乙醇酸

By using gas chromatography technique nine kinds of fragrance components(acetic aldehyde,ethyl acetate,ethanol,propyl acetate,3-hydroxy-2-butanone,acetic acid,furfural,metacetonic acid,2,3-butylene glycol)were measured quantitatively in different kinds of Shanxi overmature vinegar and the other kinds of vinegar.

应用气相色谱方法对山西老陈醋和其他种类醋的9种香气成分(乙醛、乙酸乙酯、乙醇、乙酸丙酯、3-羟基-2-丁酮、乙酸、糖醛、丙酸、2，3-丁二醇)进行了定性、定量测定，并用聚类分析、模糊综合评判、方差分析、回归分析的方法对实验结果进行了数理分析。

Esterification of phenethyl alcohol with acetic acid was studied using lanthanum chloride supported on activated carbon as heterogeneous catalyst.

以活性炭负载三氯化镧为非均相催化剂，对乙酸与苯乙醇之间的酯化反应进行了研究，考察了催化剂用量、醇酸摩尔比、反应时间对乙酸苯乙酯收率的影响。

The volatile flavor compounds of Nanx wudl at the start stage of fermentation mainly were hydrocarbon compounds and aldehydes, ketones from lipids oxidation, After 180 days, ethyl hexanoate, ethyl acetate, phenethyl alcohol, acetic acid and ethyl octanoate were predominant.

发酵180d后，主要风味组分是己酸乙脂、苯乙醇、乙酸乙脂、乙酸和辛酸乙脂。

It was firstly found that the Pb-pheophytin complex could be easily formed only with the reaction of Pb〓 with pheophytin in ethanol medium.

首次发现用高氯酸铅与脱镁叶绿素在乙醇溶液中形成铅叶绿素配合物。

The ultrathin cryosections and ethanolic phospho tungstic acid staining sections of rat atrial cardiocytes were prepared. Quantit ative electron probe Xray microanalysis of Hall continuum method was adopted to measure the alteration of Ca content in ASG at the exact time intervals of 15, 30, 60, 120 min after the adrenaline administration.

冷冻超薄切片技术和磷钨酸-乙醇特殊染色技术制备大鼠心房切片。X射线显微定量分析采用Hall连续谱法，用以测量在肾上腺素处理后15、30、60和120 min时ASG中钙含量的变化。

The effects of ethanol washing and water washing on structure, morphology and texture properties of pseudoboehmite-calcined γ-Al2O3 were comparatively studied with XRD, FT-IR,TG-DSC,TEM,BET and mercury porosimeter.

采用H2O2沉淀铝酸钠溶液和乙醇分散并洗涤沉淀相结合的方式成功地制备出了大孔容纳米γ-Al2O3纤维。

In order to understand the changes in physiology and the storability of blueberry fruits introduced to southern part of China, and to provide scientific basis for suitable packaging materials, changes of total soluble solid content, vitamin C content, acetaldehyde content, ethanol content, protopectin content and anthocyanin content, respiration rate, polygalacturonase and pectinesterase activities, weight loss and rotted rate of blueberry fruit warn investigated. Different packaging films were used, and the storage temperature was under 2℃.

为了解引种到我国南方栽培的蓝浆果鲜果低温贮藏期间的生理变化状况，并为保鲜贮藏选择适宜的包装材料提供科学依据，研究了在2℃条件下，不同薄膜包装处理对蓝浆果果实贮藏期间可溶性固形物、维生素C、乙醛、乙醇、原果胶和花色苷的含量，以及呼吸强度、多聚半乳糖醛酸酶和果胶甲酯酶活性、失重率、腐烂率变化的影响。

TiO2 hollow nanofibers have been successfully synthesized by an electrospinning technique, using Ti(OC4H9)4, polyvinyl pyrrolidone and absolute ethanol as the starting materials.

采用静电纺丝技术，以钛酸丁酯[Ti(OC4H9)4]、聚乙烯吡咯烷酮和无水乙醇为原料，制备了TiO2空心纳米纤维。

DHCC Constance in the chemistry belongs to the onlighted Cyclopentanoperhydrophenanthrene when it reacted together with the acid Constance it could transform into the fluorescence phenol.we did the flouric determination for the DHCC, in which treated by the ethanol-sulfuric acid or acetic anhydride-methylene chloride-sulfuric acid, acquired standard curve in the 0-40μg/ml presented the liner relet...

DHCC类物质在化学上属于不发光的环戎烷多氢菲类，但与酸性物质一起反应时，可转化为产生荧光的酚类。用乙醇硫—酸或乙酸酐—二氯甲烷—硫酸处理后的DHCC进行荧光检测，获得标准曲线0—40μg/ml范围内呈线性关系，检出的最高灵敏度可达300ng/ml。该方法可用于分离后的DHCC及单一种DHCC代谢物的定性及定量分析。

Two solvent systems which were MeOH -50% MeOH and 95% alcohol - water were studied by the content of salvianolic acid B and salviol ⅡA and the icon of Salvia miltiorrhiza Bge..

采用C18柱，乙腈-0.35%冰醋酸溶液梯度程序洗脱，以丹参酮ⅡA和丹酚酸B含量为指标并结合图谱，综合考察甲醇-50%甲醇、95%乙醇-水两套溶剂系统提取丹参药材的效果。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。