Bone marrow mesenchymal stem cells differentiated into hepatocyte - like cells induced by rebirth liver tissue lixivium of mouse in vitro 肝细胞生长因子基因修饰骨髓间充质干细胞对四氯化碳所致慢性肝损伤的治疗作用
2.
Ammonifiers in suzhou creek can not use inorganic nitrogen and carbamide as nitrogen source ; additional carbon source and garbage lixivium have little influence on ammonifiers growth ; high content of salt and low temperature restrain ammonifiers growth ; alkalescent condition has little influence on ammonifiers , but acidic condition restrain ammonifiers growth ; the biomass of ammonifiers are not necessary correlated with the function of ammonifiers , adding glucose with 1g / l content into the water sample obviously promote the growth and function of ammonifiers . physiological groups of bacteria play significant role in the translation and 苏州河的氨化菌无法利用无机氮和尿素作为氮源；在营养条件充足时添加额外c源和富含有机物的垃圾浸出液对氨化菌的生长基本无影响；高盐度和低温抑制氨化菌生长；碱性条件对氨化菌的生长影响不大，酸性条件对氨化菌生长具有抑制作用；氨化菌生物量的消长与转氨活性之间不存在必然联系， 1g / l的葡萄糖对苏州河水样中氨化菌的数量和转氨功能具有明显的促进作用。
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The killing effect on oncomelania hupensis by lixivium of pterocarya stenoptera , nerium indicum , rumex japonicus and their mixture was studied . differences of the snails mortality were studied also . the three kinds of plant material could kill the snail effectively both in spring and in autumn . but the mortality was different when the experiment is done in different seasons or with different lixivium . the effect in spring was better than that in autumn . n . indicum was the most effective among the three kinds . the effect by mixture was better than that by unitary material , and the effect by the mixture of the three kinds was better than that by two kinds . the variance analyses showed that the experiment could be modified , and some ingredients concentration in mixed lixivium could be reduced . the experiment was valuable in enhancing the power of killing the snail and saving plant material 对枫杨、夹竹桃和土大黄以及它们的组合水浸液的灭螺效果作了比较研究,结果表明: ( 1 )灭螺效果均随水浸液浓度的增高而增强; ( 2 )这3种植物材料及其组合水浸液的灭螺效果都是春季比秋季好; ( 3 )组合水浸液的灭螺效果比单一植物材料水浸液的灭螺效果好; ( 4 )方差分析的结果说明植物材料组合水浸液灭螺在保证灭螺效果的前提下,还可以适当降低组合水浸液中的浓度.以上结论对提高植物材料的灭螺效率和节省植物材料的使用量有着重要的意义,同时也为组建植物灭螺群落提供了有益的参考
