钠

The results showed that under 200 W power, in the present of various alkalis, e.g. Na2CO3, NaF, KF, NaHCO3, and DMF-H2O (V∶V=5∶3) used as solvent, PVC-TETA-Pd could catalyze sodium tetraphenylborate to react quantificationally with iodobenzene in 20 min without inert gas protection, and all the phenyl g...

实验发现：在微波功率为200W时，在Na2CO3，NaF，KF，NaHCO3等多种碱的存在下，以DMF的水溶液(V∶V=5∶3)为溶剂，在无惰性气体保护下，PVC-TETA-Pd催化四苯硼钠与碘代苯在20min内即可定量反应，与常规加热方式相比，节省了大量时间；同时也证明了四苯硼钠的四个苯基均可参与Suzuki偶联反应；该催化剂回收再利用3次后，仍具有较高的催化活性。

By reacting isobutyraldehyde with diethyl oxalate using sodium methoxide as catalyst,3-methyl-2-oxobutanoic acid,sodium salt was prepared by one pot.

采用甲醇钠催化异丁醛与草酸二乙酯反应，一釜法合成了3-甲基-2-氧代丁酸钠。

The data of element analysis,melting point,IR and NMR for the product are consistent with the standard data,the purity exceeds 98%.3-methyl-2-oxobutanoic acid sodium ; sodium methoxide ; isobutyraldehyde ; diethyl oxalate

WSR-1熔点仪；Vario EL元素分析仪(德国E le-mentar公司)；Nexus 870型傅立叶变换红外光谱仪；aV500核磁共振仪。1.2 3-甲基-2-氧代丁酸钠的制备将15.4 g(0.28 mol)甲醇钠与60 mL(1.5 mol)甲醇装入500 m

Is a research and development, production, trade and service-based economy of foreign trade entities, chemical raw materials to the professional operation of the main company's existing production of AC blowing agent, ferric chloride, hydrated Hydrazine, p-nitrophenol, m-phenylenediamine, phosphorus trichloride, phosphorus oxychloride, 2,4 - diamino benzene sulfonate, sodium dichloro isocyanurate, N-methyl-o-phenylenediamine Second hydrochloride fine chemical products such as the ability, and are obtained ISO9001 international quality system certification.

济南华尔沃进出口贸易有限公司是一家集研发、生产、贸易、服务于一体的外贸型经济实体，以专业经营化工原料为主，公司现有生产AC发泡剂、三氯化铁、水合肼、对硝基苯酚、间苯二胺、三氯化磷、三氯氧磷、2，4—二氨基苯磺酸钠、二氯异氰脲酸钠、N-甲基邻苯二胺二盐酸盐等精细化工产品的能力，并且均以取得ISO9001国际质量体系认证。

It indicates that the raw materials can be stored in temperature of 0-4℃ for 60 days, they must be immersed in clean water for more than one hour before processing, and peeling be carried out in flowing water; that color preserving solution should be 1.0% NaCl+0.2% citric acid+0.5% Vitamin C+110ppm dichloro isocyanuric acid sodium; that combined browning inhibiting solution is conspicuously effective, and immersion time better be around 20 minutes; that sterilization solution ought to be 200ppm dichloro isocyanuric acid sodium+0.5% ascorbic acid+0.3 citric acid, and 10 minutes' immersion will achieve the effect of sterilization and inhibiting browning; and that after 20-21 minutes of quick-freezing in temperature of -31℃~-32℃, the products can be preserved under -18℃ for a whole year.

通过对速冻牛蒡加工过程中原料储存、削皮方法、护色、浸泡时间、无热杀菌、包装形式等参数进行研究表明：原料0-4℃可储存60天，加工前用清水浸泡1小时以上，削皮时在流水中进行，护色液筛选的1.0% NaCl＋0.2%柠檬酸＋0.5%维生素C十110ppm二氯异氰脲酸钠；复合褐变抑制溶液在抑制褐变方面有显著的效果，浸泡处理时间为20分钟为宜；杀菌液为200ppm二氯异氰脲酸钠＋0.5%抗坏血酸＋0.3柠檬酸，浸泡10分钟即可达到灭菌和抑制褐变的作用；经-31℃~-32℃温度下速冻20~21分钟，产品在-18℃条件下可储存一年。

Results When the cells were treated with Sodium Selenite at a concentration of 2.0mmol//L lasting 72h, karyopyknosis and chromatin condensation were observed under microscope; When the cells were treated with Sodium Selenite at a concentration of 4.0mmol/L lasting 72h, the cells in G0/G1 and S phase was significantly decreased, a typical apoptosis peak before G1 phase was shown.

结果 2.0mmol/L亚硒酸钠作用72h， HE切片可见核固缩、染色质边集等改变；4mmol/L亚硒酸钠作用72h， G0/G1期和S期细胞明显减少，在细胞周期G1前期可见典型的细胞凋亡峰。

A technique of simultaneous quantitative determination of sodium laurate and sodium dodecyl bezene sulfonate in mixed solutions is developed by using high performance liquid chromatorgraphy.

建立了用高效液相色谱法同时测定月桂酸钠和十二烷基苯磺酸钠浓度的方法。

Methods: In acute or chronic experiment, all SD rats were randomly divided into three groups which included microthromboembolism group with the injection of 400 μg sodium laurate into the coronary arteries of SD rats, TS group with drinking telmisartan (10 mg/kg), and NS group with NS instead of drinking telmisartan (10 mg/kg), and NS group with NS instead of sodium laurate.

将SPF级SD大鼠冠状动脉注射月桂酸钠400μg后，随机分入微栓组和替米沙坦组（饮水中给药10mgkg^(-1)d^(-1)），对照组则以等量生理盐水替代月桂酸钠。

We used neuron from Lymnaea stagnalis to determine how lidocaine affects in, Na-H exchanger, and in.

我们用椎实螺属神经元来测定利多卡因如何影响细胞内 PH 值、钠氢交换及细胞内钠离子浓度。

Methods Mouse were smoking twice everyday in a self-made passive smoking cabinet, medicative group mouse were given respectively with sodium selenite, vitamin E, sodium selenite and vitamin E for 35 days.

方法小鼠置于自制被动吸烟箱中，每日吸烟两次，用药组小鼠分别给予亚硒酸钠、维生素E、亚硒酸钠和维生素E灌胃，连续35d。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。