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Prediction of Forming Limit Diagrams for materials with HCP Structure

Acta metallurgica Sinica(English Letters) 2015年第12期28卷 1442-1451页

作者： Sheng-Hua Wu Nan-Nan Song Francisco m.Andrade Pires Abel D.santos Faculty of Engineering University of Porto INEGI University of Porto

The forming limit diagram（FLD） is an important tool to be used when characterizing the formability of metallic sheets used in metal forming processes. Experimental measurement and determination of the FLD is timeconsuming and therefore the analytical prediction based on theory of plasticity and instability criteria allows a direct and efficient methodology to obtain critical values at different loading paths, thus carrying significant practical ***, the accuracy of the plastic instability prediction is strongly dependent on the choice of the material constitutive model [1–3]. Particularly for materials with hexagonal close packed（HCP） crystallographic structure, they have a very limited number of active slip systems at room temperature and demonstrate a strong asymmetry between yielding in tension and compression [4, 5]. Not only the magnitude of the yield locus changes, but also the shape of the yield surface is evolving during the plastic deformation [4]. Conventional phenomenological constitutive models of plasticity fail to capture this unconventional mechanical behavior [4, 6]. Cazacu and Plunkett [6] have proposed generic yield criteria, by using the transformed principal stress, to account for the initial plastic anisotropy and strength differential（SD） effect simultaneously. In this contribution, a generic FLD mATLAB script was developed based on marciniak–Kuczynski analytical theory and applied to predict the localized necking. The influence of asymmetrical effect on the FLD was evaluated. Several yield functions such as von mises, Hill, Barlat89, and Cazacu06 were incorporated into analysis. The paper also presents and discusses the influence of different hardening laws on the formability of materials with HCP crystal structures. The findings indicate that the plastic instability theory coupled with Cazacu model can adequately predict the onset of localized necking for HCP materials under different strain paths.

关键词： Forming limit diagram(FLD) marciniak–Kuczynski analysis Plastic instability Yield function Hardening law

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Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli m.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik m.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot m. Ait Tamlihat B. Aitbenchikh I. Aizenberg m. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt m. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi m. Algren m. Alhroob B. Ali H.m.J. Ali S. Ali S.W. Alibocus m. Aliev G. Alimonti W. Alkakhi C. Allaire B.m.m. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani m. Alvarez Estevez A. Alvarez Fernandez m. Alves Cardoso m.G. Alviggi m. Aly Y. Amaral Coutinho A. Ambler C. Amelung m. Amerl C.G. Ames D. Amidei S.P. Amor Dos santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel m.T. Anthony E. Antipov m. Antonelli F. Anulli m. Aoki T. Aoki J.A. Aparisi Pozo m.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin m. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia m. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.m. Baldin P. Balek E. Ballabene F. Balli L.m. Baltes W.K. Balunas J. Balz E. Banas m. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak m. Barakat E.L. Barberio D. Barberis m. Barbero m.Z. Barel K.N. Barends T. Barillari m-S. Barisits T. Barklow P. Baron D.A. Baron mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARK GLUON TAGGING

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Distribution and Prevalence of Serotypes of Group B Streptococcus Isolated from Pregnant Women in 30 Countries:A Systematic Review

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maternal-Fetal medicine 2023年第2期5卷 97-103页

作者： marta maria Silva Érica Alcântara Silva Caline Novais Teixeira Oliveira maria Luísa Cordeiro santos Cláudio Lima Souza Fabrício Freire de melo márcio Vasconcelos Oliveira Instituto multidisciplinar em Saúde Universidade Federal da BahiaBahia 45.029-094Brazil

Objective:This review aimed to compile scientific data on the distribution and prevalence of group BStreptococcus (GBS) serotypes isolated from pregnant women across 30 countries from 2010 to ***:This was a systematic review that addresses the distribution and prevalence of GBS in pregnant *** search included studies published between January 2010 and December 2019 in Pubmed,Virtual Health Library (BVS),ScienceDirect,Scientific Electronic Library Online (SciELO),and LILACS *** also surveyed relevant articles published in English,Spanish,and Portuguese between February and April *** articles,communication,short report,theses,and dissertations were *** prevalence of GBS colonization,method for capsular serotyping,antimicrobial resistance,distribution and prevalence of serotypes were extracted from each ***:In all,795 publications were *** applying the eligibility criteria,48 articles were included for the final systematic analysis;most articles were from Asia and were published during the years 2014 to *** the identification of serotypes,most studies used the polymerase chain reaction *** were records of all 10 GBS serotypes,namely,Ia,Ib,and II–IX,among the countries *** susceptibility and resistance to antibiotics were addressed in 37.5% of the publications ***:This review showed that GBS serotypes are distributed differently in the 30 analyzed countries,with serotypes Ia,Ib,and II to V being the most ***,our results highlighted the relationship of GBS with maternal colonization,implications for neonates,and antibiotic resistance.

关键词： Streptococcus agalactiae Serotype Pregnant women

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Real drive cycles analysis by ordered power methodology applied to fuel consumption,C0_(2),NO_(x) and Pm emissions estimation

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Frontiers of Environmental Science & Engineering 2021年第1期15卷 77-90页

作者： Pol masclans Abello Vicente medina Iglesias m.Antonia de los santos Lopez Jesus Alvarez-Florez Center for Engines and Heat Installation Research(CREmIT-UPC).Universitat Politecnica de Catalunya-BarcelonaTech.Av.Diagonal 547(ETSEIB)08028 Barcelona Spain Department of Thermal machinery of Universitat Politecnica de Catalunya-BarcelonaTech and CREmIT-UPC.-BarcelonaTech.Av.Diagonal 547(ETSEIB)08028 Barcelona Spain 3 Department of mechanical Engineering of Universitat Politecnica de Catalunya-BarcelonaTech and CREmIT-UPC.-BarcelonaTech.Av.Diagonal 547(ETSEIB)08028 Barcelona Spain

In this work three fuel consumption and exhaust emission models,ADVISOR,VT-mICRO and the European Environmental Agency Emission factors,have been used to obtain fuel consumption(FC)and exhaust *** models have been used at micro-scale,using the two signal treatment methods *** manuscript presents:1)a methodology to collect data in real urban driving cycles,2)an estimation of FC and tailpipe emissions using some available models in literature,and 3)a novel analysis of the results based on delivered wheel *** results include Fuel Consumption(FC),CO_(2),NO_(x) and Pm_(10) emissions,which are derived from the three *** the first part of the paper we present a new procedure for incomplete drive cycle data treatment,which is necessary for real drive cycle acquisition in high density *** the models are used to obtain second by second FC and exhaust ***,a new methodology named Cycle Analysis by Ordered Power(CAbOP)is presented and used to compare the *** method consists in the re-ordering of time dependant data,considering the wheel mechanical power domain instead of the standard time *** new strategy allows the 5 situations in drive cycles to be clearly visualized:hard breaking zone,slowdowns,idle or stop zone,sustained speed zone and acceleration *** complete methodology is applied in two real drive cycles surveyed in Barcelona(Spain)and the results are compared with a standardized WLTC urban cycle.

关键词： Cycle Analysis by Ordered Power(CAbOP) micro and macro models Real drive cycle NO_(x)/Pm_(10)/CO_(2)emissions Wheel mechanical power domain Worldwide Harmonized Light-Duty Vehicles Test Cycle(WLTC)

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Analysis of 12 variants in the development of gastric and colorectal cancers

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World Journal of Gastroenterology 2017年第48期23卷 8533-8543页

作者： Giovanna C Cavalcante marcos AT Amador Andre m Ribeiro dos santos Darlen C Carvalho Roberta B Andrade Esdras EB Pereira marianne R Fernandes Danielle F Costa Ney PC santos Paulo P Assumpcao Andrea Ribeiro dos santos Sidney santos Laboratório de Genética Humana e médica Universidade Federal do Pará Núcleo de Pesquisas em Oncologia Universidade Federal do Pará

AIm To evaluate the relation between 12 polymorphisms and the development of gastric cancer(GC) and colorectal cancer(CRC).mETHODS In this study,we included 125 individuals with GC diagnosis,66 individuals with CRC diagnosis and 475 cancer-free individuals. All participants resided in the North region of Brazil and authorized the use of their samples. The 12 polymorphisms(in CASP8,CYP2 E1,CYP19 A1,IL1 A,IL4,mDm2,NFKB1,PAR1,TP53,TYmS,UGT1 A1 and XRCC1 genes) were genotyped in a single PCR for each individual,followed by fragment analysis. To avoid misinterpretation due to population substructure,we applied a previously developed set of 61 ancestryinformative markers that can also be genotyped by multiplex PCR. The statistical analyses were performed in Structure v.2.3.4,R environment and SPSS *** After statistical analyses with the control of confounding factors,such as genetic ancestry,three markers(rs79071878 in IL4,rs3730485 in mDm2 and rs28362491 in NFKB1) were positively associated with the development of GC. One of these markers(rs28362491) and the marker in the UGT1 A1 gene(rs8175347) were positively associated with the development of CRC. Therefore,we investigated whether the joint presence of the deleterious alleles of each marker could affect the development of cancer and we obtained positive results in all analyses. Carriers of the combination of alleles RP1 + DEL(rs79071878 and rs28361491,respectively) are at 10-times greater risk of developing GC than carriers of other combinations. Similarly,carriers of the combination of DEL + RARE(rs283628 and rs8175347) are at about 12-times greater risk of developing CRC than carriers of other *** These findings are important for the comprehension of gastric and CRC development,particularly in highly admixed populations,such as the Brazilian population.

关键词： Inflammatory processes Immune response Genomic and cellular stability Gastric cancer Colorectal cancer Amazon

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Numerical Investigation of a Refractive Index SPR D-Type Optical Fiber Sensor Using COmSOL multiphysics

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Photonic Sensors 2013年第1期3卷 61-66页

作者： D. F. santos A. GUERREIRO J. m. BAPTISTA Centro de Ciēncias Exatas e da Engenharia Universidade da Madeira Funchal Portugal Faculdade de Ciēncias da Universidade do Porto Portugal INESC TEC Porto Portugal

Recently, many programs have been developed for simulation or analysis of the different parameters of light propagation in optical fibers, either for sensing or for communication purposes. In this paper, it is shown the COmSOL multiphysics as a fairly robust and simple program, due to the existence of a graphical environment, to perform simulations with good accuracy. Results are compared with other simulation analysis, focusing on the surface plasmon resonance (SPR) phenomena for refractive index sensing in a D-type optical fiber, where the characteristics of the material layers, in terms of the type and thickness, and the residual fiber cladding thickness are optimized.

关键词：光纤传感器 SPR 折射率数值研究 D型软件表面等离子体共振仿真分析

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Use of improved cold-finger technique to assess effects of basicity on heat transfer through solidified mold flux

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Journal of Iron and Steel Research(International) 2019年第4期26卷 393-402页

作者： Karina Lara santos Assis Petrus Christiaan Pistorius Department of materials Science and Engineering Center for Iron and Steelmaking ResearchCarnegie Mellon UniversityPittsburgh 15213PAUSA

Cold-finger measurements were used to estimate the contact resistance and average thermal conductivity of mold flux films solidified on a water-cooled copper *** industrial mold fluxes,with basicities from low to high,were *** steady-state rate of convective heat transfer between the solid film and liquid flux was compared with calculations based on natural convection correlations;the comparison indicates that the surface of the solid film(in contact with molten flux)is approximately at its solidus *** roughness of the mold flux film in contact with copper was larger for films grown from higher-temperature mold flux and for higher-basicity mold *** glassy(low-basicity)film had an estimated thermal conductivity of 1.1 W/(m K).The crystalline or partially crystalline films had higher estimated thermal conductivities of 2.2-3.2 W/(m K).The measured values of thermal resistance were extrapolated to typical mold flux film thicknesses for industrial conditions;the extrapolations confirmed that the high contact resistance of higher-basicity mold fluxes can yield higher thermal resistances than the low-basicity *** morphology of the rough interface of higherbasicity mold flux films that gives the higher contact resistance is consistent with that observed in previous work and appears not to be directly related to crystallization.

关键词： mold flux Heat transfer Conduction Contact resistance-Cold-finger technique

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Nonlocal material properties of single-walled carbon nanotubes

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International Journal of Smart and Nano materials 2012年第2期3卷 141-151页

作者： J.V.Araújo dos santos C.m.mota Soares IDmEC Instituto Superior TécnicoUniversidade Técnica de Lisboa1049-001 LisboaPortugal

Natural frequencies of single-walled carbon nanotubes(SWCNTs)obtained using a model based on Eringen’s nonlocal continuum mechanics and the Timoshenko beam theory are compared with those obtained by molecular dynamics *** goal was to determine the values of the material constant,considered here as a nonlocal property,as a function of the length and the diameter of *** present approach has the advantage of eliminating the SWCNT thickness from the computations.A sensitivity analysis of natural frequencies to changes in the nonlocal material constant is also carried out and it shows that the influence of the nonlocal effects decreases with an increase in the SWCNT *** matching of natural frequencies shows that the nonlocal material constant varies with the natural frequency and the SWCNT length and diameter.

关键词： nonlocal mechanics molecular dynamics simulation single-walled carbon nanotube Timoshenko beam

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Novel nanocomposites based on a strawberry-like gold-coated magnetite （Fe@Au） for protein separation in multiple myeloma serum samples

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Nano Research 2015年第4期8卷 1189-1198页

作者： Jose E. Araujo Carlos Lodeiro Jose L. Capelo Benito Rodrfguez-Gonzalez Alcindo A. dos santos~ Hugo m. santos Javier Ferna.ndez-Lodeiro BIOSCOPE Research Group UCIBIO-REQUIMTE Department of Chemistry Faculty of Science and Technology University NOVA of Lisbon 2829-516 Caparica Portugal PROTEOmASS Scientific Society Madan Parque Rua dos Inventores 2825-182 Caparica Portuga Scientific and Technological Research Assistance Centre (CACTI) University of Vigo Vigo Spain Instituto de Quimica Universidade de Sao Paulo Av. Prof. Lineu Prestes 748 CxP 26077 Sao Paulo 05508-000 Brazil

在水的媒介生产与像草莓的金 nanoparticles 部分涂的磁铁矿的一个新过程被报导。对磁场和金基于 nanoparticle 的胶体的系统的光性质的快反应是这新 Fe@Au nanomaterial 的二个主要优点。这些优点允许为在 proteomics 和 biomedicine ... 详细信息

在水的媒介生产与像草莓的金 nanoparticles 部分涂的磁铁矿的一个新过程被报导。对磁场和金基于 nanoparticle 的胶体的系统的光性质的快反应是这新 Fe@Au nanomaterial 的二个主要优点。这些优点允许为在 proteomics 和 biomedicine 的各种各样的目的这新胶体的 nanomaterial 的使用当蛋白质能也绑在表面，和表面罐头，是 functionalized。作为 proof-of-concept，新 Fe@Au nanoparticles 为蛋白质的集中前和分离作为一个工具在 biomarker 发现被估计了从复杂 proteomes。到这个目的，从健康的人的 sera 与从与多重骨髓瘤诊断的病人的 sera 相比。与集体 spectrometry 相结合的这新 Fe@Au nanomaterial 的应用程序允许 53 的鉴定蛋白质，和它也证明了热吃惊蛋白质 HSP75 和血浆朊酶 C1 禁止者是为多重骨髓瘤前进的诊断和控制的潜在的 biomarkers。

关键词：蛋白质分离多发性骨髓瘤血清样品磁铁矿纳米复合材料镀金草莓金纳米粒子

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Investigation of possible relationship between atopic dermatitis and salivary biomarkers,stress,and sleep disorders

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World Journal of Clinical Cases 2023年第17期11卷 3958-3966页

作者： Juliany Estefan Dennis de Carvalho Ferreira Fernanda Sampaio Cavalcante Kátia Regina Netto dos santos marcia Ribeiro Dermatologia Pediátrica Universidade Federal do Rio de JaneiroRio de Janeiro 21941630Brazil Faculdade de Enfermagem Departamento de Fundamentos de EnfermagemUniversidade do Estado do Rio de JaneiroRio de Janeiro 20551030Brazil Departamento de Clínica médica Instituto de Ciências MédicasUniversidade Federal do Rio de JaneiroCampus MacaéRio de Janeiro 27930-560Brazil Departamento de microbiologia médica Instituto de Microbiologia Paulo de GóesUniversidade Federal do Rio de JaneiroRio de Janeiro 21941630Brazil Genética médica Instituto de Puericultura e Pediatria Martagão Gesteira/Universidade Federal do Rio de JaneiroRio de Janeiro 21941630Brazil

Atopic dermatitis(AD)is a chronic,relapsing,multifactorial inflammatory disease with genetic,environmental,and immunological *** quality of life and sleep of patients and their families are affected by AD,which triggers stress,described as one of the factors that worsens *** biomarkers such as cortisol,alpha-amylase,chromogranin A,and melatonin have been associated with stress and sleep ***,the evaluation of stress and sleep disorders using salivary biomarkers in AD patients is *** review aims to describe the possible relationship between atopic dermatitis and stress,sleep disorders,and salivary biomarkers,seeking to contribute to better understanding and clinical management of *** descriptive study is characterized as a narrative literature review.A literature search was conducted of studies published in English and Portuguese between January 2012 and October 2022 that are available in electronic media from various databases,such as Scientific Electronic Library Online,Latin American and Caribbean Literature on Health Sciences,and *** is associated with different degrees of impact on the lives of individuals who present with the *** stress may induce changes in saliva composition and worsen AD;at the same time,the severity of the disease may be associated with emotional *** studies are needed to assess and correlate AD severity,stress,and sleep disturbances with salivary biomarkers in order to better understand this association.

关键词： Atopic dermatitis Sleep Psychological stress Chromogranin A melatonin Cortisol

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