用激光化学反应制备非晶态TiO2及其性质初探

用ＴＥＡ ＣＯ２中激光聚焦辐照ＴｉＣｌ４＋Ｏ２体系，制得了非晶态ＴｉＯ２粉末。对粉末作了ＸＲＤ，ＸＰＳ，ＴＧＡ，ＤＴＡ和ＴＥＭ分析。并研究了制得非晶态ＴｉＯ２的微观过程，讨论了它的一些特殊性质。     

激光束对SnO2超微粒薄膜的改性作用

通过脉冲激光辐照SnO2超微粒子薄膜，研究激光束对此薄膜的改性作用。扫描电镜及X射线衍射分析表明，在激光照射区，薄膜表面氧化锡微粒重组、聚集、择优生长、晶形改善，同时薄膜仍保持超微粒子的结构。对气敏特性的研究得出，激光辐照可明显改善SnO2超微粒子薄膜对汽油的灵敏性。     

聚集激光束实现ＩnGaAsP超晶格量子阱混合

研究了晶格与ＩｎＰ匹配的ＩｎＧａＡｓＰ超晶格材料的热稳定性，实验结果表明在６００℃以上的热退火下会产生量子阱混合，采用１．０６４μｍ连续输出的Ｎｄ：ＹＡＧ 激光器对超晶格外延片进行了聚集辐照，室温光荧光谱得到了１８４ｍｅＶ的蓝移，说明激光辐照与热退火一样会产生量子阱混合效应，光荧光谱的双峰位表明运用激光处理量子阱外延惩具有一定的空间选择性，衬底预加热和激光束的聚焦可以在不减弱处理效果的情况下有效地     

超微粒子—有机聚合物薄膜的研究

我们用离子团束－飞行时间质谱（ＩＣＢ－ＴＯＦＭＳ）系统制备了金（Ａｕ）超微粒子－聚乙烯（ＰＥ）薄膜和Ｃ６０－聚乙烯薄膜。用透射电子显微镜（ＴＥＭ）分析了所制备的样品。它们的结构是Ａｕ超微粒子镶嵌在多晶的ＰＥ薄膜中，其中Ａｕ原子团呈球形，直径分布在２．０－５．０ｎｍ窄范围内，当沉积基底温度为９０℃时，Ａｕ原子团相互靠近，几乎连接起来，但仍保持原来大小。基底温度为１４０℃蒸积的Ｃ６０－ＰＥ薄膜具有晶态     

丹参有效成分的提取及抗氧化研究

对丹麦脂溶性成分的抗氧化能力做了比较全面的研究，同时对其提取方法做了比较深入的探索。结果发明，丹参的脂溶性成分抗氧化能力很强，当０．０８％的ＳＭＥＣ和０．０４％的ＴＢＨＱ一起使用时，ＥＰＡ和ＤＨＡ的氧化稳定性增加了３６倍，随着温度的降低，ＳＭＥＣ对ＥＰＡ和ＤＨＡ的抗氧化效果明显增加；１１０℃时，ＳＭＥＣ对猪油仍然有很强的抗氧化作用，并且发现野生丹参ＳＭＥＣ的含量是栽培丹参的５倍。     

THE GENERAL CATEGORICAL CLASSES BP_N AND THEIR COMPLETENESS

ＴＨＥＧＥＮＥＲＡＬＣＡＴＥＧＯＲＩＣＡＬＣＬＡＳＳＥＳＢＰ_ＮＡＮＤＴＨＥＩＲ　ＣＯＭＰＬＥＴＥＮＥＳＳＴＨＥＧＥＮＥＲＡＬＣＡＴＥＧＯＲＩＣＡＬＣＬＡＳＳＥＳＢＰ＿ＮＡＮＤＴＨＥＩＲＣＯＭＰＬＥＴＥＮＥＳＳ￥ＳｕｎＨｕｉｃｈｅｎｇ；ＬｕＹｉｚｈｏ?..     

PEG渗透调节对小麦种子活力的影响

ＰＥＧ渗透调节对小麦种子活力的影响孙耀中，李兰芬，许滨莲（河北农业技术师范学院农学系，昌黎，０６６６００）（河北省昌黎县种子管理站）ＴＮＥＥＦＦＥＣＴＳＯＦＰＥＧ’ＳＯＳＭＯＴＩＣＲＥＧＵＬＡＴＩＯＮＯＮＷＨＥＡＴＳＥＥＤＶＩＧＯＵＲＳｕｎＹａｏｚｈ...     

化学聚合制备的透明导电性聚苯胺／聚对苯二甲酸乙…

通过将经预处理的聚对苯二甲酸乙二酯薄膜浸入ＨＣｌ，氧化剂和苯胺的水溶液进行化学降合制得了高度透明和导电的ＰＡｎ／ＰＥＴ复合薄膜，这种技术是获得透明导电高分子薄膜的一种优良工具，本提供的数据可能会促进ＰＡｎ／ＰＥＴ复合薄膜作为一种新的功能材料的实际应用。     

MAGNETIC RELAXATION AT EARLY TIMES AND FLUX DIFFUSION BARRIER V（J，B，T） FOR Ti－1223 DOPED WITH Pb AND Ba BY COMPLEX AC SUSCEPTIBILITY MEASUREMENTS

ＭＡＧＮＥＴＩＣＲＥＬＡＸＡＴＩＯＮＡＴＥＡＲＬＹＴＩＭＥＳＡＮＤＦＬＵＸＤＩＦＦＵＳＩＯＮＢＡＲＲＩＥＲＶ（Ｊ，Ｂ，Ｔ）ＦＯＲＴｉ－１２２３ＤＯＰＥＤＷＩＴＨＰｂＡＮＤＢａＢＹＣＯＭＰＬＥＸＡＣＳＵＳＣＥＰＴＩＢＩＬＩＴＹＭＥＡＳＵＲＥＭＥＮＴＳＤ...     

INSITUCOMBINEDTEMPERATUREPROGRAMMEDREDUCTION─MOSSBAUERSPECTROSCOPICTECHNIQUESTUDYOFTHEINTERMEDIATESF

ＩＮＳＩＴＵＣＯＭＢＩＮＥＤＴＥＭＰＥＲＡＴＵＲＥＰＲＯＧＲＡＭＭＥＤＲＥＤＵＣＴＩＯＮ┐ＭＯＳＳＢＡＵＥＲＳＰＥＣＴＲＯＳＣＯＰＩＣＴＥＣＨＮＩＱＵＥＳＴＵＤＹＯＦＴＨＥＩＮＴＥＲＭＥＤＩＡＴＥＳＦＯＲＭＥＤＤＵＲＩＮＧＴＨＥＲＥＤＵＣＴＩＯＮＯＦ...     

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