硅烷、锗烷和锡烷的沸点与其分子结构间的关系

本首次用图论方法探讨了硅烷、锗烷和锡烷的沸点与其分子结构之间的关系，提出一结构基础明确的、普遍适用于硅烷、锗烷和锡烷的定量关系。计算结果表明，沸点预测值都接近实验值。应用本定量关系，不仅能够预测硅烷、锗烷和锡烷的沸点，而且有助于揭示物质结构性能关系之间的奥秘。     

烷基苯的沸点与分子结构之间定量关系的探讨

本文用图论方法探讨了烷基苯的沸点与其分子结构之间的关系，提出了一个既能合理表征烷基沸点与分子结构关系，又能准确预测沸点的定量关系式，计算结果表明，烷基苯沸点计算值都很按近实验值，平均误差０．０５％。     

脂肪腈结构与凝聚型性能之间定量关系的研究

借助于分子拓扑学探讨了脂肪腈的凝聚型性能与分子结构之间的关系，提出一个结构基础明确的定量关系式．对乙腈到二十一烷腈的计算结果表明，沸点、密度和折光指数的计算值都很接近实验值．应用这一定量关系，不仅能够合理表征脂肪睛结构与凝聚型性能的关系，而且有助于揭示物质结构与性能关系之间的奥秘。     

卤代丙烷的沸点与分子结构的关联及预测

探讨了卤代丙烷沸点的变化规律，发展了一种直接根据分子结构信息计算和预测卤代丙烷沸点的方法，对53种卤代丙烷的计算结果表明，点算值与实验值的一致性令人满意，平均误差1．18％，本文方法的提出，不仅在一定程度上揭示了卤代丙烷沸点与分子结构之间的定量关系，而且为工程上提供了一种预测卤代丙烷沸点的有效方法。     

碳氢化合物性质的计算Ⅵ、直链烷基苯同分异构体的沸点

本文用拓朴方法探讨了直链烷基苯同分异构体的沸点与其分子结构之间的关系，提出了一种直接根据分子结构计算沸点的新方法，结果表明，沸点计算值都接近实验值，平均误差仅0．1395计算精度优于文献上其它方法。     

直链烷烃的沸点与其分子结构之间的精确定量关系

根据分子结构的特点，用拓扑方法探讨了直链烷烃的沸点与分子结构之间的定量关系，提出能够精确计算直链境烃沸点的公式Tb＝1053．34-943．14exp（-0．2184WK2／3）－36.33th（0．01932P3）。对甲烷到一百烷（C1～C100）的计算结果表明，沸点的计算值都很接近实验值，平均误差仅0．075％，计算精度显著优于文献方法，     

饱和脂肪族一元醚的结构与物理性质

用图论方法探讨了饱和脂肪族一元醚的结构与其物理性质的关系，提出了结构基础明确的定量关系，据此可预测饱和脂肪族一元醚的密度，折光率和沸点。结果表明，预测值都很接近实验值，此方法不仅阐明了饱和脂肪族一元醚的密度、折光率和沸点与分子结构之间的关系，而且提供了一种预测饱和脂肪族一元醚密度、折光率和沸点的有效方法。     

计算烯烃沸点的新方法—结构信息法

根据分子结构的特点，通过区分烯烃与烷烃分子中基团的差别，借助于拓扑方法探讨了烯烃的沸点与分子结构之间的关系，将烷烃沸点计算公式推广用于烯烃沸点的计算，提出了一种计算烯烃沸点的新方法。对201种烯烃的计算结果表明，沸点计算值与实验值的一致性令人满意，平均误差0.90%。     

脂肪醇加和型性能与其分子结构间的定量关系

本文用图论方法探讨了脂肪醇和加和型性能与其分子结构之间的关系，指出一个结构基础明确的定量关系，对脂肪醇的计算结果表明，计算值十分接近实验值，应用本文定量关系，不仅能够预测脂肪醇的加和型性能，而且有助于揭示物质结构性能关系之间的奥秘。     

烷烃沸点计算方法初探

本文从烷烃的结构出发,给出了计算烷烃沸点的半定量公式.结果表明此计算方法简便易行,且计算值与实测值误差一般小于1℃.     

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.