醋酸铅

To explore the effect of lead acetate on the growth of murine mesenchymal stem cells in vitro.

目的：探讨醋酸铅对小鼠骨髓间充质干细胞生长的影响。

METHODS:Lead acetate of different concentration was used to feed female mice after copulation.

以不同浓度的醋酸铅饲喂交配后的雌鼠，其幼崽通过哺乳和直接饮水接触铅。

The method comprises:(1) weighing lead acetate hexahydrate and thioacetamide, and preparing aqueous solutions respectively, so that the concentration ratio of Pd2+ to S is 1:(1-4);(2) adding acetic acid into thioacetamide solution to adjust the pH value to 2-4;(3) adding poly surfactant into lead acetate solution, ultrasonicating to mix uniformly and obtain a colorless and transparent sol;(4) mixing the sol and thioacetamide solution;(5) placing the mixed solution in a sealed container, irradiating by 2.5 MeV and 40 mA electron accelerator with irradiation dose of 25-40 Mrad;(6) washing the product, centrifuging for separation, and drying to obtain black PdS nanoparticles.

本发明方法的工艺过程如下：首先称取一定量的六水合醋酸铅和硫代乙酰胺，各自配制成水溶液，其浓度比为使其中的铅离子浓度与硫原子浓度的比例为1∶1～1∶4；在硫代乙酰胺溶液中加入适量醋酸调节其pH值至2～4；醋酸铅溶液中加入少量表面活性剂聚乙烯醇，然后超声振荡，混合均匀，制成无色透明溶胶；随后将溶胶与上述的硫代乙酰胺溶液混合；将该混合液置于密闭容器中，并将其放置于2.5MeV、40mA的电子加速器产生的电子束辐照下进行辐照处理，其辐照剂量为25～40Mrad；然后将反应生成物清洗，并用高速离心机离心分离，然后干燥，最终得到黑色纳米硫化铅颗粒。

Wistar rats were injected intraperitoneally with lead acetate in dosage of 659 mg/kg body every day.

Wistar大鼠每天腹腔注射醋酸铅 659mg/kg ，在第 4周醋酸铅剂量降至 3 2 9 5mg/kg ，8周停止染毒。

Other methods include alkaline formation of lead battery positive plates and electrooxidation of lead acetate in an alkaline solution.

其他方法包括在碱性环境制备铅电池的正极和在碱性溶液中用醋酸铅进行电氧化。

Purpose:To investigate the antagonistic effect of nerve growth factor (NGF 2.5S) on the neurotoxicity of lead acetate.

目的：研究神经生长因子(NGF 2.5S)对不同浓度的醋酸铅神经毒性拮抗效应，观察细胞分化以及细胞形态的影响，同时进行了醋酸铅的毒性试验和细胞分化的比较。

With addition of benzene and under certain current density and temperature, the indirect organic electrosynthesis using lead tetraacetate as media could be carried out in one compartment and no lead metal was deposited on the counter electrode.

在该醋酸电解液中加入一定量的苯，控制一定的电流密度、温度等条件可以阻化铅在对电极上的析出，实现了无隔膜电解槽中四醋酸铅的电解生成，并应用于间接有机电合成。

The results show that under the follow conditions: pyrolysis temperature 270癈,active carbon and: ethyne black=9:l, carbon pretreated with HNOs, 7.18% Mn(NO3)2(vs. carbon support) catalyst can exhibit the best performance. In order to improve the electrocatalystic performance of MnO2, Pb(CH3COO)2 , La(NO3)3-6H2O and Ce(NO3)3-6H2O are chosen as additives of MnCVC air electrode . Electrochemical performance of the electrodes is studied by current-potential polarization curves.

为了提高催化剂的性能，选择了醋酸铅、稀土作为添加剂，采用稳态极化和交流阻抗测试方法，结果表明：铅的氧化物、稀土La和Ce可作为MnO_2催化剂的助剂来促进氧气还原反应的进行，醋酸铅添加7.5％时极化最小，在一般金属-空气电池的工作电流密度20～50mA／cm~(-2)下，电位比单独MnO_2催化剂可提升30～50mV。

And the morphologies of lead tungstate crystal were different when different surfactants of polygycol 200 and cetyltrimethyl ammonium bromide were added in the experiments.

以钨酸钠和醋酸铅为原料，分别加以表面活性剂聚乙二醇200和十六烷基三甲苯溴化铵，用沉淀法合成出钨酸铅纳米晶和菱形微晶。

We killed some mice at the day 6th , the others were continue to expose to formaldehyde and observe their estrous cycle. HE staining was used to study the pathological changes happened in ovarian tissue. Uranium acetate and lead acetate double staining was used to study the ultrastructure of oocyte. E2 and LH level in blood serum was measured by radioimrnunoassay reagent kit.

第6d处死一批小鼠，用HE染色观察小鼠卵巢组织的病理改变，用醋酸铀—醋酸铅双重染色电镜下观察小鼠卵母细胞超微结构的损伤；用GSH测定试剂盒测定小鼠卵巢组织中的GSH含量；用E_2和LH放射免疫分析试剂盒分别测定小鼠血清中E_2及LH水平；采用超排卵法，计数超排卵数并收集卵母细胞，于油镜下观察生殖细胞遗传物质的损伤。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了