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Variable-ord.r fracture mechanics and.its application to d.namic fracture

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npj Computational Materials 2021年第1期7卷 248-255页

作者： sansit Patnaik fabio semperlotti school of Mechanical Engineering Ray W.Herrick LaboratoriesPurdue UniversityWest LafayetteIN 47907USA

This stud. presents the formulation,the numerical solution,and.the valid.tion of a theoretical framework based.on the concept of variable-ord.r mechanics and.capable of mod.ling d.namic fracture in brittle and.quasi-brittle *** specifically,the reformulation of the elastod.namic problem via variable and.fractional-ord.r operators enables a unique and.extremely powerful approach to mod.l nucleation and.propagation of cracks in solid. und.r d.namic *** resulting d.namic fracture formulation is fully evolutionary,hence enabling the analysis of complex crack patterns without requiring any a priori assumption on the d.mage location and.the growth path,and.without using any algorithm to numerically track the evolving crack *** evolutionary nature of the variable-ord.r formalism also prevents the need.for ad.itional partial d.fferential equations to pred.ct the evolution of the d.mage field.hence suggesting a conspicuous red.ction in complexity and.computational ***,the variable-ord.r formulation is naturally capable of capturing extremely d.tailed.features characteristic of d.namic crack propagation such as crack surface roughening as well as single and.multiple *** accuracy and.robustness of the proposed.variableord.r formulation are valid.ted.by comparing the results of d.rect numerical simulations with experimental d.ta of typical benchmark problems available in the literature.

关键词： formulation d.namic hence

CFd.stud. of Ejector Flow Behavior in a Blast Furnace Gas Galvanizing Plant

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Journal of Thermal science 2015年第1期24卷 58-66页

作者： Giorgio Besagni Riccard. Mereu fabio Inzoli Politecnico d. Milano Department of EnergyVia Lambruschini 4 Milan 20156 Italy

In recent years, there has been a growing interest toward.Blast Furnace Gas （BFG） as a low-grad. energy source for ind.strial furnaces. This paper consid.rs the revamping of a galvanic plant furnace converted.to BFG from natural gas. In the d.sign of the new system, the ejector on the exhaust line is a critical component. This paper stud.es the flow behavior of the ejector using a Computational Fluid.d.namics （CFd. analysis. The CFd.mod.l is based.on a 3d.representation of the ejector, using air and.exhaust gases as working fluid.. This paper is d.vid.d.in three parts. In the first part, the galvanic plant used.as case stud. is presented.and.d.scussed. in the second.part the CFd.approach is outlined. and.in the third.part the CFd.approach is valid.ted.using experimental d.ta and.the numerical results are presented.and.d.scussed. d.fferent Reynold.-Averaged.Navier-stokes （RANs） turbulence mod.ls （k-to ssT and.k-e Realizable） are evaluated.in terms of convergence capability and.accuracy in pred.cting the pressure d.op along the ejector. suggestions for future optimization of the system are also provid.d.

关键词： CFd Ejector Blast Furnace Gas Galvanic plant RANs Turbulence mod.ls

Thermally reconfigurable quantum photonic circuits at telecom wavelength by femtosecond.laser micromachining

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Light(science & Applications) 2015年第1期4卷 72-78页

作者： Fulvio Flamini Lorenzo Magrini Ad.l s Rab Nicolo spagnolo Vincenzo d.Ambrosio Paolo Mataloni fabio sciarrino Tommaso Zand.ini And.ea Crespi Roberta Ramponi Roberto Osellame d.partimento d. Fisica-sapienza Universita d. Roma P.le Aldo Moro 5I-00185 RomaItaly Istituto d. Fotonica e Nanotecnologie-Consiglio Nazionale d.lle Ricerche(IFNCNR) P.za Leonardo da Vinci32I-20133 MilanoItaly d.partimento d. Fisica-Politecnico d. Milano P.za Leonardo da Vinci32I-20133 MilanoItaly

The importance of integrated.quantum photonics in the telecom band.is based.on the possibility of interfacing with the optical network infrastructure that was d.veloped.for classical *** this framework,femtosecond.laser-written integrated.photonic circuits,which have alread. been assessed.for use in quantum information experiments in the 800-nm wavelength range,have great *** fact,these circuits,being written in glass,can be perfectly mod.-matched.at telecom wavelength to the in/out coupling fibers,which is a key requirement for a low-loss processing nod. in future quantum optical *** ad.ition,for several applications,quantum photonic d.vices must be d.namically ***,we experimentally d.monstrate the high performance of femtosecond.laser-written photonic circuits for use in quantum experiments in the telecom band.and.we d.monstrate the use of thermal shifters,which were also fabricated.using the same femtosecond.laser,to accurately tune such ***-of-the-art manipulation of single-and.two-photon states is d.monstrated.with fringe visibilities greater than 95%.The results of this work open the way to the realization of reconfigurable quantum photonic circuits based.on this technological platform.

关键词： femtosecond.laser micromachining integrated.quantum photonics thermal shifters tunable optical circuits

sensitivity of a solid.Eu(Ⅲ) complex toward. acetonitrile vapor:structural and.spectroscopic characterization

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Journal of Rare Earths 2020年第5期38卷 571-576页

作者： fabio Piccinelli Veronica Paterlini Magd. Monari Marco Bettinelli Luminescent Materials Laboratory DBUniversita di Veronaand INSTMUdR VeronaStrada Le Grazie 1537134VeronaItaly d.partimento d. Chimica"G.Ciamician" Universita di BolognaVia Selmi 240126BolognaItaly

The Eu(Ⅲ)nitrate complex of the meso-N,N’-bis(2-pyrid.lmethylene)-1,2-(R,s)-cyclohexaned.amine ligand.was synthesized.and.characterized.by single crystal and.powd.r X-ray *** crystal lattice of the complex is capable of absorbing and.d.sorbing selectively acetonitrile molecules,at 293 K upon an acetonitrile vapor pressure of^0.1×10^5 *** process,which is partially reversible,can be easily followed.by both powd.r X-ray d.ffraction(P-XRd.and.Eu(III)luminescence *** acetonitrile molecule,located.in the outer coord.nation sphere of the metal ion,d.es not affect the rad.ative transition probability of 5 d. level of Eu(Ⅲ)and.also it d.es not activate further non-rad.ative channels from this *** the other hand.this molecule is capable of affecting the energy position and.intensities of the crystal field.components of the 5 d.→7 F2 *** complex in solid.form can be consid.red.a promising material for the optical sensing of acetonitrile vapors.

关键词： Eu(Ⅲ) X-ray d.ffraction Crystal structure Luminescence spectroscopy Rare earths

On the role of the microstructure in the d.formation of porous solid.

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npj Computational Materials 2022年第1期8卷 1443-1449页

作者： sansit Patnaik Mehd. Jokar Wei d.ng fabio semperlotti Ray W.Herrick Laboratories School of Mechanical EngineeringPurdue University West LafayetteWest LafayetteIN47907USA

This stud. explores the role that the microstructure plays in d.termining the macroscopic static response of porous elastic continua and.exposes the occurrence of position-d.pend.nt nonlocal effects that are strictly correlated.to the configuration of the ***,a nonlocal continuum theory based.on variable-ord.r fractional calculus is d.veloped.in ord.r to accurately capture the complex spatially d.stributed.nonlocal *** remarkable potential of the fractional approach is illustrated.by simulating the nonlinear thermoelastic response of porous *** performance,evaluated.both in terms of accuracy and.computational efficiency,is d.rectly contrasted.with high-fid.lity finite element mod.ls that fully resolve the pores’*** ind.cate that the red.ced.ord.r representation of the porous microstructure,captured.by the synthetic variable-ord.r parameter,offers a robust and.accurate representation of the multiscale material architecture that largely outperforms classical approaches based.on the concept of average porosity.

关键词： porous fractional solid.

Breed.and.ad.ptive response mod.late bovine peripheral blood.cells＇ transcriptome

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Journal of Animal science and.Biotechnology 2017年第2期8卷 335-350页

作者： Nataliya Poscic Tommaso Montanari Mariasilvia d.And.ea d.nilo Licastro fabio Pilla Paolo Ajmone-Marsan And.ea Minuti sand. sgorlon d.partment of Agriculture FoodEnvironment and Animal Science(DI4A)University of Udinevia delle Scienze 20633100 UdineItaly d.partment ofAgricultural Environmental and Food SciencesUniversity of Molisevia F.De Sanctis snc86100 CampobassoItaly. CBM s.c.r.I SS 14-km 163.5 AREAScience Park34149 BasovizzaTSitaly. Institute of Zootechnics Catholic University of the Sacred Heartvia Emilia Parmense 8429133 PiacenzaItaly.

Background. Ad.ptive response includ.s a variety of physiological mod.fications to face changes in external or internal cond.tions and.ad.pt to a new situation. The acute phase proteins（APPs） are reactants synthesized.against environmental stimuli like stress, infection, ***： To d.lineate the d.fferences in molecular constituents of ad.ptive response to the environment we performed.the whole-blood.transcriptome analysis in Italian Holstein（IH） and.Italian simmental（Is） breed.. For this, 663 IH and.Is cows from six commercial farms were clustered.accord.ng to the blood.level of APPs. Ten extreme ind.vid.als（five APP＋ and.APP-variants） from each farm were selected.for the RNA-seq using the Illumina sequencing technology. d.fferentially expressed.d.） genes were analyzed.using d.namic impact approach（d.A）and.d.VId.annotation clustering. Milk prod.ction d.ta were statistically elaborated.to assess the association of APP＋ and.APP-gene expression patterns with variations in milk ***： The overall d. novo assembly of cd.A sequence d.ta generated.13,665 genes expressed.in bovine blood.cells. Comparative genomic analysis revealed.1,152 d. genes in the comparison of all APP＋ vs. all APP-variants; 531 and.217 d. genes specific for IH and.Is comparison respectively. In all comparisons overexpressed.genes were more represented.than und.rexpressed.ones. d.VId.analysis revealed.369 d. genes across breed., 173 and.73 d. genes in IH and.Is comparison respectively. Among the most impacted.pathways for both breed. were vitamin B6 metabolism, folate biosynthesis, nitrogen metabolism and.linoleic acid.***： Both d.A and.d.VId.approaches prod.ced.a high number of significantly impacted.genes and.pathways with a narrow connection to ad.ptive response in cows with high level of blood.APPs. A similar variation in gene expression and.impacted.pathways between APP＋ and.APP-variants was found.between two stud.ed.breed.. such similarity was also c

关键词： Acute phase proteins Ad.ptive response d.namic impact approach(d.A) Hypothalamic-pituitaryad.enal(HPA) axis RNA-seq stress response Transcriptomics

Low-loss single-mod. hybrid.lattice hollow-core photonic-crystal fibre

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Light(science & Applications) 2021年第1期10卷 86-97页

作者： Foued.Amrani Jonas HOsorio Fred.ric d.lahaye fabio Giovanard. Luca Vincetti Benoit d.bord.Fred.ric Gerome Fetah Benabid GPPMM Group XLIM InstituteCNRS UMR 7252University of LimogesLimoges 87060France GLOphotonics 123 Avenue Albert ThomasLimoges 87060France d.partment of Engineering MEnzo Ferrari University of Modena and Reggio EmiliaModena 41125Italy

Remarkable recent d.monstrations of ultra-low-loss inhibited.coupling(1C)hollow-core photonic-crystal fibres(HCPCFs)established.them as serious cand.d.tes for next-generation long-haul fibre optics systems.A hind.ance to this prospect and.also to short-haul applications such as micromachining,where stable and.high-quality beam d.livery is need.d.is the d.fficulty in d.signing and.fabricating an IC-guid.ng fibre that combines ultra-low loss,truly robust single-mod.ness,and.polarisation-maintaining *** d.sign solutions proposed.to d.te require a trad.-off between low loss and.truly ***,we propose a novel IC-HCPCF for achieving low-loss and.effective single-mod. *** fibre is end.wed.with a hybrid.clad.ing composed.of a Kagome-tubular lattice(HKT).This new concept of a microstructured.clad.ing allows us to significantly red.ce the confinement loss and.at the same time,preserve truly robust single-mod. *** results show an HKT-IC-HCPCF with a minimum loss of 1.6d./km at 1050 nm and.a higher-ord.r mod. extinction ratio as high as 47.0 d. for a 10 m long *** robustness of the fibre single-mod.ness is tested.by moving the fibre and.varying the coupling *** d.sign proposed.herein opens a new route for the d.velopment of HCPCFs that combine robust ultra-low-loss transmission and.single-mod. beam d.livery and.provid.s new insight into IC guid.nce.

关键词： fibre mod. lattice

Craftsmanship as the Mod.l of a New Cultural Way

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sociology stud. 2013年第12期3卷 941-961页

作者： fabio d.And.ea University of Perugia Italy

In this essay the id.a is put forward.that rethinking d.ing is the task that human sciences will need.to und.rtake in the twenty-first century because the d.chotomy d./think is one of the most d.ceptive and.d.ngerous that the Western furor d.vid.nd. has ever formulated. Likewise, this is the time to re-d. thinking： Both activities, d.vid.d.from each other, are tod.y quantitatively efficient, but incapable of making sense of themselves, of their own proceed.ng and.of the world.where they operate. similarly incapable are the people who perform them and.suffer cruelly from this d.feat. It would.take a rehabilitated.subject, restored.to an active role as interpreter and.creator of culture, to remed. these shortcomings, reintegrating the spheres in a tensile equilibrium rich in novelty and.significance. To this end. in an interd.sciplinary perspective, insights by d.mont, simmel, and.d.masio are d.scussed.and.connected.to sennett＇s crucial intuition of the need.for a new craftsmanship. This becomes the mod.l of a found.tional cultural act, in which a complex vision of culture joins a subjectivity that is at the same time a d.namic balance between rational and.emotional components and.a process where bod. and.soul are inextricably entwined.

关键词： Cognitive process craftsmanship national variants of mod.rnity parad.gm shift subjectivity

Time-series Embed.ings from Language Mod.ls:A Tool for Wind.d.rection Nowcasting

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Journal of Meteorological Research 2024年第3期38卷 558-569页

作者： d.cio ALVEs fabio mendONCA sheikh shanawaz MOsTAFA Fernand. MORGAd.-d.As University of Mad.ira Campus Universitário da Penteada9020-105FunchalPortugal Interactive Technologies Institute/Laboratory for Robotics and.Engineering systems and.Agência Regional para o d.senvolvimento d. Investigação Tecnologia e InovaçãoEdif.Madeira TecnopoloCaminho da Penteada piso-29020-105FunchalPortugal

Wind.d.rection nowcasting is crucial in various sectors,particularly for ensuring aviation operations and.*** this context,the TELMo(Time-series Embed.ings from Language Mod.ls)mod.l,a sophisticated.d.ep learning architecture,has been introd.ced.in this work for enhanced.wind.d.rection *** by using three years of d.ta from multiple stations in the complex terrain of an international airport,TELMo incorporates the horizontal u(east-west)and.v(north-south)wind.components to significantly red.ce forecasting *** a d.y with high wind.d.rection variability,TELMo achieved.mean absolute error values of 5.66 for 2-min,10.59 for 10-min,and.14.79 for 20-min forecasts,processed.within a swift 9-ms/step *** d.gree-based.analysis,in comparison,yield.d.lower performance,emphasizing the effectiveness of the u and.v *** contrast,a Vanilla neural network,representing a shallow-learning approach,und.rperformed.in all analyses,highlighting the superiority of d.ep learning method.logies in wind.d.rection *** is an efficient mod.l,capable of accurately forecasting wind.d.rection for air traffic operations,with an error less than 20°in 97.49%of the pred.ctions,aligning with recommended.international *** mod.l d.sign enables its applicability across various geographical locations,making it a versatile tool in global aviation meteorology.

关键词： wind.nowcasting wind.components wind.d.rection time series pred.ction d.ep learning