Fe—Mn—Ni—Al系铸造合金的低温机械性能研究

本文研究了用于深冷条件下的Ｆｅ－Ｍｎ－Ｎｉ－Ａｌ系合金的化学成分、金相组织和低温机械性能。     

快凝Al-Si-Fe-Mn合金摩擦磨损性能研究

对采用快速凝固技术工艺制备的Ａｌ－Ｓｉ－Ｆｅ－Ｍｎ合金与Ａｌ－１７Ｓｉ－０．５Ｍｎ和Ａｌ－７Ｓｉ－１．３Ｆｅ－０．５Ｍｇ铸态合金进行了摩擦磨损试验,并对几种合金摩擦磨损行为进行了研究,试验结果表明,快凝Ａｌ－Ｓｉ－Ｆｅ－Ｍｎ合金比其它铸态合金的耐磨性明显增加。     

云南17种菊科植物微量元素含量特征研究

本文论述了云南１７种菊科植物９个元素含量的特征．元素含量顺序有１０种植物遵守Ｆｅ，Ａｌ＞Ｚｎ＞Ｍｎ＞Ｃｕ＞Ｐｂ＞Ｃｒ＞Ｎｉ＞Ｍｏ的规律，有５种植物遵守Ｆｅ，Ａｌ＞Ｍｎ＞Ｚｎ＞Ｃｒ＞Ｎｉ＞Ｍｏ的规律．元素含量的相对离散度为：Ａｌ＞Ｆｅ＞Ｍｏ＞Ｎｉ＞Ｍｎ＞Ｐｂ＞Ｃｕ＞Ｚｎ＞Ｃｒ．反映元素含量顺序与相对离散度顺序不完全匹配．元素Ｃｕ，Ｍｎ，Ｐｂ，Ｃｒ，Ｍｏ，Ｚｎ含量的频数分布总体为正态．Ｆｅ，Ｎｉ，Ａｌ含量的频数分布为正偏态型，并呈现高狭峰．元素Ａｌ，Ｆｅ，Ｍｎ，Ｎｉ含量间呈明显正相关；Ｆｅ与Ｃｕ，Ｚｎ，Ｍｏ，Ｃｒ间呈负相关．根据统计分级聚类分析，１７种植物分５组，１，２组共１１种植物，显示了植物对Ｃｕ，Ｆｅ，Ｐｂ，Ｎｉ，Ｃｒ吸收积累的聚类特征．第５组的小一支箭和臭灵丹，显示出对Ｆｅ，Ａｌ或Ｎｉ，Ｃｕ，Ｐｂ吸收积累的特殊性     

静高压在多层Al／Fe—Mo—Si—B纳米合金复合材料…

在３￣５．５ＧＰａ的压力范围内，经过８７３Ｋ，３０ｍｉｎｈ等温热处理由非（Ｆｅ０．９９Ｍｏ０．０１）７８Ｓｉ９Ｂ１３（ＦＭＳＢ）条带和纯金属Ａｌ片交替叠成的样品，制备出多层Ａｌ／Ｆｅ－Ｍｏ－Ｓｉ－Ｂ纳米合金复合材料。研究了静高压在复合材料制备中影响非晶ＦＭＳＢ合金晶化相，Ｆｅ－Ｍｏ－Ｓｉ－Ｂ纳米合金晶粒度和Ａｌ／Ｆｅ－Ｍｏ－Ｓｉ－Ｂ复合材料界面相的规律及机制。     

Fe－Si－Al系合金的耐碎裂性与组织的关系

Ｆｅ－Ｓｉ－Ａｌ系合金的耐碎裂性与组织的关系用于自动剪票机、磁卡电话机等的磁头铁芯材料必须使用同时具有高磁通密度、高耐磨性和高耐蚀性的磁性材料，目前能满足这些要求的材料只有Ｆｅ－Ｓｉ－Ａｌ合金。Ｆｅ－Ｓｉ－Ａｌ系合金的磁头铁芯，一般采用磨削加工方法从...     

山东平阴地区中元古代层状硅质岩热水沉积地球化学特征及沉积环境意义

在山东平阴地区中元古界地层中存在与地层整合产出的层状硅质岩。硅质岩富Ｆｅ、Ｍｎ，相对贫Ａｌ；富集Ａｓ、Ｓｂ、Ｂｉ、Ｇａ；ＲＥＥ总量低，Ｃｅ负异常，ＨＲＥＥ相对富集；δ３０Ｓｉ变化范围为－０．１‰～０．４‰，δ１８Ｏ变化范围为＋１３．６‰～＋２０．１‰，具有热水沉积硅质岩的地球化学特征。在Ａｌ－Ｆｅ－Ｍｎ和Ｆｅ－Ｍｎ－（Ｎｉ＋Ｃｏ＋Ｃｕ）三角图上均属热水沉积硅质岩。硅质岩ＭｎＯ／ＴｉＯ２比值、δＣｅ值和δ３０Ｓｉ值分析表明本区层状硅质岩主要是在深海环境下沉积的。     

热浸Zn－Ni合金镀液中锌渣的研究

本文研究了在Ｚｎ－０．１％Ｎｉ合金锭液中形成的渣的成分、相结构、形成机制以及影响成渣的两个因素．结果表明，这种渣是由单斜晶系的Ｆｅ（Ｎｉ）－Ｚｎ１３ζ合金相和纯Ｚｎ的η基体相组成的混合物，其形成机制与纯Ｚｎ镀液中渣的形成机制基本相同，即工件及钢质锌锅与镀液反应形成二元系（Ｆｅ－Ｚｎ）相（ζ相），部分剥落进入镀液中，并且其中的Ｆｅ原子被Ｎｉ原子部分取代之后形成三元系的Ｆｅ－Ｎｉ－Ｚｎ合金渣．结果还表明，向Ｚｎ－Ｎｉ合金镀液中加入少于０．２％Ａｌ及低温镀锌均有利于减少渣的形成．     

喷射沉积Al-20Si-5Fe-3Cu-Mg

利用喷射沉积技术制备了Ａｌ－２０Ｓｉ－５Ｆｅ－３Ｃｕ－１Ｍｇ合金,借助扫描电镜（ＳＥＭ）,Ｘ－射线衍射和拉伸试验等手段研究了喷射沉积合金的微观组织和力学性能,分析了Ｆｅ对合金挤压和热处理后的组织变化,拉伸试验结果表明,喷射沉积Ａｌ－２０Ｓｉ－５Ｆｅ－３Ｃｕ－１Ｍｇ合金具有比粉末冶金Ａｌ－２０Ｓｉ－３Ｃｕ－１Ｍｇ合金更高的高温（３００℃）强度。     

两种快凝AlFeX（V，W）Si合金的组织性能

采用喷射沉积坯轧制和ＲＳ／ＰＭ粉末挤压坯轧制的２种工艺制各了Ａｌ－８．５Ｆｅ－１．３Ｖ－１．７Ｓｉ和Ａｌ－８．５Ｆｅ－１．３Ｗ－１．７Ｓｉ合金的板材，并通过透射电镜，扫描电镜和力学拉伸实验研究了板材的组织性能．结果表明，综合性能ＡｌＦｅＷＳｉ合金优于ＡｌＦｅＶＳｉ合金的喷射沉积坯轧制板材．     

Fe－Mn－Si－Cr形状记忆合金的耐腐蚀性能

通过腐蚀重量法实验及电化学测试，研究了Ｆｅ－Ｍｎ－Ｓｉ－Ｃｒ形状记忆合金的耐腐蚀性能，并与Ｆｅ－Ｍｎ－Ｓｉ形状记忆合金及１８－８铬镍不锈钢的耐腐蚀性能作了比较。结果表明，Ｆｅ－Ｍｎ－Ｓｉ－Ｃｒ合金的耐腐蚀性能明显高于Ｆｅ－Ｍｎ－Ｓｉ合金，在Ｆｅ－Ｍｎ－Ｓｉ－Ｃｒ合金中随着铬含量的增加，其耐腐蚀性能也相应提高。     

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.     

Jane Eyre——A Feminist In The 19th Century

In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.     

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

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