Biocompatibility evaluation in vitro. Part III: Cytotoxicity expression of human and animal osteoblasts on the biomaterials

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Implementation of Adaptive Fuzzy Control for a Real-Time Control Demo-Model

From 1995–1999 a R&D project on fuzzy control applications to the Belgian Reactor 1 (BR1) was conducted at the Belgian Nuclear Research Centre (SCK·CEN). Due to the safety regulations of the nuclear reactor, it is not realistic to perform many experiments at BR1. In this situation, part of the pre-processing experiments had to be carried outside the reactor (e.g., comparisons of different methods and the preliminary choices of the parameters). Therefore a water-level control system, referred to as a real-time control demo-model, was designed and constructed. In this paper, the construction of the demo-model and related hardware aspects is firstly outlined, then the results of a fuzzy control (Mamdani-type) and an adaptive fuzzy control are presented. The adaptive fuzzy control is a fuzzy control with an adaptive function that can self-regulate the fuzzy control rules. Finally, an implementation of a computer simulation is introduced with an adaptive fuzzy control for this real-time control demo-model.     

FPGA的虚拟JTAG技术对并口FLASH快速编程

集成数字电路板上经常有FLASH器件需要编程,在工厂批量生产中往往要占据较多时间.特别是对于挂载在可编程器件(FPGA)的并行接口的FLASH,使用边界扫描的方法靠移位数据来仿真FLASH读写时序,从而完成FLASH器件编程的方法相当低效费时.应用了虚拟JTAG技术后,就不需要进行整个边界引脚的移位处理,可以一次性从JTAG链上加载较大的数据块,再配合并口FLASH的接口逻辑进行编程,有效地提高了效率.     

In vitro and in vivo studies on Ti-based bulk metallic glass as potential dental implant material

In this study, a high glass forming system, Ti41.5Zr2.5Hf5Cu37.5Ni7.5Si1Sn5 (TZHCNSS) bulk metallic glass (BMG), is studied in terms of microstructure, surface analysis, mechanical properties, corrosion resistance, in vitro cytotoxicity and in vivo biocompatibility. It is found that the as-prepared TZHCNSS samples are fully amorphous by XRD and TEM observations, as well as DSC curve. Comparing with pure Ti, TZHCNSS BMG shows superior mechanical properties with higher hardness and better wear resistance. Due to the oxide film formed on its surface, TZHCNSS BMG shows great corrosion resistance close to pure Ti in electrochemical measurements. The pitting corrosion potential in artificial saliva solution is much higher than that in SBF solution. The indirect and direct cytotoxicity results show that TZHCNSS extracts had obvious low cell viability on both L929 and NIH3T3 cells. However, the in vivo testing results proved that TZHCNSS BMG could integrate with bone tissue, showing excellent osseointegration.     

回路管道的缺陷分析

在意大利引进的回路组装过程中，发现一条回路试验段出口处管道的内壁有微裂纹，该回路在意大利已运行过７０００小时。为弄清裂纹的性能及来源而进行本试验。试验通过宏观、微观检测，化学成分分析，夹杂物性质分析，力学性能复验等，提示出初始缺陷形成于材料成型中，在使用中逐渐扩展成裂纹。     

型钢混凝土粘结性能试验研究

根据对型钢(角钢)埋入混凝土试件中进行的一系列抗拔破坏试验,研究了在轴拉荷载作用下角钢与混凝土之间的粘结应力分布情况,分析了角钢与混凝土之间的粘结性能,得出了辅助锚固对角钢的抗拔承载力的影响,给出了可供参考的角钢最小锚固长度的计算公式.     

信息化创造三赢——皇朝家具2005营销核心手段

厂家赢：用皇朝首席设计师的家居布置方案提升全国店面专业素质。     

腐蚀钢质烟囱剩余强度有限元分析与加固措施研究

蜀南气矿净化厂尾气烟囱为内砌耐火砖的钢质烟囱,在长期使用过程中,由于尾气残存硫和其他腐蚀物质综合作用,已经严重腐蚀和老化,不能维持简单再生产和扩大再生产的需要,必须立即采取加固措施。针对该烟囱具体腐蚀缺陷,进行可靠性鉴定。通过大量的计算机模拟和剩余强度的有限元计算,找出了烟囱的薄弱环节和对几种加固方案进行了比较分析,最终得出可靠的加固方案。为企业取得了显著的经济效益和社会效益。     

两新能源概念股借势股价翻倍

今年以来,大盘已经涨了60%,而新能源板块指数实现翻倍。今年热点围绕参股金融、券商展开,有色和钢铁股表现也相当突出,相比之下,新能源概念并未有太多行情。但部分个股依然有抢眼表现。     

SIMULTANEOUS HEAT AND MOISTURE TRANSFER IN CHEDDAR CHEESE DURING COOLING. II. MRI TEMPERATURE MAPPING

Non-destructive Magnetic Resonance Imaging (MRI) techniques were developed to monitor simultaneous heat and moisture transfer in cheese cooling. The FLASH imaging sequence was used to achieve fast data acquisition for temperature images. MRI results of temperature distributions in cheese blocks during cooing are very closed to those from numerical simulation.