镍冶炼废水处理方法

在镍冶炼过程中产生大量的废水，其中含有镍、铜、钴等金属离子．这种冶炼废水在排放前必须加以处理，以便回收有价金属元素和防止污染环境．作者采用中和－混凝法处理镍冶炼废水，并对方法进行了热力学分析，对混凝机理进行了研究．理论计算结果表明：Ni2＋，CU2＋，Co2＋开始沉淀的pH值分别为7．47，6．00和7．68；若沉淀到1mg／L以下时，所控制的pH值分别为8．48，7．01和8．70．通过实验获得的最佳条件为：pH＝9．0，聚合硫酸铁用量为镍含量的2倍，聚丙烯酰胺用量为4mg／L；处理后，废水中ρNi＜0．13mg／L，ρCo＜0．01mg／L，ρCu＜0．005mg／L．     

三种保鲜剂对延缓须苞石竹切花衰老的影响

对须苞石竹切花瓶插期三种不同保鲜剂效果进行了对比实验，以蒸馏水为对照，测定了花瓣衰老过程中的含水量、总糖量和可溶性蛋白含量，结果显示，保鲜剂处理的其含量均有明显增加，尤其以自制配方Ⅱ(3％S 250mg/L8—HQ 500mg／L苯甲酸钠 25mg/LAgNO3 25mg/L EDTA-Na2)和Ⅰ号(4％S 500mg／L CA 200mg／L8—HQ 0．02％CaCl3 0．02％KCl)的效果最好，可延缓切花衰老6天--8天。     

反相高效液相色谱法同时测定4种苯二氮Chuo类药物

提出了一种反相高效液相色谱法同时测定4种苯二氮Chuo类药物的分析方法。考察了4种苯二氮Chuo类药物的保留值与流动相组成、流速、pH及柱温等色谱条件的关系，优化了色谱条件．确定了以ODS Hypersil为色谱柱，甲醇-水(5l：49；V／V，用氨水调pH7．8)为流动相，流速为0．8mL／min，柱温为45℃，检测波长为220nm的最佳色谱条件,甲苯作为内标物，以内标法峰面积定量,硝西泮，地西泮，三唑仑和艾司唑仑线性范围分别是0．1mg／L～320mg／L，0．2mg／L～320mg／L，0．1mg／L～320mg／L和0．08mg／L～320mg／L．检测限分别为0．1mg／L，0．2mg／L，0．1mg／L和0．08mg／L,该方法用于尿液中的苯二氮革类药物的测定,其回收率为97．0％～108．7％，标准偏差为1．7％～3．0％(n=7),该方法简单、快速、精确、灵敏、重复性好。     

大孔径毛细管气相色谱法快速测定饮料中的普鲁卡因

采用固相萃取技术，以二十二烷为内标，FID检测器检测，建立了一种测定饮料中普鲁卡因的大孔径毛细管气相色谱方法，测定结果表明普鲁卡因检测的线性范围为ρ(普鲁卡因)=0．04mg／L～64mg／L，其最低检测质量浓度为0．04mg／L，相对标准偏差为2．6％，平均回收率为85．6％。     

黄河上游多卡寺段地表水质评价

通过对黄河上游多卡寺段地表水质量的调查与监测，得出监测结果：pH8．22，溶解氧（DO）7．5mg／L，悬浮物199．2mg／L，化学需氧量（COD）12mg／L，氯化物114．1mg／L，硫酸盐247．8mg／L，总硬度126．6mg／L，矿化度427．9mg／L，钙镁总量67．4mg／L，锌0．03mg／L。结果表明：黄河上游多卡寺段水体水质均未超过于《地面水环境质量标准》（GB3838-2002）的一级水标准，水体未受到污染，水质良好。     

凡纳滨对虾养殖早期水体中氮磷营养盐变化规律研究

为探讨凡纳滨对虾养殖早期水体中主要营养盐含量及其变化,测定了对虾池水体中的氨氮、硝酸盐、亚硝酸和磷酸盐。结果显示,氨氮浓度变化范围：0．3-0．02mg／L,硝酸盐浓度变化范围：0．29-8．68mg／L,亚硝酸盐浓度变化范围：0．15-8．50mg/L,磷酸盐浓度变化范围：004-1．10mg／L。在养殖早期水体中,氨氮浓度呈波动变化,硝酸盐、亚硝酸盐和磷酸盐含量相对稳定。     

催化电解氧化与SBR法联合处理垃圾渗滤液的实验研究

采用催化电解氧化与SBR联合工艺对垃圾渗滤液的处理进行了实验研究．催化电解氧化的最佳操作奈件为：电流密度5A／dm^2；ρcl-5000ms／L；ρSnCl2 50mg／L；极板间距0．5cm；单位体积的垃圾渗滤液所使用的极板面积500cm^2／L；电极材料采用PbO2-IrO2-TiO2／Tj（三元电极SPR）．SBR法处理催化电解氧化出水较理想的操作条件为：溶解氧2-4mg／L；曝气时间5h；沉淀30min；温度20-30℃；pH值6．5-8．0．出水各项指标的去除率分别为COD达到90％以上，NH3-N达到99％，TN达到95％以上，色度达到99％，重金属离子含量低于0．001mg／L．     

皮革废渣渗漏液中铬的测定

对皮革废渣(蓝皮屑)渗漏液中铬的二苯碳酰二肼分光光度测定法进行了研究，结果表明此方法的线性范围0-0.400mg／L，吸光度A对浓度c(mg／L)关系回归方程为：A=0．779c-0．0005，线性相关系数为0．9993，检出限为0．007mg／L，相对标准偏差小于3％，加标回收率为100％～105％，用此法对废渣渗漏液中铬的测定表明铬的形态为三价铬，因此，测定总铬时需先加H2SO4-HNO3进行消解，再以KMnO4氧化，二苯碳酰二肼显色，分光光度法测定．     

茜素红S与蛋白质作用的光散射光谱及其分析应用

研究了茜素红S作为光散射探针测定蛋白质的分析方法．在pH=4．0的Britton-Robinson缓冲溶液中。茜素红S与蛋白质结合后有强烈的光散射作用，在λ=353nm处，光散射强度最大，且光散射强度与蛋白质浓度成正比．由此建立了测定蛋白质含量的分析方法．方法灵敏度高，检测限达0．01mg／L，线性范围为0．02～6mg／L．方法适用于人血清蛋白含量的测定．     

耐盐能源植物海滨锦葵(Kostelezkya virginica)再生体系的建立

对海滨锦葵组织培养再生体系进行了研究，结果表明：1．海滨锦葵茎段外植体较好的愈伤组织诱导培养基组合为MS＋KT1．5mg／L＋IAA2．0mg／L或MS＋6-BA4．0mg／L＋IBA0．2mg／L＋Inositol50mg／L．2．海滨锦葵愈伤诱导不定芽的较好培养基组合为MS＋NAA2．0mg／L＋2iP5．0mg／L和MS＋NAA0．5mg／L＋2iP5．0mg／L．3．海滨锦葵腋芽分化不定芽的较好培养基组合为改良MS（含2倍有机营养）＋KT0．4mg／L＋IAA1．0mg／L．MS基本培养基中适当提高有机营养的含量对腋芽的增殖有促进作用，实验中以有机营养的含量为基本培养基2倍时效果较好．4．不定芽在1／ZMS的培养基中附加IBA1．0mg／L牛根最好．     

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