Westfalia分油机工作原理

首先介绍了Westfalia分油机的基本结构及工作原理，尤其对分离系统结构和分离原理做了详细介绍，然后对分油机的PLC控制原理进行了分析，最后对Westfalia分油机的结构和工作中常见的故障进行了分析，并提出了处理措施和加强维护保养的建议。     

便于柴油机拆装的实验装置设计

针对工科院校,开设与柴油机相关的实践教学项目必不可缺,但是,目前柴油机的拆装、演示等实验项目没有专门的多功能实验台,因此,设计了一种便于柴油机拆装的实验装置；该装置主要包括机架、固定翻转机构、操作机构、矩形接物底盘和万向脚轮等,不仅可以满足实践教学的要求,提高工作效率,并可适用于不同的柴油机机型,扩展实验项目和内容,具有广阔的应用前景.     

提高液压元件拆装实验教学质量的措施

本文分析了液压元件拆装实验的重要性,提出并实验验证了提高液压元件拆装实验的教学质量的措施.     

S型分油机转速降低原因分析及其对策探讨

该文重点对S型分油机转速降低原因进行了归纳总结并提出了相应对策，探讨了故障形成的机理，总结了维护保养需要注意的问题，为管理人员及时排除故障提供了相关解决依据，对分油机类似问题有借鉴意义。     

空中加油受油机横侧动操稳特性研究

空中加油时,加油机的气动力和力矩对受油机的操纵影响较大.需对影响大小进行定量分析,得出确定结论.本文对受油机的横侧动稳定性及操纵性进行了研究,确定了作用在受油机上由加油机翼端涡场引起的气动力和力矩的大小,提出一种简化气动模型,并将导数形式的力和力矩用于线性运动方程.研究表明,受油机具有发散的振荡特性,且主要由倾斜和侧向移动组成;飞行员在飞行时可通过不断操纵副翼来控制发散模态,保持飞机稳定.     

浅谈Alfa Laval SA型分油机的维护管理

清洁的润滑油和燃油对船舶柴油机及其辅助设备的正常运行起着至关重要的影响,因此分油机的工作的正常与否影响着柴油机及其辅助设备运行的可靠性。该文首先介绍了Alfa Laval SA型燃油/滑油分油机的基本原理、结构组成和工作过程,并根据实际工作经验,重点对某轮使用的Alfa Laval SA型燃油/滑油分油机在工作运行中出现的几例常见的典型故障,进行了详细地分析和定位,为船用分油机类似故障的准确分析及有效诊断提供了参考依据。     

“SCIENCE”轮滑油分油机跑油故障处理

本文介绍了MOPX207SGT-24-60型分油机工作过程跑油的故障发生、解决的过程,结合该型分油机的工作原理,分析了产生该故障的原因。在维修过程中,由于故障的叠加性和不稳定性,使得管理人员在查找故障时,颇费周折,甚至陷入僵局。从该次故障处理过程中,为船舶管理人员提供维修经验,为解决分油机中此类故障提供参考。     

计算机组装虚拟实验的设计与开发

在计算机组装实验中,多次拆装容易对计算机部件造成损坏.基于ActiopScript的虚拟计算机组装实验平台建构了一种全新的开放式实验教学模式,与传统实验室相比,该实验平台运行于Web环境,借助浏览器学生可随时随地使用实验平台,大大提高了实验效率,降低了实验成本,增强了学生学习的积极性、创造性和主动性.     

关于C620机床拆装课实训问题

机电、模具、数控等机械类专业实践教学中机床的拆装对学生实验、实习尤为重要.让学生能从零件、组件、部件拆装到整台机器拆装,从原理、传动路线、传动比、齿轮啮合、液压传动、电气原理、装配尺寸链、机床调整维修等方面有所掌握和提高,并加以融会贯通,提高学生动手能力,理论和实践相结合,培养学生的兴趣和爱好,为后续课程的学习,为以后进厂.走上社会奠定基础.     

某轮分油机高振动报警故障排查及检修

该文以某实轮分油机高振动故障报警为例,综合排查并分析了该次故障发生的主要原因,并提出了以后管理中应注意的事项.     

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.     

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。     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

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     

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