Lewis酸催化合成1-氰基-2，3，5-三苯甲酰氧基-β-D-呋喃核糖的研究

以鸟苷为起始物，制备了１－乙酰氧基－２，３，５－三苯甲酰氧基－β－Ｄ－呋喃核糖（２），再利用化合物（２）与三甲基氰基硅烷反应制备了标题化合物（１）．着重研究了多种Ｌｅｗｉｓ酸（ＳｎＣｌ４、ＡｌＣｌ３、ＦｅＣｌ３、ＢＦ３·ＯＥｔ２等）对化合物（２）→（１）的反应的催化作用，同时讨论了化合物（２）与三甲基氰基硅烷的最佳配比，并对化合物（２）的制备方法进行了改进     

广西鹅膏属(Amanita Pers.)3种易混淆的食用菌与剧毒磨菇

介绍食用菌橙盖鹅膏白色变种Ａｍａｎｉｔａｃａｅｓａｒｅａ（Ｓｃｏｐ．ｅｘＦｒ．）Ｐｅｒｓ．ｅｘｓｃｈｗ．ｖａｒ．ａｌｂａＧｉｌｌ．）、剧毒磨菇春生鹅膏（Ａ．ｖｅｒｎａ（Ｂｕｌｌ，ｅｘＦｒ．）Ｐｅｒｓ．ｅｘＶｉｔｔ．）和鳞柄白鹅膏（Ａ．ｖｉｒｏｓａＬａｍ．ｅｘＳｅｅｒ．）的形态特征和特性．     

鸡冠花种子研究：脂肪酸分析与经口急性毒理试验报告

采用有机溶剂抽提了３个不同栽培品种鸡冠花（ＣｅｌｏｓｉａｃｒｉｓｔａｔａＬ．）籽油,使用气相色谱法（ＧＣ）分析测定了籽油的脂肪酸组分．并且对常见品种圆绒鸡冠（Ｃ．ｃｒｉｓｔａｔａＬ．ｃｖＣｈｉｌｄｓｉ）和两个杂交变种鸡冠花的籽油的脂肪酸组分进行了比较研究．结果表明,圆绒鸡冠籽油含有１１种脂肪酸,包括４种微量脂肪酸（ＴＦＡ）．在７种主要脂肪酸中,亚油酸含量占据优势,杂交栽培变种９５０１（Ｃ．ｃｒｉｓｔａｔａＬ．ｃｖ．９５０１）和９５０２（Ｃ．ｃｒｉｓｔａｔａＬ．ｃｖ．９５０２）均分别含有７种脂肪酸而不含有ＴＦＡ,其含量数值与前者大致相近．饱和脂肪酸（ＳＦＡ）与不饱和脂肪酸（ＵＳＦＡ）之比是１∶３．鸡冠花籽油具有多不饱和脂肪酸（ＰＵＦＡ）含量高的特点．提示鸡冠花籽油是一种良好的油脂资源,具有一定的营养保健价值．此外,按Ｈｏｒｎ＇ｓ法完成了鸡冠花（杂交变种）种子经口急性毒性试验．结果表明,鸡冠花种子属无毒类物质．该项结论与古代中医典籍的记载是一致的     

广西鹅膏属（Amanita Pers.）3种易混淆的食用菌与剧毒蘑菇

介绍食用菌橙盖鹅膏白色变种Ａｍａｎｉｔａ ｃａｅｓａｒｅａ （Ｓｃｏｐ．ｅｘ Ｆｒ．）Ｐｅｒｓ．ｅｘ Ｓｃｈｗ．ｖａｒ．ａｌｂａ Ｇｉｌｌ．）、剧毒蘑菇春生鹅膏（Ａ．ｖｅｒｎａ（Ｂｕｌｌ．ｅｘ Ｆｒ．）Ｐｅｒｓ．ｅｘ Ｖｉｔｔ．）和鳞柄白鹅膏（Ａ．ｖｉｒｏｓａ Ｌａｍ．ｅｘ Ｓｅｃｒ．）的形态特征和特性。     

广西鹅膏属（AmanitaPers．）3种易混淆的食用菌与剧毒磨菇

介绍食用菌橙盖鹅膏白色变种Ａｍａｎｉｔａｃａｅｓａｒｅａ（Ｓｃｏｐ．ｅｘＦｒ．）Ｐｅｒｓ．ｅｘＳｃｈｗ．ｖａｒ．ａｌｂａＧｉｌ．）、剧毒磨菇春生鹅膏（Ａ．ｖｅｒｎａ（Ｂｕｌ．ｅｘＦｒ．）Ｐｅｒｓ．ｅｘＶｉｔ．）和鳞柄白鹅膏（Ａ．ｖｉｒｏｓａＬａｍ．ｅｘＳｅｃｒ．）的形态特征和特性。     

Welded Tubular Joint Fatigue Reliability Analysis

ＷｅｌｄｅｄＴｕｂｕｌａｒＪｏｉｎｔＦａｔｉｇｕｅＲｅｌｉａｂｉｌｉｔｙＡｎａｌｙｓｉｓＣｈｅｎＸｕＺｈａｎｇＸｉｎｇｆａｎｇＷｕＳｈｅｎｇ（Ｄｅｐｔ．ｏｆＣｈｅｍ．Ｅｎｇ．）（ＴａｉｙｕａｎＢｏｉｌｅｒＦａｃ．）ＡｂｓｔｒａｃｔＩｎｔｈｉｓｐａｐ...     

连续参数集值下鞅的收敛定理

首先给出了连续参数集值下鞅的定义．继而证明了连续参数集值下鞅的三个等价定理：（ａ）Ｌ１ｗｋｃ（Ｘ）值下鞅等价于任给τ１＜τ２,τ１,τ２∈Ｔ,∫ΩＦτ１ｄＰ∫ΩＦτ２ｄＰ;（ｂ）Ｌ１ｆｃ（Ｘ）值下鞅等价于任给ｓ,ｔ∈Ｒ＋,ｓ＜ｔ,Ｓ１Ｆｓ（Ｆｓ）ｃｌ｛Ｅ（ｇ｜Ｆｓ）,ｇ∈Ｓ１Ｆｔ（Ｆｔ）｝;（ｃ）Ｘ可分时,闭凸集值下鞅等价于任给ｓ,ｔ∈Ｒ＋,ｓ＜ｔ,Ａ∈Ｆｓ,ｃｌ∫ＡＦｓｄＰｃｌ∫ＡＦｔｄＰ．最后给出了弱紧凸集值随机集族的弱收敛定理和Ｘ有ＲＮＰ,Ｘ可分时闭凸集值右连续下鞅的弱收敛定理．     

四氢呋喃与六氢苯酐共聚的研究

研究了四氢呋喃（ＴＨＦ）与六氢苯酐（ＨＨＰＡ）共聚合的动力学行为,并测定了６℃和１８℃条件下ＴＨＦ的表观聚合速度常数分别是１．５×１０－２Ｌ／（ｍｏｌ·ｓ）和２．０５×１０－２Ｌ／（ｍｏｌ·ｓ）;ＨＨＰＡ的表观聚合速度常数分别是１．３８×１０－３Ｌ／（ｍｏｌ·ｓ）和１．６２×１０－３Ｌ／（ｍｏｌ·ｓ）．     

高三尖杉酯碱对白血病细胞分化和肿瘤转移的影响

为研究高三尖杉酯碱（Ｈｏｍ）对白血病细胞分化和肿瘤转移的影响．采用四氮唑蓝法检测ＨＬ－６０细胞的分化及测定游离磷含量观测肿瘤细胞Ｎａ＋－Ｋ＋－ＡＴＰ酶和Ｍｇ＋＋－ＡＴＰ酶活性．肿瘤转移模型采用小鼠皮下接种Ｌｅｗｉｓ肺癌观测肺转移灶数和小鼠足跖接种Ｐ３８８白血病细胞观察动物生存期,且用γ射线测定法评价１２５Ｉ－纤维蛋白原与肿瘤细胞的结合能力．结果显示Ｈｏｍ１．５～４．５μｇ／Ｌ能诱导ＨＬ－６０细胞分化,Ｈｏｍ０．１μｍｏｌ／Ｌ２４ｈ对Ｆｒｉｅｎｄ白血病细胞Ｎａ＋－Ｋ＋－ＡＴＰ酶活性抑制,对Ｍｇ＋＋－ＡＴＰ酶活性无影响,Ｈｏｍ０．５～１．５ｍｇ·ｋｇ－１／ｄ剂量下能抑制Ｌｅｗｉｓ癌肺转移和Ｐ３８８白血病细胞淋巴道转移,以及Ｈｏｍ２～１０ｍｇ／Ｌ抑制纤维蛋白原与癌细胞的结合．提示Ｈｏｍ能通过以上途径诱导肿瘤细胞分化和抗肿瘤转移     

The crystallization and noncrystallization in the diffusion process of Ag ultrafine particles

ＴｈｅｅｖｏｌｕｔｉｏｎｐｒｏｃｅｓｓｏｆＡｇＵＦＰＡｇＵＦＰａｒｅｐｒｏｄｕｃｅｄｂｙｓｐｕｔｔｅｒｉｎｇｔｅｃｈｎｉｑｕｅ,ａｎｄｔｈｅｓｐｅｃｉｆｉｃｐｒｏｃｅｓｓ［１,２］ｃａｎｂｅｄｅｓｃｒｉｂｅｄａｓｂｅｌｏｗ．Ｆｉｒｓｔｌｙ,ｔｈｅＡｇｐａｒｔｉｃｌｅｓ（ａｔｏｍｓｏｒｆｒａｇｍｅｎｔｓ）ｓｐｕｔｔｅｒｉｎｇｆｒｏｍｔｈｅＡｇｔａｒｇｅｔｄｅｐｏｓｉｔｏｎｔｈｅａｍｏｒｐｈｏｕｓｃａｒｂｏｎｆｉｌｍａｆｔｅｒｔｈｅｑｕｉｃｋｄｉｆｆｕｓｉｏｎ．Ａｎｄｔｈｅｎｔｈｅｓｅｄｉｍｅ…     

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.     

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.     

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。     

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.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with