乙酸

A dual-wavelength resonance light scattering ratiometric method based on the interaction between bromothymol blue and cetylpyridinium bromide was developed for the determination of CPB.

在pH 1.5的乙酸钠-HC l缓冲溶液中，CPB本身的共振光散射很弱，BTB有一定的共振光强度，加入CPB后BTB的共振光信号显著增强，最大散射峰位于523 nm，且散射光强度与CPB的浓度呈线性关系，可以通过单波长共振光散射法检测CPB，CPB质量浓度的线性范围和检出限分别为0.05~0.60 mg/L和42μg/L。

Novel ZnSe nanosheets with tunable size and phase have been facilely synthesized via hydrothermal routes in the presence of neutral butylamine as structure-directing agent and ethylene diamine tetraacetic acid as stabilizer.

以乙二胺四乙酸为稳定剂、丁胺为结构导向模板，采用水热合成方法制备了尺寸和晶型可控的ZnSe纳米片晶；利用XRD，TEM，SEM以及紫外-可见漫反射等手段对所得的产物进了表征，结果表明，通过改变水热温度和BA用量，可以实现ZnSe纳米片晶的大小和物相的调控，并初步分析了其形成过程

Except heptanoyl chitin, four of them,i.e.acetyl chitin,propionyl chitin,butyryl chitin and hexanoyl chitin,had high degree of substitution(from 1.5 to 2.0)and exhibited lyotropic liquid crystalline behavior and cholesteric phase.

文摘：四种羧酰化甲壳素即乙酰化、丙酰化、丁酰化和己酰化甲壳素在二氯乙酸溶液中均呈现胆甾型溶致液晶相。

ResultThe Buxus Microphylla leaf ethyl acetate extraction (high-dose and low dose) have obvious effect on reducing the serum total cholesterol and triglyceride, moreover, the high-dose ethyl acetate extract reducing blood lipid was better than the other extracts.

结果 小叶黄杨叶乙酸乙酯提取物的高、低两个剂量组均有显著的降低血清总胆固醇和三酰甘油的作用，小叶黄杨叶的水提取物和石油醚提取物均有显著的降低血清中总胆固醇的作用，小叶黄杨叶氯仿提取物及正丁醇提取物均无降血脂的作用。

From Cacalia deltophylla (collected from Luqu County, Gansu Province), 22 compounds were isolated, of which 15 compounds have been identified. Among them, two compounds are new. They are named as 3-methyl-4-hydro-8-acetyl-furanonaphth-9-one and 1hydroxy-2-methoxy-3-acetyl-4, 8-dimethyl-5, 8-dihydro-naphthalene.

从采自甘肃省碌曲县的三角叶蟹甲草全草的甲醇提取物的石油醚部分和乙酸乙酯部分中，采用同样方法分离得到22个化合物，鉴定了其中的15个化合物，其中有2个为新化合物，分别命名为3-甲基-4-氢-8-乙酰基-呋喃萘-9-酮（2）和1-羟基-2-甲氧基-3-乙酰基-4，8-二甲基-5，8-二氢-萘（3）。

Butyric acid. The addition of probiotics to blueberry husks lowered the level of caecal acetic acid and increased that of propionic acid, while rye bran in combination with probiotics increased caecal CA levels and decreased distal colonic levels.

在黑莓壳中加入有益菌种能降低盲肠内的乙酸并增加其内的丙酸，然而黑麦麸与有益菌联合能增加盲肠内的CA水平并降低结肠远端的CA水平。

Second acid is calcic - one of bacterium of important cause of disease that Bowman does not move bacillus is hospital infection, in surroundings of extensive consist in.

概要： 乙酸钙-鲍曼不动杆菌是医院感染的重要病原菌之一，广泛存在于四周环境中。

Fluid of profess to convinced of glue of result compound bee can restrain the formation of reserpine ulcer significantly, the heal of acerbity to second burn ulcer has apparent stimulative effect, can restrain the formation of pylorus ligate ulcer significantly, reduce cankerous area significantly, its action and positive contrast medical Xi Mi comparatives for man.

结果复方蜂胶口服液可显著抑制利血平溃疡的形成，对乙酸烧灼型溃疡的愈合有明显的促进功能，可显著抑制幽门结扎溃疡的形成，并显著减少溃疡面积，其功能和阳性对照药西咪替丁相当。

The ethanol extract and ethyl acetate extract of Capparis Spinosa have the effect against skin fibrosis.

槌果藤乙酸乙酯提取物、乙醇提取物具有抗皮肤纤维化作用。

Results On week 2, 4, 6, the thickness of dermis was 23.22, 24.94, 19.97 μm respectively in mice treated with ethanol extract of Capparis Spinosa, 27.66, 26.15, 22.13 μm respectively in those treated with ethyl acetate extract of Capparis Spinosa.

目的 观察槌果藤乙酸乙酯提取物、乙醇提取物对硬皮病小鼠模型真皮厚度、Ⅰ型、Ⅲ型胶原合成及转化生长因子-β1表达的影响。

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。