呼和浩特市和林格尔地区沙棘生化成分分析

对呼和浩特市和林格尔地区沙生植物沙棘中所含的常量元素、微量元素和17种氨基酸进行测定．结果表明，沙棘中的常量元素Ca、K、Na、Al、Mg在植株各部分中的含量顺序相同，皆为Ca〉K〉Na〉AE〉Mg；Fe、Mn、Cu、Zn4种植物所必需的微量元素含量顺序存在差异，表现为根：Fe〉Mn〉Cu〉Zn，主干：Fe〉Cu〉Mn〉Zn，侧枝：Fe〉Mn〉Cu〉Zn；沙棘中人体必需的7种氨基酸含量均较高．含量顺序为侧枝〉根〉主干．     

野生毛樱桃生长期矿质营养含量变化与果实生长的关系

研究了野生毛樱桃生长期果实生长与叶果中7种矿质营养元素(Cu,Zn,Fe,Mn．Ca,Mg,K)的含量变化及其相关关系。结果表明,果实中Cu,Zn,Fe,Mn,Ca,Mg元素含量与果实生长呈负相关,其中Zn,Mg元素达显著水平;叶片中Cu,Zn,Fe,Mn,K元素含量与果实生长呈负相关,其中K元素达显著水平．叶片中Ca,Mg元素与果实生长呈正相关,其中Ca元素达显著水平。果实中各营养元素(除K外)生长期变化相互间均达极显著正相关。叶片中Ca与Mg元素呈极显著正相关;Zn,K均与Ca,Mg元素呈极显著负相关;Cu与Ca元素呈显著负相关;K与Zn,Cu元素呈显著正相关;Zn与Cu,Mn元素均呈显著正相关。叶片和果实中矿质营养元素间相关性均不显著。     

ICP—AES法测胡萝卜叶中微量元素的含量

用高压罐硝化样品，以正交试验处理样品，利用ICP—AES法测定胡萝卜叶及胡萝h中Mn、K、Mg、Zn、Fe、Ca、Cu、P、Ge共9种微量元素的含量．采用该方法的回收率在96．00％～103．50％之间，相对标准偏差小于1．81％．ICP--AES法具有快捷、简单、准确度高等特点，且同时测定多种元素，更适合胡萝卜叶及胡萝卜中金属与非金属元素的测定．实验证明，胡萝卜叶中含有Mn、K、Mg、Zn．Fe、Ca、Cu、P、Ge等大量对人体有益的微量元素，说明胡萝卜叶跟胡萝卜一样是一种营养价值很高且开发前景广阔的绿色蔬菜．     

毛樱桃叶片中矿质营养元素含量的周年动态变化

研究了野生毛樱桃叶片中7种矿质营养元素(Cu,Zn,Fe,Mn,Ca,Mg,K)9个生长时期的周年动态变化及其相关性。结果表明,Zn,Fe,Cu元素周年动态变化各异;Ca与Mg,Mn与K之间变化趋势大体一致;Zn,Fe二元素分别与Ca,Mg之间达显著或极显著负相关;Ca与Mg之间、Mn与K之间均达到极显著正相关。野生毛樱桃叶片中7种矿质营养元素按含量高低排序为:Ca>K>Mg>Fe>Mn>Zn>Cu,用于叶分析营养诊断标准的适宜时期为5月16～5月23日。     

大熊猫乳汁与牛、羊、人乳汁及人工乳中无机元素含量的比较研究

研究了正常大熊猫、牛、羊、人、人工乳等乳汁中Ca、P、K、Na、Fe、Cu、Mn、Zn、Mg、Co等10种无机元素．结果表明：大熊猫乳汁中的Ca、P、Zn、Mg等元素的含量低于成都麻羊，高于牛、人、人工乳的含量。大熊猫乳汁中元素K、Na、Fe、Mn、Co的含量均高于成都麻羊、牛、人、人工乳的含量。     

贵州钩藤不同产地钧、茎微量元素比较分析

为了解贵州不同产地钩藤不同部位主要微量元素的含量,采用电感耦合等离子体质谱仪(ICP-MS),对采自贵州剑河、都匀钩藤样品进行钩、茎微量元素(Na、Mg、K、Ca、Mn、Fe、Co、Zn、Cu、Mo)含量测定分析。结果表明:剑河钩藤钩、茎中Na、Mg、K、Ca、Fe、Zn、Cu、Mo含量均高于都匀钩藤钩、茎中含量。Zn/Cu比大小顺序均为茎钩和茎钩,都匀钩藤钩、茎、钩和茎中Zn/Cu比均高于剑河钩藤对应部位的Zn/Cu比。不同产区钩藤间Mn和Mg,Mn和Ca、Fe和K、Zn和Mg、Zn和Ca、Cu和Na、Cu和Na、Mo和Fe(p0.05)显著正相关,K和Na、Ca和Mg、Cu和K、Cu和Fe(p0.01)极显著正相关。     

内蒙古地区三种沙生木本植物中金属元素含量的测定与分析

采用ICP—AEs法对内蒙古地区的红柳、沙枣和沙柳3种沙生木本植物中的金属元素进行测定和分析．该方法具有良好的准确度和精密度，加标回收率为95．1%-110．3％，RSD〈3.4％,结果表明，常量元素Na、K、Mg、Ca、Al及植物生命活动所必需的微量元素Cu,Fe、Mn、Zn在3种沙生木本植物中的含量顺序不同’且Cu,Fe、Mn、Zn4种元素的含量均低于其他陆生高等植物的平均含量。     

日光温室甜樱桃叶片中矿质营养元素含量的动态变化

以红灯(Prunus L.)品种为试材,研究了温室栽培樱桃叶片中7种矿质营养元素(Cu,Zn,Fe,Mn,Ca,Mg,K)含量的动态变化及其相关性.结果表明:开花期至果实成熟期,樱桃叶片中Cu,Zn含量显著下降;Fe,Mn,Ca,Mg,K含量显著增加.果实采后生长发育阶段,Fe元素含量极显著下降且略有回升,其他6种元素变化平缓(或增加或下降).Cu与Mn,Zn元素分别呈极显著负相关和正相关;Ca与Mn和Cu,Zn元素分别呈极显著正相关和负相关;K,Mg元素与Cu元素呈显著和极显著负相关,与Mn,Fe,Ca,Mg元素呈显著或极显著正相关.     

不同密度马尾松林针叶养分含量及其转移特征

以贵州龙里林场12年生马尾松人工林为研究对象,分析了3种密度马尾松针叶凋落前后N、P 、K、Ca、Mg、Fe、Mn、Zn、Cu等9种养分含量及其转移特征。结果表明：叶片凋落前Ca含量随林分 密度增大而提高,其他元素含量未表现出有规律的变化;叶片凋落后Mn含量表现出随林分密度增大 而增大的趋势,其他元素含量在不同密度间差异不大;叶片凋落前后N、P、K、Mg发生了不同程度 的转移,Ca、Fe、Mn、Zn、Cu未发生转移或发生负转移;N、P、K、Mn、Zn、Cu转移率随林分密度 增大变化趋势不明显,Fe转移率随林分密度增大有所降低,Ca和Mg转移率随林分密度增大有所提高 。     

不同地区菠菜微量元素的调查与研究

本文调查了吉林、山东、辽宁、河北四个省份的菠菜中微量元素Cu、Zn、Pb、K、Ca、Fe、Mn的含量状况,尤其着重研究了菠菜中重金属Cu、Zn、Pb的污染状况。调查结果显示,重金属Pb的含量最高,污染最严重。四个省份中,菠菜受Pb的污染比较严重的是吉林省;本实验所研究的菠菜受Cu的污染相对较轻,未受到Zn的污染。从综合污染指数来看,菠菜遭受重金属污染程度由重到轻依次为:吉林、河北、山东、辽宁。对于微量元素K、Ca、Fe、Mn,研究结果表明,菠菜中Fe和Ca的含量相对较高,K和Mn的含量相对较低。     

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