13.5～14.8 MeV能区中子引起的~(203)Tl(n，2n)~(202)Tl反应截面的测量

用活化法以^93Nb（n，2n）^92mNb反应截面作为中子注量的标准测量了13．5—14．8MeV中子引起的^203Tl（n，2n）^202Tl的反应截面值．14MeV中子由T（d，n）^4He反应得到，中子能量通过^93Nb（n，2n）^92mNb和^90Zr（n，2n）^89m＋9Zr截面比法测定．测得了分别由（13．5±0．3），（14．1±0．2），（14．8±0．3）MeV中子引起的^230Tl（n，2n）^202Tl反应截面值分别为（1829±83），（1884±109），（2016±105）mb．并与其他人的测量结果和JEFF-3．1评价数据库进行了比较．     

弹目相对方位的图像与陀螺组合测量方法

针对现有修正弹药中弹目相对方位探测精度较低的不足,该文结合图像敏感器（CCD）和微机电陀螺（MEMS）的特点,设计了利用CCD与MEMS陀螺组合测量弹目相对方位的方法。该方法以弹丸姿态运动方程为基础,根据弹丸全弹道下CCD的成像轨迹和MEMS陀螺测得的弹丸姿态角,计算得到了弹目相对方位参数。计算机仿真和转台试验结果表明,该方法能够较准确地测量弹丸与目标的相对方位,精度可达±0．4°。     

大环稀土-过渡金属超分子配合物[Tb（NiL）3（CH3OH）3]（ClO4）3·5CH2OH的合成及晶体结构

合成了以大环草酰胺配合物NiL为配体的四核Ni3Tb稀土-过渡配合物[Tb（NiL）2（CH3OH）3]（ClO4）3·5CH3OH,并利用单晶X-射线结构分析、红外光谱以及电子光谱等多种手段对该配合物进行了结构表征．结构分析表明，该配合物为三斜晶系，对称群为P=1，a=1．5081（3）nm，b=1．5132（3）nm，c=1．7446（3）nm，α=82．512（11）°，β=70．095（6）°，γ=84．185（10）°，Z=2．     

光唇鱼精子的活力观察

通过测定精子的激活率、运动时间及寿命,研究了几种因子对光唇鱼精子活力的影响。结果表明,光唇鱼精子激活与运动的适宜pH为6.5～8.0;pH 7.0时,精子激活率达（93.33±2.89）%、运动时间达（30.33±1.53）s。精子在0.4%g/L NaCl溶液中的激活率达（93.67±1.15）%,运动时间及寿命分别达（36.00±1.00）s及（44.67±1.53）s。精子在0.7%g/L KCl溶液中的激活率、运动时间及寿命分别达（93.33±2.89）%、（55.33±1.53）s及（65.33±2.31）s。精子在（0.1～1.0）%g/L的葡萄糖溶液和CaCl2溶液中均不能激活。精子在室温28～30℃下存放3 h后活力明显下降,在低温4℃下存放5 h后活力与鲜精相比无显著差异。CF-HBSS液及1.0%g/L NaCl溶液可作为精子保存用稀释液。     

一维链状结构的Co（Ⅱ）聚合物：[Co（BDC）（phen）（H2O）]n·3nH2O的晶体结构和水热合成

在水热条件下合成了金属-有机配位聚合物：[Co（BDc）（phen）-（H2O）n·3nH2O（BDC=1,4-bemenedicarboxylate,phen=1,10-phenanthroline）,并通过元素分析,IR光谱,TG和单晶X-射线衍射对其进行了表征。结构表明该化合物属于三斜晶系：P-1（2）空间群组;晶胞参数a=9．795（5）^°A,b=10．752（5）^°A,c=11．271（5）^°A,α=75．903（5）°,β=65．306（5）°,γ=86．042（5）°,V=1045．3（9）^°A3,C20H22CoN2O8,Mr=477．13,De=1．908g·cm^-3,μ（MoKa）=1．637mm^-1,Z=2,RI=0．1586,wR2=0．3906。该化合物表现出Z字连状结构。     

[Zn(2,2'-bipy)3]2 Cl4·11 H2O的合成和晶体结构

在亚甲基双膦酸四异丙基酯[（iPrO）2P（O）CH2P（O）（iPrO）2]（=L）的催化作用下,合成一种新的配合物[Zn（2,2′-bipy）3]2Cl4·11H2O,并用红外光谱和X-ray单晶衍射进行了测试与表征.在反应中L并未参加配位,但却起到了催化、诱导的作用.该配合物属于单斜晶系,C2/c空间群,Mr=1407.82,a=1.3630（3）nm,b=2.2232（4）nm,c=2.3569（4）nm,α=90°,β=106.488°,γ=90°,V=6848（2）nm3,Z=4.     

二氯二吡嗪根合铜(Ⅱ)配合物的合成和晶体结构

本文首次用吡嗪二甲酸为起始原料与二水氯化铜反应,合成了以吡嗪根为配体的单核铜（Ⅱ）配合物.对该配合物进行了元素分析表征,并对其进行了X-射线单晶结构测定.该单晶属于单斜晶系,空间群为P2（1）/c,其晶胞参数为a=3.8607（8）、α=90°,b=8.5731（17）、β=92.00（3）°,c=16.997（3）、γ=90°,V=562.2（2）3.在该配合物中每个吡嗪根提供一个氮原子配位于Cu（Ⅱ）离子而形成一平面,而两个氯原子分别配位于该四方形平面的上下方,形成矩形.     

血管性血友病因子、D-二聚体与新生儿缺氧缺血脑病的临床研究

探讨新生儿缺氧缺血脑病（HIE）血浆中血管性血友病因子（vWF）及D-二聚体（DD）的变化规律,观察HIE患儿血管内皮损伤情况,对凝血功能的影响及临床意义。检测60例HIE患儿（轻、中、重度各20例）血浆中vWF及DD值,并与20例正常新生儿脐带血进行比较。按临床分度标准将HIE患儿分为轻、中、重三组。轻度组DD及vWF平均值分别为：（0.0591±0.0078）mg/L,（50.78±6.06）%,与正常对照组平均值（0.0378±0.0070）mg/L,（33.57±6.15）%比较,DD值无差异（P〉0.05）,vWF值有不同（P〈0.01）;中度组DD及vWF平均值分别为：（0.1857±0.1183）mg/L,（94.58±5.67）%,与正常对照组平均值比较均增高显著（P〈0.01）;重度组DD及vWF平均值分别为：（0.9264±0.0633）mg/L,（228.35±38.27）%,与正常对照组比较均增高显著（P〈0.01）;轻、中、重度三者差异有显著性意义（P〈0.01）,并且两两间差异也有显著性意义（P〈0.01）。vWF与DD间具有直线相关性（r=0.960,P〈0.01）。轻度HIE患儿血管内皮已有损伤,但凝血功能尚正常;中、重度HIE患儿存在血管内皮细胞损伤及凝血功能异常,反映血液高凝状态,其异常程度与病情轻重有关。     

Na3H3[C4FN3OH4]6[TeMo6O24]·8H2O和Na2H[C4FN3OH4]2[Al（OH）6Mo6O18]·13H2O的合成与晶体结构

采用常规方法合成了2个Anderson型多金属氧酸盐Na3H3[C4FN3OH4]6[TeMo6O24]·8H2O（Ⅰ）和Na2H[C4FN3OH4]2[Al（OH）6Mo6O18]·13H2O（Ⅱ）．通过元素分析、红外光谱、热重分析、X射线单晶衍射对其进行了表征．结果表明：2个化合物均属于三斜晶系,P-1空间群;化合物Ⅰ的晶胞参数a=1．10691（10）nm,b=1．14899（10）nm,c=1．35807（12）nm,a=71．63（2）°,β=66．25（10）°,γ=67．44（2）°,V=1．4334（2）nm^3,Z=1,R1=0．0748,wR2=0．1279;化合物Ⅱ的晶胞参数a=0．68788（4）nm,b=1．16845（7）nm,C=1．30690（8）nm,a=81．3390（10）°,β=77．8900（10）°,γ=79．5480（10）°,V=1．00307（10）nm^3,Z=1,R1=0．0314,wR2=0．0995．     

两种Cr(Ⅲ)配合物的合成、结构和光物理性质

采用溶剂热合成方法,得到了2种Cr（Ⅲ）配合物：Cr（oxinate）3·CH3CH2OH（1）和Cr（oxinate）3·CH3OH（2）．对2种化合物的单晶体进行X-射线衍射分析,确定了分子结构和晶体结构．2种化合物均为单斜晶系,P2（1）／n空间群．晶胞参数分别为：a=1．1255nm,b=1．3281nm,c=1．6783nm,α=90°,β=94．479°,γ=90°,V=2．5011nm^3,Z=4,F=1．052,R=0．0511（1）;a=1．0912nm,b=1．3136nm,c=1．6847nm,α=90°,β=97．73°,γ=90°,V=2．3930nm^3,Z=4,F=1．098,R=0．0467（2）．结构解析表明,2种化合物均存在着分子内氢键．对2种化合物的UV—VIS-NIR和荧光光谱进行了测定、分析指认和对比．     

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.     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

正~~