PAC、PFS和PAFS原水处理的研究

研究了用聚合氯化铝 (PAC)、聚合硫酸铁 (PFS)和聚合硫酸铁铝 (PAFS)处理受污染的低浊度和高浊度原水净化效果。实验室和水厂试验均表明采用 PAF S处理受污染原水的效果明显好于采用单一的 PA C或 PF S的情况 ;适当提高 p H值对净化有利。文章还对 PAC、PFS和 PA FS的净水作用机理作了讨论。     

几种高分子絮凝剂的脱色性能比较

本文比较了3种高分子絮凝剂对5种阴离子模拟染料废水的脱色效果,考察了絮凝剂种类、用量、染料分子结构和分子量等因素对脱色率的影响.实验结果表明有机絮凝剂P(AM-DMC)的脱色效果优于无机絮凝剂PAC和PFS,但最佳用量范围比PAC和PFS窄;与P(AM-DMC)相比,染料分子结构和分子量对PAC和PFS的脱色率影响更大.     

无机高分子絮凝剂PSAM的性能研究

本文在与PAC,PFS对比的情况下,应用显微电泳测定技术研究了PSAM对高岭土悬浊液的絮凝除浊作用特性,测定了PSAM对其它悬浊液的除浊效果及对活性染料的脱色效果,试验了温度和pH值对除浊效果的影响,探讨了PSAM的絮凝除浊机理及脱色作用机理.实验结果表明,PSAM的絮凝除浊效果稍优于PAC和PFS;PSAM对水中悬浮颗粒同时具有电中和作用及吸附架柝作用;PASM对合—SO_3H基团的活性染料具有一定的脱色能力,温度和pH值影响PSAM的除浊效果和脱色效果。     

光电Fenton氧化法处理染料废水的试验

目的研究光电Fenton氧化法处理染料废水的脱色效果,确定处理染料废水的最佳工艺条件.方法在自制的电化学反应器中,通过光电Fenton氧化法处理染料废水试验,确定初始p H值、槽电压、曝气量、Fe2+投加量和支持电解质投加量对染料脱色效果的影响;通过Design Expert软件建立数学模型,最终拟合最优反应条件,应用响应曲面分析法模拟分析初始p H值、槽电压和曝气量3个因素在染料废水脱色过程中的显著性和交互性.结果响应曲面分析法确定的最佳脱色工艺条件为:p H值4.25、槽电压15.73 V、曝气量0.25 L/min,在此条件下,脱色率为97.186 9%;各因素对体系脱色效果影响大小为:p H值槽电压曝气量;各因素交互作用对体系脱色效果影响大小为:槽电压p H值p H值曝气量槽电压曝气量.结论光电Fenton氧化法处理染料废水的脱色效果较好.     

三种金属酞菁光敏剂的光动力作用研究

选取三种不同金属离子、不同取代基的金属酞菁光敏剂 苯硫基酞菁锌 (C56 HmN8 S4Zn)、苯硫基铝酞菁(C56 H32A1C1N8 S4)和烷氧基铝酞菁（C56A1C1N8 O4)，进行了光 敏剂对人肝癌细胞的杀伤实验。结果表明，既亲水又亲脂的取代基可以更好地与癌细胞结合， 有效杀伤癌细胞，具有较好的光动力杀伤效果。     

关于有限C*(p)-p-群的幂零类及导群

若对群G中任意子群(阿贝尔子群或循环子群)H有| HGH|＜∞,则称群G是S*(A*,C*)-群.若| HGH|≤n,则称群G是S*(n)(A*(n),C*(n))-群.在有限p-群条件下,对偶研究S*(A*,C*)-群,证明了C*(p)-p-群的幂零类不超过3,其导群是初等阿贝尔群.     

羧甲基壳聚糖用于印染废水的处理

采用羧甲基壳聚糖对两种染料溶液和印染废水进行处理 ,研究 p H、添加量、温度、时间对废水脱色的影响 .结果表明 ,羧甲基壳聚糖对水溶性染料及印染废水具有良好的脱色效果 .在 p H=6～ 7的范围内 ,且添加量为 0 .6 g· L-1、温度为 35℃时 ,脱色效果最好 .处理 2 4 h后 ,脱色率可达 90 % .     

三种金属酞菁配合物与癌细胞作用的荧光谱及分析

本文测量了三种金属酞菁配合物苯硫基酞菁锌(C56H32N8S4Zn)，苯硫基铝酞菁(C56H32AlC1Y8S4)，烷氧基铝酞菁(C56H32A1C1N8O4)与人肝癌细胞作用后的荧光光谱，并结合细胞杀伤实验作了简单分析，发现金属酞菁配合物与癌细胞作用后内生出血卟啉，从而产生光动力作用杀死癌细胞的。     

聚硅酸铝铁处理印染废水的研究

以硫酸铝渣为主要原料制备聚硅酸铝铁絮凝剂并对其絮凝性能进行了研究.实验结果表明:处理蒽醌型分散黄染料时,铝、铁总浓度(简记为M)对脱色有重要影响,但铝、铁相对含量无显著影响;使用n(M)∶n(S iO2)=1.0、n(A l)∶n(F e)=1.0的聚硅酸铝铁,用量为每升1.0 mL,分散黄溶液pH 6~10时,脱色率为90%左右.处理工业印染废水,当聚硅酸铝铁n(M)∶n(S iO2)=1.0、n(A l)∶n(F e)=1.0~3.0,用量为每升2.0 mL时,脱色率达90%左右;与聚合氯化铝相比,聚硅酸铝铁在CODC r去除率方面有明显优势.采用透射电镜对处理工业印染废水的机理进行了探讨.     

氯化镁用于染料废水的脱色研究

研究了MgCl_2处理若干种类的活性染料及分散染料的脱色效果,比较了MgCl_2/Ca(OH)_2、Al_2(SO_4)_3.PAC、FeSO_4/Ca(OH)_2的脱色效果。探讨了MgCl_2的脱色机理。实验结果表明,MgCl_2的脱色效果与染料种类、脱色的pH条件,脱色剂的用量有关;MgCl_2的脱色率随pH值升高而增加,对于活性染料废水,当pH=12.5左右时脱色率达最佳;对于分散染料废水,pH=12.0左右时脱色率达最佳;MgCl_2/Ca(OH)_2的脱色效果优于 PAC、Al_2(SO_4)_3、FeSO_4/Ca(OH)_2的脱色效果;MgCl_2的脱色机理为:(1)Mg~(2+)能与含有—OH,—SO_3H、—COOH基因的染料化合物起反应,生成稳定的螯合物,该螯合物在碱性条件下通过混凝作用从水中分离出来;(2)MgCl_2在高pH值下依靠水解生成的Mg(OH)_2胶体沉淀物对染料分子的吸附和卷扫沉降作用达到脱色目的。     

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

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.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

正~~     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to