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Ferroelectricity Induced by Oxygen Vacancies in Rhombohedral ZrO_(2) Thin Films

Energy & Environmental Materials 2024年第1期7卷 229-237页

作者： Veniero Lenzi José P.B.Silva Břetislav Šmíd Vladimir Matoín Cosmin M.Istrate Corneliu Ghica Judith L.MacManus-Driscoll Luís Marques Physics Center of Minho and Porto Universities(CF-UM-UP) University of MinhoCampus de Gualtar 4710-057Braga Portugal Laboratory of Physics for Materials and Emergent Technologies LapMETUniversity of Minho4710-057Braga Portugal Department of Surface and Plasma Science Faculty of Mathematics and PhysicsCharles UniversityV Holešovičkách 218000Prague 8 Czech Republic National Institute of Materials Physics 105 bis Atomistilor 077125Magurele Romania Department of Materials Science and Metallurgy 27 Charles Babbage Rd.Cambridge CB3 OFSUK

Rhombohedral phase Hf_(x)Zr_(1.x)O_(2)(HZO,x from 0 to 1)films are promising for achieving robust ferroelectric polarization without the need for an initial wake-up pre-cycling,as is normally the case for the more commonly studied orthorhombic ***,a large spontaneous polarization observed in rhombohedral films is not fully understood,and there are also large discrepancies between experimental and theoretical *** this work,in rhombohedral ZrO_(2)thin films,we show that oxygen vacancies are not only a key factor for stabilizing the phase,but they are also a source of ferroelectric polarization in the *** is shown experimentally through the investigation of the structural properties,chemical composition and the ferroelectric properties of the films before and after an annealing at moderate temperature(400℃)in an oxygen environment to reduce the V_(o)concentration *** experimental work is supported by density functional theory(DFT)calculations which show that the rhombohedral phase is the most stable one in highly oxygen defective ZrO_(2)*** DFT calculations also show that V_(o)contribute to the ferroelectric *** findings reveal the importance of V_(o)for stabilizing rhombohedral ZrO_(2)thin films with superior ferroelectric properties.

关键词： charged defects ferroelectric polarization rhombohedral phase stability zirconia

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Mesenchymal stem cells secretome:current trends and future challenges

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Neural Regeneration Research 2020年第1期15卷 75-77页

作者： Fabio G.Teixeira Antonio J.Salgado Life and Health Sciences Research Institute(ICVS) School of MedicineUniversity of MinhoBragaPortugalICVS/3B’s Associate LabPT Government Associated LabBraga/GuimaraesPortugal

Mesenchymal stem cells(MSCs)secretome:a good candidate for medical biotechnology?Medical biotechnology is currently defined as the application of biotechnological tools for producing multiple technologies and products to health care,becoming an important bridge between different fields,namely neuroscience,regenerative medicine,pharmacology and bio-engineering(Pham,2018).The use and manipulation of stem cells can potentially represent a medical biotechnology breakthrough that brings regenerative medicine to a new ***,over the last decade,the use of stem cells has remarkably been proposed as a regenerative tool,and within it,MSCs have emerged as a promising therapeutic option.

关键词： manipulation breakthrough becoming

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Sex and season explain spleen weight variation in the Egyptian mongoose

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Current Zoology 2019年第1期65卷 11-20页

作者： Victor BANDEIRA Emilio Virgos Alexandre AZEVEDO Joao Carvalho Monica V. CUNHA Carlos Fonseca Dartment of Biology Centro de Estudos do Ambiente e do Mar (CESAM) University of Aveiro Campus Universitario de Santiago Aveiro 3810-193 Portugal Departamento de Biologia Geologia Fisica y Qufmica Inorganica Area Biodiversidad y Conservacion Escuela Superior de Ciencias Experimentales y Tecnologia (ESCET) Universidad Rey Juan Carlos c/Tulipan s/n Mostoles Madrid E-28933 Spain Leibniz Institute for Zoo and Wildlife Research Alfred-Kowalke-Straβe 17 Berlin 10315 Germany Instituto de Ciencias Biomedicas Abel Salazar R. Jorge de Viterbo Ferreira 228 Porto 4050-313 Portugal Instituto Nacional de Investigaqao Agraria e Veterinaria (INIAV) IP-National Institute for Agrarian and Veterinary Research Rua dos Lagidos Lugar da Madalena Vairao 4485-655 Portugal cE3c-Centre for Ecology Evolution and Environmental Changes Faculdade de Ciencias Universidade de Lisboa Lisboa 1749-016 Portugal BiolSI-Biosystems & Integrative Sciences Institute Faculdade de Ciencias Universidade de Lisboa Lisboa 1749-016 Portugal Wildlife Ecology & Health group (WE&H) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS) Departament de Medicina i Cirurgia Animals Universitat Autonoma de Barcelona 08193-Bellaterra Barcelona Spain

The Egyptia n mon goose (Herpestes ichneumon Linn aeus, 1758) is a medium-sized car nivore that experienced remarkable geographic expansion over the last 3 decades in the Iberian Peninsula. In this study, we investigated the association of species-related and abiotic factors with spleen weight (as a proxy for immunocompete nee) in the species. We assessed the relationship of body con dition, sex, age, seas on, and envir onmental conditi ons with splee n weight established for 508 hunted specimens. Our results indicate that the effects of sex and season outweigh those of all other variables, including body condition. Spleen weight is higher in males than in females, and heavier spleens are more likely to be found in spring, coinciding with the highest period of investment in reproduction due to mating, gestation, birth, and lactation. Coupled with the absence of an effect of body condition, our findi ngs suggest that splee n weight variation in this species is mostly influe need by lifehistory traits linked to reproduction, rather than overall energy availability, winter immunoenhancement, or energy partitioning effects, and prompt further research focusing on this topic.

关键词： body condition carnivore Herpestes ichneumon Iberian Peninsula mongoose spleen weight

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Eliminating the Unruh effect of relativistic Dirac fields by partial measurements

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Communications in Theoretical Physics 2020年第12期72卷 130-136页

作者： N A Khan Syed Tahir Amin Munsif Jan Centro de Física das Universidades do Minho e Porto Departamento de Física e AstronomiaFaculdade de CiênciasUniversidade do Porto4169-007 PortoPortugal Departamento de Física Instituto Superior TécnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisboaPortugal CeFEMA Instituto Superior TécnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisboaPortugal Instituto de Telecomunicacoes LAv.Rovisco Pais1049-001 LisboaPortugal CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China

The retrieval of lost entanglement for relatively accelerated fermionic observers of a tripartite system by a partial measurement technique has been *** the prospective of the negativities of one-tangles and theπ-tangle,we show that the degraded entanglement in noninertial frames with single-mode approximation is completely retrieved by an optimal strength of the partial measurement or the partial measurement *** addition,we find that the optimal one-tangle with respect to inertial and noninertial observers turns out to be the same for an optimal strength of partial measurements at q0=0 when two accelerated observers move with infinite acceleration.

关键词： entanglement retrieval π-tangle Unruh decoherence

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Towards an integrated framework for the risk assessment of coastal structures exposed to earthquake and tsunami hazards

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Resilient Cities and Structures 2022年第2期1卷 57-75页

作者： Cláudia Reis Mário Lopes Maria Ana Baptista Stéphane Clain Civil Engineering Research and Innovation for Sustainability CERISInstituto Superior TécnicoUniversidade de LisboaAvenida Rovisco Pais1Lisboa 1049-001Portugal Instituto Superior de Engenharia de Lisboa Instituto Politécnico de LisboaR.Conselheiro Navarro 1Lisboa 1959-007Portugal Departamento de Matemática Centro de FísicaUniversidade do MinhoCampus de GualtarBraga 4710-057Portugal

The spatial distribution of the world population is uneven,with a density of about 40%living in coastal *** trend is expected to continue in both demographic indicators and urban development rate,being many coastal cities in seismic-and tsunami-prone regions and built through informal and unplanned settlements,exposing their population and assets to such *** tectonic-triggered events raised awareness of the cascading earthquake and tsunami threat and highlighted the paucity of structural design criteria considering the cumulative effects of *** being exposed to the ground-motion,the structures’resistance may decrease and become residual/non-existent to support the incoming tsunami,implying an underestimation of the *** management can benefit from reinforcing the ties between natural hazards and engineering practitioners,linking science and industry,and promoting dialogue between risk analysts and *** by the expansion plans of an internationally-sized deep-water port located in a tsunami-prone region,a reflection on the work needed to perform a multi-risk assessment and the challenges yet to overcome is introduced to emphasize the challenge of combining safety requirements with financial and ecologic concerns.A conceptual interdisciplinarybased methodology is proposed to support uncertainty-aware,systematic and informed decisions.

关键词： Cascading earthquake and tsunami Multi-hazard Structural vulnerability to earthquake and derivative tsunami Performance-based engineering to cascading ground motion and tsunami

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Glycoproteogenomics: Setting the Course for Next-generation Cancer Neoantigen Discovery for Cancer Vaccines

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Genomics, Proteomics & Bioinformatics 2021年第1期19卷 25-43页

作者： José Alexandre Ferreira Marta Relvas-Santos Andreia Peixoto AndréM.N.Silva Lúcio Lara Santos Experimental Pathology and Therapeutics Group Portuguese Institute of OncologyPorto 4200-072Portugal Institute of Biomedical Sciences Abel Salazar University of PortoPorto 4050-313Portugal Porto Comprehensive Cancer Center(P.ccc) Porto 4200-072Portugal REQUIMTE-LAQV Department of Chemistry and BiochemistryFaculty of Sciences of the University of PortoPorto 4169-007Portugal

Molecular-assisted precision oncology gained tremendous ground with high-throughput next-generation sequencing(NGS),supported by robust *** quest for genomicsbased cancer medicine set the foundations for improved patient stratification,while unveiling a wide array of neoantigens for *** pre-clinical and clinical studies have successfully used tumor-specific peptides in vaccines with minimal off-target ***,the low mutational burden presented by many lesions challenges the generalization of these solutions,requiring the diversification of neoantigen *** utilizing customized databases for protein annotation by mass spectrometry(MS)is a powerful tool toward this *** the concept toward exploring proteoforms originated from post-translational modifications(PTMs)will be decisive to improve molecular subtyping and provide potentially targetable functional nodes with increased cancer *** through the path of systems biology,we highlight that alterations in protein glycosylation at the cell surface not only have functional impact on cancer progression and dissemination but also originate unique molecular fingerprints for targeted ***,we discuss the outstanding challenges required to accommodate glycoproteomics in oncoproteogenomics *** envisage that such rationale may flag a rather neglected research field,generating novel paradigms for precision oncology and immunotherapy.

关键词： Glycoproteogenomics Oncoproteogenomics Cancer neoantigens Glycosylation Precision oncology

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Wear behavior of Ti6Al4V biomedical alloys processed by selective laser melting, hot pressing and conventional casting

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Transactions of Nonferrous Metals Society of China 2017年第4期27卷 829-838页

作者： F.BARTOLOMEU M.BUCIUMEANU E.PINTO N.ALVES F.S.SILVA O.CARVALHO G.MIRANDA Center for Micro-Electro Mechanical Systems (CMEMS-UMinho) University of Minho Azurem 4800-058 Guimaraes Portugal Cross-Border Faculty of Humanities Economics and Engineering"Dunarea de Jos" University of Galati Domneasca 47 800008 Galati Romania Centre for Rapid and Sustainable Product Development Polytechnic Institute of Leiria Rua General Norton de Matos Apartado 4133 2411-901 Leiria Portugal

The aim of this work was to study the influence of the processing route on the microstructural constituents,hardness andtribological(wear and friction)behavior of Ti6Al4V biomedical *** this sense,three different processing routes were studied:conventional casting,hot pressing and selective laser melting.A comprehensive metallurgical,mechanical and tribologicalcharacterization was performed by X-ray diffraction analysis,Vickers hardness tests and reciprocating ball-on-plate wear tests ofTi6Al4V/Al2O3sliding *** results showed a great influence of the processing route on the microstructural constituents andconsequent differences on hardness and wear *** highest hardness and wear resistance were obtained for Ti6Al4Valloy produced by selective laser melting,due to a markedly different cooling rate that leads to significantly different microstructurewhen compared to hot pressing and *** study assesses and confirms that selective laser melting is potential to producecustomized Ti6Al4V implants with improved wear performance.

关键词： biomedical alloy Ti6Al4V alloy wear behavior microstructure selective laser melting hot pressing casting

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Dental pulp stem cells and BonelikeVR for bone regeneration in ovine model

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Regenerative Biomaterials 2019年第1期6卷 49-59页

作者： J.M.Campos A.C.Sousa A.R.Caseiro S.S.Pedrosa P.O.Pinto M.V.Branquinho I.Amorim J.D.Santos T.Pereira C.M.Mendonca A.Afonso L.M.Atayde A.C.Maurı´cio Departamento de Clı´nicas Veterina´rias Instituto de Cieˆncias Biome´dicas de Abel Salazar(ICBAS)Universidade do Porto(UP)Rua de Jorge Viterbo Ferreirano 2284050-313 PortoPortugal Centro de Estudos de Cieˆncia Animal(CECA) Instituto de CieˆnciasTecnologias e Agroambiente da Universidade do Porto(ICETA)Rua D.Manuel IIApartado 551424051-401 PortoPortugal Escola Universita´ria Vasco da Gama(EUVG) Hospital Veterina´rio Universita´rio de Coimbra(HVUC)Campo Universita´rio–Bloco BLordem~aoCoimbraPortugal REQUIMTE/LAQV–U.Porto–Porto/Portugal Departamento de Engenharia Metalu´rgica e MateriaisFaculdade de EngenhariaUniversidade do PortoRuaDr.Roberto Friass/n4200-465 PortoPortugal Faculdade de Engenharia da Universidade do Porto(FEUP) Rua Dr.Roberto Frias4200-465 PortoPortugal Department of Pathology and Molecular Immunology of the Institute of Biomedical Sciences Abel Salazar(ICBAS) University of Porto4050-313 PortoPortugal Institute for Research and Innovation in Health (i3S)University of PortoPortoPortugal Institute of Molecular Pathology and Immunology of the University of Porto(IPATIMUP) 4200-135 PortoPortugal Faculdade de Medicina Denta´ria da Universidade do Porto(FMDUP) 4200-393 PortoPortugal

Development of synthetic bone substitutes has arisen as a major research interest in the need to find an alternative to autologous bone *** an ovine model,the present pre-clinical study presents a synthetic bone graft(BonelikeVR)in combination with a cellular system as an alternative for the regeneration of non-critical *** association of biomaterials and cell-based therapies is a promising strategy for bone tissue *** stem cells(MSCs)from human dental pulp have demonstrated both in vitro and in vivo to interact with diverse biomaterial systems and promote mineral deposition,aiming at the reconstruction of osseous ***,these cells can be found and isolated from many ***-critical bone defects were treated with BonelikeVR with or without MSCs obtained from the human dental *** showed that BonelikeVR and MSCs treated defects showed improved bone regeneration compared with the defects treated with BonelikeVR ***,it was observed that the biomaterial matrix was reabsorbed and gradually replaced by new bone during the healing *** therefore propose this combination as an efficient binomial strategy that promotes bone growth and vascularization in non-critical bone defects.

关键词： biomaterial BonelikeVR bone regeneration,dental pulp human bone hydroxyapatite mesenchymal stem cells ovine model tissue regeneration tricalcium phosphate

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Physical activity in primary and secondary prevention of cardiovascular disease:Overview updated

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World Journal of Cardiology 2016年第10期8卷 575-583页

作者： Alberto J Alves Joao L Viana Suiane L Cavalcante Nórton L Oliveira JoséA Duarte Jorge Mota JoséOliveira Fernando Ribeiro Research Centre in Sports Sciences Health and Human DevelopmentCIDESDUniversity Institute of Maia Research Center in Physical Activity Health and LeisureCIAFELFaculty of SportUniversity of Porto School of Health Sciences and Institute of Biomedicine iB iM EDUniversity of Aveiro

Although the observed progress in the cardiovascular disease treatment, the incidence of new and recurrent coronary artery disease remains elevated and constitutes the leading cause of death in the developed countries. Three-quarters of deaths due to cardiovascular diseases could be prevented with adequate changes in lifestyle, including increased daily physical activity. New evidence confirms that there is an inverse dose-response relationship between physical activity and cardiovascular disease and mortality risk. However, participation in moderate to vigorous physical activity may not fully attenuate the independent effect of sedentary activities on increased risk for cardiovascular diseases. Physical activity also plays an important role in secondary prevention of cardiovascular diseases by reducing the impact of the disease, slowing its progress and preventing recurrence. Nonetheless, most of eligible cardiovascular patients still do not benefit from secondary prevention/cardiac rehabilitation programs. The present review draws attention to the importance of physical activity in the primary and secondary prevention of cardiovascular diseases. It also addresses the mechanisms by which physical activity and regular exercise can improve cardiovascular health and reduce the burden of the disease.

关键词： Physical activity Primary prevention Secondary prevention Cardiovascular disease Health care evaluation mechanisms

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In-vitro gastrointestinal digestion of functional cookies enriched with chestnut shells extract:Effects on phenolic composition,bioaccessibility,bioactivity,andα-amylase inhibition

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Food Bioscience 2023年第3期53卷 3087-3100页

作者： Diana Pinto Manuela M.Moreira Jaroslava Svarc-Gajic Anna Vallverdú-Queralt Tanja Brezo-Borjan Cristina Delerue-Matos Francisca Rodrigues REQUIMTE/LAQV ISEPPolytechnic of PortoRua Dr.António Bernardino de Almeida4249-015PortoPortugal Faculty of Technology University of Novi SadBulevar cara Lazara 121000Novi SadSerbia Nutrition Food Science and Gastronomy DepartmentSchool of Pharmacy and Food ScienceUniversity of BarcelonaBarcelonaSpain Consorcio CIBER M.P.Fisiopatología de la Obesidad y la Nutrición(CIBERObn)Instituto de Salud CarlosⅢ(ISCⅢ)MadridSpain

Chestnut(Castanea sativa)shells(CS)are an appealing source of *** previous studies,the research team validated a nutraceutical extract from CS,recovered by an eco-friendly technology,by in-vitro and in-vivo assays,and developed functional cookies enriched with this *** study attempts,for the first time,to investigate the impact of the in-vitro gastrointestinal digestion in the phenolic composition,bioaccessibility,antioxidant/antiradical properties,andα-amylase inhibition of CS extract-enriched *** outcomes revealed higher polyphenols concentrations retained after intestinal digestion,endorsing its better antioxidant,antiradical,and hypoglycemic *** phenolics recovery enhanced in the following order:oral phases,achieving 93.50%of maximum bioaccessibility and unveiling a protective effect of the cookie matrix and slow phenolics release during *** the identical composition in phenolic acids,changes in their concentrations were attested between digested and undigested *** analysis predicted the outstanding contribution of polyphenols to the bioactivity of *** study high-lighted the valorization of CS as nutraceutical ingredient for functional cookies,proving its efficacy after in-vitro digestion.

关键词： Castanea sativa Antioxidants Functional food In-vitro simulated digestion Pro-healthy benefits

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