铁锰复合氧化物吸附偶氮染料酸性红B的性能研究

染料废水通常具有有机物含量高、抗光,抗药物,难降解等特点,因此难以用传统的污水处理方法进行处理,如能结合其他处理方法(如吸附),对此类废水进行有效处理,对于控制印染废水污染环境具有重要意义.以锰盐,铁盐为主要原料,按照不同的原料配比制备了几种磁性吸附剂,并就其对染料酸性红B的吸附性能进行了实验.实验结果表明:此吸附剂对于染料酸性红B有很强的吸附能力,吸附之后可以通过磁分离技术,对吸附剂进行有效的回收.且该吸附剂配比中Fe的含量越高,吸附效果越好.同时,pH对吸附能力有较大影响,吸附性能在酸性条件下表现良好,pH升高吸附性能变差.染料废水中普遍含有的氯离子对吸附剂的吸附性能基本没有影响,而含有的硫酸根离子则严重抑制吸附性能.     

含锰废水制备高纯碳酸锰的研究

以对苯二酚生产中副产物含锰废水为原料，研究了生产同纯碳酸锰时除杂质钠盐与硫酸根的工艺，并研究了影响杂质含量的,中温度、锰离子浓度、加料方式等。在进行大量的探索后，最终优选出母液加入法，使产品钠有硫酸根含量达到GB10503－89标准。该工艺简单，易于操作，产品成本低廉，质量合格，从而为含锰废水的利用开辟了一条新的途径。     

ASBR法处理酸性钛白废水的技术研究

采用厌氧序批式反应器（ASBR）处理高浓度硫酸盐废水，取得了较好的效果，模拟废水和实际钛白粉废水的试验显示，硫酸根离子的去除率分别达到92.1%，83.5%，COD/SO4^2-的比值对硫酸根离子去除率有较大影响，比值在2-3时效果最佳，该试验工艺的一个特点是采用了气循不与水循环并用的方法，以防止硫化氢气体对硫酸盐还原菌（SRB）的毒害，同时起搅拌作用。     

一种铜配合物的制备及其对甲基橙的高效吸附

为了有效去除废水中的染料，本文采用简单的直接沉淀法制备了一种铜配合物（Cu-CP），该方法无需任何模板剂和表面活性剂参与。采用元素分析仪、红外光谱仪、扫描电镜、X-射线光电子能谱仪、X-射线粉末衍射仪、热重以及氮气吸附-脱附等手段表征了该铜配合物。将该铜配合物作为吸附剂用于去除水溶液中的甲基橙染料，结果显示其对该染料具有优异的去除能力，同时吸附动力学结果显示其吸附特征符合准二级动力学模型，且吸附热力学结果表明该吸附过程是自发进行的放热过程。对吸附机理分析表明，其去除甲基橙的优异性能主要归因于该配合物的硫酸根离子与甲基橙的磺酸根离子间发生的离子交换作用。     

用活性炭吸附和TiO2光催化降解法处理酸性红G染色废水

用活性炭吸附、二氧化钛光催化降解处理酸性红G染色废水．用正交试验法研究了活性炭用量、吸附时间、二氧化钛用量、紫外灯照射时间对酸性红G去除率的影响．结果表明：若使用活性炭吸附,在20mL浓度为5．26×10^-5mol／L的废水中加0．8g活性炭,搅拌30min,废水中酸性红G去除率达97．1％．若用二氧化钛光催化降解,则在20mL相同浓度的废水中加二氧化钛0．05g,在300W紫外灯下照20min,废水中酸性红G去除率为99．2％．     

南方酸沉降区土壤硫酸根吸附解吸特性及其数值拟合

通过8种典型土样的硫酸根吸附解吸实验,研究了我国南方土壤硫酸根的吸附解吸特性,并运用Freundlich、Langmuir和Temkin等温方程对试验数据进行了拟合,结果表明,Freundlich方程和Langmuir方程对土壤硫酸根吸附过程拟合较好,Temkin方程则不太适合,但上述方程对硫酸根解吸过程拟合结果均较差,土壤硫酸根的解吸不是吸附的简单逆过程,而纯矿物对硫酸根的吸附解吸过程均可用上述3个方程拟合,且相关系数均在0.9以上,南方土壤中,蒙脱石的存在对硫酸根的吸附可能起特殊的促进作用。     

金属硫化物矿区环境污染的源头控制与修复技术

金属硫化物矿区尾矿的自然风化可产生大量含重金属和硫酸根离子的酸性矿山废水,造成矿区及下游水体和土壤的严重污染.文中介绍了笔者及其团队的相关研究工作:基于矿山尾矿的化学及微生物氧化机理,开发了缓释杀菌剂以抑制微生物氧化,并制备出以三乙烯四胺二硫代氨基甲酸钠为代表的尾矿钝化剂,隔断尾矿与空气、水和微生物的接触,抑制尾矿的氧化,实现从源头上控制重金属和硫酸根离子的释放;针对矿区重金属和硫酸根离子主要通过水体迁移造成周围环境污染的现状,开发了利用改性玉米秸秆、花生壳、稻草等吸附材料去除重金属和硫酸根离子的技术,并通过硫酸盐还原菌在改性吸附材料上的固定化构建了能同时去除重金属和硫酸根的生化功能材料.此外,还开发了利用经济作物玉米来修复污染土壤的"边生产-边修复"技术,实现了农业生产与土壤修复的同时进行.     

高分子聚胺PED的合成及废水硫酸根的吸附性能

以环氧氯丙烷和二乙烯三胺反应合成1种高分子聚胺(以下简称PED),采用FTIR,DSC-TG,EDX和SEM等方法对产物进行结构表征,并考察合成的高分子聚胺PED水溶液中硫酸根离子的脱除能力。研究结果表明:聚合产物PED热稳定性随产物氨基含量增加而增大,热分解温度可达285℃;产物PED对硫酸根有很强的脱除能力,其中,产物投加量的增加和酸性条件均有利于硫酸根脱除率的提高;在中性和酸性溶液中(硫酸根离子质量浓度为2.0g/L),产物脱除硫酸根达到平衡的时间分别为30min和10min;当反应时间为30min时,在中性和酸性水溶液中硫酸根脱除率分别可达90.2%和99.6%,产物吸附量分别为175mg/g和191mg/g;处理后水溶液中硫酸根离子质量浓度降为196mg/L和8mg/L,均远低于国家生活饮用水卫生标准的250mg/L(GB3838—2002)要求。     

含镭及重金属离子酸性废水处理工艺优化设计

针对含镭及重金属离子酸性废水处理常规方法的不足，对处理工艺设备进行优化设计，即采用污渣循环法处理含镭及重金属离子酸性废水．实践应用证明该工艺设备具有技术经济，中和剂耗量节省，污渣体积小的优点．经处理后的废水符合国家规定的排放标准．     

聚合氯化铝絮凝剂的制备

介绍了一种高分子絮凝剂——聚合氯化铝的合成新工艺。该工艺以硫酸铝、铝化钙和石灰为原料，引入硫酸根离子，产品的絮凝性能大大提高。     

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.     

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.     

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.     

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.     

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.