Study on Tissue Culture and Effective Clone Establishment of Hemistepta lyrata Bunge

[Objective] The research aimed to study the rapid propagation technology and establish effective clone of Hemistepta lyrata Bunge. [Method] With tender stem of Hemistepta lyrata Bunge as material, the conditions needed in calluses induction and differentiation, adventitious bud differentiation and radication, test tube seedling cutting and transplantation were studied. [ Result] The results showed that the optimum medium for granulated calluses induction from tender stem was MS ＋ BA 0.3 mg/L ＋2,4-D 1 -1.5 mg/L, for granulated calluses and adventitious bud differentiation was MS ＋ AgNO31.5 mg/L ＋ BA 0.4 mg/L ＋ NAA 0.1 mg/L. 1/2 MS ＋ IAA 0.6 mg/L was suitable for test tube seedling rooting and regeneration, and cinder was used as transplantation and cutting substrate. [ Conclusion]This study will provide the scientific reference for choosing the feasible medium in tissue culture of Hemistepta lyrata Bunge.

新一代助洗剂SMAS-2型晶态层状结构二硅酸钠的机理性能研究(摘要)

阐述了新型助洗剂SMAS -2的物化性能与特征 ,室温快速软化水与碱性缓冲能力、去污力、抗再沉积能力等功能特点 ,还具有水玻璃的功能 ,是粉状洗涤剂中功能好 ,不污染环境 ,价格低廉的新一代助洗剂。

如何选用金属清洗剂

目前汽车零件的清洗,常使用煤油、柴油,有些精密零件则使用无铅汽油。这样做,不仅耗费燃油,影响工作人员的身体健康,而且还有着火的危险。 近年来,新型的工业洗涤材料——金属清洗剂已逐渐发展起来。它代替汽油、煤油及柴油用于清洗零件,并能克服上述缺点。