多重圈张量乘积的联结数

本文给出了多重圈张量乘积的联结数的计算公式,并给出了证明。     

渤海辽东湾海冰条件的概率分析

本文利用辽东湾海域及其沿岸台站多年的海冰观测资料和有关气象资料,对该海域的海冰条件以及相应的气候规律进行了概率分析、研究了辽东湾南北两个分区的划分、冰厚与气温的关系、冰厚的极值概率分布、太阳黑子数以及El Nino现象对渤海冰情的影响及其长期变化的规律,得到一些可供辽东湾抗冰平台设计参考的数据和结论。     

ON THE GENERALIZED GLAISHER－HONG‘S CONGRUENCES

51. Notations and IntroductionListed below are some general notations which wi1l be used thIoughout this note:pea prime number greater than 3,cl l, mt r, s E N,(:) = n!/(kl(n -- k)!)--the binomial coefficient,Bk--the kth Bernoulli number in the "even suthe" notation, e.g., Bo = 1, B1 =--1/2, B2 = 1/6, B3 = 0,',B.(x) = Z (:)Bkx"--*--the Bernoulli polynomial.k=0As is known, the Bernoulli numbers are defined by the symbolic recurrence relationB.+l = (B + 1)"+', n = 1, 2,', Bo = l, whic…     

模糊数值测度的Radon-Nikodym定理

本文证明了模糊数值测度的Radon-Nikodym定理,从而使文[1]中的Radon-Nikodym定理成为本文定理的特例.     

n-方体的点可区别全色数的渐近性态

令Qn为n-方体,图G的点可区别全色数为χvt(G),那么limn→∞vχt(Qn)n=1 q*.这里q*=0.293815…是方程(x 1)x 1=2xx的唯一的正根.     

图的顶点个数与完美对集及色数间的关系和应用

本文从另一角度一顶点个数来研究完美对集及图的色数之间的关系及应用，通过对特殊图形；偶图，完全图的研究，最终推导出一般情况下图的顶点个数与完美对集及色数问的关系及一些实际问题的应用。     

Δ(G)=9且不含4-圈的平面图的全色数

用Δ(G)表示图G的顶点最大度.对平面图,当Δ(G)≥11时,已证明Vizing和Behzad的图的全色数猜想(TCC)是正确的.运用Discharge方法证明了最大度为9且不含4-圈的平面图的全色数等于10.     

双外平面图的边面染色

双外平面图是一个平面图，它可以嵌入到平面上并使得它的顶点出现在两个面的边界上．证明了对于最大度至少是6的双外平面图，有Xef(G)≤△(G) 1，其中△(G)是G的最大度．     

高产旱稻新品种“GS郑旱2号”

该品种是常规粳型早稻新品种，已通过国家农作物品种审定委员会审定。该品种产量水平高，综合农艺性状优良，生育期120天，高91．6cm，穗长20cm，平均每穗总粒数86粒，千粒重30．4g，糙米率81．8％，整精米率62．8％．直链淀粉含量15％，胶稠度90mm，抗胡麻叶斑病，抗穗茎瘟病，适应性广，适于黄淮海地区(豫、鲁西南、秦岭以南，晋南，皖中北，苏北等地)的早稻区种植。     

Synthesis of a new meso／microporous composite molecular sieve of MCM-41／mordenite

An MCM-41/mordenite composite with twofold porous structure and stepwise-distributed acidity was prepared for the first time by using zeolite mordenite as the silica-alumina source. The composite molecular sieve has been investigated and compared with a mechanical mixture of mordenite and MCM-41 for their structure, acidity and catalytic activity by means of XRD, N2 adsorption and desorption, HRTEM, DTG, NH3-TPD and catalytic reaction. The characterization results show that the structure and property of the composite molecular sieve are quite different from those of the mechanical mixture, which might be ascribed to the incorporation of secondary building units characteristic of zeolite mordenite into the mesoporous walls of the composite which gives rise to the thicker mesoporous walls, the higher hydrothermal stability and more strong acid sites. Furthermore, the new strategy could be used as a new general method for the preparation of catalysts for the reaction system with multifold large molecules, and the results were well confirmed by the dealkylation of C10^ aromatic hydrocarbon.