直流反应溅射α-C:H薄膜

用直流平面磁控反应溅射制备了含氢非晶态碳膜（α－Ｃ：Ｈ），在０．３５－２．５μｍ波长范围内确定了它的光学常数ｎ，ｋ与禁带宽度，包括刚沉积（ＡＤ）与经真空烘烤４５０℃４０ｍｉｎ（ＨＴ）的α－Ｃ：Ｈ膜。红外透射谱、拉曼光谱与电子衍射等分析表明：α－Ｃ：Ｈ为无定形碳与金刚石共存物。热处理后，Ｃ－Ｈ与Ｃ＝Ｏ键减少，而Ｃ＝Ｃ键增加。α－Ｃ：Ｈ作为减反射膜的α－Ｃ：Ｈ／渐变ＳＳ－Ｃ／Ａｌ选择性吸收表面，具有太阳吸收率α≈０．９３（ＨＴ）．发射率ε≈０．０６（８０℃）。     

新型半导体薄膜材料的制备,结构和特性研究

主要介绍了研究所２０年来在新型薄膜半导体的制备、结构及特性研究方面所取得的成就,尤其是对非晶硅碳和非晶硅硅锗（α－ＳｉＣ：Ｈ和α－ＳｉＧｅ：Ｈ）薄膜、金刚石和类金刚石薄膜、立方氮化硼（ｃ－ＢＮ）薄膜、β－Ｃ３Ｎ４薄膜和富勒烯薄膜的研究工作取得了重要成果,不少工作已达到国际先进水平,发表论文３００余篇。     

掺氮类金刚石薄膜(α-C:H:N)显微结构的研究

用射频等离子体化学气相沉积法（ＲＦ－ＣＶＤ）和ＣＨ４、Ｎ２与Ａｒ组成的混合气体制备掺氮类金刚石薄膜（α－Ｃ：Ｈ：Ｎ）。用原子力显微镜（ＡＦＭ）、俄歇电子能谱（ＡＥＳ）、红外光谱（ＩＲ）以及显微拉曼谱（Ｍｉｃｒｏ－Ｒａｍａｎ）对α－Ｃ：Ｈ：Ｎ薄膜的表面形貌、组分和微观结构进行表征。实验结果表明,薄膜中有纳米量级的颗粒存在,而且随反应气体中Ｎ２与ＣＨ４比值的增大,薄膜中的氮元素含量也随之增大,并主要以     

基片温度对含氢非晶碳膜电学特性的影响

用电子回旋共振等离子体化学气相沉积（ＥＣＲ－ＣＶＤ）方法在不同基片温度下从苯制得了含氢非晶碳膜（ａ－Ｃ：Ｈ）,对样品进行了伏安特性测试,考察了基片温度对电阻率与击穿场强的影响,并结合Ｒａｍａｎ谱探索ａ－Ｃ：Ｈ膜的导电机制。     

小晶粒多晶薄膜CuInSe2基太阳能电池平衡态的类非晶态特？…

沿用ａ－Ｓｉ：Ｈ中类施主Ｕｒｂａｃｈ带尾态描述小晶粒多晶薄膜ｐ－ＣｕＩｎＳｅ２禁带内连续分布局域态,揭示ｐ－ＣｕＩｎＳｅ２／ｎ－ＣｄＳ异质结太阳能电池热平衡态性质,讨论类施主Ｕｒｂａｃｈ带尾态参量Ｇｄｏ,Ｅｄ对异质结热平衡性质的,指出这种类非晶态特性分析方法将为进一步研究小晶粒多晶薄膜器件提供新途径。     

准分子激光诱导下a—Si：H膜的电导率异常

用ＸｅＣｌ准分子激光器对ａ－Ｓｉ：Ｈ薄膜进行了低能量密度下的辐照处理,测量了激光辐照区内薄膜的电导率随能量密度与脉冲数的变化。研究表明,能量密度在７５ｍＪ／ｃｍ＾２附近的激光辐照可导致膜的电导率大幅度升高,这种电导率异常是膜表层形成了ｎｍＳｉ晶粒分散于ａ－Ｓｉ：Ｈ基底中的混合相的反映。     

CN_x薄膜的制备及电子结构

采用反应溅射方法制备了氮化碳薄膜,研究了反应气体压力、溅射功率对薄膜形成的影响,并用Ｘ射线电子能谱（ＸＰＳ） 和富里叶变换红外光谱（ＦＴＩＲ）对样品的电子结构进行了分析．结果表明：反应气体Ｎ２ 的压力太高或太低、溅射功率太大或太小,均不利于氮化碳膜的形成;在Ｎ２ 压力为８ Ｐａ、溅射功率为２００ Ｗ 时,薄膜的氮原子数分数得到最大值４１％ ;ＸＰＳ和ＦＴＩＲ分析结果揭示了膜中没有自由的Ｎ原子,所有的Ｎ原子均与Ｃ原子作用形成化学键,而且Ｃ Ｎ 单键、Ｃ Ｎ 双键、Ｃ Ｎ 三键共存．膜中Ｃ Ｈ 和Ｎ Ｈ 振动模式的存在,说明沉积在Ｓｉ 衬底上的氮化碳薄膜有较强的从空气中吸收氢的能力．     

溅射a—GeCNx：H薄膜的红外和拉曼特性

本文首次报道了用溅射反应法制备的ａ－ＧｅＣＮｘ：Ｈ薄膜的制备工艺、红外和拉曼谱的特性，并观测到因掺碳引起的新的Ｎ－ＣＨｎ的红外吸收峰。     

射频反应溅射非晶硅基薄膜的红外谱

本文研究了用射频反溅射法制备的非晶硅基系列薄膜（ａ－Ｓｉ：Ｈ，ａ－ＳｉＣｘ：Ｈ，ａ－ＳｉＮｘ：Ｈ和ａ－ＳｉＣｘＮｙ：Ｈ）的红外吸收谱，对其中的主要吸收区进行了分析和讨论。     

简单烷基碳负离子稳定性讨论

本文根据核磁共振谱测定结果和一些实验事实，并结合影响碳负离子稳定性的因素分析表明，简单烷基碳负离子的稳定性顺序不是：Ｃ↑－Ｈ３〉ＣＨ３Ｃ↑－Ｈ２〉（ＣＨ３）２Ｃ↑－Ｈ〉（ＣＨ３）３Ｃ↑－而是：（ＣＨ３）３Ｃ↑－〉（ＣＨ３）２Ｃ↑－Ｈ〉ＣＨ３Ｃ↑－Ｈ２〉Ｃ↑－Ｈ３。     

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…     

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。     

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     

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     

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

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

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.     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.