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Journal of Plant Ecology 2020年第4期13卷 423-430页

作者： Cássio Cardoso Pereira Maria Gabriela Boaventura gislene carvalho de castro Tatiana Cornelissen departamento de Genética Ecologia e EvoluçãoUniversidade Federal de Minas Gerais31270-910 Belo HorizonteMGBrazil departamento de Ciências Naturais Universidade Federal de São João del-Rei36301-160 São João del-ReiMGBrazil

植物用于防御的资源有限,而那些具有生物防御的物种,其叶片可能会较少地用于其他类型的防御。我们比较了机械防御能力较弱,但具有花外蜜腺的植物,与没有花外蜜腺但叶片更有韧性的植物是否更不容易被取食。我们通过分析文献数据,调查有... 详细信息

植物用于防御的资源有限,而那些具有生物防御的物种,其叶片可能会较少地用于其他类型的防御。我们比较了机械防御能力较弱,但具有花外蜜腺的植物,与没有花外蜜腺但叶片更有韧性的植物是否更不容易被取食。我们通过分析文献数据,调查有无花外蜜腺的植物被取食的情况。在巴西南部的热带稀树草原植被中,我们采集了6种热带植物的叶片数据,并测定了被取食情况和比叶面积。我们进一步评估了有无花外蜜腺的物种之间以及植物之间被取食情况和比叶面积的差异。为了检验动物取食与叶片韧性之间的关系,我们对单株平均被取食情况和平均叶片韧性进行了回归。研究结果表明,植物表现出不同程度的叶片损伤,但没有蚂蚁防御的植物因被取食造成的叶面积损失最大。不同植物的机械防御水平也不相同。无花外蜜腺的植株更坚韧,比叶面积值更小。虽然无花外蜜腺的植物有更多的坚硬叶片,但这种机械防御不足以损害和/或减少食草动物的取食,这表明由蚂蚁形成的生物防御可能比用于与叶片适口性相关的机械防御更有效。

关键词：蚂蚁生物防御动物取食叶片适口性比叶面积

Review on the state-of-the-art and challenges in the MgB_(2)component manufacturing for superconducting applications

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Superconductivity 2024年第1期9卷 50-64页

作者： Fabiano carvalho de castro Sene department of Industrial and Systems Engineering University of TennesseeKnoxvilleUnited States

Since the discovery of MgB_(2)as a superconductor,several research groups worldwide have studied the superconducting mechanisms due to the dual gap nature of MgB_(2),as well as attempted to produce such a compound in wires,tapes,bulks,and thin films for a plethora of *** MgB_(2)carries the promise of replacing Niobium‐based superconductors in low‐field applications,less‐than‐desirable performance and in‐operation stability has slowed down such a *** the properties and nature of the superconductivity of MgB_(2)are fairly known,the reproduction of its properties at manufacturing scales remains an unsolved ***,this manuscript presents a systematic review on fundamental properties,phase formation,growth kinetics,and superconducting properties of MgB_(2)‐based components such as multi‐and mono‐core wires,bulks,and thin ***,challenges,and shortcomings are utilized in consolidating research questions and directions pertaining to the manufacturing of MgB_(2)superconducting ***,we evaluate the technological readiness of MgB_(2)‐based devices for applications in fusion energy systems.

关键词： MgB_(2) Superconductor manufacturing Technology readiness Review Low‐Field applications

design multifunctional Mg–Zr coatings regulating Mg alloy bioabsorption

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Journal of Magnesium and Alloys 2024年第4期12卷 1461-1478页

作者： Zohra Benzarti Sandesh Itani JoséDavid castro Sandra carvalho Ana Sofia Ramos University of Coimbra CEMMPREARISEDepartment of Mechanical EngineeringRua Luís Reis Santos3030-788CoimbraPortugal Laboratory of Multifunctional Materials and Applications(LaMMA) Department of PhysicsFaculty of Sciences of SfaxUniversity of SfaxSoukra Road km 3.5B.P.1171Sfax3000Tunisia

Magnesium(Mg)alloys are widely used for temporary bone implants due to their favorable biodegradability,cytocompatibility,hemocompatibility,and close mechanical properties to ***,rapid degradation and inadequate strength limit their *** overcome this,the direct current magnetron sputtering technique is employed for surface coating in Mg-based alloys using various zirconium(Zr)*** approach presents a promising strategy for simultaneously improving corrosion resistance,maintaining biocompatibility,and enhancing strength without compromising *** leveraging Mg’s inherent biodegradability,it has the potential to minimize the need for secondary surgeries,thereby reducing costs and *** paper is a systematic study aimed at understanding the corrosion mechanisms of Mg–Zr coatings,denoted Mg-xZr(x=0–5 at.%).Zr-doped coatings exhibited columnar growth leading to denser and refined structures with increasing Zr *** analysis confirmed the presence of the Mg(00.2)basal plane,shifting towards higher angles(1.15°)with 5 at.%Zr doping due to lattice parameter changes(i.e.,decrease and increase of“c”and“a”lattice parameters,respectively).Mg–Zr coatings exhibited“liquidphilic”behavior,while Young’s modulus retained a steady value around 80 GPa across all ***,the hardness has significantly improved across all samples’coating,reaching the highest value of(2.2±0.3)GPa for 5 at.%*** testing in simulated body fluid(SBF)at 37℃ revealed a significant enhancement in corrosion resistance for Mg–Zr coatings containing 1.0–3.4 at.%*** with the 5 at.%Zr coating which exhibited a corrosion rate of 32 mm/year,these coatings displayed lower corrosion rates,ranging from 1 to 12 mm/*** synergistic enhancement in mechanical properties and corrosion resistance,achieved with 2.0–3.4 at.%Zr,suggests potential ability for reducing stress shielding and controlled degradation performance,and consequentl

关键词： Mg-Zr coatings Magnetron sputtering Nanoindentation Corrosion resistance Bone implants

Seasonal variation and host sex affect bat–bat fly interaction networks in the Amazonian savannahs

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Integrative Zoology 2024年第3期19卷 400-416页

作者： Paulo MEJIA Gustavo Lima URBIETA Bruna da Silva XAVIER IsaíJorge de castro JoséJúlio de TOLEDO Gustavo GRACIOLLI Lucio AndréVIANA DIAS William Douglas carvalho Programa de Pós-Graduação em Biodiversidade Tropical Universidade Federal do Amapá(UNIFAP)MacapáAPBrazil Programa de Pós-Graduação em Ecologia Instituto de BiologiaCentro de Ciências da SaúdeUniversidade Federal do Rio de Janeiro(UFRJ)Rio de JaneiroRJBrazil Laboratório de Mamíferos Instituto de Pesquisas Científicas e Tecnológicas do Estado do Amapá(IEPA)MacapáAPBrazil Programa de Pós-Graduação em Biologia Animal Laboratório de SistemáticaEcologia e Evolução(LSEE)Instituto de BiociênciasUniversidade Federal de Mato Grosso do Sul(UFMS)Campo GrandeMTBrazil Terrestrial Ecology Group(TEG-UAM) Departamento de EcologíaFacultad de CienciasUniversidad Autónoma de MadridMadridSpain Centro de Investigación en Biodiversidad y Cambio Global(CIBC-UAM) Universidad Autónoma de MadridMadridSpain

Bats are the second-most diverse group of mammals in the world,and bat flies are their main ***,significant knowledge gaps remain regarding these antagonistic interactions,especially since diverse factors such as seasonality and host sex can affect their network ***,we explore the influence of such factors by comparing species richness and composition of bat flies on host bats,as well as specialization and modularity of bat–bat fly interaction networks between seasons and adult host *** captured bats and collected their ectoparasitic flies at 10 sampling sites in the savannahs of AmapáState,northeastern region of the Brazilian *** female bats being more parasitized and recording greater bat fly species richness in the wet season,neither relationship was statistically *** pooled network could be divided into 15 compartments with 54 links,and all subnetworks comprised>12 *** total number of links ranged from 27 to 48(for the dry and wet seasons,respectively),and female and male subnetworks had 44 and 41 links,*** values were very low for the pooled network and for all *** results revealed higher bat fly species richness and abundance in the wet season,whereas specialization and modularity were higher in the dry ***,the subnetwork for female bats displayed higher specialization and modularity than the male ***,both seasonality and host sex contribute in different ways to bat–bat fly network *** studies should consider these factors when evaluating bat–bat fly interaction networks.

关键词： Amapá Amazon biome bat flies bats interaction networks

delay Times and Clinical Outcomes in Acute Myocardial Infarction: Comparison of Periods before and during the COVID-19 Pandemic—Myocardial Infarction and the Pandemic

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World Journal of Cardiovascular Diseases 2024年第6期14卷 392-400页

作者： Clarice Teixeira Silva Araújo Arnon Salviato Mameri Thúlio Carrera Guarçoni Venturini Marcus Tadeu Aguilar Constantino Matos Igor Morais Araujo Lopes Luiz Gustavo Ribeiro de carvalho Murad Cleberson Duartes Ovani Guilherme Vassalo Morais Fernanda Venturini de castro Danielle Lopes Rocha Lucas Crespo de Barros Rodolfo Costa Sylvestre Luiz Fernando Machado Barbosa Roberto Ramos Barbosa Internal Medicine Universidade Federal do Esprito Santo (UFES) Vitria Brazil Hospital Santa Casa de Misericrdia de Vitria Vitria Brazil Hospital Santa Rita de Cssia Vitria Brazil Hospital Estadual Dr. Jayme Santos Neves Serra Brazil Grupo Kora Sade Vitria Brazil Hospital Estadual Infantil e Maternidade Alzir Bernardino Alves (HIMABA) Vila Velha Brazil

Introduction: At the beginning of the COVID-19 pandemic, a drop in the number of patients treated for cardiac emergencies raised concern about cardiovascular mortality in that period. An increase in care delay for patients with ST-segment elevation myocardial infarction (STEMI) may have affected clinical outcomes. Objectives: To analyze delay times and clinical outcomes of patients with STEMI undergoing primary percutaneous coronary intervention (PPCI), before and during the COVID-19 pandemic. Methods: Retrospective observational study that included patients with STEMI undergoing PPCI from december 2018 to July 2021. The COVID-19 pandemic cases were divided into two groups: pandemic I—from March to August 2020;and pandemic II—from September 2020 to July 2021. Patients were compared according to the period of hospitalization. Primary outcomes were delay times in assistance and clinical outcomes (acute kidney injury [AKI], post-procedural vascular complications and in-hospital mortality). Results: 108 patients were included, 39 (36.1%) in the pre-pandemic period, 13 (12.1%) in pandemic I and 56 (51.8%) in pandemic II. Time from onset of symptoms to arrival at the service and door-to-balloon time did not differ significantly among groups. Vascular complications were more frequent during the pandemic (I and II) than in the pre-pandemic period (2.5% pre-pandemic vs 15.4% pandemic vs 12.5% pandemic II;p = 0.03). AKI incidence was similar in all three periods. There was a non-significant increase in in-hospital mortality during the COVID-19 pandemic. Conclusion: In patients with STEMI, there was an increase in vascular complications and a trend toward increased mortality during the COVID-19 pandemic. delay times to admission and reperfusion did not differ significantly between before and during the pandemic.

关键词： Myocardial Infarction Primary Percutaneous Coronary Intervention Coronary Reperfusion Pandemic COVID-19

Queens remate despite traumatic mating in stingless bees

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Current Zoology 2022年第1期68卷 81-92页

作者： Jamille Costa VEIGA Gustavo Rodrigo Sanches RUIZ gislene Almeida carvalho-ZILSE Cristiano MENEZES Felipe Andres Leon CONTRERA Bee Biology and Ecology Lab Instituto de Ciencias BiologicasUniversidade Federal do ParaBelem66075-110 ParaBrazil Biodiversity and Ecosystem Services Research Group Instituto Tecnologico Vale-Desenvolvimento SustentavelBelem66055-090 ParaBrazil Ecology and Zoology of Invertebrates Lab Instituto de Ciencias BiologicasUniversidade Federal do ParaBelem66075-110 ParaBrazil Bee Research Group Instituto Nacional de Pesquisas da AmazoniaManaus69067-375 AmazonasBrazil Research and development Embrapa Meio AmbienteJaguariuna13820-000 Sao PauloBrazil

Males can control female reproduction using genital plugs to impede access by *** social bees,ants,and wasps,plugging may involve traumatic mating,with females being *** stingless bees,chances are that plugs may promote ovarian activan,and are thought to ensure single mating—a general tendency among the social ***,understanding on relationships between mating plugs,traumatic mating,and mating systems in stingless bees remains *** address this,we(1)compared mated queens of 7 Neotropical species to understand the patterns of copulatory marks in females and(2)compared pre-and post-mating genitalia of males and females in Melipona fasciculata to depict plug functional *** revealed an unprecedented consequence of mating in stingless bees:the characteristic marks left by mating plugs on female abdomens and the inferences that can be made from *** our surprise,in 1 species *** we found that queens retain the plug long after mating,and may carry it for the rest of their *** the other 6 species retained the plug for only a short *** queens were only found in ***,whose multiple copulatory marks match previous findings of polyandry in this *** study shows that queens can remate,and suggests that male genital morphology may determine in part the time persistence of *** conclude that traumatic mating plugs do not fully prevent remating in stingless bees and that mating systems are not uniform in this ***,exceptional cases of facultative polyandry in social insects—for example,when mating plugs fail—may confirm a general tendency for single mating in close link with efficient mating plugs.

关键词： copulatory marks facultative polyandry genital morphology male harm sexual conflict

An exotic Cretaceous kimberlite linked to metasomatized lithospheric mantle beneath the southwestern margin of the S?o Francisco Craton,Brazil

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Geoscience Frontiers 2022年第1期13卷 182-203页

作者： Luísa D.V.carvalho Tiago Jalowitzki Ricardo Scholz Guilherme O.Gonçalves Marcelo Peres Rocha Rogério Silvestre Pereira Cristiano Lana Marco Paulo de castro Gláucia Queiroga Reinhardt A.Fuck Universidade Federal de Ouro Preto(UFOP) Escola de MinasDepartamento de GeologiaCampus Morro do Cruzeiro35400-000 Ouro PretoMGBrazil Universidade de Brasília(UnB) Instituto de GeociênciasCampus Universitário Darcy Ribeiro70910-900 BrasíliaDFBrazil Independent Geologist Consultant

We present major and trace element compositions of mineral concentrates comprising garnet xenocrysts,ilmenite,phlogopite,spinel,zircon,and uncommon minerals(titanite,calzirtite,anatase,baddeleyite and pyrochlore)of a newly discovered Late Cretaceous kimberlite(U-Pb zircon age 90.0±1.3 Ma;2σ)named Osvaldo Franca 1,located in the Alto Paranaíba Igneous Province(APIP),southeastern *** grains are lherzolitic(Lherz-1,Lherz-2 and Lherz-3),harzburgitic(Harz-3)and wehrlitic(Wehr-2).The pyrope xenocrysts cover a wide mantle column in the subcratonic lithosphere(66–143 km;20–43 kbar)at relatively low temperatures(811–875°C).The shallowest part of this mantle is represented by Lherz-1 pyropes(20–32 kbar),which have low-Cr(Cr_(2)O_(3)=1.74–6.89 wt.%)and fractionated middle to heavy rare earth elements(MREE-HREE)*** deepest samples are represented by Lherz-2,Lherz-3,Harz-3,and Wehr-2 pyropes(36–43 kbar).They contain high-Cr contents(Cr_(2)O_(3)=7.36–11.19 wt.%)and are characterized by sinusoidal(Lherz-2 and Wehr-2)and spoon-like(Lherz-3 and Harz-3)REE *** to their REE and trace elements,pyrope xenocrysts have enriched nature(e.g.,Ce and Yb ***_(2)O_(3)),indicating that the cratonic lithosphere has been affected by a silicate melt with subalkaline/tholeiite composition due to their low Zr,Ti and Y *** minerals with typical kimberlitic signatures,such as ilmenite and zircon,the exotic compositions of phlogopite and ulvöspinel suggest an enriched component in the magma *** formation of rare mineral phases with strong enrichment of light-REE(LREE)and high field strength elements(HFSE)is attributed to the late-stage kimberlitic *** propose a tectonic model where a thermal anomaly,represented by the low-velocity seismic anomaly observed in P-wave seismic tomography images,supplied heat to activate the alkaline magmatism from a metasomatized cratonic mantle source during the late-stages of Gondwana fragmentation and conse

关键词： Osvaldo França 1 kimberlite Alto Paranaíba Igneous Province Metasomatized cratonic lithosphere Zircon U-Pb geochronology

Prevalence of congenital cytomegalovirus infection in preterm,small for gestational age and low birth weight newborns:characteristics and cytokines profile

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World Journal of Pediatrics 2022年第7期18卷 498-504页

作者： Janaina Fortes Lino Llian Martins Oliveira Diniz debora Marques de Miranda Daniela Valadao Freitas Rosa Nathalia Gualberto Souza e Silva Eduardo de Souza Nicolau Larissa Goncalves Rezende Lais Silva carvalho Marianna Fischer de Paula Lopes Luisa Petri Correa Gabriela Mafra de Oliveira Flavia Miranda da Silva Alves Lorena Batista Pascoal Erika Lima Dolabella Teixeira da Costal Leni Marcia Anchieta Roberta Maia de castro Romaneli Odete Valadares Maternity Hospital Belo HorizonteBrazil Pediatrics department.Faculy of Medice of Federal University of Minas Gerais Belo Horizonte.Brazil Molecular Laboratory of the INCT-MM.Faculy of Medicine.Federal University of Minas Gerais-UFMG.Belo Horizonte Brazil Faculty of Medicine.Federal University of Minas Gerais-UFMG Belo Horizonte.Brazil Risoleta Tolentino.Neves University Hospital's Maternity Belo HorizonteBrazil Sofia Feldman Maternity Hospital Belo HorizonteBrazil Hospital das Clinicas Maternity-Federal University of Minas Gerais.Belo Horizonte Brazil Pediatrics department of Federal University of Minas Gerais School Medicine.Minas Gerais.Av Professor Alfredo Balena 190.Belo Horizonte 30130-100Brazil

Cytomegalovirus is the most frequent agent of congenital viral infections,affecting approximately 0.2%-2.4%of live births in different countries[1-7].Universal screening for congenital cytomegalovirus infection in newborns is not a standard practice considering cost-benefit issues and viabil-ity of diagnostic ***,most newborns are asympto-matic and there is no effective treatment for this population[2-5].

关键词： weight birth characteristics

Prediction of Pulmonary Arterial Pressure Level after Repair of Congenital Cardiac Communications and Discharge from the Hospital: Role of Down Syndrome and Early Postoperative Hemodynamics

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Congenital Heart Disease 2022年第3期17卷 351-363页

作者： Eloisa Sassa carvalho Maria Francilene SSouza Kelly Cristina O.Abud Claudia R.P.castro Juliano G.Penha Ana Maria Thomaz Vanessa A.Guimaraes Antonio Augusto Lopes Heart Institute(InCor) University of Sao Paulo School of MedicineSão PauloBrazil

Background:Postoperative pulmonary hypertension limits the success of surgical treatment in some patients with unrestrictive congenital cardiac *** patients at risk of developing postoperative pulmonary hypertension is important to individualize follow-up ***:We analyzed a prospective cohort of 52 pediatric patients(age 3 to 35 months)looking for perioperative predictors of mildly elevated pulmonary arterial pressure 6 months after surgery,defined as a systolic pressure greater than 30 mmHg by transthoracic *** corresponds to a mean pulmonary arterial pressure of>20 ***,echocardiographic and hemodynamic parameters were *** hemodynamics was assessed by directly measuring pulmonary and systemic arterial pressures using indwelling *** postoperative pulmonary hemodynamics was defined as the mean pulmonary/systemic mean arterial pressure ratio(PAP/SAP)obtained per patient during the first 6 h of postoperative ***:Among the factors that were investigated as possible predictors,perioperative hemodynamics and the presence of Down syndrome were initially selected using univariate analysis(pdependent predictor after adjustments for possible *** early postoperative PAP/SAP of>0.35 was 76%sensitive and 74%specific at predicting a systolic pulmonary arterial pressure of>30 mmHg 6 months after surgery(hazard ratio with 95%CI 8.972[2.428–33.158],p=0.002).Conclusion:The hypertensive early postoperative behavior of the pulmonary circulation was strongly but not exclusively associated with Down syndrome,and it was char

关键词： Pulmonary hypertension congenital heart disease Down syndrome pediatric cardiac surgery

α,β-amyrin, a natural triterpenoid ameliorates L-arginine-induced acute pancreatitis in rats

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World Journal of Gastroenterology 2010年第34期16卷 4272-4280页

作者： Caroline Mouro Melo Karine Maria Martins Bezerra carvalho Julliana Catharina de Sousa Neves Talita Cavalcante Morais Vietla Satyanarayana Rao Flávia Almeida Santos Gerly Anne de castro Brito Mariana Helena Chaves department of Physiology and Pharmacology Biomedical Institute of Brazilian Semiarid Faculty of Medicine Federal University of Ceará department of Morphology Faculty of Medicine Federal University of Ceará department of Organic and Inorganic Chemistry Federal University of Piauí

AIM: To study the benef icial effects of triterpene α,β-amyrin and the underlying mechanisms in an experimental pancreatitis model. METHODS: Acute pancreatitis was induced in five groups of rats (n = 8) by L-arginine (2 × 2.5 g/kg, intraperitoneal, 1 h apart) and 1 h later, they received a single oral dose of α,β-amyrin (10, 30 and 100 mg/kg),methylprednisolone (30 mg/kg) and vehicle (3% Tween 80). A saline (0.9% NaCl) treated group served as a normal control. Efficacy was assessed at 24 h by determination of serum levels of amylase, lipase and proinflammatory cytokines [tumor necrosis factor (TNF)-α and interleukin (IL)-6], pancreatic myeloperoxidase (MPO) activity, lipid peroxidation [thiobarbituric acid reactive substances (TBARS)], nitrate/nitrite levels, and the wet weight/body weight ratio. Tissue histology and the immunoreactivity for TNF-α and inducible nitric oxide synthetase (iNOS) were performed. RESULTS: α,β-amyrin and methylprednisolone treatments significantly (P decreased the serum levels of amylase and lipase, and TNF-α and IL-6, as compared to the vehicle control. Also, pancreatic levels of MPO activity, TBARS, and nitrate/nitrite were signifi cantly lower. Histological f indings and TNF-α and iNOS immunostaining further confirmed the amelioration of pancreatic injury by α,β-amyrin. CONCLUSION: α,β-amyrin has the potential to combat acute pancreatitis by acting as an anti-in? ammatory and antioxidant agent.

关键词： Acute pancreatitis L-arginine Cytokines Lipid peroxidation α,β-amyrin