吸附法治理汞废气的机理研究

该文对载银活性炭吸附汞蒸气的机理进行了探讨 ,通过电子探针和扫描电镜对载银活性炭及被汞“饱和”的载银活性炭进行微观结构分析 ,结果显示 ,银在活性炭中主要分布于活性炭的凸面处 ,汞只在有银存在的地方出现 ,表明普通活性炭不具备吸附汞的能力 ,载银活性炭吸附汞属于以银为核心的多分子物理吸附 ,工业上的“饱和”载银活性炭仍具有一定的吸附汞蒸气的能力 ,为交替式吸附床的结构设计提供了技术依据 .     

新型富集材料的研究及应用

研究了４种螯合剂在活性炭上的吸附和解吸特性，并在ｐＨ７，０－７．５范围内对８种元素进行了在二元螯合活性炭柱上的吸附、硝酸反洗及样品分析试验。结果表明，本富集材料适合于野外现场直接富集水质中８种痕量元素，富集倍数为１００，变异系数为０．５８％－２．４８％之间，加入回收率在９６．３％－１０５．５％之间，可用原子吸收法分析。     

预氯化/粉炭工艺对原水藻源风险的控制效能

选用了5种粉末活性炭，开展与预氯化联用的粉末活性炭种类优选和与氯的交互影响研究。结果表明，5种粉末活性炭均可有效吸附三氯甲烷，吸附速率变化均符合拟二级动力学规律，回归相关系数均大于0.99，木质活性炭（k=0.419 12）和椰壳活性炭Ⅰ（k=0.386 93）吸附效果最好。余氯的存在会降低粉末活性炭对三氯甲烷的吸附速率，但未改变各粉末活性炭吸附效果的优劣顺序。在原水背景下，椰壳活性炭Ⅰ和木质活性炭对2-甲基异莰醇（2-MIB）去除效率在60%以上，对土臭素（GSM）去除效率在90%以上，对三卤甲烷吸附效率最高（28%）。尽管加氯会减低活性炭的吸附效率，但是其不影响不同炭型吸附的优劣顺序，木质活性炭和椰壳活性炭Ⅰ的效果依然最佳，煤质活性炭表现较差。将粉末活性炭性质与三氯甲烷、嗅味物质的去除性能进行相关性分析发现，平均孔径、碘值、亚甲基蓝值和总孔容积的相关性较为显著，平均孔径的相关系数最高，在比选优质粉末活性炭时可以将平均孔径作为重要参考因素。     

球形大孔聚氯乙烯树脂的化学转化Ⅲ.硫脲树脂的合成及其性能研究

球形大孔聚氯乙烯树脂（ＰＶＣ）与多乙烯多胺反应，生成胺化交联树脂．胺化树脂与含硫试剂和异硫氰酸苯脂反应，制得不同硫脲结构的ＴＵ－Ⅰ和ＴＵ－Ⅱ螯合树脂．ＴＵ－Ⅰ对Ａｕ（Ⅲ），Ｐｔ（Ⅳ），Ｐｄ（Ⅱ）有很大的饱和吸附量，吸附Ａｕ（Ⅲ）时出现边吸附边还原析出金的现象．ＴＵ－Ⅱ在低酸度下对Ｐｄ（Ⅱ）的吸附率仅为１５％，而对Ａｕ（Ⅲ），Ｐｔ（Ⅳ）的吸附率仍在９０％以上．ＴＵ－Ⅰ，ＴＵ－Ⅱ不吸附或少量吸附贱金属离子，显示出对贵金属离子的高选择性吸附能力，具有一定的应用前景     

吸附电解氧化去除水中邻苯二甲酸二丁酯

摘要:邻苯二甲酸酯（Phthalic acid esters，PAEs）具有致突变、致癌和致畸形的特点，严重干扰人类的内分泌系统，特别是生殖系统.邻苯二甲酸二丁酯（Dibutyl phthalate，DBP）是目前最常用的邻苯二甲酸酯类增塑剂之一，具有很大的毒性和积累性，已被中国环境保护部列为优先控制污染物.本文以DBP为研究对象，分别采用活性炭吸附、电解、吸附电解耦合技术对水中DBP的去除进行了研究.结果表明:吸附电解耦合技术具有协同作用能力，果壳活性炭进行吸附电解150min，DBP去除率为62.6％，高于果壳活性炭单独吸附150min的去除率（8.6％）与单独电解150min去除率（36.8％）之和.吸附电解的机理研究表明:活性炭可以强化电解对DBP的氧化作用，同时，电解可对活性炭进行再生，延长活性炭吸附饱和时间，提高活性炭的吸附量，两者表现为互相促进协同作用.     

特制木质颗粒活性炭的研究

将气体活化法的活化机理多孔碳石墨材料成孔理论相结合，研究木质颗粒活性炭的成孔理论与工艺，它的最大特点是：在配料中加入成孔剂且采用煅烧活化，不外加活化剂。按本法制得的木质颗粒活性炭具有很了的质量指标，以软阔叶树枝丫材木炭粉－Ｉ为原料，其粒炭得率为４７．６％。粒度为２．０５ｍｍ，强度９６％，碘吸附值１３４５．１ｍｇ／ｇ，苯吸附值５０％，亚蓝吸附值３００ｍｇ／ｇ，灰份５％，其制造方法简单，原材料易得且     

活性炭对低聚木糖的脱色

以HAC型粉状活性炭对酶解低聚木糖液进行吸附脱色，研究了活性炭的用量和酶解低聚木糖的初始浓度等因素对吸附脱色的影响规律，结果表明，酶解低聚木糖中含有少量不能被HAC型活性炭所吸附的色素物质，活性炭对色素的吸附率高于对低聚木糖的吸附率，并且对色素的吸附属于典型的“Langmuir”型等温吸附，以2．5g/L活性炭吸附16．0g/L酶解低聚木糖时，色素的吸附率可达到89．9％，低聚木糖的吸附率为14．7％。     

抗菌型载银壳层结构球粒活性炭

以粉末椰壳活性炭为原料、硅酸盐水泥为胶凝剂,利用水泥的胶凝作用将载银抗菌剂包裹在活性炭核芯的表面,制备了一种兼具吸附性能与抗菌性能的壳层结构球粒活性炭.用抑菌圈法评价试样的抗菌性能,用碘吸附值评价试样的吸附能力,选择甲醛与苯的吸附模拟使用效果.结果表明,将载银抗菌剂集中裹覆在成型活性炭颗粒的壳层上,试样的抗菌能力显著增强;壳层中抗菌剂的添加量对抗菌能力影响较大;为保持活性炭的吸附能力,壳层足够包覆住整个核芯即可.     

硫脲棉纤维的合成及对银吸附性能的研究

研究硫脲棉纤维的合成方法及其对银离子的吸附性能。该合成纤维对银离子的吸附率高达９５％，且吸附反应速度快；被吸附的银离子用４ｍｏｌ·Ｌ＾－１硝酸洗脱，洗脱率为９５％。实验表明，该合成纤维不仅合成方法简单，而且分离操作方便，可应用于银的富集和分离。     

活性炭吸附富集分光光度法测定水中的痕量钒

本文拟定了用活性炭对水中痕量钒（Ⅴ）进行预富集的方法，研究了活性炭对水中痕量钒的吸附和解吸条件，以及活性炭对钒的吸附容量．５０ｍｇ活性炭可以对５００ｍｌ水中８０μｇ以内的钒进行定量回收，回收率在９３％～１０４％之间，同时可以除去干扰测定的金属离子，最后用分光光度法通过做工作曲线来测定水中的痕量钒，工作曲线的线性回归方程为Ａ＝４．９×１０－２＋０．０１５７ｃ（μｇ／Ｌ），相关系数ｒ＝０．９９７１．利用本方法对合成海水样品中的痕量钒进行分析测试，得到满意的结果．     

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

正~~