非连通图(K1∨(P(1)n∪ P(2)n)) ∪ P(3)n及(K1∨(P(1)n∪ P(2)n)) ∪ P(3)n∪ St(n)的优美性

 给出了非连通图(K₁∨(P⁽¹⁾_n∪ P⁽²⁾_n)) ∪ P⁽³⁾_n和(K₁∨(P⁽¹⁾_n∪ P⁽²⁾_n)) ∪ P⁽³⁾_n∪ St(n),且对其优美性进行了研究。证明了如下结论：设 n 为任意正整数,则当n≥4时,非连通图 (K₁∨(P⁽¹⁾_n∪ P⁽²⁾_n)) ∪ P⁽³⁾_n和(K₁∨(P⁽¹⁾_n∪ P⁽²⁾_n)) ∪ P⁽³⁾_n∪ St(n)均是优美图;其中,Pn 是 n 个顶点的路,Kn 是n个顶点的完全图, St(n) 是 n+1 个顶点的星形树,G₁ ∨ G₂ 是图 G1 与 G2 的联图。     

基于4,4′-(2,5-二(甲硫基)-1,4-亚苯基)二吡啶的锌配合物:合成、晶体结构及荧光传感性能

采用水热法,用4,4′-(2,5-二(甲硫基)-1,4-亚苯基)二吡啶(L)和4,4′-二苯醚二甲酸(H₂OBA)与Zn(NO₃)₂·6H₂O,生成了一个三维配合物{}n(1)。X-单晶射线分析表明,配合物是为单斜晶系,C2/c空间群,分子量M_r=650.09,a=2.526 5(2) nm,b=1.462 3 (1) nm,c=1.715 9(1) nm,β=97.37(2)°,V=6.286 9(3) nm³,Z=4,D_c=1.458 g/cm³,F(000)=2 832,S=1.157,R₁=0.078 5,wR₂=0.194 6 (I>2σ(I))。配合物1中,Zn与配体L和质子化的4,4′-二苯醚二甲酸分别形成了一维链,而两条一维链相互来链接形成三维结构。另外对配合物热稳定性和荧光进行了测试。有趣的是,水中少量的Fe³⁺可以猝灭配合物1的荧光,证明配合物1对检测废水中的Fe³⁺具有潜在的应用价值。     

茜素黄R-γ-环糊精包合物与鲱鱼精DNA的作用机制

  在生理pH=7.4环境下,用摩尔比法测定γ-环糊精(γ-CD)与茜素黄R(AYR)的包合比(摩尔比)n_γ-CD ∶n_AYR =1∶1,确定包合常数K^Θ_f ,_288.15K=1.69×10⁵ L/mol。以吖啶橙(AO)作为分子探针,用紫外光谱法、荧光光谱法、化学热力学法和黏度法等研究包合物γ-CD-AYR与鲱鱼精DNA(hsDNA)的作用,得到γ-CD-AYR包合物与hsDNA作用的结合比n_DNA ∶n_γ-CD-AYR=1∶2,结合常数为K _288.15K=3.10×10⁴ L/mol,K _310.15K =4.02×10⁴ L/mol。热力学函数Δ_rH_m^Θ=8.78×10³ J/mol,Δ_rG_m^Θ=-2.59×10⁴ J/mol, Δ_rS_m^Θ=116.45 J/(mol·K) ,说明γ-CD-AYR包合物与DNA作用为熵驱动。确定γ-CD-AYR与hsDNA的作用方式为静电和部分嵌插的作用方式。     

非连通图(P3∨Km)∪G及(C3∨Km)∪G的优美性

 将k--优美图的概念进行了推广,引入A～B优美图的概念,并以此为基础,得到了非连通图 (P₃∨K_m)∪G及(C₃∨K_m)∪G是优美图的一个充分条件。证明了对任意正整数k,m,n,t,当k≤n≤t,n+k－1≤m时,图 (P₃∨K_m)∪(^k∪_j=1 K_n,t) 和 (C₃∨K_m)∪(^k∪_j=1 K_n,t)是优美图;当k=1,2,2≤n<2m+1时,图(P₃∨K_m)∪^k∪_j=1 P_n, (C₃∨K_m)∪^k∪_j=1 P_n 和 (P₃∨K_m)∪ P_n∪St(t)是优美图;当2≤n≤2m+1时,(P₃∨K_m)∪ P_n∪St(t) 是优美图。本文的结果推广了现有的一些结论。     

一种含5-硝基间苯二甲酸和菲咯啉配体的超分子化合物：结构表征，光致发光和电化学性能

采用水热法合成了含混合配体的铜配合物[CuClPhen]⁺·[HL]^-·2H₂O（HL=5-硝基间苯二甲酸,Phen=1,10-菲咯啉）,其结构由单晶X射线晶体学确定。标题化合物在三斜空间群P-1的晶体化合物。标题化合物的晶体数据：C₃₂H₂₄ClN₅CuO₈,M_r = 704.54,a = 10.4044(5),b = 12.3912(9),c = 12.4632(9)Å,α = 73.859(6),β = 85.036(5),γ = 78.202(5)^°,V = 1510.09(17) ų,Z = 2, T = 293(2) K,D_c = 1.549 g/cm³,μ(MoKα) = 0.874 mm^-1,F(000) = 720.0,R = 0.0554,wR = 0.1434,GOF = 1.098。当用作超级电容器电极材料时,所制备的配合物具有高比电容、良好的循环稳定性和优良的倍率性能。在1mol/L KOH溶液中,最大比电容可达到69 F/g。在2 A/g电流密度下,10000次循环后比电容保持率为72%。标题化合物是一种潜在的红色光致发光材料。     

两类非连通图(P2∨Kn)（0，0,r1,0,…,0,rn)∪St(m)及(P2∨Kn)（r1+a,r2,0,…,0)∪Gr的优美性

 对自然数n, m, i∈N,设K_i表示i个顶点的完全图,K_n表示K_n的补图,St(m) 表示m+1个顶点的星形树,G_r为有r条边的优美图,P_n为n个节点的路,P₂∨K_n是P₂与K_n联图。 给出了非连通图(P₂∨K_n)（0,0,r₁,0,…,0,r_n)∪St(m)和(P₂∨K_n)（r₁+a,r₂,0,…,0)∪G_r的定义,并论证了当n≥2时,这两类图都是优美图。     

函数导数分担1个公共值的惟一性

将函数F=fⁿ(f-1)f′和G=gⁿ(g-1)g′分担一个CM公共值的一个惟一性定理推广到F和G满足E_k)(a,F)=E_k)(a,G)的情况,k=2,3.     

半群OI(n,r)k的秩和相关秩

设自然数n≥3,OI_n^k是有限链[n]上的双边k型-保序严格部分一一变换半群.对任意的1≤k≤n-1,0≤r≤n-1,记OI_（n,r）^k={α∈OI_n^k：|im（α）|≤r}为半群OI_n^k的双边理想.通过对秩为r的元素和格林关系的分析,分别获得了半群OOI_（n,r）^k的极小生成集和秩.进一步确定了当0≤l≤r时,半群OI_（n,r）^k关于其理想OI_（n,l）^k的相关秩.     

4,4'-二(1-咪唑基)苯硫醚构筑的钴配合物:合成、晶体结构及对有机染料降解性能研究

采用水热法,用4,4′-二(1-咪唑基)苯硫醚(BIDPT)和均苯三甲酸(H_3btc)与Co(NO₃)₂·6H₂O反应,合成了一个基于三核钴单元的一维链配合物{[Co₃(BIDPT)₄(btc)₂(H₂O)₂]·H₂O}n(1)。X单晶射线分析表明,配合物是为单斜晶系,Pc空间群,分子质量M_r=4 264.21(8),a=1.019 3(3) nm,b=1.783 0(5) nm,c=2.364 6(6) nm,β=102.45°,V=4.196 2(2) nm³,Z=2,D_c= 2.300 g/cm³,F(000)=2 814,S=1.042,R₁=0.056 0,wR₂=0.184 2 (I >2σ(I))。配合物1中,质子化的均苯三甲酸链接Co(1)和Co(3)形成了两条一维链。而这两条一维链与Co(2)和BIDPT构成的“8”字构型相连,形成了另外一条一维链。配合物中存在C－H…π堆积作用使一维链连接形成二维超分子结构。另外对配合物红外、元素分析、热稳定性以进行了测试。研究了配合物1对藏红T的催化降解性能,在氙灯照射和H₂O₂存在的条件下,配合物1对藏红T具有较好的光催化降解作用。     

关于一类高阶齐次线性微分方程解的增长性

 研究了高阶线性齐次微分方程
f ^(k)+A_k－1(z)P_k－1(e ^z)f ^′ +…+A₁(z)P₁(e^z)f ^′ +A₀(z)P₀(e^z)f=0
解的增长性,其中A_j(z)≠0(j=0,1,…,k－1)是整函数,P_j(e^z)(j=0,1,…,k－1)是e^z的非常数多项式,它们的常数项都为零,且次数不相等。证明了该微分方程的每一个非零解有无穷级。     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

正~~     

An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.