新结构磷酸锌的合成与表征

在对苯二胺存在的条件下,通过水热方法得到了具有新结构的磷酸,相同条件下也得到了该材料的单晶体,并通过单晶X射线衍射解析其结构.新结构的磷酸锌属单斜晶系,P21空间群,结构组成为Zn3(H2O)(PO4)2,晶胞参数M=404.07,a=0.8747(3)nm,b=0.4890(7)nm,c=1.6731(2)nm,β=95.639(2)°,V=0.7122(7)nm3,Z=4,Dc=3.768 g/cm3.通过共用顶点连接的PO4四面体和ZnO6、ZnO5(H2O)六面体结构单元形成了Zn3(H2O)(PO4)2的三维开放骨架,而整个结构也可以看作是有三元环、四元环和八元环共同构成的.     

A NUMERICAL MODEL OF FLOW FIELD AND WATER QUALITY FOR TIDAL REGIONS BASED ON TRIANGULAR MESHES

1 .　ＩＮＴＲＯＤＵＣＴＩＯＮＵｐｔｏｎｏｗ ,ｔｈｅｒｅｐｏｒｔｓｆｏｒｓｏｌｖｉｎｇ 2Ｄｄｅｐｔｈ ｉｎｔｅｇｒａｔｅｄｅｑｕａｔｉｏｎｓｏｆｆｌｏｗａｎｄｍａｓｓｔｒａｎｓｐｏｒｔｉｎｔｉｄａｌｒｅｇｉｏｎｈａｖｅｂｅｅｎｉｎｔｒｏｄｕｃｅｄｉｎｌａｒｇｅｎｕｍ ｂｅｒｓ .ＦｒｏｍｔｈｅｂｅｇｉｎｎｉｎｇｏｆＹａｎｅｎｋｏ[1] .ＴｈｅＦｉ ｎｉｔｅＤｉｆｆｅｒｅｎｃｅＭｅｔｈｏｄ (ＦＤＭ )ｈａｓｂｅｅｎｗｉｄｅｌｙａｐｐｌｉｅｄｂｙＦａｌｃｏｎｅｒ[2 ] ,ＶｉｎｃｅｎｚＣａｓｕｌｌｉ[3,5] ,ＨｅＳｈ…     

RESEARCH ON HYDRODYNAMIC AND WATER QUALITY MODEL FOR TIDAL RIVER NETWORKS

1 .　ＩＮＴＲＯＤＵＣＴＩＯＮＰｌａｉｎｒｉｖｅｒｎｅｔｗｏｒｋａｒｅａｉｓａｌｗａｙｓｔｈｅｒｅｇｉｏｎｗｉｔｈｌｏｗｅｒｔｏｐｏｇｒａｐｈｙ ,ｈｉｇｈｄｅｖｅｌｏｐｅｄｃｉｔｉｅｓａｎｄｌａｒｇｅｑｕａｎｔｉｔｙｏｆｐｏｐｕｌａｔｉｏｎ ,ｉｎｃｌｕｄｉｎｇｓｏｍａｎｙｌａｋｅｓ,ｒｉｖｅｒｎｅｔｗｏｒｋｓ.Ｔｈｉｓｋｉｎｄｏｆａｒｅａｉｓｓｔｒｏｎｇｌｙｉｎｆｌｕ ｅｎｃｅｄｂｙｔｉｄａｌ,ａｎｄｆｌｏｏｄｏｃｃｕｒｓｆｒｅｑｕｅｎｔｌｙ .Ｈｙｄｒｏｄｙ ｎａｍｉｃｓｉｔｕａｔｉｏｎｏｆｔｉｄａｌ…     

A Theoretical Method for Estimating Performance of Reed-Solomon Codes Concatenated with Orthogonal Space-Time Block Codes

1　ＩｎｔｒｏｄｕｃｔｉｏｎＲｅｃｅｎｔｌｙ,ａｎｅｗｓｐａｃｅ ｔｉｍｅｃｏｄｅａｄａｐｔｅｄｔｏｍｕｌｔｉｐｌｅａｎｔｅｎｎａｓｗｉｒｅｌｅｓｓｆａｄｉｎｇｃｈａｎｎｅｌｈａｓｂｅｅｎｐｒｏｐｏｓｅｄ[1～6] .Ｔｈｅｃｏｄｅｓａｒｅｔｈｅｊｏｉｎｔｄｅｓｉｇｎｏｆｃｏｄｉｎｇ ,ｍｏｄｕｌａｔｉｏｎ ,ｔｒａｎｓｍｉｓｓｉｏｎａｎｄｒｅｃｅｐｔｉｏｎｄｉ ｖｅｒｓｉｔｙｔｏ ｐｒｏｖｉｄｅｔｈｅｂｅｓｔｔｒａｄｅｏｆｆｂｅｔｗｅｅｎｄａｔａｒａｔｅｓ,ｄｉｖｅｒｓｉｔｙａｄｖａｎｔａｇｅａｎｄｃｏｄｅｓ…     

E-Commerce-Objected E-Stamp Systems

1　ＩｎｔｒｏｄｕｃｔｉｏｎＷｉｔｈｔｈｅｇｌｏｂａｌｉｚａｔｉｏｎｏｆｉｎｆｏｒｍａｔｉｏｎａｎｄｅｃｏｎ ｏｍｙｏｖｅｒｌｏｗ ｃｏｓｔＩｎｔｅｒｎｅｔ,ｍｏｒｅａｎｄｍｏｒｅｐｅｏｐｌｅｇｒｅａｔｌｙｄｅｐｅｎｄｏｎｉｎｆｏｒｍａｔｉｏｎｎｅｔｗｏｒｋｓ,ｏｆｗｈｉｃｈｅ ｃｏｍｍｅｒｃｅｉｓａｎｏｂｖｉｏｕｓｅｘａｍｐｌｅ[1～ 2 ] .Ｂｕｔｕｐｔｏｎｏｗ ,ｎｅｗｓａｔｈｏｍｅａｎｄａｂｒｏａｄｓｔｒｏｎｇｌｙｉｎｄｉｃａｔｅｓａｆａｃｔｔｈａｔｌｏｇｉｓｔｉｃｓｈａｓｂｅｅｎａｂｏｔｔｌｅｎｅｃ…     

Theoretical Calculation on Optimum Si—doping Content in Boron Carbide Thin Film

The theoretical expression of the relationship between optimum doping content and crystal structure is presented as well as the preparation methods.By using this expression,the optimum doping content of silicon-doped boron carbied thin film is calculated.The quantative calculation value is consistent with the experimental results. This theoretical expression is laso appropriate to resolve the optimum doping content for other electric materials.     

DRDECMP—TBP／煤油萃取性能的研究：Ⅱ.对锕系—镧系元素？…

研究并测定了ＤＲＤＥＣＭＰ－ＴＢＰ／煤油对Ａｍ＾３＋、Ｇｄ＾３＋、ＵＯ＾２＋２的萃取分配比。研究结果表明,分配比随ＤＲＤＥＣＭＰ浓度或水相中ＨＮＯ３浓度的增大而增大,随水相中Ｇｄ＾３＋浓度的增大或温度的升高而降低;当有机相中ＴＢＰ浓度增大时,Ａｍ＾３＋、Ｇｄ＾３＋的分配比略有下降,ＵＯ＾２＋２的分配比略有升高;酸度低时,Ａｍ＾３＋和Ｇｄ＾３＋的分配比低,可实现低酸反萃取;而低酸下ＵＯ＾２＋２的分配     

Grey GM(1,1) Model with Function-Transfer Method for Wear Trend Prediction and its Application

1　ＩｎｔｒｏｄｕｃｔｉｏｎＯｉｌｓｕｐｅｒｖｉｓｉｏｎｔｅｃｈｎｏｌｏｇｙ ,ｗｈｉｃｈｗａｓｄｉｒｅｃｔｅｄｉｎｔｈｅｓｙｓｔｅｍｉｃｃｏｎｃｅｐｔｏｆｔｒｉｂｏｌｏｇｙａｎｄｗｈｏｓｅｍａｉｎｍｅａｎｓｗａｓｔｏｃｈｅｃｋｏｉｌｐｒｏｐｅｒｔｙａｎｄａｎａｌｙｚｅａｂｒａｓｉｏｎｇｒａｉｎｓ ,ｗａｓｅｘｔｅｎｓｉｖｅｌｙａｐｐｌｉｅｄｉｎｗｏｒｋｉｎｇｓｕｐｅｒｖｉｓｉｏｎａｎｄｆａｕｌｔａｎａｌｙｓｉｓｏｆｔｈｅｅｑｕｉｐｍｅｎｔｏｐｅｒａｔｅｄｉｎｗｏｒｋｉｎｇｖａｒｉａｔｉｏｎ ,ｌｏｗ…     

Fuzzy Design Method of Product Quality Robustness

1　ＩｎｔｒｏｄｕｃｔｉｏｎＴｗｏｐｕｒｐｏｓｅｓｏｆｒｏｂｕｓｔｎｅｓｓｄｅｓｉｇｎｏｎｐｒｏｄｕｃｔｑｕａｌｉｔｙｗｅｒｅ[1,2 ] :ｏｎｅｗａｓｔｏｍａｋｅｔｈｅｓｔａｔｉｓｔｉｃｓａｖｅｒａｇｅｖａｌｕｅｏｆｃｈａｒａｃｔｅｒｉｓｔｉｃｐａｒａｍｅｔｅｒｙｏｎｐｒｏｄｕｃｔｑｕａｌｉｔｙａｐｐｒｏａｃｈｔｈｅｔａｒｇｅｔｖａｌｕｅｙｏｔｏｔｈｅｂｅｓｔｏｆｉｔｓａｂｉｌｉｔｉｅｓ,ｎａｍｅｌｙ ,ｌｅｔδｙ=|ｙ- - ｙ0 |→ｍｉｎ ;ｔｈｅｏｔｈｅｒｗａｓｔｏｌｅｔｔｈｅｆｌｕｃｔｕａｔｉｏｎｏｆｉ…     

Improved Nonlinear Equation Method for Numerical Prediction of Jominy EndQuench Curves

Without considering the effects of alloying interaction on the Jominy endquench curves, the prediction results obtained by YU Baihai′s nonlinear equation method for multialloying steels were different from those experimental ones reported in literature. Some alloying elements have marked influence on Jominy endquench curves of steels. An improved mathematical model for simulating the Jominy endquench curves is proposed by introducing a parameter named alloying interactions equivalent (Le). With the improved model, the Jominy endquench curves of steels so obtained agree very well with the experimental ones.