用熔盐法合成了新型硅酸铀K6(UO2)3Si8O22,并用单晶X射线衍射确定结构.结果表明,化合物由UO6双四角椎及硅酸根四面体构成的(Si8O22)12-单元组成,其中(Si8O22)12-单元的结构形态是最新发现的.29 Si MAS NMR测定结果与晶体结构相吻合,而...用熔盐法合成了新型硅酸铀K6(UO2)3Si8O22,并用单晶X射线衍射确定结构.结果表明,化合物由UO6双四角椎及硅酸根四面体构成的(Si8O22)12-单元组成,其中(Si8O22)12-单元的结构形态是最新发现的.29 Si MAS NMR测定结果与晶体结构相吻合,而光致发光光谱证实了六价铀的存在.K6(UO2)3 Si8 O22空间群为C2/m(No.12),a=1.24092(9)nm,b=1.45678(8)nm,c=0.81199(5)nm,β=103.992(4)°,V=1.4240(1)nm3,Z=2,R1=0.0329,wR2=0.0796.展开更多
The paper has proposed the design concept of "solid waterscape". It considers that in waterscape design, it should select a design style suitable for local climate, traditional culture and folk customs; resp...The paper has proposed the design concept of "solid waterscape". It considers that in waterscape design, it should select a design style suitable for local climate, traditional culture and folk customs; respect the nature and be close to nature; and approach the life and fit in with the reality. In terms of flowing water and solid water, it should make a reasonable and comprehensive design in terms of time, space and pattern, develop new landscape factors, and enrich winter landscape; set indoor waterscape; and enrich color design. By taking waterscape design of the residential area "Riverbank House" for example, it has stressed the solid character of water to highlight snow and ice culture and northeastern style, so as to create a natural and vivid snowy and icy landscape. Snow and ice have been the lead of winter landscape. Finally, waterscape can provide two different patterns of beauty throughout the year.展开更多
文摘用熔盐法合成了新型硅酸铀K6(UO2)3Si8O22,并用单晶X射线衍射确定结构.结果表明,化合物由UO6双四角椎及硅酸根四面体构成的(Si8O22)12-单元组成,其中(Si8O22)12-单元的结构形态是最新发现的.29 Si MAS NMR测定结果与晶体结构相吻合,而光致发光光谱证实了六价铀的存在.K6(UO2)3 Si8 O22空间群为C2/m(No.12),a=1.24092(9)nm,b=1.45678(8)nm,c=0.81199(5)nm,β=103.992(4)°,V=1.4240(1)nm3,Z=2,R1=0.0329,wR2=0.0796.
文摘The paper has proposed the design concept of "solid waterscape". It considers that in waterscape design, it should select a design style suitable for local climate, traditional culture and folk customs; respect the nature and be close to nature; and approach the life and fit in with the reality. In terms of flowing water and solid water, it should make a reasonable and comprehensive design in terms of time, space and pattern, develop new landscape factors, and enrich winter landscape; set indoor waterscape; and enrich color design. By taking waterscape design of the residential area "Riverbank House" for example, it has stressed the solid character of water to highlight snow and ice culture and northeastern style, so as to create a natural and vivid snowy and icy landscape. Snow and ice have been the lead of winter landscape. Finally, waterscape can provide two different patterns of beauty throughout the year.
