在线电生Mn（III）流动注射电化学发光法测定利血平

设计了一种用于流通体系电解池，将恒电流电解法与流动注射技术相结合，在线定量产生不稳定化学发光试剂Mn(III)，使其浓度和反应进度得以在线控制，并基于Mn(III)能够氧化利血平产生化学发光，建立了电生Mn(III)化学发光法测定利血平的新方法，其线性范围为1.0*10^-7-1.0*10^-4g/mL，相对标准偏差为2．3％（c=5.0*10^-6g/mL,n=11)，该方法可用于针剂中利血平含量的测定。     

流动注射化学发光法测定L—色氨酸

在酸性溶液色,高锰酸钾能氧化L－色氨酸产生化学发光反应,甲醛的存在可使化学发光强度增强,据此,采用流动注射技术,建立了一种测定L－色氨酸的化学发光分析法,方法的检出限为3．5×10^-8g/mL,相对标准偏差为1．8％（1．0*10^-6g/mL L-色氨酸,n=11)线性范围为1．0×10^-7--6.0*10^6g/mL。     

高锰酸钾—H2SO4—安乃近化学发光体系的研究

在酸性溶液中，高锰酸钾可直接氧化安乃近，产生很强的化学发光，由此建立了一各测定安乃近的流动注射化学发光分析法，方法的检出限为3．1×10^-8g/mL，相对标准偏差为1．8％（6．0×10^-6g/mL安乃近，n=11),线性范围为1．0×10^-7-1.0×10^-4g/mL，此法已用于安乃近针剂和片剂中安乃近含量的测定，并对该反应的机理进行了探讨。     

流动注射化学发光法测定血浆和尿液中的酒石酸美托洛尔

酒石酸美托洛尔与Eu^3＋形成的配合物对KMnO4-Na2SO3化学发光反应具有强的增敏作用,据此建立了测定酒石酸美托洛尔的流动注射化学发光新方法.该方法测定酒石酸美托洛尔的线性范围为5.0×10^-7 - 1.0×10^-5g/mL,检出限为1×10^-7g/mL.对浓度为1.0×10^-6g/mL酒石酸美托洛尔溶液连续11次平行测定的相对标准偏差为1.4%.该方法已用于血浆和尿液中酒石酸美托洛尔含量的测定.     

NaIO4-VB2化学发光反应体系测定维生素B2

利用建立的NaIO4-H^+-H2O2-VB2化学发光新体系，结合流动注射技术建立起一种测定维生素B2的化学发光新方法．方法的线性范围为1．0×10^-7-5．0×10^-5g/mL VB2；检出限为2．7×10^-8g／mL；相对标准偏差(RSD)为2．3％(Gs=1．0×10^-6g/mL VB2，n=11)．     

流动注射化学发光测定抗坏血酸及其机理探讨

研究发现,N-溴代琥珀酰亚胺(NBS)在碱性介质条件下,可以氧化抗坏血酸,在荧光素的增敏作用下,产生较强的化学发光.基于此建立了测定痕量抗坏血酸的流动注射化学发光新方法.抗坏血酸在0.05～100μg/mL的浓度范围内与化学发光强度呈良好的线性关系,检测限为(3σ)8.7ng/mL,对0.5μg/mL的抗坏血酸连续测定11次,相对标准偏差为2.3%.将本方法用于抗坏血酸制剂和片剂含量的分析,并与药典标准方法对照,其结果比较一致,说明该方法准确、可靠.     

一种新的高灵敏测定抗坏血酸的荧光分析法

提出了一种新的高灵敏测定抗坏血酸的荧光分析法.抗坏血酸与Cu2+在pH为7.40的磷酸盐缓冲溶液中生成羟基自由基,然后羟基自由基与苯甲酸反应形成荧光物质.建立了测定抗坏血酸的适合条件,测定抗坏血酸的线性范围为(0.0128～1.92) ×10-6g/mL,方法的检测限是7.75×10-9g/mL.对于8.56 ×10-7g/mL的抗坏血酸测定6次,其相对标准偏差为1.6%.     

NBS-曙红Y体条-流动注射化学发光法检测盐酸二甲双胍

首次建立了N-溴代丁二酰亚胺（NBS）-曙红Y（EY）化学发光体系用于检测盐酸二甲双胍,在本化学发光体系中NBS为氧化剂、EY为能量受体．在碱性条件下,NBS氧化盐酸二甲双胍产生稳定的化学发光,向体系中加入十六烷基三甲基溴化胺（CTMAB）后,化学发光显著增强．研究了NBS浓度、EY浓度、CTMAB浓度、NaOH浓度、阀池管长和泵速等因素对化学发光强度的影响,初步探讨了此化学发光可能的机理．结果显示：在最佳实验条件下,盐酸二甲双胍的检测线性范围为2．6×10^-8～2．0×10^-5g·mL^-1,线性回归方程为I=32．763C（×10^-7g·mL^-1）＋98．16,r=0．9991,方法检出限（DL=3σn-1/S）为8．5×10^-9g·mL^-1．对盐酸二甲双胍片剂（标示量为0．25g·片^-1）中盐酸二甲双胍定量分析,结果平均为0．2480g·片^-1,相对标准偏差为0．4％,加标回收率为93．8％～102．7％,结果令人满意．     

鲁米诺-Cu(Ⅱ)-盐酸二甲双胍化学发光体系的研究

在Cu(Ⅱ)存在下,研究了luminol-Cu(Ⅱ)-盐酸二甲双胍化学发光体系,建立了测定盐酸二甲双胍的流动注射化学发光新方法.结果表明,在优化的实验条件下,化学发光强度与盐酸二甲双胍浓度在1.0×10-9~1.0×10-7g/mL范围内呈线性关系.该方法测定盐酸二甲双胍的检出限为5×10-10g/mL,相对标准偏差为1.1%(1.0×10-8g/mL盐酸二甲双胍溶液,n=11).该方法已用于片剂中盐酸二甲双胍含量的测定.     

流动注射化学发光法测定棉酚

NaOH介质中,铁氰化钾可以氧化棉酚产生弱的化学发光,罗丹明6G有强的增敏作用.基于此,结合流动注射分析技术,建立了一种化学发光法测定棉酚的新方法.在最佳优化条件下,该方法测定棉酚的线性范围为2.0×10^-8mol/L～2.0×10^-6mol/L,检出限为1.4×10^-9mol/L（3σ）,相对标准偏差为2.0%.将该方法应用于棉籽油和血清中棉酚含量的测定,结果满意.     

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.     

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.     

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.     

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.