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Manufacturing of graded titanium scaffolds using a novel space holder technique

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Bioactive Materials 2017年第4期2卷 248-252页

作者： Yunhui Chen Damon kent Michael Bermingham Ali Dehghan-Manshadi Gui Wang Cuie Wen Matthew Dargusch Queensland Centre for Advanced Materials Processing and Manufacturing(AMPAM) The University of QueenslandSt.Lucia4072Australia School of Science and Engineering University of the Sunshine CoastMaroochydore DCQLD4558Australia ARC Research Hub for Advanced Manufacturing of Medical Devices Australia School of Engineering RMIT UniversityMelbourne3001Australia

To optimize both the mechanical and biological properties of titanium for biomedical implants,a highly flexible powder metallurgy approach is proposed to generate porous scaffolds with graded porosities and pore *** pellets acting as space holders were compacted with titanium powder and then removed by dissolution in water before *** morphology,pore structure,porosity and pore interconnectivity were observed by optical microscopy and *** results show that the porous titanium has porosity levels and pore size gradients consistent with their design with gradual and smooth transitions at the interfaces between regions of differing porosities and/or pore ***,the porous titanium has high interconnectivity between pores and highly spherical pore *** this article we show that this powder metallurgy processing technique,employing the novel sugar pellets as space-holders,can generate porous titanium foams with well-controlled graded porosities and pore *** method has excellent potential for producing porous titanium structures for hard tissue engineering applications.

关键词： Porous scaffolds Titanium Powder metallurgy Space holder Graded porosity

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元典“PVP影随行”拆解手记

微型计算机 2005年第1期25卷 107-108页

作者： kent

“知其然，更要知其所以然”，这是真正的DIY精神：2004年第22期MP3播放器的拆解文章让大家饱眼福的同时也了解了其内部结构，今天的硬件拆解我们为大家带来的则是逐渐火热起来的另一类数码硬件产品——便携式MPEG4电影播放器。

关键词：拆解电影播放器硬件产品 DIY 内部结构数码文章 MP3播放器 MPEG4 便携式

Influence of Coolant on Cutting Tool Performance

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Journal of Materials Science & Technology 1997年第3期13卷 199-205页

作者： K.H.W.Seah and X.Li(Dept. of Mechanical and Production Engineering, National University of Singapore, 10 kent Ridge Crescent,Singapore 119260) Dept. of Mechanical and Production Engineering National University of Singapore Singapore 119260 10 Kent Ridge Crescent Singapore

This paper reports a Study carried out to substantiate or refute the belief that when coolant is applied, the cutting performance is actually improved. Experiments on cutting forces and chip geometry were conducted in which AISI 1050 Steel was machined by turning using P30 uncoated tungsten carbide tools. Experiments were performed on a CNC Okuma LH35-N lathe undermachining conditions commonly used in workshops in Singapore and many other parts of the world.

关键词： Tool Influence of Coolant on Cutting Tool Performance

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LGA 775处理器安装指南

微型计算机 2004年第24期24卷 117-118页

作者： kent

从SLOT 1到Socket 370以及Socket478，CPU平台的一次次变更都伴随着处理器的一次次技术革新与升级。当Socket T架构伴随i915/925芯片组到来时，我们又该如何应对？

关键词：处理器 Socket478 芯片组 CPU 升级架构安装技术革新应对变更

动静相宜，创享高清——索尼HDR-SR12E高清DV体验之旅

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微型计算机 2008年第16期28卷 45-48页

作者： kent

毫无疑问，在高清风潮的影响下，数码摄像机也正在由传统的标清迈向高清。其中，硬盘式的高清DV由于其大容量、便于携带等特点而逐渐成为了DV市场的中坚主力。由于产品的多样与复杂性，如果你只是想要选择一款可以拍摄高清视频的数码摄... 详细信息

毫无疑问，在高清风潮的影响下，数码摄像机也正在由传统的标清迈向高清。其中，硬盘式的高清DV由于其大容量、便于携带等特点而逐渐成为了DV市场的中坚主力。由于产品的多样与复杂性，如果你只是想要选择一款可以拍摄高清视频的数码摄像机，那么我们相信市场上绝大多数的产品都能满足你的需求。不过假如你想选择一款时尚、小巧，而且功能丰富、性能卓越、存储容量大的产品，而且你的钱包也不是太紧张，那么我们向你推荐SONY HDR-SR12E（后文简称SR12E），一款具备旗舰本色的硬盘式高清数码摄像机。

关键词： DV 数码摄像机索尼存储容量 SONY 大容量复杂性产品

PROJECTION-PURSUIT BASED PRINCIPAL COMPONENT ANALYSIS:A LARGE SAMPLE THEORY

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Journal of Systems Science & Complexity 2006年第3期19卷 365-385页

作者： Jian ZHANG Institute of Mathematics,Statistics and Actuarial Science,University of kent,Canterbury,kent CT2 7NF,U.K. Institute of Systems Science,Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100080,China Institute of Mathematics Statistics and Actuarial Science University of Kent Canterbury Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences

The principal component analysis （PCA） is one of the most celebrated methods in analysing multivariate data. An effort of extending PCA is projection pursuit （PP）, a more general class of dimension-reduction techniques. However, the application of this extended procedure is often hampered by its complexity in computation and by lack of some appropriate theory. In this paper, by use of the empirical processes we established a large sample theory for the robust PP estimators of the principal components and dispersion matrix.

关键词： Dispersion matrices eigenvalues and eigenvectors empirical processes principal component analysis projection pursuit (PP).

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透视显存的秘密

微型计算机 2003年第5期23卷 83-84页

作者： kent

The Ozone Component of Global Change:Potential Effects on Agricultural and Horticultural Plant Yield,Product Quality and Interactions with Invasive Species

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Journal of Integrative Plant Biology 2009年第4期51卷 337-351页

作者： Fitzgerald Booker Russell Muntifering Margaret McGrath kent Burkey Dennis Decoteau Edwin Fiscus William Manning Sagar Krupa Arthur Chappelka David Grantz United States Department of Agriculture-Agricultural Research Service Plant Science Research Unitand Department of Crop Science NorthCarolina State UniversityRaleigh North Carolina 27695 USA Department of Animal Sciences Auburn UniversityAuburn Alabama 36849 USA Department of Plant Pathology and Plant-Microbe Biology Long Island Horticultural Research Extension Center Cornell UniversityRiverheadNew York 11901 USA Department of Horticulture Pennsylvania State UniversityState College Pennsylvania 16802 USA Department of Plant Soil and Insect Sciences University of Massachusetts AmherstMassachusetts 01003 USA Department of Plant Pathology University of MinnesotaSt. Paul Minnesota 55108 USA School of Forestry and Wildlife Sciences Auburn UniversityAuburn Alabama 36849 USA Department of Botany and Plant Sciences University of CaliforniaRiverside California 92521 USA

The productivity, product quality and competitive ability of important agricultural and horticultural plants in many regions of the world may be adversely affected by current and anticipated concentrations of ground-level ozone （O_3）. Exposure to elevated O_3 typically results in suppressed photosynthesis, accelerated senescence, decreased growth and lower yields. Various approaches used to evaluate O_3 effects generally concur that current yield losses range from 5% to 15% among sensitive plants. There is, however, considerable genetic variability in plant responses to O_3.

关键词： climate change crop forage horticultural plant ozone product quality weedyield.

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COVER STORY

城市漫步（GBA版） 2014年第3期 36-43页

作者： TOM LEE JANE kent 不详

Finding Foshan Making a pilgrimage to Buddhist Hill Rich in history,traditional handicrafts and modern industry,Foshan is one of the Pearl River Delta's most fascinating ***,it is the third largest manufacturing hub in Guangdong after Guangzhou and Shenzhen and purports to have the largest wholesale furniture market in the entire world.

关键词： Pearl furniture Guangzhou