q-Kampé de Fériet函数的简化和求和公式

利用著名的Jackson变换和Heine变换公式建立了几个一般形式的双变量q-级数变换公式。经过参数特殊化,推导出一系列关于q-Kampé de Fériet函数的简化与求和公式。     

含参DC复合优化问题值函数的Fréchet次微分

利用次微分相关性质，并引入新的约束规范条件，对含参DC复合优化问题的值函数的Fréchet次微分进行了估计.     

超图的[r,s,t]-着色

将一般图的[r,s,t]-着色推广到超图上得到超图的[r,s,t]-着色的定义及超图[r,s,t]-着色的一些性质和定理,并讨论了超图的[r,s,t]-色数的上下界。     

半B-（p，r）-预不变凸函数与非线性规划问题

定义了一类重要的非凸函数——半-B-(p,r)-预不变凸函数,它是半预不变凸函数的真推广.首先用例子说明了此类函数的存在性,并说明它是B-不变凸函数、半预不变凸函数和B-(p,r)-预不变凸函数的推广;然后,讨论了半-B-(p,r)-预不变凸函数的基本性质与集合刻画,并给出了半-B-(p,r)-预不变凸规划问题的非可微最优性条件,其结论具有一般性,推广了涉及不变凸函数、半预不变凸函数和B-(p,r)-预不变凸函数的一些结论.     

Catalytic Characteristics of Lyases in Gloeobacter violaceus PCC 7421

In Gloeobacter violaceus PCC 7421, three possible lyase genes glr1191, glr1182 and gll1188 were selected by Blast sorting. The coded proteins of these three genes were co-expressed with their substrate protein in E. coli, respectively, and some chromoproteins were obtained. The fluorescence spectra showed that high fluorescence intensity was observed in the three experimental groups that involved the lyase genes, but little fluorescence intensity was observed in negative control groups. The ratio of relative fluorescence intensity in the experimental group with glr1191 was 64.8%. The result of SDS-PAGE indicated that the molecular weights of the three chromoproteins were 22.0 10 3 , 23.6 10 3 and 22.1 10 3 , respectively. The result of zinc-induced fluorescence re- vealed that the phycobilin in the three chromoproteins was covalently coupled to their apo-proteins. The result also showed that the coded proteins of these three genes (CpeS1 , CpeT1 , CpeY )could cata- lyze the covalent coupling of different phycobilins to their apo- proteins and formed active chromoproteins.     

Bernstein-Bézier算子的点态逼近阶的估计

对有界可测函数f的Bernste in-Bézier算子B(nα)(f,x)的点态逼近阶进行估计.在Zeng等[1~2]关于B(nα)(f,x)的点态逼近阶研究的基础上,对其所给的估计结果做进一步的改进,得到更精确且一致有界的系数估计.     

二元混合物中的热传导方程Phragmén-Lindelöf二择性

考虑定义在一个半无穷柱体上二元混合物中的热传导方程,其中柱体的母线平行于坐标轴。假设方程在柱体的侧面上满足非齐次Neumann边界条件,在柱体的有限端满足非线性条件,运用能量估计的方法,得到了方程的Phragmén-Lindelöf二择性结果。在衰减的情形下,为了使结果有意义,建立全能量的上界。     

关于Hermite-Fejér插值算子逼近度的渐近表示

设H_n(f,x)是以Jacobi多项式J_n(x)的零点为基点的Hermite-Fejér插值算子,本文得到了H_n(f,x)的逼近度的渐近表示。     

射频溅射法研制YBa_2Cu_3O_y高T_c超导薄膜

本文采用射频溅射法研制YBa_2Cu_3O_7高T_c超导薄膜,研究了溅射电压、气流、气压、基片及热处理工艺对超导膜成分、相结构及超导性能的影响,所得到的超导薄膜T_c(R=0)=89K,临界电流密度10~4～10~5A·cm~(-2).