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Effect of Thermo-Mechanical Processing on Precipitate Formation in Next Generation HsLA steel

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Journal of Iron and steel Research(International) 2011年第S1期18卷 478-481页

作者： Mukherjee s Timokhina I B Ringer s P Hodgson P D Centre for Material and Fibre Innovation Deakin UniversityGeelongVic 3217Australia Australian Key Centre for Microscopy and Microanalysis University of SydneyNSWAustralia

Development of advanced high strength steels (AHss) using a conventional rolling setup is one of the biggest challenges to steel *** has been found that fine precipitation in a soft matrix,formed after hot rolling,can markedly improve the mechanical *** this work,three dimensional atom probe tomography (3D-APT) has been used to study the formation of precipitates in thermomechanically simulated steel.3D-APT data reveals co-existence of numerous nano clusters with ***,quantitative analysis of the nano clusters and precipitates shows clusters are as small as 1nm in *** are found to be disc shaped with the composition of equilibrium precipitates (TiMo)***,3D-APT is seen as an ideal technique to complement TEM to understand the nanoscale features in thermomechanically processed steel for further improvements in the mechanical properties of AHss.

关键词： TMCP 3D-APT precipitate cluster

There is life after coking for Ir nanocatalyst superlattices

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Nano Research 2022年第8期15卷 6969-6976页

作者： Antonio J.Martínez-Galera Haojie Guo Mariano D.Jiménez-sánchez stefano Franchi Kevin C.Prince José M.Gómez-Rodríguez Departamento de Física de la Materia Condensada Universidad Autónoma de MadridMadrid E-28049Spain Instituto Nicolás Cabrera Universidad Autónoma de MadridMadrid E-28049Spain Elettra-sincrotrone Trieste s.C.p.A. in Area Science ParkBasovizza(Trieste)34149Italy Condensed Matter Physics Center(IFIMAC) Universidad Autónoma de MadridMadrid E-28049Spain

Achieving superior performance of nanoparticle systems is one of the biggest challenges in *** major phenomena,occurring during the reactions,hinder the development of the full potential of nanoparticle catalysts:sintering and contamination with carbon containing species,sometimes called ***,we demonstrate that Ir nanocrystals,arranged into periodic networks on hexagonal boron nitride(h-BN)supports,can be restored without sintering after contamination by persistent *** restoration yields the complete removal of carbon from the nanocrystals,which keep their crystalline structure,allowing operation without *** findings,together with the possibility of fine tuning the nanocrystals size,confer this nanoparticle system a great potential as a testbed to extract key information about catalysis-mediated oxidation *** the case of the CO oxidation by O2,reaction of interest in environmental science and green energy production,the existence of chemical processes not observed before in other nanoparticle systems is demonstrated.

关键词： catalysis coke nanoparticles scanning tunneling microscopy(sTM) X-ray photoemission spectroscopy(XPs)

Observation of Zitterbewegung in photonic microcavities

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Light(science & Applications) 2023年第6期12卷 1084-1090页

作者： seth Lovett Paul M.Walker Alexey Osipov Alexey Yulin Pooja Uday Naik Charles E.Whittaker Ivan A.shelykh Maurice s.skolnick Dmitry N.Krizhanovskii Department of Physics and Astronomy University of SheffieldS37RH SheffieldUK Department of Physics and Technology ITMO UniversitySt.Petersburg 197101Russia science Institute University of IcelandDunhagi 3IS-107 ReykjavikIceland

We present and experimentally study the effects of the photonic spin–orbit coupling on the real space propagation of polariton wavepackets in planar semiconductor microcavities and polaritonic analogues of *** particular,we demonstrate the appearance of an analogue Zitterbewegung effect,a term which translates as‘trembling motion’in English,which was originally proposed for relativistic Dirac electrons and consisted of the oscillations of the centre of mass of a wavepacket in the direction perpendicular to its *** a planar microcavity,we observe regular Zitterbewegung oscillations whose amplitude and period depend on the wavevector of the *** then extend these results to a honeycomb lattice of coupled microcavity *** to the planar cavity,such lattices are inherently more tuneable and versatile,allowing simulation of the Hamiltonians of a wide range of important physical *** observe an oscillation pattern related to the presence of the spin-split Dirac cones in the *** both cases,the experimentally observed oscillations are in good agreement with theoretical modelling and independently measured bandstructure parameters,providing strong evidence for the observation of Zitterbewegung.

关键词： planar versatile analogues

An angle-insensitive electromagnetic absorber enabling a wideband absorption

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Journal of Materials science & Technology 2022年第18期113卷 33-39页

作者： Zhichao Lou Qiuyi Wang Xiaodi Zhou Ufuoma I.Kara Rajdeep s.Mamtani Hualiang Lv Meng Zhang Zhihong Yang Yanjun Li Chenxuan Wang solomon Adera Xiaoguang Wang Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China Willian G.Lowrie Department of Chemical and Biomolecular Engineering The Ohio State UniversityColumbusOH43210United States of America Institute of Materials Research and Engineering Agency for SciencesTechnology and ResearchSingapore state Key Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijing 100005China Department of Mechanical Engineering University of MichiganAnn ArborMI48109United States of America sustainability Institute The Ohio State UniversityColumbusOH43210United States of America school of Materials science and Engineering Henan University of Science and TechnologyLuoyang 471023China

Electromagnetic(EM)wave absorbers with wideband absorption capability are proposed as a strategy to mitigate environmental pollution by EM ***,designing an EM absorber with its performance capacity independent of the EM wave incident angle remains elusive to *** this challenge requires development of EM absorbers whose EM absorption performance is insensitive to the EM wave incident ***,we synthesized EM absorbers with a variety of structures with different symme-tries(including micro-/nanospheres,nanoflakes and nanotubes)to study the effect of the EM absorbers’structure and the EM wave incident angle on the EM absorption *** analysis reveals that non-magnetic EM absorbers with spatially symmetric nanostructures exhibit excellent EM wave incident ***,we demonstrate that a class of non-magnetic EM absorbers made from bam-boo derived-carbon nanospheres exhibit EM incident angle-insensitivity and wideband EM absorption performance with an effective absorption band up to 3.5 GHz when the thickness is 1.4 mm,a signif-icant improvement from prior studies which used thicknesses as high as 3-4 mm for comparable EM absorption performance.

关键词： Nanostructure Angle-insensitive EM absorption Biomass derived carbon Wideband

Hearing loss due to urate deposition in the middle ear:A case report and literature review

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Journal of Otology 2022年第1期17卷 50-53页

作者： M.Hoste M.Cabri-Wiltzer s.Hassid J.-C.Degols J.Vilain ENT and Head and Neck surgery Department Clinique Saint PierreOttigniesBelgium Department of Radiology Clinique Saint PierreOttigniesBelgium ENT and Head and Neck surgery Department CHU UCLNamenBelgium

Gout is the most common cause of monoarthritis in men occurring classically in the great toe and the ***-articular gout manifestations are *** a few cases of head and neck urate crystals deposits have been described in the *** in the middle ear cause conductive hearing loss with common otoscopic anomalies and difficult imaging *** report a case of a healthy 58-years-old man with a middle ear urate deposit causing a progressive hearing loss as the very first symptom of *** nature of the deposit was unsure on computer tomography(CT)due to atypical *** final diagnosis was revealed after surgical procedure and histologic examination.A review of the literature is also *** cases of middle ear urate deposit as the first symptom of gout were found and *** conductive hearing loss in middle-aged patients with abnormal otoscopy and middle ear atypical density mass on CT scan must lead to a minimal surgical procedure with a histologic examination to exclude urate crystals deposits.

关键词： Hearing loss Urate deposit Gout Middle ear Otoscopy

The EsCRT protein CHMP5 escorts αβ T cells through positive selection

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Cellular & Molecular Immunology 2018年第7期15卷 654-656页

作者： Glendon s Wu Craig H Bassing Immunology Graduate Group Perelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA 19104USA Divsion of Cancer Pathobiology Department of Pathology and Laboratory MedicineChildren’s Hospital of PhiladelphiaAbramson Family Cancer Research InstitutePerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA 19104USA

αβ T lymphocytes are critical for host protection against pathogens and are notable for their recent use as immunotherapeutic agents for the treatment of human ***,their dysfunction is associated with a variety of disease states,including autoimmune and immunodeficient syndromes that frequently result from improper αβT cell development in the *** thymic egress,mature αβ T cells are activated when their surface T-cell receptor(TCR)engages peptide antigens displayed by major histocompatibility complex(MHC)proteins expressed on antigenpresenting *** the thymus,each developing αβ T cell(thymocyte)recombines its TCRβ and TCRαgenes in an attempt to assemble and express a unique functional αβ TCR。

关键词： lymphocytes autoimmune combine

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解决一维材料黏附行为的实验方法综述

Engineering 2023年第5期24卷 39-72,I0001,I0002页

作者： James L.Mead shiliang Wang sören Zimmermann sergej Fatikow Han Huang Department of Computing science University of OldenburgOldenburg D-26129Germany school of Physics and Electronics Central South UniversityChangsha 410083China school of Mechanical and Mining Engineering The University of QueenslandBrisbaneQLD 4072Australia

一维(1D)材料(如纳米管和纳米线)的黏附行为在集成一维组件的新型器件以及基于一维阵列的仿生黏合剂的有效制造、功能和可靠性中起着决定性作用。本文汇编并批判性地评估了最近的实验技术,旨在表征由一维材料形成的界面的粘附行为(包括... 详细信息

一维(1D)材料(如纳米管和纳米线)的黏附行为在集成一维组件的新型器件以及基于一维阵列的仿生黏合剂的有效制造、功能和可靠性中起着决定性作用。本文汇编并批判性地评估了最近的实验技术,旨在表征由一维材料形成的界面的粘附行为(包括当这些材料与衬底或邻近的一维材料接触时)。讨论了一维材料与表面的构象以及与之相关的多粗糙度接触的发生,并探讨了界面附着和剥离过程中黏附和摩擦的耦合。考虑了一维材料作为增强剂在纳米复合材料中的应用以及相关的界面表征技术。研究了样品制备和黏附测试过程中存在的环境条件对一维界面相互作用的潜在影响,并最终改变了一维材料的粘附行为。最后,简要介绍了当前的挑战和未来的方向,包括测试环境的系统调查和通过表面改性改变附着力。

关键词：一维材料纳米复合材料一维阵列界面相互作用样品制备表面改性新型器件增强剂

Escherichia coli O157:H7 sepsis following fecal microbiota transplant in an IgA-deficient inflammatory bowel disease patient

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Gastroenterology Report 2022年第1期10卷 609-611页

作者： Landen s.Burstiner Jared silver Logan J.Burstiner Arian Teymoorian Kumar Pallav Demarre Jones Anna Owings sarah Glover Nova southeastern University Dr.Kiran C.Patel College of Osteopathic Medicine DavieFLUSA Department of Gastroenterology University of Mississippi Medical CenterJacksonMSUSA Department of Medicine Division of RheumatologyImmunologyand AllergyBrigham and Women’s HospitalHarvard Medical SchoolBostonMAUSA Department of Medicine Memorial Healthcare SystemHollywoodFLUSA Department of Gastroenterology GI Associates&Endoscopy CenterFlowoodMSUSA

Introduction Clostridioides difficile infection(CDI)is a common gastrointestinal illness worldwide,with increased prevalence and worse outcomes in patients with inflammatory bowel disease(IBD)[1].Fecal microbiota transplant(FMT)is an effective treatment for recurrent CDIs(RCDIs)with minimal serious adverse events(sAEs)reported[2].While immunosuppressive medications increase susceptibility to infections,studies have shown that FMT does not increase sAE risk in immunocompromised patients(including IBD patients on immunosuppressive therapy)[3].

关键词： O157:H7 inflammatory patients

Production of 150 cm wide AZ31 magnesium sheet by twin roll casting

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中国有色金属学会会刊：英文版 2008年第A1期18卷 185-188页

作者： A.A.KAYA O.DUYGULU s.UCUNCUOGLU G.OKTAY D.s.TEMUR O.YUCEL Materials Institute TUBITAK MRCGebzeKocaeli 41470Turkey Engineering Faculty Department of Metallurgy and MaterialsMugla UniversityKotekliMugla 48000Turkey Department of Metallurgical and Materials Engineering Istanbul Technical UniversityIstanbul 34469Turkey

150 cm wide AZ31 magnesium alloy sheet was produced by twin roll *** sheets of 6 mm thickness were cast. The sheet material was characterized using various techniques including metallography and *** mechanical properties were investigated by tensile tests and hardness *** procedures were developed for thermomechanical treatment of cast sheet *** products of these procedures were characterized and the results were discussed for possible potential applications.

关键词： AZ31镁合金微弧氧化膜电化学腐蚀性能三维数值模拟