醋酸

Latest researches in the catalysts for synthesis of carbamate by ammonolysis of dimethyl carbonate;2. Progress in the catalysts for synthesis of carbamates by ammonolysis of dimethyl carbonate;3.4,4′-Methylene diphenyl carbamatewas synthesized by ammonolysis of dimethyl carbonate, a substitute of phosgene, and 4,4′-diaminodiphenyl methane with anhydrous zinc acetate as catalyst.

用碳酸二甲酯代替光气，以4，4′-二氨基二苯基甲烷为原料，在无水醋酸锌催化剂的作用下，经胺解反应合成了4，4′-二苯甲烷二氨基甲酸甲酯；测定了MDC的熔点；采用傅里叶变换红外光谱和氢核磁共振对产品结构进行了表征；考察了反应温度、DMC用量、反应压力、反应时间、催化剂用量对MDC收率的影响。

The mineral composition of interstitial phase and chemical composition of ferrite phase in the clinkers which were manufactured by Kunming Cement Plant utilizing phosphorous slag, copper slag and pulverized fly ash simultaneously were studied by means of extraction with salicylic acid methanol and acetic acid aqueous solution and XRD.

采用水杨酸甲醇溶液和醋酸水溶液选择萃取及XRD方法，对昆明水泥厂以磷渣、铜渣和粉煤灰配料生产的硅酸盐水泥熟料进行了矿物组成和铁相化学组成的研究。

METHODS: The serum levels of sCD23 in uremic patients during hemodialysis were measured by double antibody with ELISA. Three kinds of dialyzers (cellulose acetat, hemophan and polysulfone) were used. The patients were divided into first use and reuse groups.

采用双抗体夹心ELISA法，对尿毒症维持性血液透析患者采用醋酸纤维素膜、血仿膜和聚砜膜透析器进行透析，分为初用组和复用组检测透析过程中不同透析时间患者血清sCD23水平的变化。

In this thesis, synthesis of fluoroalkyl-containing heterocycles from rhodium acetate catalyzed reactions of fluorinated α-diazo-β-ketoestes were studied in detail.

本论文系统地研究了氟烷基和二氟亚甲基取代的α-重氮羰基化合物的合成及其在醋酸铑催化下的反应。由此合成了一系列氟烷基和少氟取代的杂环化合物。

Methods The amino acids in the injections were pretreated with 6-aminoquinolyl-N-hydroxysuccinimdyl separately and their derivatives were analyzed on Waters 2695 HPLC using AccQ-Tag column. Gradient eluents consisted of sodium acetate solution (pH 4.95), acetonitrile and water. The Detection wavelength was 248 nm and column temperature 37℃.

采用AccQ-Tag法，以6-氨基喹啉－N-羟基琥珀酰亚胺基甲酸酯为衍生试剂，与复方氨基酸注射液(18AA-V)中17种氨基酸柱前衍生，用Waters 2695 HPLC仪器，AccQ-Tag柱，以醋酸钠(pH 4.95)缓冲液为流动相A，乙腈为流动相B，水为流动相C进行梯度洗脱，检测波长为248 nm，柱温为37℃，进样量为5μL。

OBJECTIVE To study the formulation and preparation technique of intravenous dexamethasone acetate emulsions and also investigate the properties.

目的 研究醋酸地塞米松静注乳剂的处方及制备工艺，并对其性质进行考察。

In the studies, pectin enzyme and fibred enzyme were used to hydrolysis the mixture of orange pulp and dregs.

经过酒精发酵、醋酸发酵等主要工艺，酿制的柑桔果醋具有柑桔的天然色泽，酸味柔和，具有怡人的果香，无苦味。

The assistants such as carboxylic, vitamin, microelements, are either the additives of food (such as acetic acid, citric acid, benzoic acid), or the nutrition fortifiers.

其他辅助原料羧酸、维生素、微量元素，或是食品添加成分（如醋酸、柠檬酸、苯甲酸），或是营养强化剂。

The present article obtains fruit vinegar by alcohol and acetic acid fermentation,with Banana Peel being raw material.

以香蕉皮为原料，经酒精发酵和醋酸发酵制得风味纯正的香蕉皮膳食纤维果醋。

Scientific compatibility, for the development of good-tasted fruit vinegar.

科学配伍，研制出醋酸刺激性低、果香浓郁的调味香醋。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。