The effects of heat treatments on the properties and microstructures of extruded Mg-Nd-Zr alloy have been studied.The results show that the rare earth-containing phase in the extruded Mg-Nd-Zr alloy is Mg12Nd phase.Af...The effects of heat treatments on the properties and microstructures of extruded Mg-Nd-Zr alloy have been studied.The results show that the rare earth-containing phase in the extruded Mg-Nd-Zr alloy is Mg12Nd phase.After ageing treatment,plenty of Mg12Nd phase particles precipitated,and the tensile strength and proof strength increased.After quenching and ageing treatments,the grains coarsened,and the proof strength decreased significantly.Both the ageing and the ageing followed quenching decrease the plasticity of the alloy.展开更多
合成了Keggin结构钨硅、钨锗、钨磷、钨砷两电子及四电子稀土钐盐杂多蓝，铈量滴定及元素分析方法确定了化合物的还原电子数及化学组成，采用 IR，UV－Vis，183 W NMR和ESR等对其结构进行了表征．在人T淋巴细胞 MT－4内，对合成的化合...合成了Keggin结构钨硅、钨锗、钨磷、钨砷两电子及四电子稀土钐盐杂多蓝，铈量滴定及元素分析方法确定了化合物的还原电子数及化学组成，采用 IR，UV－Vis，183 W NMR和ESR等对其结构进行了表征．在人T淋巴细胞 MT－4内，对合成的化合物进行了系统的抗艾滋病毒（HIV-1）活性及毒性测定．发现Keggin结构钨硅、钨锗四电子稀土钐盐杂多蓝具有较强的抗HIV-1活性，其中钨锗酸钐四电子杂多蓝（代号HPBR－2）具有较高的治疗指数．展开更多
Three rare-earth-containing heteropolyoxometalates with different sizes, Na9[Eu(W5 O18)2], K13[Eu(SiW11O39)2], and K17[Eu(P2W17O61)2], have been incorporated by self-assembly into the interlayer of synthetic multibila...Three rare-earth-containing heteropolyoxometalates with different sizes, Na9[Eu(W5 O18)2], K13[Eu(SiW11O39)2], and K17[Eu(P2W17O61)2], have been incorporated by self-assembly into the interlayer of synthetic multibilayer films of dimethyldioctadecylammonium chloride and exhibited different orientations.展开更多
文摘The effects of heat treatments on the properties and microstructures of extruded Mg-Nd-Zr alloy have been studied.The results show that the rare earth-containing phase in the extruded Mg-Nd-Zr alloy is Mg12Nd phase.After ageing treatment,plenty of Mg12Nd phase particles precipitated,and the tensile strength and proof strength increased.After quenching and ageing treatments,the grains coarsened,and the proof strength decreased significantly.Both the ageing and the ageing followed quenching decrease the plasticity of the alloy.
文摘合成了Keggin结构钨硅、钨锗、钨磷、钨砷两电子及四电子稀土钐盐杂多蓝，铈量滴定及元素分析方法确定了化合物的还原电子数及化学组成，采用 IR，UV－Vis，183 W NMR和ESR等对其结构进行了表征．在人T淋巴细胞 MT－4内，对合成的化合物进行了系统的抗艾滋病毒（HIV-1）活性及毒性测定．发现Keggin结构钨硅、钨锗四电子稀土钐盐杂多蓝具有较强的抗HIV-1活性，其中钨锗酸钐四电子杂多蓝（代号HPBR－2）具有较高的治疗指数．
基金supported by the National Nature Science Foundation of China(20071007)the Foundation for University Key Teacher by the Ministry of Education of China
文摘Three rare-earth-containing heteropolyoxometalates with different sizes, Na9[Eu(W5 O18)2], K13[Eu(SiW11O39)2], and K17[Eu(P2W17O61)2], have been incorporated by self-assembly into the interlayer of synthetic multibilayer films of dimethyldioctadecylammonium chloride and exhibited different orientations.
