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Journal of Modern Physics 2018年第5期9卷 976-984页

作者： Etienne Urbain Guillaume Garreau Patrick Wetzel Samy Boukari Eric Beaurepaire martin bowen Wolfgang Weber Université de Strasbourg CNRS Institut de Physique et Chimie des Matériaux de Strasbourg Strasbourg France Université de Haute-Alsace CNRS Institut de Science des Matériaux de Mulhouse Mulhouse France

The influence of a Co or phthalocyanine (Pc) molecular overlayer on the properties of quantum-well resonances (QWR) in Cu layers atop Co(001) is studied by means of spin-polarized electron reflection. For Co atoms and Pc molecules, an energy shift of the QWR-induced signal is observed with increasing coverage and is attributed to a variation of the electron reflection phase at the Cu/Co and Cu/Pc interface. For Co we find a linear energy shift in the Cu QWR energy position with increasing coverage down to the sub-monolayer regime. This shows that the phase accumulation model remains accurate within the sub-monolayer regime of a discontinuous interface. An opposite sign in the energy shift between Co and Pc overlayers could reflect an opposite impact on the Cu surface work function of overlayer adsorption.

关键词： Quantum-Well Resonances Spin-Polarized Electron Reflection

Thermal activation of Ti_((1-x))Au_((x))thin films with enhanced hardness and biocompatibility

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Bioactive Materials 2022年第9期7卷 426-445页

作者： Cecil Cherian Lukose Ioannis Anestopoulos Theodora Mantso Leon bowen Mihalis I.Panayiotidis martin Birkett Department of Mechanical and Construction Engineering Northumbria UniversityNewcastle Upon TyneUK Department of Cancer Genetics Therapeutics&Ultrastructural PathologyThe Cyprus Institute of Neurology and GeneticsNicosiaCyprus The Cyprus School of Molecular Medicine The Cyprus Institute of Neurology and GeneticsNicosiaCyprus Department of Applied Sciences Northumbria UniversityNewcastle Upon TyneUK Department of Physics G.J.Russell Microscopy FacilityDurham UniversityDurhamUK

The lifetime of orthopaedic implants can be extended by coating the softer Ti6Al4V alloy with harder biocompatible thin *** this work,thin films of Ti_((1-x))Au_((x))are grown on Ti_(6)Al_(4)V and glass substrates by magnetron sputtering in the entire x=0-1 range,before their key biomechanical properties are performance tuned by thermal *** the first time,we explore the effect of in-situ substrate heating versus ex-situ post-deposition heat-treatment,on development of mechanical and biocompatibility performance in Ti-Au films.A~250% increase in hardness is achieved for Ti-Au films compared to bulk Ti6Al4V and a~40%improvement from 8.8 GPa as-grown to 11.9 and 12.3 GPa with in-situ and ex-situ heat-treatment respectively,is corelated to changes in structural,morphological and chemical properties,providing insights into the origins of super-hardness in the Ti rich regions of these materials.X-ray diffraction reveals that as-grown films are in nanocrystalline states of Ti-Au intermetallic phases and thermal activation leads to emergence of mechanically hard Ti-Au intermetallics,with films prepared by in-situ substrate heating having enhanced crystalline *** morphology images show clear changes in grain size,shape and surface roughness following thermal activation,while elemental analysis reveals that in-situ substrate heating is better for development of oxide free Ti3Auβ-*** tested Ti-Au films are non-cytotoxic against L929 mouse fibroblast cells,while extremely low leached ion concentrations confirm their *** peak hardness performance tuned to>12 GPa and excellent biocompatibility,Ti-Au films have potential as a future coating technology for load bearing medical implants.

关键词： Ti-Au thin film coating Hardness Biocompatible L929 mouse fibroblast Implants

Inverse design of low boom configurations using proper orthogonal decomposition and augmented Burgers equation

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Chinese Journal of Aeronautics 2019年第6期32卷 1380-1389页

作者： Yidian ZHANG Jiangtao HUANG Zhenghong GAO Chao WANG bowen SHU School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China Computational Aerodynamics Institute China Aerodynamics Research and Development CenterMianyang 621000China

Mitigation of sonic boom to an acceptable stage is a key point for the next generation of supersonic transports. Meanwhile, designing a supersonic aircraft with an ideal ground signature is always the focus of research on sonic boom reduction. This paper presents an inverse design approach to optimize the near-field signature of an aircraft, making it close to the shaped ideal ground signature after the propagation in the atmosphere. Using the Proper Orthogonal Decomposition(POD) method, a guessed input of augmented Burgers equation is inversely achieved. By multiple POD iterations, the guessed ground signatures successively approach the target ground signature until the convergence criteria is reached. Finally, the corresponding equivalent area distribution is calculated from the optimal near-field signature through the classical Whitham F-function theory. To validate this method, an optimization example of Lockheed martin 1021 is demonstrated. The modified configuration has a fully shaped ground signature and achieves a drop of perceived loudness by 7.94 PLdB. This improvement is achieved via shaping the original near-field signature into wiggles and damping it by atmospheric attenuation. At last, a nonphysical ground signature is set as the target to test the robustness of this inverse design method and shows that this method is robust enough for various inputs.

关键词： Aeroacoustics Augmented Burgers equation Low boom configuration Optimization Supersonic aerodynamics

Tetrahymena Gene Expression Database (TGED):A resource of microarray data and co-expression analyses for Tetrahymena

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Science China(Life Sciences) 2011年第1期54卷 65-67页

作者： XIONG Jie LU XingYi LU YuMing ZENG HongHui YUAN DongXia FENG LiFang CHANG Yue Josephine bowen martin GOROVSKY FU ChengJie MIAO Wei Key Laboratory of Aquatic Biodiversity and Conservation Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China Department of Biology University of Rochester Rochester NY 14627 USA Graduate University of Chinese Academy of Sciences Beijing 100049 China

Tetrahymena thermophila is a model eukaryotic organism. Functional genomic analyses in Tetrahymena present rich opportunities to address fundamental questions of cell and molecular biology. The Tetrahymena Gene Expression Database (TGED; available at http://***) is the first expression database of a ciliated protozoan. It covers three major physiological and developmental states: growth, starvation, and conjugation, and can be accessed through a user-friendly web interface. The gene expression profiles and candidate co-expressed genes for each gene can be retrieved using Gene ID or Gene description searches. Descriptions of standardized methods of sample preparation and the opportunity to add new Tetrahymena microarray data will be of great interest to the Tetrahymena research community. TGED is intended to be a resource for all members of the scientific research community who are interested in Tetrahymena and other ciliates.

关键词： Tetrahymena thermophila gene expression database co-expression

Coal mine roof rating(CMRR),rock mass rating(RMR)and strata control:Carborough Downs Mine,bowen Basin,Australia

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International Journal of Mining Science and Technology 2020年第2期30卷 225-234页

作者： martin Brook Bruce Hebblewhite Rudrajit Mitra School of Environment University of AucklandAuckland 1010New Zealand School of Mining Engineering University of New South WalesNSW 2052Australia School of Mining Engineering University of the WitwatersrandJohannesburg 2050South Africa

The rock mass rating(RMR)has been used across the geotechnical industry for half a *** contrast,the coal mine roof rating(CMRR)was specifically introduced to underground coal mines two decades ago to link geological characterization with geotechnical risk *** premise of CMRR is that strength properties of mine roof rock are influenced by defects typical of coal measures *** CMRR has been used in longwall pillar design,roof support methods,and evaluation of extended cuts,but is rarely ***,the RMR and CMRR are applied to a longwall coal *** rock mass classifications were undertaken at 67 locations across the *** classifications showed marked spatial variability in terms of roof *** and reverse faulting occur across the mine,and while no clear relationships exist between rock mass character and faulting,a central graben zone showed heterogeneous rock mass properties,and divergence between CMRR and ***,the CMRR data fell within the broad envelope of results reported for extended cuts at Australian and *** *** corollary is that the CMRR is useful,and should not be used in isolation,but rather as a component of a strata control programme.

关键词： Rock mass classification Roof strength Coal mine CMRR RMR bowen Basin

Mineralogical Characterization of Kuru Cassiterite Ore by SEM-EDS,XRD and ICP Techniques

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Journal of Minerals and Materials Characterization and Engineering 2011年第9期10卷 855-863页

作者： martin Ogwuegbu Gerald Onyedika Jiann-Yang Hwang Asuwaji Ayuk Zhiwei Peng bowen Li Ejike E.N.O. Matt Andriese Department of Chemistry Federal University of TechnologyP.M.B. 1526 Owerri Nigeria. Materials Science and Engineering Michigan Technological University 1400 Townsend Dr. Houghton Michigan U.S.A.

The morphology and elemental characteristics of Kuru Cassiterite ore deposit was performed by the combination of different instruments. This is vital to obtain accurate mineralogical, surface properties and compositions of the ore. Mineral particles were prepared on epoxy resin, polished and analyzed by a SEM coupled with an EDS. X- ray diffraction showed that the ore contained different minerals of cassiterite, coffinite, siderophyllite,ilmenite, qartz, rutile, manganocolumbite, zircon, tilleyite and monazite. Further quantitative analysis using inductive coupled plasma – optical emission spectrometry gave the elemental analysis as follows;Sn (28.0%), Si (5.5%), Fe (5.16%),Ti (3.51%), Al (2.48%), Y (1.06%), and Nb (2.53%). The other trace elements found include Mn, K, Na, Mg, La, Ce, U and Ca. The ICP-OES data was correlated with the XRD data obtained using the Guassian Pro 8.1 origin software and it showed significant correlation.

关键词： Cassiterite Mineral phase ore characterization

四膜虫基因表达数据库:四膜虫全基因组基因表达芯片和协同表达分析的数据资源

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中国科学：生命科学 2010年第12期40卷 1087-1089页

作者：熊杰陆星亦陆钰明曾宏辉袁冬霞冯立芳畅悦 bowen Josephine GOROVSKY martin 傅诚杰缪炜中国科学院水生生物研究所水生生物多样性与保护重点实验室武汉430072 中国科学院研究生院北京100049 Department of Biology University of Rochester 中国科学院水生生物研究所淡水生态与生物技术国家重点实验室武汉430072

嗜热四膜虫是一种优良的真核模式生物,对其功能基因组学的分析将为研究细胞和分子生物学的基础性重大问题提供新的机遇.四膜虫基因表达数据库(TGED)是原生动物纤毛虫中第一个基因表达数据库,整个数据库包括了四膜虫3个重要的生理和发育... 详细信息

嗜热四膜虫是一种优良的真核模式生物,对其功能基因组学的分析将为研究细胞和分子生物学的基础性重大问题提供新的机遇.四膜虫基因表达数据库(TGED)是原生动物纤毛虫中第一个基因表达数据库,整个数据库包括了四膜虫3个重要的生理和发育阶段20个时间点的全基因组基因表达数据,提供了友好的网页界面(http://***)供用户获取这些数据.通过基因的标识号或描述信息,用户可以获取基因表达谱信息和协同表达基因.此外,TGED同时提供了制备四膜虫基因表达芯片的样品制备方法.欢迎研究者上传和分享其所有的基因芯片数据,以期为四膜虫或纤毛虫研究提供重要的功能基因组学资源.

关键词：嗜热四膜虫基因表达数据库协同表达

浅析我国“一带一路”战略构想的新闻语篇对话性

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鸡西大学学报（综合版） 2017年第1期17卷 133-138页

作者：魏博文李春姬大连外国语大学英语学院辽宁大连116044 大连外国语大学汉学院辽宁大连116044

依据习近平同志提出的"一带一路"战略构想,选取《中国日报》中文网中该领域的20篇新闻文本为研究语料,依托martin评价理论的介入系统分支框架,以定量法探寻新闻文本的介入资源分布规律,以定性法解读文本传递的立场及隐性的对话空间。结... 详细信息

依据习近平同志提出的"一带一路"战略构想,选取《中国日报》中文网中该领域的20篇新闻文本为研究语料,依托martin评价理论的介入系统分支框架,以定量法探寻新闻文本的介入资源分布规律,以定性法解读文本传递的立场及隐性的对话空间。结果表明,对话扩展资源明显高于对话收缩资源,"承认"介入资源比例最大,说明说话者有意扩大对话空间,新闻文本的构建模式趋向于多维度的动态传播,对话扩展内在资源分配增进了新闻语篇的对话效果。

关键词：评价理论介入系统对话性中国的外交