Microstructure and Ferroelectric Properties of (Bi_(0.9)Ho_(0.1))_(3.999)Ti_(2.997)V_(0.003)O_(12) Thin Films Prepared by Sol-gel Method for Nonvolatile Memory

The (Bi0.9Ho0.1)3.999Ti2.997V0.003O12 (BHTV) films have been prepared on Pt/Ti/SiO2/Si substrates by solgel method. The microstructure and ferroelectric properties of the BHTV films were investigated. The BHTV films show a single phase of Bi-layered Aurivillius structure and dense microstructure. The Ho3+/V5+ cosubstitution can effectively improve the ferroelectric properties. The BHTV film exhibits good ferroelectric properties with 2Pr of 47.6℃/cm2, 2Ec of 265 kV/cm (at applied field of 420 kV/cm), dielec...     

Structure, Infrared Radiation Properties and Mssbauer Spectroscopic Investigations of Co_(0.6)Zn_(0.4)Ni_xFe_(2-x)O_4 Ceramics

Ferrite compound Co0.6Zn0.4NixFe2-xO4 was synthesized by solid state reaction. The structure and performance of Co0.6Zn0.4NixFe2-xO4 compounds were studied by Mssbauer spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and infrared radiant tester. Mssbauer spectroscopy and XPS analysis show the valence states and distribution of cations in Co0.6Zn0.4NixFe2-xO4. Zn2+ has invariably shown preference for the tetrahedral sites, and Ni2+ has the preference for the octahedral sites. T...     

Synthesis of a Kind of Temperature-responsive Cell Culture Surface for Corneal Sheet

In this study,acrylic acid(AA) and 4-azidoaniline were used to modify poly(N-isopropylacrylamide)(NIPAAm) in order to fabricate temperature-responsive surface for corneal epithelia cell adhesion and detachment.First,NIPAAm was copolymerized with acrylic acid.Then,the copolymer was coupled with azidoaniline to synthesize AzPhPIA,derivative of p(NIPAAm-co-AA),which possesses both thermo-and photo-sensitivities.Second,the synthesized copolymer was characterized by high performance liquid chromatography(HPLC),F...     

医疗器械与患者健康密切相关的电路保护

正医疗机构、患者及其家人越来越多地使用电子器械,包括血糖仪、血压计、外部自动化电击器(AEDs)等等。为了保证这些器械具有安全且可靠的性能,设计人员必须在开始设计电路时便考虑到电路保护的要求。例如,表面看起来轻微的静电放电,可能会造成没有正确保护的便携式医疗器械失效,给患者带来错误的(或没有)读数,从而造成危险。此外,还会因错误的结果引发不当的治疗,导致该器械生产厂家需承担法律责任。     

迎接物联网时代的来临

受益于多项技术的成熟发展,现在正是迈向＂物联网＂（IoT）时代的绝佳时刻。这些技术包括：高速蜂窝网络、蓝牙和Wi-Fi等短距离无线通信技术的快速成长,以及IPv6标准的导入,可为全球各种装置提供足够的IP地址。除此之外,几乎可提供无限计算与存储容量的云计算技术,让即使最普通的终端设备也能支持功能非常强大的应用程式。一个完美的生态系统为着＂物联网＂的兴起应运而生。     

珠光宝气

剧中的青少年们在受到好莱坞大明星的财大气粗、时尚多金的影响之下造成人格扭曲，反映出时下青少年多半恋物与拜金主义与资本主义发达。整部电影反映出时下青少年受到媒体影响只学习到这些大明星穿名牌走时尚追求浮华的物质生活，欠缺正确的道德金钱价值观，让人们深思，现在的孩子到底怎麽了呢？     

Life Prediction Based on Transient Dynamics Analysis of Van Semi-trailer with Air Suspension System

The early fatigue damage in the van-body of the semi-trailer is often caused by the unique mechanical characteristics and the dynamic impact of the loads.The traditional finite element method with static strength analysis cannot support the fatigue design of van-body;thus,the dynamics analysis should be adopted for the endurance performance.The accurate dynamics model to describe the transient impacts of all kinds of uneven road and the proper system transfer functions to calculate the load transfer effects...     

企业经营者股权激励

论述了经营者股权激励出现的缘由以及国外股权激励主要形式，介绍、分析了我国现阶段企业经营者股权激励的现状并提出了若干建议。     

煤化工用耐磨阀门的研制

介绍了煤化工及煤制油行业的工艺特点及液化技术的分类。分析了煤制油工业的经济性和发展前景。重点推介了煤制油行业用耐磨阀门的类型、结构、材料和制造的工艺重点。     

平面转弯带式输送机技术方案浅析

主要介绍平面转弯带式输送机技术方案的设计计算及实现平面转弯的技术要点,保证托辊具有一定的安装支撑角,构成内曲线抬高角,增大成槽角,对线路进行合理设计,使普通带式输送机实现了平面转弯运行,并确定转弯半径和驱动功率,又用类比法对驱动装置进行了选型。具有良好的推广应用前景。