查询词典 acetic acid

The influences of the type and dosage of the aldehyde, organic acids, as well as the water content in the reaction system on the racemization were examined in detail, and L-Glu was racemized quickly in the presence of 0.2 molar ratio of L-Glu to salicylaldehyde in acetic acid containing 20% water.

详细考察了腔的种类及用量、羧酸溶剂的种类、反应体系的含水量对消旋化的影响，结果表明L谷氨酸在含20%水的乙酸溶剂中，以水杨醛作为催化剂（水杨醛与L-谷氨酸的物质的量比为0.2）的优化条件下可以快速地被消旋化。

To the separatory funnel zhongjia acetic acid (4%) to-amoxycillin.

向各分液漏斗中加乙酸(4%)至10mL。

Objective:To investigate the antinociceptive effect of BTX-A and its influence on the serumal TNFin an acetic acid-induced visceral pain model in rats.

目的：探讨A型肉毒素在大鼠化学性内脏损伤中的止痛作用及对血清肿瘤坏死因子的影响。

Injection of BTX-A intraperitoneally significantly reduces acetic acid-induced nociceptive behaviors after 1 week and 4 weeks, decreases the level of serumal TNF.

腹腔注射BTX-A能缓解乙酸所致的大鼠内脏损伤的疼痛行为学反应，减少血清TNF释放，BTX-A可能通过减少血清TNF释放，减轻炎性反应，减少疼痛刺激。

Methods: The various animal models including writhing experiment in mice, rat's toes swelling induced by carrageenan and the increase of capillary permeability in mice induced by acetic acid, were used to determine the effects of compound sparganium stoloniferum capsules.

建立多种动物模型，通过对醋酸所致小鼠扭体反应、角叉菜胶所致大鼠足肿胀、醋酸所致小鼠腹腔毛细血管通透性影响等试验，研究复方三棱胶囊的药理和毒理作用。

Methods: A rat chronic gastric ulcer model was made by infecting Hp(NCTC11637 strain)after injecting acetic acid into the subserosa of the stomach. In the experiments, the techniques of immunohistochemical stain and in situ hybridization etc. were used to observe the expression of bFGFmRNA and PCNA in th ulcer.

采用幽门螺杆菌多次重复感染乙酸性胃溃疡大鼠，造成Hp相关的慢性胃溃疡模型，运用免疫组化和原位杂交等技术观察该方对Hp感染的慢性胃溃疡大鼠胃黏膜碱性成纤维生长因子mRNA和胃黏膜细胞增殖核抗原的影响。

A rat model induced by injecting acetic acid into the subserosa of stomach was used.Uicer index was measured,the level of nitri oxide in serum and plasma endothelin-1(ET-1) was examined.

采用大鼠乙酸性胃溃疡模型，分别以消溃灵灌胃和左旋精氨酸、亚硝基左旋精氨酸腹腔内注射治疗7 d和14 d后，测定溃疡指数、溃疡抑制率，检测血清一氧化氮及血浆内皮素(ET-1)含量。

By using isopropyl benzene as the internal standard material, using Agilent 1100 HPLC, using methanol-acetonitrile-water as mobile phase ,using three-component grade elution program, the components that contain benzene such as TALD,PT,4-CBA,TA,BA,PX and internal standard material isopropyl benzene in liquid phase product was analysed. Shimazu6A GC was used to analyse the solvent acetic acid and internal standard material isopropyl benzne in liquid phase.

以异丙苯为内标物，应用Agilent1100高效液相色谱仪，用甲醇－乙腈－水为流动相，采用三元梯度洗脱程序分析液相产物中的含苯环组分对甲基苯甲醛、对甲基苯甲酸、对羧基苯甲醛、对苯二甲酸、苯甲酸、对二甲苯和内标物异丙苯，应用Shimazu6A气相色谱仪分析液相中的溶剂醋酸和内标物异丙苯。

Bis (P—bromobenzylamino) ethane and 1,2—bis (m—Iodobenzylamino) ethane may be prepared by condensation of the corresponding halo benzaldehyde with ethylenediamine and followed by catalytic hydrogenation of the Schiff's bases over Pto_2 in glacial acetic acid solutions: Both Ⅱa and Ⅱb may react in neutral mediam with aldehydes to form well—defined crystalline tetrahydro—imidazole, which may be served as derivatives of identification for aldehydes: Under the same condition, however,Ⅱb may ...

用1，2-二乙烷与二十余种醛类作用，得到有固定熔点的晶体衍生物，它们的熔点分布在85—210℃之间，产率为40—96％，这试剂与甲基酮类在相同条件下无反应，因此，它可作为鉴定醛类的专属试剂。 2。上述衍生物用稀盐酸在室溫处理，能发生水解，可以定量地收回原来的醛，因此这试剂又可作为分离醛类的试剂。 3。上述衍生物可以用非水滴定法半微量地测定其分子量可作为鉴定醛类的另一项参考数据。 4.1，2-二乙烷与醛类能生成晶体衍生物，但这试剂也与甲基酮在同样条件下发生反应，所以不适合作为鉴定醛类的专属试剂。

Yellow Submarine' while preserving overall quality, the effects of silver thiosulphate,naphthalene acetic acid, gibberellin and benzyladenine were investigated.

黄色潜水艇'，同时维护整体素质，影响硫代银，樟脑，乙酸， 920 ( 2274 )和苄进行了调查。

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。