6 research outputs found
AVALIAÇÃO DE DIFERENTES TÉCNICAS DE CONTRASTE PARA REVELAR O CONTORNO DE GRÃO AUSTENÍTICO PRÉVIO EM AÇOS
No full textNanocomposite hybrids of cashew apple bagasse- derived lignin with photoprotective properties for sunscreen applications.
No full textProlonged exposure to ultraviolet (UV) radiation can cause significant damage to the skin and immune system. There has consequently been an increasing emphasis on the development of biodegradable and sustainable materials that offer UV protection, reflecting increased awareness of health and disease prevention. Due to its high concentration of phenolic groups, lignin has emerged as a promising candidate for natural UV protective materials. This study therefore aimed to produce nanocomposites of lignin from cashew apple bagasse, due to its wide availability and high lignin content, combined with zinc or titanium oxides for sunscreen application. Fourier transform infrared (FTIR) spectroscopy and X- ray analysis confirm interactions between lignin and zinc/titanium oxides. The resulting nanocomposites are stable, as indicated by their zeta potential (−32 mV to −48 mV). Lignin nanocomposites (LigZnO and LigTiO 2 ) exhibited similar antioxidant activity, though lower than that of lignin alone. Although lignin nanocomposites exhibited low sun protection factor (SPF) values in an emulsion base, they enhanced SPF in a commercial sunscreen. LigZnO (15.9) and LigTiO 2 (15.7) boosted the effectiveness of commercial UV absorbers (Parsol MCX and avobenzone), outperforming formulations with lignin alone or commercial ZnO and TiO 2 . The synergistic interaction between LigTiO 2 , LigZnO, and organic UV blockers reinforced thixotropy, making lignin nanocomposites a promising additive for sunscreen formulations. Their low cost and sustainable synthesis add value to nanomaterials while mitigating agro- waste disposal. © 2025 The Author(s). Biofuels, Bioproducts and Biorefining published by Society of Industrial Chemistry and John Wiley & Sons Ltd
Erratum to "A call for CARE in animal behaviour: an holistic ethical research framework" (Animal Behaviour, (2026), 231, C, (123428), (S0003347225003550), 10.1016/j.anbehav.2025.123428)
No full text\ua9 2026 The Author(s).The publisher regrets that affiliation ‘University of Rennes, Normandie University, CNRS, EthoS (Human and Animal Ethology) - UMR 6552, F-35000 Rennes, France’ was incorrectly changed to ‘Cooperative Evolution Lab, German Primate Center, G\uf6ttingen, Germany’. The correct affiliation list is: a School of Psychology and Neuroscience, University of St Andrews, St Andrews, U.K. b University of Rennes, Normandie University, CNRS, EthoS (Human and Animal Ethology) - UMR 6552, F-35000 Rennes, France c Parrot Kindergarten Inc., Jupiter, FL, U.S.A. d Federal University of S\ue3o Paulo (UNIFESP), S\ue3o Paulo, Brazil e ProMuriqui Institute, S\ue3o Miguel Arcanjo, Brazil f School of Psychology, Newcastle University, Newcastle upon Tyne, U.K. g Cat\uf3lica Research Centre for Psychological-Family and Social Wellbeing, Universidade Cat\uf3lica Portuguesa, Lisboa, Portugal h William James Center for Research, ISPA–Instituto Universit\ue1rio, Lisbon, Portugal i School of Biology, University of St Andrews, S. Andrews, U.K. j Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Konstanz, Germany k Institute at Brown for Environment and Society, Brown University, Providence, RI, U.S.A. l Department of Evolutionary Anthropology, University of Z\ufcrich, Z\ufcrich, Switzerland m Department of Paleontology, University of Z\ufcrich, Z\ufcrich, Switzerland n Development and Evolution of Cognition Research Group, Max Planck Institute of Animal 25 Behavior, Konstanz, Germany o Department of Comparative Cognition, University of Neuch\ue2tel, Neuch\ue2tel, Switzerland p Cooperative Evolution Lab, German Primate Center, G\uf6ttingen, Germany The publisher would like to apologise for any inconvenience caused
Modified Atmosphere Packaging and UV-C Radiation on Shelf Life of Rainbow Trout (Oncorhynchus Mykiss)
No full textAbstractEffects of modified atmosphere packaging (MAP) in combination to UV-C radiation on rainbow trout fillets were examined. The samples were submitted to two treatments: (T1) aerobic package; (T2) MAP+UV-C radiation (80% CO2/20% N2; 106.32mJ/cm2) and were analyzed daily for microbiological (mesophilic and psychrotrophic count) and chemical (biogenic amines) parameters. MAP+UV-C radiation (T2) promoted lag phase formation and lower number of colonies in the stationary phase as well as retarded cadaverine production during storage time. MAP+UV-C radiation retard microbial growth and delay chemical changes enhancing the shelf life of rainbow trout fillets by at least twice
Tabajara Prophecy of Paraíba.
No full textThis research report aims to present the research and development process of a documentary short film script, entitled Prophecy Tabajara da Paraíba, whose theme focuses on the history of the struggle to retake the Tabajara indigenous people of Paraíba. The Tabajara, since the end of the 19th century, were silenced and made invisible, even being considered extinct. However, the young Ednaldo Tabajara, Ednaldo dos Santos
Silva, becoming aware of the existence of his people who were dispersed, decides, together with some family members, to fight for the reunificationand reorganization of their traditions and customs. In this decision to reconnect his people, Ednaldo Tabajara comes to know the prophecy narrated by the old trunk Antônio Piaba, a respected elder, who said that one day a strong and capable young manwould come and fight for the rescue
of the Tabajara indigenous people and reunite his people. Ednaldo takes this prophecy to himself and starts a whole job of looking for his family. The documentary script here in question aims to present the Tabajara history today. The research for this report has theoretical support in authors who study this theme, such as: Barcellos and Eliane Farias (2015) and Barcellos and Figueredo (2019). We conducted a research on the writing and
script construction methods of the authors Puccini (2007) and Field (2001), in addition to interviews and documentary surveys, thus enabling a basis in the construction of the documentary script. We also researched the beginning of the documentary in Brazil through the authors Gonçalves (2006) and Rodrigues (2010). In addition, a study was carried out on the construction of theindigenous documentary based on authors such as
Costa and Galdino (2018). Then, we made an analysis about the Videos in the Villages project based on the author Lacerda (2018). Finally, we undertook a study on specific festivals with indigenous themes inthe light of the theoretical contributions of Freitas (2019).Este relatório de pesquisa tem como objetivo apresentar o processo de pesquisa e de desenvolvimento de um roteiro de curta-metragem de documentário, intitulado Profecia Tabajara da Paraíba, cuja temática foca na história da luta de retomada do povo indígena Tabajara da Paraíba. Os Tabajara, desde o final do século XIX, estavam silenciados e invisibilizados, chegando até a serem considerados extintos. Contudo, o jovem Ednaldo
Tabajara, Ednaldo dos Santos Silva, tomando ciência da existência do seu povo que se encontrava disperso, decide, junto com alguns familiares, lutar pela reunificação e reorganização das suas tradições e de seus costumes. Nessa decisão de reaproximação do seu povo, Ednaldo Tabajara passa a conhecer a profecia narrada pelo tronco velho Antônio Piaba, ancião respeitado, que dizia que um dia um jovem forte e capacitado viria e lutaria pelo resgate dos indígenas Tabajara e reunificaria sua gente. Ednaldo toma para si esta profecia e inicia todo um trabalho de ir à procura dos seus familiares. O roteiro de documentário aqui em questão tem como objetivo apresentar a história Tabajara na atualidade. A pesquisa para este relatório tem aporte teórico em autores que estudam esta temática, como: Barcellos e Eliane Farias (2015) e Barcellos e Figueredo (2019).
Realizamos uma pesquisa sobre os métodos de escrita e construção de roteiro dos autores Puccini (2007) e Field (2001), além de entrevistas e levantamento documental, possibilitando, dessa forma, embasamento na construção do roteiro de documentário. Também pesquisamos sobre o início do documentário no Brasil através dos autores Gonçalves (2006) e Rodrigues (2010). Ademais, foi feito um estudo sobre a construção do documentário indígena tendo como base autores como Costa e Galdino (2018). Depois, fizemos uma análise sobre o projeto Vídeos nas Aldeias tendo como base o autor Lacerda (2018). Por último, empreendemos um estudo sobre os festivais específicos com temática indígenas à luz das contribuições teóricas de Freitas (2019)
Copper nanoparticles stabilized with cashew gum: Antimicrobial activity and cytotoxicity against 4T1 mouse mammary tumor cell line
No full textCopper nanoparticles stabilized with cashew (CG-CuNPs) were synthesized by reduction reaction using ascorbic acid and sodium borohydride, using the cashew gum (CG) as a natural polymer stabilizer. Dynamic light scattering, atomic force microscopy, Fourier-transform infrared spectroscopy, UV-Vis spectrophotometry, and x-ray diffraction were used to characterize the nanoparticles (CG-CuNPs), and copper was quantified by electrochemical measurement. The UV-vis spectra of the CG-CuNPs confirmed the formation of nanoparticles by appearance of a surface plasmon band at 580 nm after 24 h of reaction. The Fourier-transform infrared spectrum of CG-CuNPs showed the peak at 1704 cm−1 from cashew gum, confirming the presence of the gum in the nanoparticles. The average size of CG-CuNPs by dynamic light scattering and atomic force microscopy was around 10 nm, indicating small, approximately spherical particles. Antimicrobial assays showed that CG-CuNPs had activity against Staphylococcus aureus ATCC 29213 with a minimal inhibitory concentration of 0.64 mM. The cytotoxicity assay on BALB/c murine macrophages showed lower cytotoxic effects for CG-CuNPs than CuSO4·5H2O. Viability cell assays for CG-CuNPs at (0.250 mM) inhibited by 70% the growth of 4T1 LUC (4T1 mouse mammary tumor cell line) and NIH 3T3 cells (murine fibroblast cells) over a 24-h period. Therefore, CG-CuNPs can be used as an antimicrobial agent with lower cytotoxic effects than the CuSO4·5H2O precursor.The author would like to thank at UCM for performingDPV, USP by X-ray diffraction experiment, REQUIMTE/LAQV for FTIR, UnB and UFPI for the cytotoxicityassays, as well as at UFPI for help with DLS, UV-Vis,AFM, and microbiological experiments. This work was supported by Project 400398/2014-1—Desenvolvimento de Nanopartículas Estabilizadas com Goma de Cajueiro para Aplicações Biotecnologicas, financed by CNPq. AlexandraPlácido is grateful to FCT by her grant SFRH/BD/97995/2013, financed by POPH-QREN-Tipologia 4.1-Formação Avançada, subsidized by Fundo Social Europeu and Ministério da Ciência, Tecnologia e Ensino Superior.info:eu-repo/semantics/publishedVersio
