚铁，单硫胺素，核黄素，叶酸），切达干酪，脱脂牛奶，巴特纳特壁球，改性玉米淀粉，奶油，黄油，盐，磷二钠，面粉，大豆卵磷脂，胭脂树和红辣椒提取物的颜色，天然美味。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。