碱的

The alkalosis that result s from these processes is called a contraction alkalosis.

由这种方式引起的碱中毒被称为浓缩性碱中毒。

Objective To observe the effects of oxymatrine on action potential in normal rats and arrhythmic rats induced by aconitine.

目的：观察氧化苦参碱对正常及乌头碱诱发大鼠心律失常模型动作电位的影响。

Objective:To investigate the effect of berberine on lymphocyte-endothelium adhesion and cell adhesion molecules.

摘 要 目的：通过研究小檗碱对淋巴细胞与血管内皮细胞粘附及粘附分子的影响，探讨小檗碱免疫抑制作用机制。

A betaine commonly occurring in the liver and in skeletal muscle that functions in fatty acid transport across mitochondrial membranes.

肉碱一种甜菜碱，通常出现在肝和骨骼肌里，在脂肪酸穿过线粒体膜的运输过程中起作用

A new surfactant-polymer binary compound system without alkali was proposed and used to attain ultra-low interfacial tension of oil.

为此提出利用不加碱可形成超低界面张力的聚合物/甜菜碱表面活性剂二元复合体系驱油。

Comparison of brucine and nitrogen oxides isobrucine in their anticancer and antioxidation effect.

马钱子碱与异马钱子碱氮氧化物抗肿瘤细胞生长及抗氧化损伤作用的比较。

The application of differential pulse polarography to brucine reaction product, having electroanalytical activity, with HNO_3 has been reported in this paper.

由于马钱子碱和硝酸反应后生成的产物具有电化学活性，因此，可以微分脉冲极谱法对马钱子碱进行测定。

The synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

合成方法包括：将摩尔比为1.04∶1的2-(5-(二甲氨基甲基-2-呋喃基甲基硫代乙胺与1-甲硫基-1-甲胺基-2-硝基乙烯加入水中，升温至48-52℃，于真空度0.02～0.05MPa反应4.5小时，反应完毕降温，用10％氢氧化钠溶液调pH＝11.0-11.4，抽滤，滤液降温至0～2℃，结晶12小时，离心甩滤，用纯化水漂洗滤饼，得雷尼替丁碱湿品；将雷尼替丁碱溶于乙醇中与盐酸反应，制备得到盐酸雷尼替丁，产品符合欧洲药典标准。

A mutagenic chemical that causes deamination and conversion of several bases into abnormal bases.

能引起脱氨基和将几种碱基转变成异常碱基的诱变性化学物质。

These dendritic NOBIN derived Schiff base ligands have been applied to titanium catalyzed hetero-Diels-Alder reaction of Danishefshy's diene and aldehydes, affording the corresponding 2-substituted 2, 3-dihydro-4H-pyran-4-one in quantitative yields and excellent enantioselectivities (up to 97. 2%ee). Comparing the reactivities and enantioselectivities of reaction catalyzed by the titanium complexes of these Schiff base ligands, it was found that a series of ligands L〓 were superior to the other three series of ligands L〓, L〓 and L〓, a significant positive NLE and a dendrimer effect existed in the L〓 dendritic catalyst system. The disposition of the dendritic wedges and the dendron size in the ligands were observed to have a significant impact on the enantioselectivity of the reaction.

NOBIN衍生的树枝状大分子希夫碱手性配体与钛形成的配合物在催化不对称杂Diels-Alder反应中的应用将得到的四个系列NOBIN衍生的树枝状希夫碱三齿手性配体与四异丙氧基钛形成的配合物用于催化Danishefsky's diene与醛的不对称杂Diels-Alder反应，通过反应条件的优化，获得了定量的收率和最高达97.2％ee值的对映选择性；考察了这四个系列NOBIN衍生的树枝状希夫碱钛配合物的催化活性和对映选择性，结果发现它们的活性次序依次为L〓≈L〓＞L〓＞L〓，对映选择性次序依次为L〓＞L〓＞L〓＞L〓。

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。