Study on the Positive Interaction of Sports Culture between Fujian and Taiwan——A Case Study on Amoy and Quemoy Crossing

运用文献资料法、网络信息检索、社会调查等研究方法,对厦金横渡的起源、发展现状进行了分析,探讨了以厦金横渡为例的闽台体育文化交流存在的问题,在此基础上,对两岸体育文化良性互动的可持续发展给予相关建议。Research methods of web information retrieval and social investigation were used in the current study.The origin and present development situation of Amoy-Quemoy Crossing were analyzed and existing problems of sports exchanges between both sides of the Taiwan Straits were probed,and a series of suggestions for the sustainability of the interaction were advanced

真空隔热油管隔热性能失效机理分析

本文对真空隔热油管的隔热性能主要影响因素及失效机理进行了分析,并提出了改善隔热性能与延长使用寿命的解决思路。保证隔热层具有一定的真空度是维持隔热油管隔热性能的核心,氢气渗透、管材气体脱附、油管机械破坏等因素都会使得隔热层真空度下降,减弱隔热性能。氢气主要来源于钢材的析氢腐蚀和原油裂解等。本文根据对隔热性能主要影响因素的分析提出了一些解决思路,以期减缓其隔热性能下降速度,延长隔热油管使用寿命,提高稠油热采的热效率和经济性

Application of Hierarchical Modeling and Analysis Method in C4ISR System

C4ISR系统是一个规模庞大、层次分明的离散动态系统,文章提出了一种面向C4ISR系统的UML和Petri网结合的建模分析方法。该方法采用从上到下的层次分析方法,用扩展的UML模型对系统组织结构和系统的静态特征进行描述,用扩展的Petri网模型描述和分析系统动态特性,通过相应的规则将Petri网模型转化成状态图和序列图。新方法可以对系统要求进行验证,同时还可以编程实现。最后通过该方法,对一个C4ISR系统进行了建模分析。C4ISR system is a discrete dynamic system with large scale and clearly hierarchy,this paper presents the modeling and analysis method combining UML with Petri net for C4ISR system.This approach adopts a hierarchical analytical method with top-down techniques,describes the whole systemic structure and static property through extended UML model,shows systemic dynamic characteristic using extended Petri net then transforms to the correspondence state diagram and sequence diagram.New methods verify system requirement and easily realize its code.At last the approach is illustrated by its application to C4ISR system.国家“十五”计划基金资助项目(40405010101C

Preparation of Co-YSZ/HAp Nano-composite Coating on Ti Substrate by Electrochemical Method

采用复合电沉积和电泳沉积两步法在钛基体上制备了Co-YSZ/HAp纳米复合涂层,与只采用电泳沉积法在钛基体上制备纳米HAp单一涂层进行了比较研究.采用场发射扫描电镜、X射线衍射和能量散射谱对复合涂层的微观形貌,纳米HAp外层表面形貌,晶相,复合涂层的断面形貌及元素组成分布进行分析研究.通过粘结-拉伸实验测定了涂层与基体的结合强度,结果表明,Co-YSZ/HAp纳米复合涂层与钛基体的结合强度明显高于纳米HAp单一涂层与钛基体的结合强度,说明复合涂层具有更好的力学性能.Co-YSZ/HAp nano-composite coating and nano-HAp single coating were deposited on Ti substrate using the combination of electrocodeposition and electrophoretic deposition, and electrophoretic depositions, respectively. Surface and cross section morphologies of the coatings were observed by scanning electron microscope. Element distribution and crystal phase of the coatings were analyzed by energy dispersive spectrum and X-ray diffraction. The adhesive strength of the coating and Ti substrate was determined by shear strength testing. The results indicate that the adhesive strength of Co-YSZ/HAp nano-composite coating and Ti substrate is higher than that of nano-HAp single coating and Ti substrate. It shows that Co-YSZ as an interlayer reduces the mismatch of the thermal expansion coefficients between HAp and titanium and Co-YSZ/HAp nano-composite coating has better mechanical properties.国家自然科学基金(20573086,200273055);; 福建省自然科学基金(E0210004)资助项

Novel methods by using non-vacuum insulated tubing to extend the lifetime of the tubing

The analysis of the failure mechanics, namely hydrogen permeation of vacuum insulated tubing (VIT), indicated that the failure of VIT could be decreased but could not be avoided. To solve this problem, some measures by using non-vacuum materials were proposed and analyzed in this paper. The results show that to fill the tubing with foam-glass beads or high pressure argon may lead to a good performance

Preparation of Co-YSZ/HAp nano-composite coating on Ti substrate by electrochemical method

Co-YSZ/HAp nano-composite coating and nano-HAp single coating were deposited on Ti substrate using the combination of electrocodeposition and electrophoretic deposition, and electrophoretic depositions, respectively. Surface and cross section morphologies of the coatings were observed by scanning electron microscope. Element distribution and crystal phase of the coatings were analyzed by energy dispersive spectrum and X-ray diffraction. The adhesive strength of the coating and Ti substrate was determined by shear strength testing. The results indicate that the adhesive strength of Co-YSZ/HAp nano-composite coating and Ti substrate is higher than that of nano-HAp single coating and Ti substrate. It shows that Co-YSZ as an interlayer reduces the mismatch of the thermal expansion coefficients between HAp and titanium and Co-YSZ/HAp nano-composite coating has better mechanical properties

Study on Reducing the Thermal Conductivity of the Vacuum Insulated Tubing in Hydrogen Permeation Environment

摘要 世界上原油储量中稠油、特稠油和沥青油砂的比例极高，达到总储量的70%以上。然而，由于稠油粘度极高，常温下往往凝结成固态，开采和炼制的成本和技术难度都很高，因而，目前国际上普遍没有大规模开采稠油油藏，特别是开采成本和难度最大的海上稠油油藏。我国由于原油资源不丰富，出于能源安全的考虑而大量开采稠油，包括海上稠油油藏，因此，在海上稠油开采方面国际上可供借鉴的开采经验几乎为空白，只有一些陆上稠油开采经验供参考。 由于稠油的黏度随温度上升而迅速下降，因此目前世界各国的稠油主要都是采用注蒸汽加热的方式进行开采，即：通过保温管道将高温水蒸汽注入井底加热稠油，稠油黏度降低后变为液态进行开采。 目前海上稠油热采主要使用的是预应力真空隔热油管，该油管在使用初期表现出了极好的保温性能，但使用较短时间后，保温性能会急剧下降从而失效。本文查明了导致真空隔热油管失效的根本原因——氢渗，进而提出了非真空隔热油管的新方案，具体包括泡沫玻璃隔热油管和预注高压氩气隔热油管两种措施，并通过大量的数据调研和数值模拟工作验证了新方案的可行性。 通过计算发现：泡沫玻璃隔热油管和预注高压氩气隔热油管在使用初期保温性能比真空隔热油管稍差，但也能满足保温需求；在使用一段时间后，真空隔热油管保温性能急剧下降，而泡沫玻璃隔热油管和预注高压氩气隔热油管的保温性能下降非常缓慢，从而可以大大延长隔热油管的使用寿命。 关键词：氢渗，真空隔热油管，稠油热采，泡沫玻璃，惰性气

Research Progress in Bioactive Hydroxyapatite Coating on Metal Substrate

[中文文摘]羟基磷灰石(HA)是人体和动物的骨骼和牙齿的主要无机成分,人工合成的羟基磷灰石具有良好的生物相容性和生物活性,但质脆;医用金属材料具有较好的强度、韧性和优良的加工性能,但是生物相容性差。金属基生物活性HA涂层材料兼备金属材料优良的力学性能和生物陶瓷材料的生物相容性,成为近年来发展最为迅速的一种生物材料。本文简要评述了国内外金属基HA涂层材料的研究进展状况,主要介绍了制备金属基HA涂层材料的各种物理化学方法,提出了一些存在的问题和解决方法,展望了制备HA复合涂层的发展前景。［英文文摘］The primary inorganic composition of bone and dens is hydroxyapatite. The artifical hydroxyapatite has favorable biocompatibility and bioactivity, but it is brittle. The biomedical metallic materials have high strength, toughness and machinability, but poor biocompatibility. The bioactive hydroxyapatite coating on metal substrate has been developed rapidly for its excellent mechanical properties and fine biocompatibility. In this paper, the research progress in bioactive hydroxyapatite coating on metal substrate was reviewed and the preparation methods were introduced.Some existent problems and resolvents were mentionde,and the outlook of hydroxyapatite coating was prospected as well.国家自然科学基金(20573086); 福建省自然科学基金(E0210004); 厦门大学科技创新基金资助项目

Preparation of TiO_2 Porous Films on Pure Titanium Surface

[中文文摘]以硫酸和磷酸为电解液,工业纯钛为阳极,不锈钢为阴极,恒电流阳极氧化的方式在钛表面直接获得TiO2多孔氧化膜,经过500℃热处理,促进氧化膜由非晶体向晶体的转变.采用扫描电镜和X射线衍射对阳极氧化膜的形貌和结构进行了分析,研究了电流密度、电解液种类以及浓度对TiO2多孔氧化膜形态和晶型的影响,并探讨了其形成机理.结果表明,以磷酸为电解液时钛表面仅生成锐钛矿相的TiO2,而以硫酸为电解液时钛表面生成锐钛矿和金红石两种晶相的TiO2.[英文文摘]The TiO_2 porous films were prepared directly on the surface of pure titanium by constant current anodic oxidation using sulphuric acid and phosphoric acid as electrolytes,pure titanium and stainless steel as anode and cathode respectively.Surface morphologies of the TiO_2 porous films were observed by scanning electron microscope and crystal phases were analyzed by X-ray diffraction.The effects of the current density,the kinds and concentrations of electrolytes on the surface morphologies and crystalline phases of TiO porous films were investigated ,and the forming mechanism of TiO porous films and its crystallization were discussed. The results show that the current density and electrolyte concentration are the two main factors effecting the surface morphologies and crystalline phases of the anodic oxidation films. The TiO porous films are transited from non2crystal to crystal by heat treatment at 500 ℃for two hours. The anodic oxidation films only have anatase phase on the surface of pure titanium in the phosphoric acid ,and the aperture sizes range from several hundred nanometers to several micrometers;whereas the anodic oxidation films have anatase phase and rutile phase on the surface of pure titanium in the sulphuric acid ,and the aperture sizes range from 100 ～ 200 nm.国家自然科学基金(20573086); 福建省自然科学基金(E0210004)

Numerical Simulation of the Thermal Conductivity of Thermal Insulation Pipe by Vacuum and High Pressure Argon Pre-filled

By analyzing the insulation effect of argon-filled tubing and vacuum-insulated tubing before and after hydrogen permeation respectively,a conclusion can be drawn that the insulated tubing filled with high pressure argon is better than the vacuum insulated tubing considering the lifetime and heat insulation effect.&nbsp;</span