辽宁二道沟金矿床稳定同位素地球化学研究

通过对石英中流体包裹体的氢、氧同位素研究,揭示二道沟金矿床含矿热水溶液的δＤ为－７１‰～－１０２．５‰、δ１８ＯＨ２Ｏ为１．５３‰～６．７‰;在δ１８Ｏ－δ１８Ｄ图解中它们位于２００℃时大气降水与火山岩发生水岩交换的演化线与３００℃时大气降水与火山岩发生水岩交换的演化线所夹的区域内,表明成矿流体主要为大气降水来源的地下水,而不是岩浆热液;说明该矿床产于火山岩中的大气降水参与的浅成低温热液型金矿床．     

黔西南冰洲石矿床地球化学研究

查明黔西南贞丰等地冰洲石矿床的成矿温度为１２６～１６０℃,成矿压力为（２６０～５２０）×１０５Ｐａ;成矿流体盐度（ＳＮａＣｌ）为１２．２％～１９．６％。研究了不同成矿阶段方解石、冰洲石的氢、氧、碳同位素组成及变化特征：其中冰洲石成矿阶段δ１８Ｏ值为１６．２４～１８．４８‰,平均１７．３６‰;Ｗ／Ｒ为０．１６～０．１８。而从薄层方解石阶段到冰洲石成矿阶段δＤＨ２Ｏ＝－４９～－６８‰。δ１３Ｃ（ＰＤＢ）＝－０．６０～０．７３‰,δ１３ＣＣＯ２（ＰＤＢ）为－０．３７～２．４３‰。计算出δ１３Ｃ∑Ｃ＝－２．０８～－２．４９‰。研究表明成矿流体来源于大气降水与加热的地下水的混合,碳来源于地层。探讨了冰洲石成矿时特定的物理化学条件及地质环境。     

河南南召水洞岭锌铜矿床的类型及成矿条件

水洞岭锌铜矿床是北秦岭造山带中铜矿远景区的典型黑矿型矿床，形成于二郎坪弧后盆地，时代为早古生代．成矿期间成矿流体以高Ｋ＋／Ｎａ＋、Ｆ－／Ｃｌ－比值和低ＣＯ／ＣＯ２比值为特征；形成温度为１９７～３３０℃，ｆＯ２为３×１０－３１～８．１×１０－３３Ｐａ，形成时的环境压力为７７．９７×１０５Ｐａ，ｐＨ值为５．７３～６．１２（３００℃）．同位素特征显示，成矿物质来源为下伏火山岩，且具有混合硫源（岩浆和海水硫）共同来源，岩浆热液对成矿起了一定的作用     

无氰体系中电沉积光亮铜锡合金的研究

提出了一种无氰电沉积光亮铜锡合金的新工艺，其溶液组成及操作条件为：Ｎａ３Ｃ６Ｈ５Ｏ．２Ｈ２Ｏ９０－１２０，Ｎａ２ＥＤＴＡ．２Ｈ２Ｏ２５－３５，稳定剂ＷＤＺ－９４３１０－１５?ＣｕＳＯ４．５Ｈ２Ｏ２０－４０，ＳｎＣｌ２．２Ｈ２Ｏ２０－４０ｇ．Ｌ＾－１；溶液的ｐＨ＝５－６，Ｄｋ＝１０－１５０Ａ．ｍ＾－２，Ｔ＝５０－６０℃，在上述条件下可获得含锡量为５％－１５％的光亮、细致、均匀的铜锡合金沉积层。     

新疆乔尕山金矿床稀土元素地球化学特征及其意义

乔尕山金矿床为产于中天山脆韧性剪切带中的石英脉型或破碎带蚀变岩型金矿床,南部矿床产于受剪切的志留泥盆系地层中,北部矿床产于受剪切的闪长岩体中。不同阶段形成的含金石英脉及其赋矿围岩具有相似的稀土元素地球化学特征,呈轻稀土富集型,出现不明显的Ｅｕ负异常及明显的Ｔｂ和Ｅｒ正异常。成矿流体Ｈ、Ｏ同位素变化范围小,δ１８ＯＨ２Ｏ＝４４．５‰～１０．９５‰,δＤＨ２Ｏ＝－６３．０‰～－４２．０‰,其成矿物质具     

天然气中分子氮成因及判识

天然气中分子氮（Ｎ２）的成因复杂多样,其同位素组成和其它地球化学特征各不相同。（１）大气源的Ｎ２：ＣＮ２／ＣＡｒ≤８４,且δ１５ＮＮ２≈０‰（ＡＴＭ）;（２）地壳超深部和上地幔来源的原生Ｎ２：δ１５ＮＮ２≈－２‰～＋１‰,伴生Ａｒ的４０Ａｒ／３６Ａｒ＞２０００和Ｈｅ的３Ｈｅ／４Ｈｅ＞１０－６,且Ｎ２和Ｈｅ含量具有正相关性;（３）微生物反硝化作用生成的Ｎ２：δ１５ＮＮ２＜－１０‰和地下水中ＮＯ－３及ＮＯ－２浓度异常高;（４）沉积有机质在未成熟阶段经微生物氨化作用形成的Ｎ２：δ１５ＮＮ２＜－１０‰;伴生ＣＨ４的δ１３ＣＣＨ４＜－５５‰（ＰＤＢ）;（５）沉积有机质在成熟（包括高成熟）阶段经热氨化作用形成的Ｎ２：δ１５ＮＮ２≈－１０‰～－１‰,且伴生ＣＨ４的δ１３ＣＣＨ４≈－５５‰～－３０‰;（６）沉积有机质在过成熟阶段裂解产生的Ｎ２：δ１５ＮＮ２≈＋５‰～＋２０‰;（７）沉积岩中无机氮在高温变质作用下释放出的Ｎ２：δ１５ＮＮ２≈＋１‰～－３．５‰,ＣＮ２／ＣＡｒ８４．对这些潜在源的特征进行了综合论述。     

NaS2O4.10H2O复合相变储冷体系的热力学性质

研究制备相互变温度在５－１０℃之间的新型空调储冷材料。方法测定以Ｎａ２ＳＯ４．１０Ｈ２Ｏ为主要成分的代共熔混合体系的相容温度随组成变化的与方。研究抑制过冷和相分层现象的方法结果由质量分数为８０％的Ｎａ２ＳＯ４．１０Ｈ２Ｏ、２％－８％的ＫＣｌ、５％－１０％ＮＨ４Ｃｌ和１％－５％（ＮＨ４）２ＳＯ４组成的低共水合盐体系的相变温度降至９－１０℃结论加入无机直ＫＣｌ,ＮＨ４Ｃｌ（ＮＨ４）２ＳＯ４或ＮａＣｌ降     

含二烷基硫代甲酰胺桥基配体的三核铁羰基硫簇合物的合成和表征

Ｆｅ（ＣＯ）１２与双（二烷基氨基硫代甲酰基二硫）Ｒ２ＮＣ（Ｓ）Ｓ２Ｃ（Ｓ）ＮＲ２（Ｒ＝Ｍｅ,Ｅｔ,ｉ－Ｐｒ,ＮＲ２＝ＮＣ５Ｈ５）反应,得到四个新的含前配体劈开的Ｓ,ＳＣＮＲ２和ＮＲ２配位分子的三核铁羰基族合物,并对其进行了元素分析及ＩＲ,＾１ＨＮＭＲ和ＭＳ谱学表征。它们是Ｆｅ３（ＣＯ）６（μ３－Ｓ）２（μ,η＾２－ＳＣＮＲ２）２（μ－ＮＲ２）（Ⅰ：Ｒ＝ＣＨ３,Ⅱ：Ｃ２Ｈ５）;Ｆｅ３（ＣＯ）８（μ３     

山西省柳林奥陶系马家沟组第五段第一亚段的白云石化作用

山西省柳林奥陶系马家沟组第五段第一亚段主要由白云岩组成，顶部为灰岩、沉积于浅的、局限的、低能、基底起伏小、蒸发作用强的克拉通内陆表海环境下．白云石的δ１３Ｃ值为－８．１～０．１‰，平均－３．０‰；δ１８Ｏ值为－１０．９～７．１‰，平均－８．９‰；白云石的碳氧稳定同位素值与泥晶方解石差别不大．准同生白云石的δ１３Ｃ为－４．９～０．１‰，平均－２．１‰；δ１８Ｏ值为－１０．３～－７．１‰，平均－８．７‰．成岩白去石的δ１３Ｃ值为－８．１～－３．３‰，平均－５．４‰；δ１８Ｏ值为－１０．９～－７．７‰，平均－９．２‰．白云石的Ｆｅ２Ｏ３含量为０．５１％～２．９９％，平均１．３６％，白云石较泥晶方解石的铁含量高．白云石的Ｓｒ含量为１３～４７（１０－６），平均２３（１０－６），白云石和泥晶解石的Ｓｒ含量均低．白云石较方解石的晶胞体积减少１２．７％左右．白云石化所引起的体积缩小，产生了大量的晶间孔．有利于淡水的渗透、淋滤，晶间孔进一步改造，形成了晶间溶孔和溶蚀孔、洞、缝．白云石样品的ＭｇＣＯ３含量几乎都大于５０ｍｏｌ％，白云石化，是淡水与富镁海水混合的结果．     

济阳拗陷高含CO2气藏的同位素特征和成因探讨

济阳坳陷无机成因ＣＯ２气藏多沿断裂呈带状分布,且与新生代玄武岩在空间分布上关系密切．它具有高的ＣＯ２含量（６４．５５％～９９．９６％,平均为８８．１７％）和高的δ１３ＣＣＯ２值（－７．５４‰～－３．３５‰,平均为－５．０３‰）,４０Ａｒ／３６Ａｒ（３１８～３０００,平均为１３５５）和３Ｈｅ／４Ｈｅ（４．６８×１０－６～３．５５×１０－６,平均为４．０１×１０－６）．这些特征表明,气藏中ＣＯ２为深部地幔来源ＣＯ２和地壳来源ＣＯ２按一定比例混合的产物．研究区内前第三系碳酸盐岩石的ＣＯ２含量及其δ１３Ｃ值的降低进一步表明,地壳来源ＣＯ２主要由碳酸盐岩石的脱碳反应形成．     

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.     

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…     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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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。     

Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

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