压铸机合模机构的优化设计

在对压铸机合模铁三维有限元分析的基础上,提出了以球墨铸铁来代替铸钢制造合模机构的动模板,剖析了动板外形几何尺寸,板厚参数、肋板位置等设计参数对其结构强度的影响动模板的优化设计为压铸机合模机构的改进提供了重要的理论依据。     

压铸机合模机构的正交回归优化设计

在对压铸机合模机构的优化设计中,采用正交回归设计法建立结构性能与设计变量的近似函数,对近似函数进行优化,从而有效地解决了结构优化设计过程中优化方法需要反复进行三维有限元分析而引起的超大计算量问题;这种方法对实际应用中大量存在而又无法得到解析式的结构优化问题有着普遍的意义。     

对压铸机合模机构的结构分析

文章以合模机构所能产生的锁模力为研究对象,通过对合模油缸与机铰进行力学分析,增进了对压铸机合模机构的了解,并对现有压铸机的设计提出一些改进意见。     

COSMOS/M 有限元程序在 Tokamak 装置设计中的应用

概述了有限元技术及其在Ｔｏｋａｍａｋ装置工程设计中应用的最新发展动态。对新一代面向微型计算机的大型结构有限元分析程序ＣＯＳＭＯＳ／Ｍ作了较全面的剖析，并给出了应用该程序对核聚变实验装置中大型机械结构强度分析的应用实例。     

MFS和MFOS结构的C—V特性研究

采用ＳＯＬ－ＧＥＬ方法分别在Ｓｉ和含有ＳｉＯ２的衬底上制备出ＰＺＴ铁电薄膜，并获得了ＭＦＳ和ＭＦＯＳ结构。利用ＭＯＳ结构常用的Ｃ－Ｖ特性分析方法，对ＭＦＳ和ＭＦＯＳ结构进行了高频Ｃ－Ｖ特性测试分析，研究了Ｆ／（Ｏ）Ｓ的界面特性，结果表明，金属／ＰＺＴ／ＳｉＯ２／Ｓｉ的ＭＦＯＳ结构具有较低的界面态，可实现极化存储，并可望制成铁电场效应晶体管。     

MFS和MFOS结构的C－V特性研究

采用ＳＯＬ－ＧＥＬ方法分别在Ｓｉ和含有ＳｉＯ２的衬底上制备出ＰＺＴ铁电薄膜，并获得了ＭＦＳ和ＭＦＯＳ结构．利用ＭＯＳ结构常用的Ｃ－Ｖ特性分析方法，对ＭＦＳ和ＭＦＯＳ结构进行了高频Ｃ－Ｖ特性测试分析，研究了Ｆ／（Ｏ）Ｓ的界面特性，结果表明，金属／ＰＺＴ／ＳｉＯ２／Ｓｉ的ＭＦＯＳ结构具有较低的界面态，可实现极化存储，并可望制成铁电场效应晶体管．     

对接沟道 NMOS 结构杂质分布的二维数值模拟

针对ＶＤＭＯＳ－ＮＭＯＳ兼容集成结构建立了对接沟道ＮＭＯＳ晶体管工艺模型，根据其工艺模型，采用面向对象的Ｃ＋＋编程对对接沟道ＮＭＯＳ结构的杂质分布进行了二维数值模拟，给出了不同工艺条件下的模拟结果，并且进行了分析．结果表明，对接沟道ＮＭＯＳ结构能较好地实现ＶＤＭＯＳ与ｐ阱ＮＭＯＳ电路的兼容集成．     

O‘—Sialon—ZrO2—SiC复合材料的合成势和学分析及其制备

在分析、绘制Ｓｉ－Ｏ－Ｎ三维立体参数状态图基础上,采用纯原料合成了Ｏ‘－Ｓｉａｌｏｎ－ＺｒＯ２－ＳｉＣ复合材料,对结果用ＸＺＲＤ、ＴＥＭ进行分析,验证热力深 可靠性,结果表明：Ｏ’－Ｓｉａｌｏｎ－ＺｒＯ２－ＳｉＣ复合材料中,主晶相Ｏ‘－Ｓｉａｌｏｎ彼此之间构成网络状态结构,ＺｒＯ２和ＳｉＣ颗粒弥散于编织状结构的孔隙中,起强化作用。     

O'-Sialon-ZrO2-SiC复合材料的合成热力学分析及其制备

在分析、绘制Ｓｉ－Ｏ－Ｎ三维立体参数状态图基础上,采用纯原料合成了Ｏ’－Ｓｉａｌｏｎ－ＺｒＯ２－ＳｉＣ复合材料．对实验结果用ＸＲＤ、ＴＥＭ进行分析,验证热力学分析的可靠性．结果表明,Ｏ’－Ｓｉａ－ｌｏｎ－ＺｒＯ２－ＳｉＣ复合材料中,主晶相Ｏ’－Ｓｉａｌｏｎ彼此之间构成网络状结构,ＺｒＯ２和ＳｉＣ颗粒弥散于编织状结构的孔隙中,起强化作用     

对接沟道NMOS结构杂质分布的二维数值模拟

针对ＶＤＭＯＳ－ＮＭＯＳ兼容集成结构建立了对接沟道ＮＭＯＳ晶体管工艺模型，根据其工艺模型，采用面向对象的Ｃ＾＋＋编程对对接沟道ＮＭＯＳ结构的杂质分布进行了二维数值模拟，给出了不同工艺条件下的模拟结果，并且进行了分析。结果表明，对接沟道ＮＭＯＳ结构能较好地实现ＶＤＭＯＳ与ｐ阱ＮＭＯＳ电路的兼容集成。     

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.     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that