广西主要城市倾斜面上太阳辐射总量的气候学计算

提出了倾斜面上太阳辐射总量的气候学计算公式，并据此计算了广西区主要城市各典型倾斜面上的太阳辐射月平均值。     

电位溶出分析法同时测定罐头食品中痕量铅锡

利用不除氧电位溶出分析法成功地测定了溶出电位相近的Ｐｂ、Ｓｎ两元素。以０．０５ｍｏｌ／Ｌ草酸为介质，调节溶液ＰＨ＝１．０，以溶解氧做氧化剂，静止溶出，两元素均有分高清晰的平台出现。Ｐｂ、Ｓｎ的线性范围分别为：２．０×１０－９～２．０×１０－７ｍｏｌ／Ｌ和２．０×１０－８～２．０×１０－６ｍｏｌ／Ｌ。当富集时间为４ｍｉｎ时，Ｐｂ、Ｓｎ的检测限分别为５．０×１０－１０ｍｏｌ／Ｌ和５．０×１０－９ｍｏｌ／Ｌ。此法已成功地应用于测定罐头食品中的痕量Ｐｂ、Ｓｎ。     

示差脉冲溶出伏安法测定湖水中痕量硫

本文基于Ｓ２－能与Ａｇ＋生成难溶化合物的特征，在银微盘电极上研究了Ｓ２－的示差脉冲溶出伏安法（ＤＰＳＶ）．该法不要镀汞，不需搅拌，在较稀的支持电解质溶液中就能实施．ＤＰＳＶ于０．１０ｍｏｌ／ＬＨＡｃ－ＮａＡｃ及０．０１ｍｏｌ／ＬＥＤＴＡ介质中，能检出１．０×１０－８ｍｏｌ／Ｌ的Ｓ２－，Ｓ２－的浓度为１．０×１０－７～９．０×１０－７ｍｏｌ／Ｌ及１．０×１０－６～８．０×１０－６ｍｏｌ／Ｌ范围与峰电流有良好的线性关系．该法用于湖水中Ｓ２－的测定，结果令人满意，加标回收率为９５．７％，与标准分析法比较相对误差为－６．２％．     

Al3＋替代对Mg－Mn微波铁氧体性能的影响

研究用Ａｌ３＋替代Ｆｅ３＋，对Ｍｇ－Ｍｎ尖晶石微波铁氧体性能的影响，结果表明，随Ａｌ３＋替代量增加，铁氧体的４πＭｓ下降，电阻率增加，介电损耗和磁损耗下降。当ｘ＝０．４时，４πＭｓ在６００～６５０ＫＡ／ｍ，介电损耗和磁损耗都较小，适合于Ｓ波段器件的使用要求。用化学共沉法制备粉料，并用普通氧化物工艺制备Ｍｇ－Ｍｎ铁氧体，研究了烧结温度和气氛对铁氧体性能的影响。当ｘ＝０．４时，可制得如下性能的铁氧体：４πＭｓ：６００－６５０ＫＡ／ｍ；Ｔｃ：２５０℃；ρ：４．５×１０８Ω·ｃｍ；ｔｇδｅ：１．１×１０－２（ｆ＝２６ＭＨＺ）；ｔｇδＭ：１×１０－２（ｆ＝９ＭＨＺ）；ε：１１．０；Ｄ：４．６８×１０３ｋｇ／ｍ３．     

希夫氏碱2-(1-亚异丙基)硫代氨基脲的合成、晶体结构

由丙酮与硫代氨基脲在乙醇中反应得到２－（１－亚异丙基）硫代氨基脲,并培养得到无色单晶。用Ｘ－射线衍射法测定了化合物的单晶结构。晶体属于三斜晶系,空间群Ｐ１,晶胞参数：ａ＝６．２１００（１０）,ｂ＝７．８５３０（１０）,ｃ＝７．９６６０（１０）,α＝８５．３００（１０）°,β＝６８．５６０（１０）°,γ＝７０．２４０（１０）°,Ｖ＝３３９．９２（８）３,Ｚ＝２,Ｍｒ＝１３１．２０,Ｄｃ＝１．２８２ｍｇ／ｍ３,μ＝０．３７８ｍｍ－１,Ｆ（０００）＝１４０,在５．５０°≤２θ≤５７．９８°范围内用ω－２θ扫描方式进行扫描共收集到２０３２个衍射点,其中１４５８个（Ｆ０＞４σ（Ｆ０））可观察点用于结构解析和修改。Ｒ＝０．０３０３,ｗＲ＝０．０８７６（Δ／σ）ｍａｘ＝－０．００２,Ｗ＝１／［σ２（Ｆ０２）］＋（０．０６２０Ｐ）２,Ｐ＝（ｍａｘ（Ｆ２０,０）＋２Ｆ２ｃ）／３,Ｓ＝１．００９。     

压应力作用下预制裂纹脆性材料的断裂特性

利用矿相显微镜和与之配套使用的微型加载装置，对预制裂纹脆性材料的断裂特性进行了研究，得出了在单轴及双轴应力作用下Ｋ１－Ｋ１的变化关系：Ｋ１／Ｋｌｃ＝８．６７×１０＾－７（Ｋ１／Ｋｌｃ）＾２－０．８４Ｋ１／Ｋ１ｃ＋１．９４×１０＾４和Ｋ１／Ｋ１ｃ＝１．５６×１０＾－６（Ｋ１／Ｋ１ｃ）＾２－２．９５Ｋ１／Ｋ１ｃ＋４．７０×１０＾６，并与理论结果进行了对比，此外还得出了开裂角θ与裂纹倾角β的关系：θ＝６     

银丝汞膜电极伏安法测定药品中头孢氨苄

本文以银丝汞膜电极为工作电极，在０．１０ｍｏｌ／ＬＮａＯＨ溶液中经１００℃水浴加热２０ｍｉｎ后，用线性扫描伏安仪制作ＣＥｘ的阴极还原曲线，其峰电位－０．７５Ｖ（ＶＳＡｇ／ＡｇＣｌ），浓度在２．０×１０－７～２．１０×１０－６ｍｏｌＬ－１；２．０×１０－６～２．０×１０－５ｍｏｌＬ－１范围内，峰高与浓度呈线性关系，其线性回归方程ｉ（格）＝１．２８６×１０６ｃ－０．１５０４（ｒ＝０．９９５８，ｃ：２．０×１０－５～２．０×１０－６ｍｏｌ／Ｌ）；ｉ（格）＝１．２３×１０６＋０．７８７０（ｒ：０．９９７３，ｃ＝２．０×１０－６～２．０×１０－７ｍｏｌＬ－１）．方法应用于胶囊中ＣＥｘ的含量测定并与药典法相比，结果基本一致．此外利用循环伏安等方法对其降解产物电化学行为进行初探，该体系属于准可逆吸附体系．     

精密OTA－C有源移相器的设计

本文提出了一种由跨导运算放大器（ＯＴＡ）和电容（Ｃ）实现的精密移相器。它能使正弦信号在中心频率ｆ０处，产生－９０°相移，增益为１／２。在ｆ０±１０％范围内，最大相移偏差为±０．１３°，增益最大偏差为±０．００８。移相器的中心频率ｆ０可由ＯＴＡ外控电流调节。由于电路中无电阻元件，特别适合于单片集成。本文详细地分析了ＯＴＡ性能参数对移相器性能的影响，电路的计算机模拟结果与理论分析完全相符。     

三聚氯氰存在下的（2－环己酮基）－β－丙酸与（R）－四氢噻唑－2－硫酮－4－羧酸酯反应

在三聚氯氰存在下，（２－环己酮基）－β－丙酸与（Ｒ）－四氢噻唑－２－硫酮－４－羧酸酯（甲酯、乙酯、正丁酯、正戊酯）反应，得到相应的Ｎ－（２－环己酮基）－β－丙酰－（Ｒ）－四氢噻唑－２－硫酮－４－羧酸酯１（ａ～ｄ），［α］＿Ｄ￣（２０）分别为－５０．３°，－５０．９°，－５０．０°，－７８．１°．１（ａ～ｃ）与Ｒ，Ｓ－α－苯乙胺反应得到了光学活性的Ｎ－（２－环己酮基）－β－丙酰－α－苯乙胺及Ｒ过量的α－苯乙胺．     

整函数与基样条的关系

主要结果是：对ｆ∈Ｌ２（Ｒ），有ｌｉｍＥ（ｆ，π／σ，ｍ∩Ｌ２（Ｒ））２（Ｒ）＝Ｅ（ｆ，σ∩Ｌ２（Ｒ））２（Ｒ），且存在ｆ０∈Ｌ∞（Ｒ），使得ｌｉｎＥ（ｆ０，π／σ，ｍ∩Ｌ∞（Ｒ））∞（Ｒ）＞Ｅ（ｆ０，σ∩Ｌ∞（Ｒ））∞（Ｒ），其中π／σ，ｍ为ｍ－１次的以｛（１／２）ｊπσ－１（ｍ＋１）｝ｊ∈Ｚ为节点的基样条的全体，σ表示指数σ型的整函数在Ｒ的限制的全体，其中σ＞０。     

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.     

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.     

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)

正~~     

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).     

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.