点态Fuzzy算子群第三同构定理

本文证明了下述结果:1.令 H_1和 H_2是点态 M—Fuzzy 群 A 的 M—子群,H′_1和H′_2分别是 H_1和 H_2的 M—Fuzzy 正规子群,并且 H_1(e)=H_2(e)=H′_1(e)=H′_2(e),则(H_1∩H_2)H′_1/(H_1∩H′_2)H′_1和 H_1∩H_2/(H_1∩H′_2)H′_1∩(H_1∩H_2)是 M—同构的。2.令 H_1和 H_2是 M—点态 Fuzzy 群 A 的 M—子群,H′_1,H′_2分别是 H_1和 H_2的M—Fuzzy 正规子群,并且 H_1(e)=H_2(e)=H′_2(e)=H′_1(e),则(H_1∩H_2)H′_1/(H_1∩H′_2)H′_1与(H_1∩H_2)H′_2/(H′_1∩H_2)H′_2是 M—同构的。     

含硫(氮)二茂铁衍生物的合成与表征

正戊醛、异戊醛、对氯苯甲醛、胡椒醛、环已酮与二茂铁在浓H_2SO_4(-10℃)中缩合,产物用碳酸氢钠水溶液水解,水解产物在F_3CCO_2H催化下发生巯基化反应,合成了五种含硫二茂铁衍生物,(C_5H_5)Fe(C_5H_4CR′R~2SCH_2CO_2H)(I,R′=H,R~2=n-C_4H_9;Ⅱ,R′=H,R~2=i-C_4H_9;Ⅲ,R′=H,R~2=C_6H_4Cl-4;Ⅳ,R′=H,R~2=C_6H_3O_2CH_2-3.4;V,R′R~2=-(CH_2)-_5);再由Ⅲ和V与氨和羟胺反应,合成两种含氮二茂铁化合物,(C_5H_5)Fe(C_5H_4CH(NH_2)(C_6H_4Cl-4))(Ⅵ)和(C_5H_5)Fe(C_5H_4C(NH)H)(CH_2)_5)(Ⅶ)。     

八毫米圆波导H_(02)模变换器研制成功

圆波导H_(02)模变换器可将迥旋脉塞输出的H_(02)模功率,转换成矩形波导H_(10)功率或圆波导的更低次模的功率;同时,它也可作为产生H_(02)波的源,来测试迥旋脉冲H_(02)腔体和窗口等的微波结构;此外,在毫米波雷达、热核反应的二次加热等方面也有其应用.圆波导H_(02)模变换器包括H_(02)→H_(01)的变换器和H_(02)(?)H_(01)(?)H_(10)的变换器两大类     

含桥联配体的双核铁羰基簇合物的合成和结构研究

Fe_3(CO)_(12)与亚磷酸三硫代苯酯P(SC_6H_5)_3在温和条件下反应给出三个具有桥联原子的双核铁羰基簇合物(μ-SC_6H_5)_2Fe_2(CO)_5,(μ-SC_6H_5)(μ-P(SC_6H_5)_2)Fe_2(CO)_5和(μ-SC_6H_5)(μ-P(SC_6H_5)_2))Fe_2(CO)_5(P(SC_6H_5)_3).本文对这三个簇合物进行了IR,~1HNMR和MS谱的表征工作,并用z-ray衍射技术测定了它们的单晶结构.     

自反和超自反子空间的一些性质

本文给出了一些方法如何构造一些自反和超自反的子空间,讨论了它们的一些性质。在本文中,H表示复数域C上的Hilbert空间,所有投影均指正交投影。定义1 φ为L(H_1,H_2)的范数闭子空间,若T∈L(H_1,H_2),满足x∈H_1,Tx∈∈〔φx〕有T∈φ,则称φ为自反的。. 定义2 φ为L(H_1,H_2)的范数闭子空间,称φ为超自反的,如果存在常数K满足T∈∈L(H_1,H_2), d(T,φ)≤ksup{‖P~1TQ‖:P、Q分别为H_2和H_1中的投影并且P~1φQ=0}。满足上式的最小常数k记为k(φ)。引理1 若φ为L(H_1,H_2)中范数闭的子空间,则T∈L(H_1,H_2),sup{d(Tx,φx):     

添加氢气对异辛烷燃烧的化学作用机理研究

为了辨析氢气(H_2)的化学作用对异辛烷(iC_8H_(18))燃烧主要产物和中间产物的影响,该文对添加氢气的异辛烷层流预混火焰进行化学反应动力学分析。结果表明,随着H_2添加量的增大,一氧化碳(CO)、二氧化碳(CO_2)和甲醛(CH_2O)等主要产物,H、O、OH自由基以及甲醛中间产物的摩尔分数减少。H_2的化学作用促进上述产物的生成,而H_2的热作用和稀释作用使这些产物的浓度降低并占主导地位。H_2的化学作用对乙炔(C_2H_2)的抑制作用随着H_2添加量的增大呈非线性变化。     

苯磺酸镍配合物的结构及催化性能研究

以C_6H_5SO_3H和NiCO_3·2Ni(OH)_2为原料,采用挥发法,在室温下合成了配合物[Ni(H_2O)_6](C_6H_5SO_3)_2,通过红外光谱、X-射线单晶衍射和热重测定了[Ni(H_2O)_6](C_6H_5SO_3)_2晶体空间结构和热稳定性.测试结果表明,[Ni(H_2O)_6](C_6H_5SO_3)_2配合物属于单斜晶系,P2(1)/n空间群,a=6.9646(9)?,b=6.2868(9)?,c=22.324(3)?,α=90°,β=93.917(2)°,γ=90°,V=975.2(2)?~3,Z=2,含有6个结晶水,且中心离子(Ni~(2+))并未与磺酸基发生直接配位.通过Biginelli反应为探针,考察了[Ni(H_2O)_6](C_6H_5SO_3)_2配合物的催化性能.     

一种新型的催化反应及其机理

通过对金属冠醚[Fe_6~Ⅲ(C_(12)H_9N_2O_5)_6(H_2O)_2(CH_3OH)_4]和[Fe_6(C_(12)H_8N_2O_5Cl)_6(H_2O)_4(CH_3OH)_2]反应体系的分析,认为水杨酸基双酰肼羧酸的酯化是一种新型的由金属冠醚自身进行的内部酯化反应,并将这种酯化反应定义为内部自催化反应.对于18-MC-6金属冠醚[Fe_6(C_(12)H_9N_2O_5)_6(H_2O)_2(CH_3OH)_4],在其内部自催化反应中,反应物为[Fe_6(C_(10)H_6N_2O_3-COOH)_6(H_2O)_2(CH_3OH)_4],其中主要配体(Z)-H_4shcpa具有羧酸基团(—COOH).作为酯化反应的功能基团—COOH,通过与铁离子的配位,再与具有活性的配位甲醇结合,生成酯化合物(Z)—H_3mshcp,最终得到内部自催化反应产物[Fe_6~Ⅲ(C_(10)H_6N_2O_3—COOCH_3)_6(H_2O)_2(CH_3OH)_4].其中,内部自催化反应的催化中心应是铁离子.     

Fe_3O_4-[(ZnL_2)(H_2O)_2]_2H_2[P_2Mo_5O_(23)]·2H_2O纳米复合粒子的合成及性质

以Fe_3O_4与[(ZnL_2)(H_2O)_2]_2H_2[P_2Mo_5O_(23)]·2H_2O(L=pyridine-2-carboxamide)为原料成功合成了Fe_3O_4-[(ZnL_2)(H_2O)_2]_2H_2[P_2Mo_5O_(23)]·2H_2O纳米复合粒子.通过透射电子显微镜(TEM)、X-射线衍射仪(XRD)、紫外可见分光光度计(UV-Vis)、傅立叶变换红外光谱仪(FT-IR)、荧光光谱仪(PL)和振动样品磁强计(VSM)对Fe_3O_4-[(ZnL_2)(H_2O)_2]_2H_2[P_2Mo_5O_(23)]·2H_2O纳米复合粒子进行结构和性质研究,结果表明合成的Fe_3O_4-[(ZnL_2)(H_2O)_2]_2H_2[P_2Mo_5O_(23)]·2H_2O纳米复合粒子平均粒径为10.4nm,几乎呈球形,大小较为均匀,室温下显示良好的光学和磁学性能,在黑暗条件下,Fe_3O_4-[(ZnL_2)(H_2O)_2]_2H_2[P_2Mo_5O_(23)]·2H_2O纳米复合粒子能有效吸附有色染料次甲基蓝,该纳米复合粒子在吸附,磁学和生物医学方面都具有潜在应用.     

Keggin型钨硅酸-镍-联咪唑的合成及电催化性能

依据自组装原理,分别采用常规水溶液和水热合成方法,以缺位程度不同的钨硅酸盐为前驱体,合成了2例含有饱和Keggin结构阴离子[SiW_(12)O_(40)]~(4-)和Ni(Ⅱ)-H_2biim/H_2O(H_2biim=2,2′-联咪唑)配阳离子的无机-有机杂化化合物[Ni(H_2biim)_2(H_2O)_2]_2[SiW_(12)O_(40)]·5H_2O(化合物1)和[Ni(H_2biim)2(H_2O)_2]_2[SiW_(12)O_(40)]·6H_2O·2CH_3COOH(化合物2),并通过X射线单晶衍射(SCXRD)、元素分析、红外光谱(IR)、粉末X射线衍射(PXRD)及热重(TG)分析对2例化合物进行了表征.SCXRD结果分析表明,2例化合物具有相同的阴离子结构,其结晶水个数和配阳离子中2个H_2biim配体间形成的夹角不同,且化合物2的外围有CH_3COOH分子存在.研究了2例化合物在水溶液中的电化学性质及其电催化还原H_2O_2和NaNO_2的性能.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with