Ni—P—MoS2复合镀层的摩擦学行为

研究了以Ｎｉ－Ｐ为基质，ＭｏＳ２为分散剂的Ｎｉ－Ｐ－ＭｏＳ２自润滑复合镀层的摩擦学行为。研究结果表明，Ｎｉ－Ｐ－ＭｏＳ２复合镀层有较优异的减摩性能，ＭｏＳ２颗粒的含量及镀时对其减摩性有很大的影响。     

电沉积Fe－Ni－MoS_2复合镀层及摩擦磨损性能的研究

对Ｆｅ－Ｎｉ－ＭｏＳ２复合镀层的制备工艺及其摩擦磨损性能进行了试验研究。结果表明，依靠传统的电镀工艺，悬浮在酸性电解液中的ＭｏＳ２微粒能与Ｆｅ、Ｎｉ共沉积形成Ｆｅ－Ｎｉ－ＭｏＳ２自润滑复合镀层。通过正交试验，确定了制备复合镀层的最佳工艺参数，并与４５＃淬火钢和球墨铸铁等材料相比，Ｆｅ－Ｎｉ－ＭｏＳ２自润滑复合镀层具有良好的耐磨性和减摩性。     

电沉积Fe—Ni—MoS2复合镀层及摩擦磨损性能的研究

对Ｆｅ－Ｎｉ－ＭｏＳ２复合镀层的制备工艺及其摩擦磨损性能进行了试验研究。结果表明，依靠传统的电镀工艺，悬浮在酸性电解液中的ＭｏＳ２微粒能与Ｆｅ，Ｎｉ共沉积形成Ｆｅ－Ｎｉ－ＭｏＳ２自润滑复合镀层，通过正交试验，确定了制备复合镀层的最佳工艺参数，并与４５＾＃淬火钢和球墨铸铁等材料相比，Ｆｅ－Ｎｉ－ＭｏＳ２自润滑复合镀层具有良好的耐磨性和减磨性。     

Ni基与Ni-P基含MoS_2复会电刷镀层的减摩特性

在“球－盘”试验机上对Ｎｉ／ＭｏＳ２与 Ｎｉ－Ｐ／ＭｏＳ２两种复合镀层的摩擦磨损性能进行全面的测试与比较，并对其作用机理进行了分析。试验结果表明，两种复合镀层在油润滑条件下的摩擦系数，一般均可达到 ０．０５～０．０６的水平，而 Ｎｉ－Ｐ／ＭｏＳ２的承载能力或磨损寿命要比 Ｎｉ／ＭｏＳ２提高 ４～６倍以上。     

新型Ni－Cu－P／MoS_2固体润滑镀层优化试验研究

研制出一种新型Ｎｉ－Ｃｕ－Ｐ／ＭｏＳ２电刷镀固体润滑复合镀层。对影响镀层耐磨性的因素进行了正交设计;包括镀液中铜盐、次亚磷酸盐、二硫化钼及刷镀电压。对得到的９种镀层,进行了摩擦磨损试验,测量其磨损量及摩擦系数,最终优化出最佳的Ｎｉ－Ｃｕ－Ｐ／ＭｏＳ２镀层及相应的镀液。还对镀层的相结构及成分进行了测试,讨论了它们对镀层耐磨性的影响。结果表明,镀层中一定量的铜及亚稳间隙相对改善镀层的耐磨性及减磨性具有重要作用。     

电刷镀耐磨减摩复合镀层研究

采用电刷镀技术制备的Ｎｉ－Ｃｏ－ＺｒＯ２复合镀层具有耐磨损，抗高温氧化及镀层光亮致密的特点，Ｎｉ－Ｃｏ－ＭｏＳ２，Ｎｉ－Ｃｏ－石墨及Ｎｉ－Ｃｏ－ＰＴＦＥ复合镀层具有摩擦系数小，镀层致密光滑以及与其体金属结合强度高的特点，初步分析了复合镀层的组织结构及其形貌特征。     

电刷镀Ni-MOS_2固体润滑镀层的微观结构

具有六方晶体结构的ＭｏＳ２，在各种固体润滑涂层中能否充分发挥其减摩作用，在很大程度上决定于 ＭｏＳ２在涂层中的位向。文中对镀层的微观结构及晶粒取向进行了深入的透射电镜（ＴＥＭ）及Ｘ射线衍射分析，证明镀层中的ＭｏＳ２晶粒，绝大多数都以其（０００１）基面平行于镀层表面．显示了明显的择优取向特点。此外还结合镀层的微观结构分析．对Ｎｉ与ＭｏＳ２两相的共沉积过程进行了讨论。     

非晶态Ni－P合金与TiC微粒复合镀的研究

利用复合电镀技术，制备了非晶态Ｎｉ－Ｐ合金基ＴｉＣ复合镀层．测定了非晶态Ｎｉ－Ｐ合金镀层和（Ｎｉ－Ｐ）－ＴｉＣ复合镀层的表面形貌、结构、硬度以及耐磨性．研究了ＴｉＣ微粒对镀层的弥散强化作用．结果表明，与非晶态Ｎｉ－Ｐ合金镀层相比，（Ｎｉ－Ｐ）－ＴｉＣ复合镀层的硬度和耐磨性均超过了非晶态Ｎｉ－Ｐ合金镀层．     

刷镀Ni－SiC－WC－MoS_2复合镀层钢领的纺纱性能

探索钢领表面处理新技术．选用复合刷镀技术处理钢领内跑道表面，研究复合刷镀钢领的纺纱性能．结果表明，复合刷镀Ｎｉ－ＳｉＣ－ＷＣ－ＭｏＳ２处理后的钢领具有较优的纺纱性能．     

ABS表面化学镀Cu／Ni－P的电磁屏蔽功能

在ＡＢＳ塑料表面以化学镀沉积ＣＵ／Ｎｉ－Ｐ双镀层，并探讨其与基体的结合强度、环境稳定性、导电性及电磁屏蔽性能；以ＳＥＭ观察了镀层的微结构及表观形貌．研究结果表明，ＡＢＳ／Ｃｕ／Ｎｉ－Ｐ材料具有较高的电磁屏蔽效率，且经久耐用．     

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.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

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