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Medical implants by using RP and investment casting technologies

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China Foundry 2011年第1期8卷 107-111页

作者： Milan Horáek Ondej Charvát Tomá Pavelka Josef Sedlák martin Madaj Jindich Nejedl Jan Dvoáek Faculty of Mechanical Engineering Institute of Manufacturing Technology-Department of Foundry EngineeringBrno University of Technology

The paper deals with the production technology of knee joint replacement by using rapid prototyping *** aim of the work is to outline the manufacturing technology intended for prototype production with the use of rapid prototyping and investment casting technology for use in orthopaedics and the surgery of knee joint *** research results should make an effective contribution in the attempts to minimize the invasive surgical procedure,shorten the production of knee joint replacement as well as reduce the *** present,the research is focused on the preparation of STL data from CT (Computed Tomography) and verification of the production technology of prototypes made using available RP technology and its evaluation.

关键词：快速的原型扔的投资膝关节代替计算断层摄影术

GaAs/AlGaAs heterostructure nanowires studied by cathodoluminescence

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Nano Research 2014年第4期7卷 473-490页

作者： Jessica Bolinsson martin ek Johanna Tragardh Kilian Mergenthaler Daniel Jacobsson Mats-Erik Pistol Lars Samuelson Anders Gustafsson Solid State Physics and the Nanometer Structure Consortium Lund University Box 118 SE-221 00 Lund Sweden Polymer and Materials Chemistry Lund University Box 124 SE-221 00 Lund Sweden

In this report we explore the structural and optical properties of GaAs/AlGaAs heterostructure nanowires grown by metalorganic vapour phase epitaxy using gold seed-particles. The optical studies were done by low-temperature cathodoluminescence (CL) in a scanning electron microscope (SEM). We perform a systematic investigation of how the nanowire growth-temperature affects the total photon emission, and variations in the emission energy and intensity along the length of the nanowires. The morphology and crystal structures of the nanowires were investigated using SEM and transmission electron microscopy (TEM). In order to correlate specific photon emission characteristics with variations in the nanowire crystal structure directly, TEM and spatially resolved CL measurements were performed on the same individual nanowires. We found that the main emission energy was located at around 1.48 eV, and that the emission intensity was greatly enhanced when increasing the GaAs nanowire core growth temperature. The data strongly suggests that this emission energy is related to rotational twins in the GaAs nanowire core. Our measurements also show that radial overgrowth by GaAs on the GaAs nanowire core can have a deteriorating effect on the optical quality of the nanowires. Finally, we conclude that an in situ pre-growth annealing step at a sufficiently high temperature significantly improves the optical quality of the nanowires.

关键词：异质结构纳米线阴极发光砷化镓扫描电子显微镜透射电子显微镜 GaAs 气相外延生长

In Situ Etching for Total Control Over Axial and Radial Nanowire Growth

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Nano Research 2010年第4期3卷 264-270页

作者： Magnus T.Borgström Jesper Wallentin Johanna Trägårdh Peter Ramvall martin ek LReine Wallenberg Lars Samuelson Knut Deppert Solid State Physics Lund UniversityBox 118S-22100LundSweden Polymer&Materials Chemistry/nCHREM Lund UniversityS-22100 LundSweden H.H.Wills Physics Laboratory University of BristolTyndall AvenueBristol BS81TLUnited Kingdom

We report a method using in situ etching to decouple the axial from the radial nanowire growth pathway,independent of other growth *** a wide range of growth parameters can be explored to improve the nanowire properties without concern of tapering or excess structural defects formed during radial *** demonstrate the method using etching by HCl during InP nanowire *** improved crystal quality of etched nanowires is indicated by strongly enhanced photoluminescence as compared to reference nanowires obtained without etching.

关键词： MOVPE nanowire growth in situ etching photoluminescence

Valence Band Splitting in Wurtzite InP Nanowires Observed by Photoluminescence and Photoluminescence Excitation Spectroscopy

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Nano Research 2011年第2期4卷 159-163页

作者： Gerben L. Tuin Magnus T. Borgstrom Johanna Tragardh martin ek L. Reine Wallenberg Lars Samuelson Mats-Erik Pistol Solid State Physics/Nanometer Structure Consortium Box 118 Lund University S-221 00 Lund Sweden Polymer ＆ Materials Chemistry/nCHREM Lund University S-22100 Lurid Sweden

我们用光致发光，光致发光刺激光谱学和传播电子显微镜学调查了 wurtzite InP 的单个像体积的电线。用二个不同方法，我们发现原子价乐队的顶被切开，理论上期望。这切开原子价乐队对 wurtzite InP 古怪并且不发生在锌闪锌矿 InP。我们... 详细信息

我们用光致发光，光致发光刺激光谱学和传播电子显微镜学调查了 wurtzite InP 的单个像体积的电线。用二个不同方法，我们发现原子价乐队的顶被切开，理论上期望。这切开原子价乐队对 wurtzite InP 古怪并且不发生在锌闪锌矿 InP。我们发现二个乐队之间的精力差别是 40 兆电子伏。

关键词：光致发光激发光谱纤锌矿结构 InP 分裂价带纳米线透射电子显微镜闪锌矿

Words apart:Standardizing forestry terms and definitions across European biodiversity studies

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森林生态系统:英文版 2023年第4期10卷 459-471页

作者： Giovanni Trentanovi Thomas Campagnaro Tommaso Sitzia Francesco Chianucci Giorgio Vacchiano Christian Ammer MichałCiach Thomas ANagel Miren del Río Yoan Paillet Silvana Munzi Kris Vandekerkhove Andrés Bravo-Oviedo Andrea Cutini Ettore D'Andrea Pallieter De Smedt Inken Doerfler Dimitris Fotakis Jacob Heilmann-Clausen Jeňýk Hofmeister Jan Hošek Philippe Janssen Sebastian Kepfer-Rojas Nathalie Korboulewsky Bence Kovács Daniel Kozák Thibault Lachat Anders Mårell Radim Matula martin Mikoláš Björn Nordén PéterÓdor x Marko Perović Elisabeth Pötzelsberger Peter Schall Miroslav Svoboda Flóra Tinya Mariana Ujházyová Sabina Burrascano Research Institute on Terrestrial Ecosystems-National Research Council(IRET-CNR) Via Madonna Del Piano 1950019Sesto FiorentinoFIItaly Department of Land EnvironmentAgriculture and ForestryUniversitàdegli Studi di PadovaViale Dell’Università1635020LegnaroPDItaly National Biodiversity Future Center Piazza Marina 6190133PalermoItaly CREA Research Centre for Forestry and Wood Viale S.Margherita 8052100ArezzoItaly Department of Agricultural and Environmental Sciences(DISAA) University of MilanVia Celoria 220133MilanItaly Silviculture and Forest Ecology of the Temperate Zones University of GöttingenGermany Department of Forest Biodiversity Faculty of ForestryUniversity of Agricultureal.29 Listopada 4631-425KrakówPoland Department of Forestry and Renewable Forest Resources Biotechnical FacultyUniversity of LjubljanaVecna pot 831000LjubljanaSlovenia Instituto de Ciencias Forestales(ICIFOR-INIA) CSICCtra.de la Coruña Km 7.528040MadridSpain University Grenoble Alpes LessemINRAE2 Rue de la Papeterie38402 Saint-Martin-d'HèresFrance Centro Interuniversitário de História Das Ciências e da Tecnologia Faculdade de CiênciasUniversidade de LisboaPortugal Centre for Ecology Evolution and Environmental ChangesFaculdade de Ciências&CHANGE-Global Change and Sustainability InstituteUniversidade de LisboaPortugal Research Institute for Nature and Forest(INBO) Havenlaan 88 Bus 731000BrusselBelgium Department of Biogeography and Global Change National Museum of Natural Sciences-CSICC/Serrano 115bis28006MadridSpain Research Institute on Terrestrial Ecosystems-National Research Council(IRET-CNR) Via G.Marconi N.205010PoranoTRItaly Forest&Nature Lab Department of EnvironmentGhent UniversityGeraardsbergsesteenweg 2679090GontrodeBelgium Institute of Biology and Environmental Science Vegetation Science&Nature ConservationUniversity of OldenburgAmmerländer Heerstraße 114-11826129OldenburgGermany Forest Research Institute Hellenic Agricultural Organization DimitraVassilikaThessal

Forest biodiversity studies conducted across Europe use a multitude of forestry terms,often *** hinders the comparability across studies and makes the assessment of the impacts of forest management on biodiversity highly *** attempts to standardize forestry and stand description terminology mostly used a top-down approach that did not account for the perspectives and approaches of forest biodiversity *** work aims to establish common standards for silvicultural and vegetation definitions,creating a shared conceptual framework for a consistent study on the effects of forest management on *** have identified both strengths and weaknesses of the silvicultural and vegetation information provided in forest biodiversity *** quantitative data on forest biomass and dominant tree species are frequently included,information on silvicultural activities and vegetation composition is often lacking,shallow,or based on broad and heterogeneous *** discuss the existing classifications and their use in European forest biodiversity studies through a novel bottom-up and top-driven review process,and ultimately propose a common *** will enhance the comparability of forest biodiversity studies in Europe,and puts the basis for effective implementation and monitoring of sustainable forest management *** standards here proposed are potentially adaptable and applicable to other geographical areas and could be extended to other forest interventions.

关键词： Forest management Multi-taxon Terminology Silviculture Data harmonization

Periodic surface functional group density on graphene via laserinduced substrate patterning at Si/SiO2 interface

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Nano Research 2020年第9期13卷 2332-2339页

作者： Karolina A.Drogowska-Horna Inam Mirza Alvaro Rodriguez Petr Kovaricek Juraj Sladek Thibault J.-Y.Derrien Mindaugas Gedvilas Gediminas Raciukaitis Otakar Frank Nadezhda M.Bulgakova martin Kalbac J.Heyrovsky Institute of Physical Chemistry of the Czech Academy of Sciences Dolejskova 2155/318223 PragueCzech Republic HiLASE Centre Institute of Physics of the Czech Academy of SciencesZa Radnict 82825241 Dolni BrezanyCzech Republic Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in PragueBrehova 78/711519Czech Republic Center for Physical Sciences and Technology Savanoriu Ave.231LT-023000VilniusLithuania

Controlling the spatial distribution of functional groups on two-dimensional(2D)materials on a micrometer scale and below represents a fascinating opportunity to achieve anisotropic(opto)electronic properties of these *** patterns of covalent functionalization can lead to pericxJic potentials in the monolayer;however,creating such superstructures is very ***,we describe an original approach to the periodic functionalization of graphene induced by substrate patterning using a pulsed ***-induced periodic surface structures(LIPSS)are produced on silicon wafers with thermally-grown oxide *** irradiation conditions for the formation of UPSS confined at the SiO2/Si interface have been *** imprint their periodicity to the reactivity of the monolayer graphene placed on the substrate via modulation of its local doping *** method is clean,straightforward and scalable with high spatial resolution.

关键词： two-dimensional(2D)materials graphene functionalization laser-induced periodic surface structures(LIPSS) periodic patterns Raman spectroscopy atomic force microscopy(AFM)

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Political System

Journal of Philosophy Study 2020年第5期10卷 312-314页

作者： martin Vlček eFunctionality Non-profit Research GroupPragueCzech Republic

Based on an analogy with more advanced development systems and using the results of model work on economic objects,a dichotomy of society management is *** terminology is used—normal and dark *** matter,*** observable,economically controllable and interconnected part of society,is built next to dark matter,which is controlled by the satisfaction of *** some simplification,it is called a political *** decisive factor for it is the complete absence of ties to the economy—financial *** the contrary,its essence is the evaluation of the distribution of satisfaction among citizens and,on the basis of that,the design and regulation through the laws of activity of normal matter—the *** considerations suggest that dark matter in society is not just a euphemism,but that there is an ever closer connection with the astronomical dark matter as *** is also connected with the management of satisfaction—***—but in other systems.

关键词： dark matter normal matter parliament satisfaction money

Cavity-assisted ultrafast long-range periodic energy transfer between plasmonic nanoantennas

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Light(Science & Applications) 2017年第1期6卷 144-149页

作者： martin Aeschlimann Tobias Brixner Mirko Cinchetti Benjamin Frisch Bert Hecht Matthias Hensen Bernhard Huber Christian Kramer Enno Krauss Thomas H Loeber Walter Pfeiffer martin Piecuch Philip Thielen Fachbereich Physik and Research Center OPTIMAS University of KaiserslauternErwin-Schrödinger-Str.46Kaiserslautern 67663Germany Institut für Physikalische und Theoretische Chemie Universität WürzburgAm HublandWürzburg 97074Germany Röntgen Research Center for Complex Material Systems(RCCM) Universität WürzburgAm HublandWürzburg 97074Germany Experimentelle Physik VI Fakultät PhysikTechnische Universität DortmundDortmund 44221Germany Nano‐Optics and Bio‐Photonics Group Department of Experimental Physics 5Universität WürzburgAm HublandWürzburg 97074Germany Fakultät für Physik Universität BielefeldUniversitätsstr.25Bielefeld 33615Germany Nano Structuring Centre and Research Center OPTIMAS Erwin-Schrödinger-Str.13Kaiserslautern 67663Germany Graduate School of Excellence Materials Science in Mainz Gottlieb-Daimler-Str.47Kaiserslautern 67663Germany

Radiationless energy transfer is at the core of diverse phenomena,such as light harvesting in photosynthesis1,energy-transfer-based microspectroscopies2,nanoscale quantum entanglement3 and photonic-mode ***,the transfer is efficient only for separations that are much shorter than the diffraction *** hampers its application in optical communication and quantum information processing,which require spatially selective ***,we demonstrate highly efficient radiationless coherent energy transfer over a distance of twice the excitation wavelength by combining localized and delocalized5 plasmonic *** to the Tavis–Cummings model,two whispering-gallery-mode antennas6 placed in the foci of an elliptical plasmonic cavity7 fabricated from single-crystal gold plates act as a pair of oscillators coupled to a common cavity ***-resolved two-photon photoemission electron microscopy(TR 2P-PEEM)reveals an ultrafast long-range periodic energy transfer in accordance with the *** observations open perspectives for the optimization and tailoring of mesoscopic energy transfer and long-range quantum emitter coupling.

关键词： transfer periodic quantum

水滑石基钴铜催化剂中钴的碳化在高碳醇合成中的作用

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Chinese Journal of Catalysis 2019年第11期40卷 1731-1740页

作者： Janine Nebel Stefan Schmidt Qiushi Pan Katrin Lotz Stefan Kaluza martin Muhler 波鸿鲁尔大学工业化学实验室德国波鸿44780 弗劳恩霍夫环境安全与能源技术研究所德国奥伯豪森46047

Co-Cu基催化剂广泛用于合成气制高碳醇反应(HAS)中.尽管很难从本质上完全理解催化剂的活性位,但是在HAS条件下生成的Co2C对反应的贡献是显而易见的.开发了CO预处理工艺,系统地研究了钴的碳化对催化剂结构性能和催化性能的影响.通过在HA... 详细信息

Co-Cu基催化剂广泛用于合成气制高碳醇反应(HAS)中.尽管很难从本质上完全理解催化剂的活性位,但是在HAS条件下生成的Co2C对反应的贡献是显而易见的.开发了CO预处理工艺,系统地研究了钴的碳化对催化剂结构性能和催化性能的影响.通过在HAS反应之前将催化剂暴露在含CO的气氛中,催化剂表面发生Co的富集,然后形成碳化物.这种表面改性减少了烃类的形成,促进了C2+OH的形成.催化剂经20 bar下CO预处理后,乙醇选择性最高,烃类选择性最低.

关键词：高碳醇合成 Co-Cu催化剂碳化钴 CO预处理