对氨基苯甲酸生产废水的树脂吸附预处理

采用超高交联吸附树脂处理芳香两性化合物对氨基苯甲酸（PABA）生产废水，通过静态吸附、动态吸附-脱附实验，研究确定了最佳的吸附-脱附工艺条件。结果表明，在常温和2BV／h的吸附流量条件下，原废水不用调节pH值，直接经JX-101树脂吸附处理20BV后，CODn可AK6000mg／L左右降至700mg／L左右，CODCr去除率达88％以上，PABA的吸附去除率达99％以上。采用1 BV8％氨水溶液＋1 BV4％氨水溶液＋2BV水作脱附剂，在313K脱附温度和1BV／h脱附流量的条件下，树脂脱附性能良好。该工艺简亘，运行稳定，操作简便，可回收有用物质，有望实现工业化。     

浅谈小型火电厂氨法脱硫技术的应用

1氨法脱硫技术应用简介 氨法工艺以氨水为吸收剂．副产硫酸铵化肥。锅炉排出的烟气经烟气换热器冷却至90～100℃，进入预洗涤器经洗涤后除去HCI和HF．洗涤后的烟气经过液滴分离器除去水滴进入前置洗涤器中。在前置洗涤器中．氨水自塔顶喷淋洗涤烟气，烟气中的SO2被洗涤吸收除去．经洗涤的烟气排出后经液滴分离器除去携带的水滴，进入脱硫洗涤器．在该洗涤器中炯气进一步被洗涤．经洗涤塔顶的除雾器除去雾滴．进入脱硫洗涤器。再经烟气换热器加热后经烟囱排放。     

响应面Box-Behnken设计优化超声波辅助法提取甘草总黄酮的工艺研究

以甘草为原料,碱性乙醇溶液为提取剂,采用超声波辅助法提取甘草总黄酮。在单因素试验的基础上,以乙醇浓度、氨水浓度、液固比、超声温度及超声时间为响应变量,甘草总黄酮提取率为响应值,利用Box-Benhnken设计进行响应面分析,确定甘草总黄酮的最佳提取工艺条件。结果表明,甘草总黄酮的最佳提取工艺为：液固比11,氨水体积分数1.0％,乙醇体积分数66％,超声时间20min,超声温度74℃。在该条件下,甘草总黄酮提取率为2.15％。     

VAE乳胶复合非织造布/软木纸材料的工艺性能研究

以非织造布、软木纸和醋酸乙烯／乙烯共聚物（VAE）乳胶为原料，采用正交设计方法分析涂胶量、加热温度、加热时间、滚压压力和滚压次数对非织造布／软木纸复合材料剥离强度、弯曲强度和拉伸强度的影响．通过数理统计分析，得出了非织造布／软木纸复合材料的成型最佳工艺．     

中频加热大口径钢管弯管过程的有限元模拟

运用弹塑性大变形有限元理论，在通用有限元软件MARC平台上建立了大口径热推钢管弯曲过程的弹塑性热应力混合模型，并对实际弯曲过程进行加载计算。基于有限元模拟结果，文章对钢管弯曲过程中的金属变形规律作了详细分析，同时也给出了断面形状及壁厚在成形过程的变化情况。文中利用MARC软件良好、开放的二次开发特性，通过用户子程序解决了热推钢管弯曲过程中局部中频加热的难题。模拟结果可为实际生产确定合理工艺提供理论性的指导。     

导热油蒸氨工艺的应用

<正>焦化厂炼焦产生的氨水含有氨、酚、硫化物、氰化物、吡啶和焦油等有毒有害物质,如不能有效回收或去除,对于后续废水的生化处理影响较大,影响废水的合格排放。蒸氨就是利用蒸馏原理将剩余氨水中的氨蒸出。传统的蒸氨工艺是利用蒸汽为热源,直接进入蒸氨塔进行蒸氨,不仅消耗大量蒸汽,蒸汽冷凝水也进入蒸氨废水中,增加了废水处理的负荷及成本。重庆市重钢股份有限公司新区焦化厂一期工程4×60孔焦炉于2010年投入试运行,与之配套的氨水处理采用了导热油炉加热导热油间接进行蒸氨的工艺,设计处理氨水量为80m3/h。采用导热油蒸氨工     

电脉冲加热Fe_（78）B_（13）Si_9非晶合金的力性及磁性

采用大电流交流脉冲快速加热Ｆｅ７８Ｂ１３Ｓｉ９非晶合金条带，研究了脉冲加热工艺参数对加热速率、应力释放率、退火脆化和软磁性能的影响规律．结果表明，脉冲电流加热时，加热速率比常规退火高３～４个数量级，内应力释放率可达８５％，退火脆化受到抑制．和淬态相比，矫顽力Ｈｅ降低仅为其１／４，饱和磁感Ｂ．提高３０％以上，软激性能得到明显改善．     

汽车曲轴圆角强化对残余应力和弯曲疲劳极限的影响

对ＬＲ６１００发动机曲轴采用圆角感应淬火工艺进行表面强化。研究了其对曲轴淬硬层，残余应力分布规律和弯曲疲劳强度的影响。采用此工艺，圆角处硬化层深度达１．５ｍｍ以上，残余压应力水平高且分布较姨，弯曲疲劳强度大于２７５４Ｎ．ｍ，比未圆角强化曲轴提高８５％以上。     

磷酸铵铜微肥的研制

本文探讨了以湿法磷酸，回收的氧化铜粉及氨水为原料制取微肥磷酸铵铜的最佳工艺条件，即反应温度６０℃，最初磷酸浓度是含２５％Ｐ２Ｏ５的水溶液，反应时间是６０分钟～９０分钟，溶液最终ｐＨ值为７，氧化铜粉采用铜院工序的铜污煅烧制得。由最佳工艺条件进行的小试生产结果表明：所得产品ＣｕＮＨ４ＰＯ４的纯度在８５％以上，铜的转化率大于９０％。     

氨水预处理玉米秸秆糖化工艺条件优化

采用氨水预处理的单因素与正交试验,研究氨水浓度、时间、温度、基质浓度和粒径对玉米秸秆糖化预处理的影响.结果表明:影响氨预处理玉米秸秆的还原糖得率的主要因素是粒径,而影响木质素去除率的主要因素是氨水浓度、浸泡时间和浸泡温度,其最优工艺条件为氨水浓度15％,时间39 h,温度40℃,基质浓度162.5 g·L-1,粒径0....     

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     

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

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