改性木屑处理含Cr（VI）废水的研究

通过正交试验选择制备改性木屑的最佳条件，水解改性后的木屑能将Ｃｒ（Ⅵ）还原成Ｃｒ＾３＋，每克改性木屑对Ｃｒ（Ⅵ）的最大还原能力为４９０ｍｇ。将其装成柱子，让ρＣｒ（Ⅵ）＝ｍｇ／Ｌ及ｐＨ＝２的含Ｃｒ（Ⅵ）电镀废水通过柱子，其接触时间不小于６ｍｉｎ，Ｃｒ（Ⅵ）的还原率在９９．５％以上。     

水中痕量Cr(Ⅵ)的流动注射-分光光度测定

研究建立了测定水中痕量Ｃｒ（Ⅵ）的二苯基碳酰二肼（ＤＰＣ）－流动注射分光光度法,将含Ｃｒ（Ⅵ）水样注入到Ｈ２ＳＯ４溶液和ＤＰＣ溶液的混合流中,在λｍａｘ＝５４０ｎｍ处对反应形成的紫红色Ｃｒ（Ⅱ,Ⅲ）－二苯基偶氮碳酰肼蝥合物进行分光光度检测．线性范围为０．０３～１．６０ｍｇ／ＬＣｒ（Ⅵ）,检测限为０．０１４ｍｇ／Ｌ,测定频率为１００次／ｈ．本法灵敏度高、选择性好、分析速度快．用本法测定工业废水中痕量Ｃｒ（Ⅵ）,获得满意结果     

微量钒的停流流动注射－动力学光度法测定

依据Ｖ（Ⅳ）－Ｃｒ（Ⅵ）反应对Ｃｒ（Ⅵ）－Ⅰ－氧化还原反应的诱导，以淀粉络合物为指示剂建立了一种测定微量钒的停流－诱导动力学光度法．线性范围为０～１．８ｍｇ／Ｌ，方法检测限为０．００８ｍｇ／Ｌ．除Ｆｅ２＋、Ｓｂ３＋外，大部分共存离子不影响测定．测定了土样中钒含量，结果满意．     

5''''-硝基-水杨基荧光酮-氯代十六烷基吡啶荧光熄灭法测定痕量Cr(Ⅵ)

基于Ｃｒ（Ⅵ）－５′－硝基－水杨基荧光酮（５′－Ｎ－ＳＡＦ）－氯代十六烷基吡啶（ＣＰＣ）体系的荧光熄灭效应，提出一种测定痕量铬（Ⅵ）的新荧光分析方法．ｐＨ在４．５～５．５范围内的柠檬酸—氢氧化钠缓冲溶液中，在ＣＰＣ存在下，Ｃｒ（Ⅵ）与５′－Ｎ－ＳＡＦ形成摩尔比为１２的配合物，配合物的激发波长和发射波长分别为：λｅｘ１＝４７５ｎｍ，λｅｘ２＝５０５ｎｍ，λｅｍ＝５２５ｎｍ．Ｃｒ（Ⅵ）浓度在０．８～５０μｇ／Ｌ范围内与ΔＦ呈良好的线性关系，相关系数ｒ＝０．９９９２，检测限为０．８μｇ／Ｌ．本法灵敏度高，选择性好，适用于水样、人发中痕量Ｃｒ（Ⅵ）的直接测定     

褐煤腐植酸对Cr（Ⅵ）离子吸附物性试验

采用云南寻向褐煤撮提取的腐植酸对Ｃｒ（Ⅵ）溶液进行吸附性能试验，发现ｐＨ值在４～５范围时，该腐植酸对Ｃｒ（Ⅵ）的最大吸附量可达３５．３０ｍｇ／ｍ。     

Cr(Ⅵ)氧化5-溴水杨基荧光酮光度法测定微量Cr

在硫酸介质中,Ｃｒ（Ⅵ）将５－溴水杨基荧光酮（５－ＢＳＡＦ）氧化成最大吸收峰为４９４ｎｍ的有色产物,其表观摩尔吸光系数为３．６７×１０４Ｌ／（ｍｏｌ·ｃｍ）,Ｃｒ（Ⅵ）量在０～１５ｍｇ／２５Ｌ范围内服从比耳定律。用此法测定了电镀废液中微量Ｃｒ,回收率为９８．５％～１０３％,相对标准偏差为２．６％     

非晶态铬电镀溶液的电极过程

用Ｎｉ，Ｃｕ，Ｆｅ和玻璃碳电极，研究了非晶态铬电镀过程中Ｃｒ（－Ⅵ）还原为Ｃｒ（Ⅲ）的电化学特征，发现Ｃｒ（Ⅵ）还原为Ｃｒ（Ⅲ）的电势与电极材料密切相关，在金属电极上还存在着新相的形成和生长过程，新相形成主要是钝化膜中的铬离子还原为金属铬，这为后继的铬电沉积提供了晶体生长中心的过程。     

5′—硝基—水杨基荧光酮—氯代十六烷基吡啶荧光熄灭法测…

基于Ｃｒ（Ⅵ）－５′－硝基－水杨基荧光酮（５′－Ｎ－ＳＡＦ）－氯代十六烷基吡啶体系的荧光熄灭效应，提出一种测定痕量铬的新荧光分析方法，ＰＨ在４．５－５．５范围内的柠檬酸－氢氧化钠缓冲溶液中，在ＣＰＣ存在下，Ｃｒ（Ⅵ）与５′－Ｎ－ＳＡＦ形成摩尔比为１：２的配合物，配合物的激发波长和发射波分别为：λｅｃ１－４７５ｎｍ，λｅｘ２＝５０５ｎｍ，λｃｍ＝５２５ｎｍ，Ｃｒ（Ⅵ）浓度在０．８－５０μｇ／Ｌａｉｌ     

Cr（Ⅵ）的新富集剂──三聚氰酰胺甲醛树脂

天然水和工业废水中微量的铬Ｃｒ（Ⅵ）可以通过与三聚氰酰胺甲醛树脂的交换而被富集．本文研究了Ｃｒ（Ⅵ）的直接富集方法，并对Ｃｒ（Ⅵ）的富集能力、富集酸度、及回收率作了讨论．     

光合细菌降解3种有机废水的试验研究

选用从有机废水中分离出的７株光合细菌菌株，并用于处理豆制品、淀粉、肉制品废水。研究试验表明：①经对ＣＯＤ＿（Ｃｒ）＝５２８００ｍｇ／Ｌ的豆制品废水进行１４４ｈ的处理，去除率达９２．７％；②经对ＣＯＤ＿（Ｃｒ）＝３８６４ｍｇ／Ｌ的淀粉废水进行７２ｈ处理，去除率达９９．５％；③经对ＣＯＤ＿（Ｃｒ）＝５０ｌ０ｍｇ／Ｌ的肉制品废水进行７２ｈ处理，去除率达９３％。另通过光合细菌菌株对不同浓度不同性质的废水处理比较、单菌株与混合菌株的比较；时间、ｐＨ值、接种量等因素对处理的影响比较，均得到了今人满意的处理试验结果。     

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.