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Journal of.semiconductors 2024年第9期45卷 28-35页

作者： Leonarde N.Rodrigues Wesley f.Inoch marcos L.f.Gomes odilon D.D.Couto Jr. Bráulio s.Archanjo sukarno o.f.rreira Physics Department Federal University of ViçosaViçosa36570-900Minas GeraisBrazil Instituto de f.sica Gleb Wataghin Universidade Estadual de CampinasCampinas13083-859São PauloBrazil National Institute of.Metrology Quality and Technology(Inmetro) Materials Metrology Division(DIMAT)Xerém2525-020Rio de JaneiroBrazil

This work shows that despite a lattice mismatch of.almost 20%, CdMnTe/CdTe/CdMnTe heterostructures grown directly on si(111) have surprisingly good optical emission properties. The investigated structures were grown by molecular beam epitaxy and characterized by scanning transmission electron microscopy, macro-and micro-photoluminescence. Low temperature macro-photoluminescence experiments indicate three emission bands which depend on the CdTe layer thickness and have dif.erent conf.nement characteristics. Temperature measurements reveal that the lower energy emission band (at 1.48 eV)is associated to def.cts and bound exciton states, while the main emission at 1.61 eV has a weak 2D character and the higher energy one at 1.71 eV has a well-def.ned (zero-dimensional, 0D) 0D nature. Micro-photoluminescence measurements show the existence of.sharp and strongly circularly polarized (up to 40%) emission lines which can be related to the presence of.Mn in the heterostructure. This result opens the possibility of.producing photon sources with the typical spin control of.the diluted magnetic semiconductors using the low-cost silicon technology.

关键词： CdMnTe/CdTe/CdMnTe heterostructure CdTe/CdMnTe quantum emitters quantum dot-like emission silicon(111)substrate

Long CoVID: A Molecular, Cellular and Histopathology overview

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Journal of.Biosciences and Medicines 2023年第9期11卷 90-113页

作者： Bárbara Raf.ela da silva Barros Leonardo Carvalho de oliveira Cruz Georon f.rreira de sousa Guilherme Antonio souza-silva Marília R. C. f. de Lima Elif.ances G. oliveira Anna Jéssica Duarte silva Larissa s. Macêdo Lígia R. s. Leal bianca f. são marcos Carolina Elsztein Maria da Conceição V. Invenção Antonio Carlos de f.eitas Cristiane Moutinho-Melo Immunological and Antitumor Analysis Laboratory (LAIA) and Keizo Asami Immunopathology Laboratory Institute (iLIKA) Federal University of Pernambuco Recife Brazil Laboratory of.Neuroendocrinology and Metabolism Federal University of Pernambuco Recife Brazil Laboratory of.Molecular studies and Experimental Therapy Federal University of Pernambuco Recife Brazil

Long CoVID has been studied as dif.erent sequelae that some individuals can develop af.er the acute phase of.the disease. Persistent symptoms such as dry cough, f.tigue, and dyspnea can remain af.er six months of.CoVID-19 cure. others such as lung f.brosis, kidney injury, and thrombotic risk also are observed. Here, a deep review of.each human organ and system inf.cted by the virus was perf.rmed aiming to show how molecules expression and cell signaling can induce the organism cure or injuries and, subsequently sequelae. The review also suggests the importance of.public health surveillance f.r these cases including a more comprehensive analysis of.molecular biology tools that can clarif. and assist in the prognosis, treatment, and preventive methods f.r potentially more serious disorders in post-CoVID-19 patients.

关键词： Long CoVID CoVID-19 sequelae Public Health surveillance

Ef.icient f.delity estimation:alternative derivation and related applications

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Communications in Theoretical Physics 2024年第9期76卷 16-20页

作者： Diego s starke marcos L W Basso Jonas Maziero Physics Department Center for Natural and Exact SciencesFederal University of Santa MariaRoraima Avenue 1000Santa MariaRS97105-900Brazil Center f.r Natural and Human sciences Federal University of ABCAvenue of the StatesSanto AndréSão Paulo09210-580Brazil

In[***.A 107012427(2023)],Baldwin and Jones prove that Uhlmann–Jozsa’s f.delity between two quantum statesρandσ,i.e.,f.ρ,σ)=(Tr√√ρσ√ρ)^(2),can be written in a simplif.ed f.rm as f.ρ,σ)=(Tr√ρσ)^(2).In this article,we give an alternative proof.of.this result,using a f.nction power series expansion and the properties of.the trace *** approach not only reinf.rces the validity of.the simplif.ed expression but also f.cilitates the exploration of.novel dissimilarity f.nctions f.r quantum states and more complex trace f.nctions of.density operators.

关键词： Ulhmann–Jozsa f.delity Rényi entropy ef.icient f.delity estimation Chebyshev polynomials

Adsorption of.yttrium(Y^(3+)) and concentration of.rare earth elements f.om phosphogypsum using chitin and chitin aerogel

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Journal of.Rare Earths 2024年第4期42卷 775-782页

作者： Glaydson s.dos Reis Diana Pinto sabrina f.Lütke Eder C.Lima Luis f.o.silva Irineu A.s.De Brum Guilherme L.Dotto Department of.f.rest Biomaterials and Technology Biomass Technology Centre Swedish University of Agricultural SciencesUmeaE13Swedn Universidad De La Costa Calle 58#55-66080002BarranquillaAtlanticoColombia Research Group on Adsorptive and Catalytic Process Engineering(ENGEPAC) Federal University of Santa MariaAv.Roraima100079705900Santa MariaRSBrazil Institute of.Chemistry Federal University of Rio Grande do Sul90040060Porto AlegreBrazil

Chitin powder and chitin-aerogel were prepared f.om shrimp wastes and used to uptake Y^(3+)f.om aqueous solutions and concentrate this rare earth element f.om phosphogypsum(PG).Chitin aerogel displays a specif.c surf.ce area of.945 m^(2)/g,while chitin powder is 3.6 m^(2)/g,which largely inf.uences its adsorption *** the adsorption in synthetic solutions,the ef.ect of.pH on Y^(3+)removal is strong f.r chitin powder *** contrast,no big pH inf.uence was detected f.r chitin *** interactions and chelation can highlight the proposed mechanism of.Y^(3+)on chitin adsorbents f.r the powder and ***,in addition to these interactions,pore f.lling/pore dif.usion is the main mechanism of.Y^(3+)removal in the chitin *** aerogel is ef.icient in concentrating 8 times the Y^(3+)f.om PG,a very complex *** complex chitin aerogel-Y^(3+)can be a secondary source of.rare earth elements f.r other applications.

关键词： Rare earths sustainable material Chitin powder Chitin porous aerogel Yttrium adsorption and recovery

Benchmarks f.r Pirá2.0,a Reading Comprehension Dataset about the ocean,the Brazilian Coast,and Climate Change

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Data Intelligence 2024年第1期6卷 29-63页

作者： Paulo Pirozelli marcos M.José Igor silveira f.ávio Nakasato sarajane M.Peres Anarosa A.f.Brandão Anna H.R.Costa f.bio G.Cozman Universidade de são Paulo Ringgold standard Institution-Instituto de Estudos Avançados Av.370 São Paulo 05508-900Brazil Universidade de são Paulo Ringgold standard Institution-Instituto de Matemática e Estatística Av.370 São Paulo 05508-900Brazil Universidade de são Paulo Rua Cayowaá876 apto 141SÃO PAULO 05018-001Brazil Universidade de são Paulo Ringgold standard Institution Escola Politécnica Av.370São Paulo 05508-900Brazil.

Piráis a reading comprehension dataset f.cused on the ocean,the Brazilian coast,and climate change,built f.om a collection of.scientif.c abstracts and reports on these *** dataset represents a versatile language resource,particularly usef.l f.r testing the ability of.current machine learning models to acquire expert scientif.c *** its potential,a detailed set of.baselines has not yet been developed f.r Pirá.By creating these baselines,researchers can more easily utilize Piráas a resource f.r testing machine learning models across a wide range of.question answering *** this paper,we def.ne six benchmarks over the Pirádataset,covering closed generative question answering,machine reading comprehension,inf.rmation retrieval,open question answering,answer triggering,and multiple choice question *** part of.this ef.ort,we have also produced a curated version of.the original dataset,where we f.xed a number of.grammar issues,repetitions,and other ***,the dataset has been extended in several new directions,so as to f.ce the af.rementioned benchmarks:translation of.supporting texts f.om English into Portuguese,classif.cation labels f.r answerability,automatic paraphrases of.questions and answers,and multiple choice *** results described in this paper provide several points of.ref.rence f.r researchers interested in exploring the challenges provided by the Pirádataset.

关键词： Natural language processing Question answering Benchmarks Language resource Domainoriented dataset scientif.c knowledge text dataset

Glyphosate as a direct or indirect activator of.pro-inf.ammatory signaling and cognitive impairment

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Neural Regeneration Research 2024年第10期19卷 2212-2218页

作者： Yukitoshi Izumi Kazuko A.o'Dell Charles f.Zorumski Department of.Psychiatry Washington University School of MedicineSt.LouisMOUSA Taylor f.mily Institute f.r Innovative Psychiatric Research Washington University School of MedicineSt.LouisMOUSA

Glyphosate-based herbicides are widely used around the world, making it likely that most humans have signif.cant exposure. Because of.habitual exposure, there are concerns about toxicity including neurotoxicity that could result in neurological, psychiatric, or cognitive impairment. We recently f.und that a single injection of.glyphosate inhibits long-term potentiation, a cellular model of.learning and memory, in rat hippocampal slices dissected 1 day af.er injection, indicating that glyphosate-based herbicides can alter cognitive f.nction. Glyphosate-based herbicides could adversely af.ect cognitive f.nction either indirectly and/or directly. Indirectly, glyphosate could af.ect gut microbiota, and if.dysbiosis results in endotoxemia(leaky gut), inf.ltrated bacterial by-products such as lipopolysaccharides could activate pro-inf.ammatory cascades. Glyphosate can also directly trigger pro-inf.ammatory cascades. Indeed, we observed that acute glyphosate exposure inhibits long-term potentiation in rat hippocampal slices. Interestingly, direct inhibition of.long-term potentiation by glyphosate appears to be similar to that of.lipopolysaccharides. There are several possible measures to control dysbiosis and neuroinf.ammation caused by glyphosate. Dietary intake of.polyphenols, such as quercetin, which overcome the inhibitory ef.ect of.glyphosate on long-term potentiation, could be one ef.ective strategy. The aim of.this narrative review is to discuss possible mechanisms underlying neurotoxicity f.llowing glyphosate exposure as a means to identif. potential treatments.

关键词： cognitive impairment glyphosate microglia neuroinf.ammation roundup toll-like receptor 4 zinc chelation

Rotating ef.ects on the photoionization cross-section of.a 2D quantum ring

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Communications in Theoretical Physics 2024年第10期76卷 153-159页

作者： Carlos Magno o Pereira f.ankbelson dos s Azevedo Luís f.rnando C Pereira Edilberto o silva Departamento de f.sica Universidade Federal do Maranh?o

In this article, we investigate the nonrelativistic quantum motion of.a charged particle within a rotating f.ame, taking into account the Aharonov–Bohm(AB) ef.ect and a unif.rm magnetic f.eld. our analysis entails the derivation of.the equation of.motion and the corresponding radial equation to describe the system. solving the resulting radial equation enables us to determine the eigenvalues and eigenf.nctions, providing a clear expression f.r the energy levels. f.rthermore,our numerical analysis highlights the substantial inf.uence of.rotation on both energy levels and optical properties. specif.cally, we evaluate the photoionization cross-section with and without the ef.ects of.rotation. To elucidate the impact of.rotation on the photoionization process of.the system, we present graphics that of.er an appealing visualization of.the intrinsic nature of.the physics involved.

关键词： Aharonov-Bohm ef.ect photoionization cross-section quantum ring rotating ef.ect

Transf.rmer f.r the Design of.Automatic Control systems with Pref.lters

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World Journal of.Engineering and Technology 2024年第3期12卷 575-586页

作者： Isaac Hughes John f. o’Brien Department of.Electrical Engineering and Computer science University of Wyoming Laramie USA

A machine learning model, using the transf.rmer architecture, is used to design a f.edback compensator and pref.lter f.r various simulated plants. The output of.the transf.rmer is a sequence of.compensator and pref.lter parameters. The compensator and pref.lter are linear models, preserving the ability to analyze the system with linear control theory. The input to the network is a window of.recent ref.rence and output samples. The goal of.the transf.rmer is to minimize tracking error at each time step. The plants under consideration range f.om simple to challenging. The more dif.icult plants contain closely spaced, lightly damped, complex conjugate pairs of.poles and zeros. Results are compared to PID controllers tuned f.r a similar crossover f.equency and optimal phase margin. f.r simple plants, the transf.rmer converges to solutions which overly rely on the pref.lter, neglecting the maximization of.negative f.edback. f.r more complex plants, the transf.rmer designs a compensator and pref.lter with more desirable qualities. In all cases, the transf.rmer can start with random model parameters and modif. them to minimize tracking error on the step ref.rence.

关键词： f.edback Machine Learning Compensator Design

Immune response to inactivated bacterial vector carrying the recombinant K39 antigen of.Leishmania inf.ntum in mice

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Asian Pacif.c Journal of.Tropical Biomedicine 2024年第5期14卷 199-206页

作者： Lucelina s.Araújo Bruno B.silva Eduarda N.f.N.santos Arnaldo s.Bezerra samuel s.f.ota Assis R.Montenegro Eridan o.P.T.f.orean Maurício f.an Tilburg Maria Izabel f.Guedes Laboratory of.Biotechnology and Molecular Biology Northeast Biotechnology NetworkState University of CearáFortalezaBrazil f.culty of.Veterinary Medicine State University of CearáFortalezaBrazil

objective:To evaluate the immunological response elicited by an inactivated bacterial vector carrying the K39 antigen of.Leishmania inf.ntum,and a purif.ed ***:Mice were subjected to the f.llowing treatments:(1)Purif.ed recombinant K39(rK39)protein at a 20μg dose with complete f.eund’s adjuvant;(2)Inactivated Escherichia coli(BL21 DE3)carrying the K39 protein at an equivalent total protein content of.200μg;(3)Inactivated bacteria lacking the K39 protein;(4)Non-immunized control *** monitoring was *** groups were challenged by intraperitoneal injection of.10^(7) Leishmania inf.ntum *** euthanasia,the liver and spleen were collected to analyze the levels of.TNf.If.-γ,IL-12,IL-4,and ***:Mice immunized with purif.ed rK39 or the inactivated bacterial vector carrying the K39 antigen of.Leishmania inf.ntum showed a long-lasting immune response with high levels of.polyclonal antibodies specif.cally recognizing the recombinant *** IgG1 subclass was the predominant immunoglobulin;however,the induction of.IgG2a and the prof.le of.cytokines produced were indicative of.the induction of.a mixed-type ***:The inactivated bacterial vector carrying the K39 antigen,as well as the purif.ed antigen can induce a long-lasting immune response in immunized mice,predominantly f.vouring a Th2 prof.le response.

关键词： Visceral leishmaniasis K39 Inactivated bacterial vector Vaccine Immune response Th1 Th2 Leishmania inf.ntum

Thermo-kinetic characteristics on stabilizing hetero-phase interf.ce of.metal matrix composites by crystal plasticity f.nite element method

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Journal of.Materials science & Technology 2024年第2期169卷 53-67页

作者： Y.B.Zhang s.J.song f.Liu state Key Laboratory of.solidif.cation Processing Northwestern Polytechnical UniversityXi’an 710072China Analytical&Testing Center Northwestern Polytechnical UniversityXi’an 710072China

Using dislocation-based constitutive modeling in three-dimension crystal plasticity f.nite element(3D CPf.)simulations,co-def.rmation and instability of.hetero-phase interf.ce in dif.erent material systems were herein studied f.r polycrystalline metal matrix composites(MMCs).Local stress and strain f.elds in two types of.3layer MMCs such as f.c/f.c Cu-Ag and f.c/bcc Cu-Nb have been predicted under simple compressive ***,more severe strain-induced interf.ce instability can be observed in the f.c/bcc systems than in the f.c/f.c systems upon ref.ning to metallic nanolayered composites(MNCs).By detailed analysis of.stress and strain localization,it has been demonstrated that the interf.ce instability is always accompanied by high-stress concentration,i.e.,thermodynamic characteristics,or high strain prevention i.e.,kinetic characteristics,at the hetero-phase *** then f.llows that the thermodynamic driving f.rceG and the kinetic energy barrier Q during dislocation and shear banding can be adopted to classif. the def.rmation modes,f.llowing the so-called thermo-kinetic *** by inserting a high density of.high-energy interf.ces into the Cu-Nb composites,such thermo-kinetic integration at the hetero-phase interf.ce allows a successf.l establishment of.MMCs with the high△G-high Q def.rmation mode,which ensures high hardening and unif.rm strain distri-bution,thus ef.iciently suppressing the shear band,stabilizing the hetero-phase interf.ce,and obtaining an exceptional combination in strength and *** hetero-phase interf.ce chosen by a couple of.thermodynamics and kinetics can be def.ned as breaking the thermo-kinetic correlation and has been proposed f.r artif.cially designing MNCs.

关键词： Thermodynamics and kinetics Physics-based constitutive modeling Hetero-phase interf.ce Crystal plasticity f.nite element