羊毛氯化废水中有机卤化物的处理

羊毛氯化处理产生有机卤化物,对人类造成极大危害,氯化工艺面临淘汰.为保护氯化工艺,采用絮凝和碱解等方法处理氯化废水,降低废水中有机卤化物的含量.经过处理,废水中可吸附有机卤化物AOX(Adsorbable Organic Halo-gens)含量可达到1mg/L以下.     

羊毛防毡缩工艺条件对处理废水中AOX浓度的影响——工艺条件的优化及废水中AOX浓度的测定

在正交实验的基础上优化羊毛防毡缩工艺以及降低废水中AOX的浓度，并利用不同处理工艺下羊毛的毡缩率及废水中的AOX浓度等指标进行了测试。结果表明，优化工艺条件下羊只物的毡缩率等指标没有显著的变化，但废水中的AOX浓度却显著地降低了。     

Influence of the Process Conditions on the Formation df AOX Compounds during Wool Chlorine Pretreatment

Chlorination occurred simultaneously with oxidation when wool was treated by chlorine-containing reagents. The adsorbable organic halogens( AOX) compounds were produced by the chlorination of amino acid residues, especially tyrosine residue. The factors that might influence the reaction of dichloroisocyanuric acid (DCCA) with tyrosine residue were discussed. Higher temperature, appropriate pH value and lower concentration of chloride ion are favorable to decrease the percentage of chlorination. Determination of optimum process conditions would be helpful to control AOX compounds formation during wool chlorine pretreatment.     

Influence of the Process Conditions on the Formation of AOX Compounds during Wool Chlorine Pretreatment

Chlorination occurred simultaneously with oxidationwhen wool was treated by chlorine-containing reagents.The adsorbable organic halogens(AOX) compounds were produced by the chlorination of amino acid residues,especially tyrosine residue. The factors that might influence the reaction of dichloroisocyanuric acid (DCCA) with tyrosine residue were discussed. Higher temperature, appropriate pH value and lower concentration of chloride ion are favorable to decrease the percentage of chlorination. Determination of optimum process conditions would be helpful to control AOX compounds formation during wool chlorine pretreatment.     

融合表面抗原SA—28基因在Pichia pastoris酵母系统中的表达

将乙肝病毒表面抗原Ｓ－ｐｒｅＳ１融合基因ＳＡ－２８插入质粒载体ｐＡＯ８１５的ＥｃｏＲ Ｉ位点中,将其置于Ｐｉｃｈｉａ Ｐａｓｔｏｒｉｓ 酵母ＡＯＸ１启动子控制下,利用电转化技术,融合基因表达单元链同ＨＩＳ４基因被整合到受体菌ＳＭＤ１１６８基因组中。对得到的工程菌进行发酵和表达产物的研究表明：ＳＡ－２８基因在该系统中的表达受甲醇诱导调控;ＳＡ－２８融合基因的表达产物具有Ｓ和ＰｒｅＳ１的双重抗原性。用     

水杨酸对菜豆不同器官抗氰呼吸诱导与交替氧化酶表达的比较研究

作者研究了水杨酸(SA)处理对菜豆幼苗不同器官抗氰交替途径容量(Valt)、实际运行活性(ρValt)与AOX表达量的影响。结果表明：SA未处理的菜豆幼苗不同器官中均存在抗氰呼吸，其中真叶的Valt和ρValt最高，其次是子叶，而下胚轴的最低；SA处理24h以后，均可使菜豆幼苗3种器官Valt与ρValt显著提高，但不改变三者抗氰呼吸活性的大小顺序。显然，SA对菜豆抗氰呼吸只起到诱导作用，并不改变它们不同器官间的呼吸特异性。Western杂交分析结果显示：菜豆不同器官Vah与ρValt的差异与AOX蛋白水平的变化相关，真叶中AOX的表达量最多，下胚轴的AOX表达量最少；SA处理时，诱导菜豆幼苗不同器官抗氰呼吸增高的程度与AOX合成表达量的增加一致，二者紧密相关。     

融合表面抗SA-28基因在Pichia Pastoris酵母系统中的表达

将乙肝病毒表面抗原S-preS1融合基因SA-28插入质粒载体pAO815的EcoR Ⅰ位点中,将其置于Pichia Pastoris酵母AOX1启动子控制下.利用电转化技术,融合基因表达单元连同HIS4基因被整合到受体菌SMD1168基因组中.对得到的工程菌进行发酵和表达产物的研究表明:SA-28基因在该系统中的表达受甲醇诱导调控;SA-28融合基因的表达产物具有S和PreS1的双重抗原性.用CsC1密度梯度离心法纯化了表达产物,融合抗原活性峰位于密度为1.19 mg/cm3的区带.     

Determination of Absorbable Organic Halogen (AOX) Concentration in Wool Dyeing Effluent of Lanasol Dyes

In this paper, the absorbable organic halogen (AOX) amounts in the effluents from Lanasol reactive wool dyeing were determined using DIN 38409 H14 methods and compared with the remaining chromophore concentratlons which were determined spectrophotometrically. It was found that the dyes remaining in the dyeing effluents did result in AOX concentratiom. By measuring the adsorption rates of Lanasol dyes on activated charcoal at different temperatures and pH values, the maximum adsorption on activated charcoal and optimum adsorption conditions of the Lanasol reactive dyes were determined. The experiments showed that the AOX values of the dyes measured by these two methods were not in agreement.he reasons for this observation are discussed.     

用于地下回灌的城市污水臭氧处理

为回用城市污水 ,以缓解我国水资源日益短缺的紧张局面 ,研究了臭氧对典型城市二级生化出水 (北京高碑店污水处理厂 )中有机物的去除效果。对以 AOX表征的有机物 ,臭氧与之的直接反应和间接反应的去除率存在限值 ,直接反应的最大去除率可达 2 4% ,间接反应的最大去除率可达 3 8%。间接反应中 ,NO-2 、细菌、苯系物优先与臭氧反应 ,AOX、DOC反应慢 ,臭氧去除 AOX是氧化卤素原子的脱卤作用。二级生化出水经臭氧处理后 ,还可以有效去除细菌 ,并破坏大分子及苯环 ,从而提高了水的可生化降解性。臭氧消耗量为 2 4mg/ L 时 ,再经土壤含水层处理 ,出水 DOC值可达地下水水源标准     

一种可吸附有机卤化物的测定方法

利用总有机碳分析仪的固体样品燃烧炉完成活性炭的燃烧,用硼砂溶液吸收产生的卤化氢,离子色谱仪测定卤化氢含量,从而得出可吸附有机卤化物的含量。可吸附有机氟化物（AOF）、有机氯（AOCl）和有机溴（AOBr）化物检出限分别为12μg、22μg、32μg／L,在0．05～1．5mg／L内有良好的线性相关性（R2〉0．995）,该方法测定AOF、AOCl、AOBr与理论值相差较小,偏差〈15％,是一种可行实用的分析方法,同时操作简单,方便,可为实验室节省购置专用可吸附有机卤化物分析仪的资金。     

Identification of Some AOX Compounds Formed in Wool Chlorination Using Model Chemicals

ＩｎｔｒｏｄｕｃｔｉｏｎＲｅｃｅｎｔｌｙｅｎｖｉｒｏｎｍｅｎｔａｌｉｓｓｕｅｓｈａｖｅａｓｓｕｍｅｄｇｒｅａｔｉｍｐｏｒｔａｎｃｅｔｈｒｏｕｇｈｏｕｔｍｏｓｔｏｆｔｈｅｗｏｒｌｄ Ｌｅｇｉｓｌａｔｉｏｎｏｎｅｎｖｉｒｏｎｍｅｎｔａｌｐｏｌｌｕ ｔｉｏｎｈａｓｂｅｃｏｍｅｍｏｒｅａｎｄｍｏｒｅｓｔｒｉｎｇｅｎｔ Ｔｅｘｔｉｌｅｗｅｔｃｈｅｍｉｃａｌｐｒｏｃｅｓｓｉｎｇｉｓｏｎｅｏｆｍａｊｏｒｓｏｕｒｃｅｓｏｆｗａｔｅｒｃｏｎｔａｍｉｎａｔｉｏｎ Ｔｈｅｃｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｔｅｘｔｉｌｅｗ…     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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-