镍冶炼废水处理方法

在镍冶炼过程中产生大量的废水，其中含有镍、铜、钴等金属离子．这种冶炼废水在排放前必须加以处理，以便回收有价金属元素和防止污染环境．作者采用中和－混凝法处理镍冶炼废水，并对方法进行了热力学分析，对混凝机理进行了研究．理论计算结果表明：Ni2＋，CU2＋，Co2＋开始沉淀的pH值分别为7．47，6．00和7．68；若沉淀到1mg／L以下时，所控制的pH值分别为8．48，7．01和8．70．通过实验获得的最佳条件为：pH＝9．0，聚合硫酸铁用量为镍含量的2倍，聚丙烯酰胺用量为4mg／L；处理后，废水中ρNi＜0．13mg／L，ρCo＜0．01mg／L，ρCu＜0．005mg／L．     

三种保鲜剂对延缓须苞石竹切花衰老的影响

对须苞石竹切花瓶插期三种不同保鲜剂效果进行了对比实验，以蒸馏水为对照，测定了花瓣衰老过程中的含水量、总糖量和可溶性蛋白含量，结果显示，保鲜剂处理的其含量均有明显增加，尤其以自制配方Ⅱ(3％S 250mg/L8—HQ 500mg／L苯甲酸钠 25mg/LAgNO3 25mg/L EDTA-Na2)和Ⅰ号(4％S 500mg／L CA 200mg／L8—HQ 0．02％CaCl3 0．02％KCl)的效果最好，可延缓切花衰老6天--8天。     

反相高效液相色谱法同时测定4种苯二氮Chuo类药物

提出了一种反相高效液相色谱法同时测定4种苯二氮Chuo类药物的分析方法。考察了4种苯二氮Chuo类药物的保留值与流动相组成、流速、pH及柱温等色谱条件的关系，优化了色谱条件．确定了以ODS Hypersil为色谱柱，甲醇-水(5l：49；V／V，用氨水调pH7．8)为流动相，流速为0．8mL／min，柱温为45℃，检测波长为220nm的最佳色谱条件,甲苯作为内标物，以内标法峰面积定量,硝西泮，地西泮，三唑仑和艾司唑仑线性范围分别是0．1mg／L～320mg／L，0．2mg／L～320mg／L，0．1mg／L～320mg／L和0．08mg／L～320mg／L．检测限分别为0．1mg／L，0．2mg／L，0．1mg／L和0．08mg／L,该方法用于尿液中的苯二氮革类药物的测定,其回收率为97．0％～108．7％，标准偏差为1．7％～3．0％(n=7),该方法简单、快速、精确、灵敏、重复性好。     

大孔径毛细管气相色谱法快速测定饮料中的普鲁卡因

采用固相萃取技术，以二十二烷为内标，FID检测器检测，建立了一种测定饮料中普鲁卡因的大孔径毛细管气相色谱方法，测定结果表明普鲁卡因检测的线性范围为ρ(普鲁卡因)=0．04mg／L～64mg／L，其最低检测质量浓度为0．04mg／L，相对标准偏差为2．6％，平均回收率为85．6％。     

催化电解氧化与SBR法联合处理垃圾渗滤液的实验研究

采用催化电解氧化与SBR联合工艺对垃圾渗滤液的处理进行了实验研究．催化电解氧化的最佳操作奈件为：电流密度5A／dm^2；ρcl-5000ms／L；ρSnCl2 50mg／L；极板间距0．5cm；单位体积的垃圾渗滤液所使用的极板面积500cm^2／L；电极材料采用PbO2-IrO2-TiO2／Tj（三元电极SPR）．SBR法处理催化电解氧化出水较理想的操作条件为：溶解氧2-4mg／L；曝气时间5h；沉淀30min；温度20-30℃；pH值6．5-8．0．出水各项指标的去除率分别为COD达到90％以上，NH3-N达到99％，TN达到95％以上，色度达到99％，重金属离子含量低于0．001mg／L．     

凡纳滨对虾养殖早期水体中氮磷营养盐变化规律研究

为探讨凡纳滨对虾养殖早期水体中主要营养盐含量及其变化,测定了对虾池水体中的氨氮、硝酸盐、亚硝酸和磷酸盐。结果显示,氨氮浓度变化范围：0．3-0．02mg／L,硝酸盐浓度变化范围：0．29-8．68mg／L,亚硝酸盐浓度变化范围：0．15-8．50mg/L,磷酸盐浓度变化范围：004-1．10mg／L。在养殖早期水体中,氨氮浓度呈波动变化,硝酸盐、亚硝酸盐和磷酸盐含量相对稳定。     

黄河上游多卡寺段地表水质评价

通过对黄河上游多卡寺段地表水质量的调查与监测，得出监测结果：pH8．22，溶解氧（DO）7．5mg／L，悬浮物199．2mg／L，化学需氧量（COD）12mg／L，氯化物114．1mg／L，硫酸盐247．8mg／L，总硬度126．6mg／L，矿化度427．9mg／L，钙镁总量67．4mg／L，锌0．03mg／L。结果表明：黄河上游多卡寺段水体水质均未超过于《地面水环境质量标准》（GB3838-2002）的一级水标准，水体未受到污染，水质良好。     

皮革废渣渗漏液中铬的测定

对皮革废渣(蓝皮屑)渗漏液中铬的二苯碳酰二肼分光光度测定法进行了研究，结果表明此方法的线性范围0-0.400mg／L，吸光度A对浓度c(mg／L)关系回归方程为：A=0．779c-0．0005，线性相关系数为0．9993，检出限为0．007mg／L，相对标准偏差小于3％，加标回收率为100％～105％，用此法对废渣渗漏液中铬的测定表明铬的形态为三价铬，因此，测定总铬时需先加H2SO4-HNO3进行消解，再以KMnO4氧化，二苯碳酰二肼显色，分光光度法测定．     

茜素红S与蛋白质作用的光散射光谱及其分析应用

研究了茜素红S作为光散射探针测定蛋白质的分析方法．在pH=4．0的Britton-Robinson缓冲溶液中。茜素红S与蛋白质结合后有强烈的光散射作用，在λ=353nm处，光散射强度最大，且光散射强度与蛋白质浓度成正比．由此建立了测定蛋白质含量的分析方法．方法灵敏度高，检测限达0．01mg／L，线性范围为0．02～6mg／L．方法适用于人血清蛋白含量的测定．     

耐盐能源植物海滨锦葵(Kostelezkya virginica)再生体系的建立

对海滨锦葵组织培养再生体系进行了研究，结果表明：1．海滨锦葵茎段外植体较好的愈伤组织诱导培养基组合为MS＋KT1．5mg／L＋IAA2．0mg／L或MS＋6-BA4．0mg／L＋IBA0．2mg／L＋Inositol50mg／L．2．海滨锦葵愈伤诱导不定芽的较好培养基组合为MS＋NAA2．0mg／L＋2iP5．0mg／L和MS＋NAA0．5mg／L＋2iP5．0mg／L．3．海滨锦葵腋芽分化不定芽的较好培养基组合为改良MS（含2倍有机营养）＋KT0．4mg／L＋IAA1．0mg／L．MS基本培养基中适当提高有机营养的含量对腋芽的增殖有促进作用，实验中以有机营养的含量为基本培养基2倍时效果较好．4．不定芽在1／ZMS的培养基中附加IBA1．0mg／L牛根最好．     

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.     

A computer generator for randomly layered structures

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

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。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

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     

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

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

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.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.