流动注射-化学发光法测定盐酸羟胺

基于盐酸羟胺在弱酸性介质中被ＫＩＯ４ 氧化产生Ｈ２ Ｏ２ , Ｈ２ Ｏ２ 与Ｌｕｍｉｎｏｌ 发生化学发光反应,设计了流动注射—化学发光测定盐酸羟胺的方法． 线性范围为０－０３ ～１－０μｇ／ｍＬ; 检出限为６－７ｎｇ／ｍＬ; ＲＳＤ 为３－６ ％ ． 测定含盐酸羟胺试样, 回收率为９５ ％ ～９８ ％ ．     

新邻二氮菲分光光度法测定天然水中微量铁

本文研究了用固体硫酸钾铝－盐酸羟胺代替醋酸钠溶液控制体系的ｐＨ值，对邻二氮菲分光光度法测定水中微量铁进行了新的改进。克服了原光度法［１］中空白对照显色较深，相对标准偏差较大等缺点。提高了方法的灵敏度和准确度，方法简便、快速。标准偏差为０．０６４，变异系数２．２０％，回收率为９６．０％～１００．５％。     

肟化法测定盐酸青藤碱

应用肟化法简便快速地测定了盐酸青藤碱,选择了合适的水浴温度和加热时间,实验测定的ＲＳＤ小于０．７％,并与汞液滴定法、酰化法和克氏定氮法的测定结果对照,结果表明肟化法具有较高的准确度和精密度。     

3，4，5－三甲氧基苯甲醛的合成

３，４，５－三甲氧苯甲醛是制ＴＭＰ的关键中间体，用苯酚先磺化再溴化，再经甲氧基化、甲酰化、甲基化４步反应合成。每步产率分别为７７．７％，７６．０％，４１．０％和９３．０％，总收率为２２．５％。对２，６－二甲氧基苯酚的Ｖｉｌｓｍｅｉｅｒ－Ｈａａｃｋ甲酰化反应，Ｄｕｆｆ反应以及Ｒｅｉｍｅｒ－Ｔｉｅｍａｎｎ反应等可能的甲酰化方法进行了研究。     

工业糠醛检测方法的研究

该文对工业糠醛检测方法进行了研究。着重阐述了盐酸羟胺肟化法（国标法）、气相色谱法、电位滴定法、紫外分光光度法测定糠醛的原理以及优缺点。     

几种芳烃衍生物型捕收剂的液相色谱分离和测定

报道了一种反相ＨＰＬＣ方法对几种芳烃衍生物型捕收剂的分离和测定．该法借助色谱柱ＬｉＣｈｒｏＣＡＲＴ１００ＲＰ１８（５μｍ）,流动相：甲醇－水－５％Ｈ３ＰＯ４－５％Ｈ２ＳＯ４（４５∶５５∶４∶０．５,体积分数）和紫外检测器在２８５ｎｍ波长下进行．在０．０００５～０．０１ｇ／Ｌ浓度范围内,方法的相对标准偏差为１．１％～２．４％．水杨羟肟,苯并三唑,水杨醛肟,水杨酸,铜铁灵等的检出限分别为１．０×１０－６,０．２×１０－６,１．０×１０－６,５．０×１０－６和６．０×１０－６ｇ／Ｌ,所研制的方法已应用于矿物浮选过程实际样品的分析．     

3,4,5—三甲氧基苯甲醛的合成

３，４，５－三甲氧苯甲醛是制ＴＭＰ的关键中间体，用苯酚先磺化再溴化，再经甲氧基化、甲酰化、甲基化４步反应合成。每步产率分别为７７．７％，７６．０％，４１．０％和９３．０％，总收率为２２．５％，对２，６－二甲氧基苯酚的Ｖｉｌｓｍｅｉｅｒ－Ｈａａｃｋ甲酰化反应，Ｄｕｆｆ反应以及Ｒｅｉｍｅｒ－Ｔｅｉｍａｎｎ反应等可能的甲酰化方法进行了研究。     

示波极谱法测定大气中甲醛

利用甲醛与盐酸羟胺反应生成甲肟,通过甲肟的还原波测定甲醛的量,甲醛浓度与峰电流在10~(-4)～10~(-5) mol/L间成线性关系,最低检出限为1×10~(-5) mol/L,相对标准偏差在2.1％以下。     

两种三高立方烷酮肟的氧化反应研究

研究了将五环［５．４．０．０２，６．０３，１０．０５，９］十一烷－８，１１－二肟２和五环［６．３．０．０２，６．０３，１０．０５，９］十一烷－４，７－二肟８氧化为硝基的反应，实验表明，这两种肟的直接氧化未能成功．对２，最合适的方法是用Ｎ－溴代琥珀酰亚胺（ＮＢＳ）作为氧化剂；对８，最合适的方法是用溴和臭氧分步氧化．     

赤泥沉降用新型氧肟酸絮凝剂的合成与应用

以自制的非离子型聚丙烯酰胺水溶胶为原料,盐酸羟胺和氢氧化钠为改性试剂,采用先羟肟化再水解的两段控温工艺制备新型氧肟酸絮凝剂。通过对合成产物进行氯化铁吸附显色、进口铝土矿溶出赤泥沉降及红外光谱测试,得到最佳制备工艺条件:初始聚丙烯酰胺水溶胶质量分数为8%,改性剂羟胺碱水溶液pH=13.5,无需补碱,羟胺与酰胺基的物质的量比为1:1,在60℃时羟肟化3 h,在85℃时水解2 h,在此条件下合成的氧肟酸聚合物具有一定的水解度和羟肟化度,氯化铁吸附显色等级为3;与常用工业絮凝剂相比,自制氧肟酸型絮凝剂能明显改善进口铝土矿溶出赤泥沉降性能,沉降速度达11.5 m/h,上清液吸光度仅为0.639。     

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.     

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.     

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.     

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.     

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.     

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.