内源菌激活营养成分在石英砂上的吸附行为

为了确定微生物采油所用营养成分在地层中的损耗情况,在模拟油藏条件下,分别利用浸泡法和物质平衡法研究了微生物采油中内源菌激活常用营养组分(葡萄精、硝酸钾、磷酸二氢钾)在石英砂上的静态和动态吸附作用.实验结果表明:3种组分中葡萄糖的静态吸附量和动态滞留量最高,分别为8.5×10-4和8.9×10-4而硝酸钾和磷酸二氢钾的吸附较弱,其静态吸附量与动态滞留馈都仅在1×10-4左右;动态吸附实验中,注入营养液1.5VP(VP为孔隙体积)时,岩心各组分的出口质量浓度接近入口质量浓度,转水驱2VP时,出口质量浓度接近0,表明动态驱替时吸附作用较弱.     

强酸性阳离子交换剂吸附性能比较

研究强酸性阳离子交换剂对Ca2+、Ag+和Pb2+的吸附性能。用静态法对强酸性阳离子交换剂的吸附性能进行比较。结果表明,本实验室自制的1号和2号Na+型强酸性阳离子交换纤维对Ca2+的静态饱和吸附量分别是204.4mg/g和210.9mg/g;对Ag+的静态饱和吸附量分别是540.4mg/g和557.7mg/g;对Pb2+的静态饱和吸附量分别是1038.1mg/g和1071.2mg/g。结论离子交换纤维与离子交换树脂相比,具有交换速度快、交换量大的优点。     

斜发沸石对氨氮吸附性能的试验分析

通过静态试验、动态试验和再生试验研究了天然斜发沸石吸附氨氮的热力学性质、再生性能和影响因素.试验结果表明:斜发沸石对氨氮的静态饱和吸附量为3 100 mg/100 g,当氨氮浓度为35 mg/L时,动态饱和吸附量为2 200 mg/100 g,分别是粉末活性炭、颗粒活性炭、硅藻土的20倍、23倍、27.5倍,选择重量比为3:7的NaCl NaOH混合液作为斜发沸石的再生剂可进行3次重复再生使用,有效寿命可达140 h以上.斜发沸石处理含氨废水具有重要实用前景.     

青霉菌丝体分子印迹吸附膜对Cr(Ⅲ)的吸附性

以发酵工业废弃菌丝体为主要吸附介质,通过分子印迹技术,制备得到青霉菌丝体分子印迹吸附膜。研究了青霉菌丝体分子印迹吸附膜对Cr ³⁺的吸附特性、影响因素以及吸附膜的稳定性。结果表明：静态饱和吸附容量可达65mg/g,最佳吸附pH为6,吸附过程符合Langmuir等温吸附方程;动态吸附实验穿透时间在400min左右,对皮革废水中的Cr ³⁺的动态吸附容量为27mg/g;该吸附膜稳定性较好,可以多次重复使用、静态使用批次已达60批次。     

青霉菌丝体分子印迹吸附膜对Cr(Ⅲ)的吸附性能

以发酵工业废弃菌丝体为主要吸附介质,通过分子印迹技术,制备得到青霉菌丝体分子印迹吸附膜。研究了青霉菌丝体分子印迹吸附膜对Cr3+的吸附特性、影响因素以及吸附膜的稳定性。结果表明:静态饱和吸附容量可达65mg/g,最佳吸附pH为6,吸附过程符合Langmuir等温吸附方程;动态吸附实验穿透时间在400min左右,对皮革废水中的Cr3+的动态吸附容量为27mg/g;该吸附膜稳定性较好,可以多次重复使用、静态使用批次已达60批次。     

源水中微污染水有机污染物的处理试验

本文研究了介孔复合吸附材料对微污染水源水中有机污染物和总磷的去除效果。静态吸附试验结果表明,介孔复合吸附材料对微污染水源水的TOC和总P去除率分别为79.6%和65.4%;TOC饱和吸附量为5.38mg/g.L,总P饱和吸附量为0.465mg/g.L;动态吸附试验结果表明,介孔复合吸附材料的最佳处理量为35mL/g,最佳吸附流速为5mL/min,在此条件下对TOC和总P的去除效果分别为67.8%和20.9%。综合上述结果认为介孔复合吸附材料的整体吸附效果与活性炭相当,具有一定的应用价值。     

低温等离子体接枝聚合ES基离子交换纤维的吸附性能研究

采用低温等离子体接枝聚合技术制备了ES基离子交换纤维吸附染料废水中的阳离子艳红,分析纤维接枝率和吸附时间对吸附性能的影响,测试纤维的静态饱和吸附量及洗脱与再生性能.研究表明,ES基离子交换纤维的吸附及再生吸附性能均较好,对阳离子艳红染料的吸附平衡时间为60min,静态饱和吸附量为96.2mg/g.     

D101大孔树脂对羟基钴胺素吸附性质的研究

利用D101大孔吸附树脂对羟基钴胺素的吸附与洗脱性能进行了研究．通过紫外分光光度计和高效液相色谱检测其浓度：树脂静态饱和吸附量为25．31mg／g湿树脂,动态泄漏吸附量为6．22mg／g湿树脂．此外,还考察了洗脱剂乙醇的浓度对于解吸的影响,确定60％的乙醇溶液可以达到最佳的洗脱效果．     

改性沸石混合矿物对富营养化水中磷的吸附性能研究

利用广东丰富的沸石矿产资源,组合比表面积大的矿物材料,经改性后,形成吸附和交换量大的混合矿物,去除模拟富营化水质中的磷.结果表明,混合矿物脱磷效果显著,静态实验对含磷0.5mg/L的富营养化水中磷的去除率达95.07%;动态实验中,混合矿物对磷的吸附与流量有关,饱和吸附量为0.26～0.29 mg/g;并且对混合矿物的...     

离子交换法吸附分离发酵液中的丙酸

比较了9种弱碱性阴离子交换树脂对费氏丙酸杆菌发酵液中丙酸的静态和动态吸附性能。结果表明：树脂ZGA330对含有12.6g/L丙酸的发酵液丙酸的静态吸附量最大,吸附量为44.9mg/g;动态吸附过程中对发酵液中主要营养成分糖、氨基酸吸附很少,而对丙酸吸附量高达205.5mg/g。成功地通过树脂吸附将发酵系统中的丙酸分离出去,实现了维生素B₁₂的高密度发酵,维生素B₁₂的产量由9.1mg/L提高到13.1mg/L,增加了0.44倍。研究结果为丙酸的发酵与吸附分离耦合过程研究提供了基础,丙酸吸附分离后的发酵液继续进行维生素B₁₂发酵生产可以解除丙酸的抑制作用,提高了维生素B₁₂的产量。     

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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