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Documentos Administrativos Documentos administrativos da UFES (Relatórios institucionais, Atos normativos, Resoluções, Portarias e etc)Livros Digitais Livros digitais "ebooks" (e-livros) publicados ou adquiridos pela UFESProdução Científica Produção científica e técnica da UFES, como Artigos, livros e capítulos, trabalhos apresentados em eventos, entrevistas, resenhas, traduções, patentes, cultivares, marcas, etc.Teses e Dissertações Teses e dissertações depositadas no repositório da UFESTrabalhos Acadêmicos Trabalhos acadêmicos de conclusão de curso (TCC) de graduação e pós-graduação lato sensu
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Tribocorrosão de metais duros em meios ácidos
(Universidade Federal do Espírito Santo, 2025-08-27) Oliveira, Daniela Nunes; Mello, José Daniel Biasoli de
; https://orcid.org/0000-0001-8912-2132; http://lattes.cnpq.br/1696467778255755; Scandian, Cherlio ; https://orcid.org/0000-0002-4393-719X; http://lattes.cnpq.br/8466752738430250; https://orcid.org/0009-0009-2256-9445; http://lattes.cnpq.br/4437532644758347; Strey, Nathan Fantecelle ; https://orcid.org/0000-0002-2568-116X; http://lattes.cnpq.br/3613706957012460; Alves, Juliane Ribeiro da Cruz ; https://orcid.org/0000-0002-5766-6263; http://lattes.cnpq.br/3865682870831139
Hardmetals are composite materials widely used in industrial applications that demand high wear resistance. Among them, WC–Co, composed of tungsten carbide particles embedded in a cobalt matrix, is the most common, being employed in cutting tools and components for the mining and oil industries. Despite their high wear resistance, their service performance can be compromised in corrosive environments, where the interaction between wear and corrosion accelerates degradation, making the study of tribocorrosion essential. Accordingly, this work investigated the tribocorrosion behavior of WC–Co composites with different cobalt contents (9%, 10%, and 16%) and carbide grain sizes (1.2 µm, 1.3 µm, and 2.5 µm) in acidic media, aiming to understand the interaction between sliding wear and corrosion and their effects on material integrity. The composites were characterized by chemical analysis, X-ray diffraction, grain size measurement, hardness, and density. Sliding wear, corrosion, and tribocorrosion tests were performed, with the latter two conducted in H2SO4 solutions at 0.01 N and 1 N. Synthetic hematite spheres were employed as counterbodies, chosen to simulate typical practical conditions, particularly in iron ore beneficiation. Analyses included friction coefficient determination, triboscopy, electrochemical parameters, mass loss, and surface characterization by optical microscopy, SEM, and EDS. In the sliding wear tests, the friction coefficient exhibited stable behavior (0.21–0.33), and wear rates were on the order of 10−4 mm3/m for the samples and 10−6–10−5 mm3/m for the spheres, without significant mechanical damage, such as grain fracture or pullout. In the corrosion tests, selective dissolution of the binder occurred in 0.01 N, with average mass loss around 0.07 mg/min for all samples. In 1 N solution, 09Co12 and 10Co13 showed average mass losses of 0.08 mg/min, whereas 16Co25 exhibited a significantly higher value of 0.17 mg/min, indicating lower corrosion resistance for the sample with the highest cobalt content. During tribocorrosion, the friction coefficient varied with polarization, and the sample with the highest cobalt content again exhibited the highest wear rates (10−2 mm3/m). SEM images revealed selective binder dissolution and the formation of a pseudopassive tungsten oxide layer, with a shallower dissolution depth than in isolated corrosion, suggesting partial sealing by redistributed corrosion products
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A alfabetização nas estratégias biográficas de alfabetizadores, técnicos e estudantes do Mobral no Espírito Santo (1970-1980)
(Universidade Federal do Espírito Santo, 2025-10-20) Baptista, Leonardo; Simões, Regina Helena Silva
; https://orcid.org/0000-0002-7554-3152; http://lattes.cnpq.br/6496906753146666; https://orcid.org/0000-0003-2062-8375; http://lattes.cnpq.br/7050257002722339; Berto, Rosianny Campos ; https://orcid.org/0000-0003-3143-3258; http://lattes.cnpq.br/7265885791648266; Oliveira, Edna Castro de ; https://orcid.org/0000-0003-0798-7090; http://lattes.cnpq.br/1029441038069805; Paiva, Jane ; https://orcid.org/0000-0002-3501-8740; http://lattes.cnpq.br/3049044829510326; Alvarenga, Marcia Soares de ; https://orcid.org/0000-0002-8686-9844; http://lattes.cnpq.br/4672329547292143
The thesis investigates the production of literacy processes of the Brazilian Literacy Movement in Espírito Santo (Mobral/ES), between the years 1970 and 1980, in the context of the wide national campaign established during the Military Dictatorship (1964–1985), aiming at the elimination of illiteracy in the country. With this objective, it highlights personal strategies (Levi, 2000) put into practice by students, technicians, and teachers in the development of the activities of the Functional Literacy Program (PAF), considering possible outcomes of this experience in the biographical paths of the individuals who lived it. For this purpose, it uses as research sources institutional documents, newspaper articles, letters from educators and students, and interviews with former participants (literacy teachers, technicians, students) of Mobral/ES. The study of this documentation adopts the analytical approach of microhistory, guided by the evidential method (Ginzburg, 1987, 1990, 2007; Levi, 2000). In the field of historiography about the Brazilian dictatorial regime, it dialogues with authors such as Napolitano (2014), Fico (2004), Reis (2000), and Motta (2014). Studies carried out by Ferraro (2009), Maria Di Pierro, and Galvão (2012) supported the analyses of illiteracy in Brazil. For the understanding of adult literacy processes, this research dialogues with the thought of Paulo Freire (1977, 2020, 2021). As a result, it shows ways in which technicians, literacy teachers, and students mobilized their experiences in Mobral/ES, in the constitution of strategies guided by their own interests. In this way, these subjects attributed meanings and singular characteristics to literacy, understanding it as a space of possibilities for the realization of professional, family, and socioeconomic projects, and, in the case of the students, also of overcoming social, cultural, and economic exclusions that marked their biographical trajectories
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Tecnologia de aplicação com aeronave não tripulada no manejo da sigatoka na cultura da banana
(Universidade Federal do Espírito Santo, 2025-09-02) Schaeffer, Maickel Lucas; Vitória, Edney Leandro da; https://orcid.org/0000-0002-2268-6037; http://lattes.cnpq.br/5385859254036142; https://orcid.org/0000-0001-9976-2379; http://lattes.cnpq.br/3112391509157438; Fernandes, Adriano Alves; https://orcid.org/0000-0002-5016-0745; http://lattes.cnpq.br/4927918119791381; Oliveira, Ednaldo Miranda de; https://orcid.org/0000-0002-1182-7623; http://lattes.cnpq.br/5438678030553977; Araújo, Rychardson Rocha de; https://orcid.org/0000-0003-2500-0923; http://lattes.cnpq.br/8834429015420309
Banana farming is strategically important for Brazilian agribusiness, with Espírito Santo standing out as a key production hub. However, fungal leaf diseases such as Sigatoka spp. severely compromise productivity, requiring efficient chemical control. Remotely Piloted Aircraft (RPA) emerge as a promising alternative to traditional application methods, offering greater precision and lower environmental impact. This study aimed to define the optimal flight configurations (application rate and droplet size) for aerial spraying via RPA in 'Prata' banana plants, seeking to optimize droplet deposition and Sigatoka control. The experiment was conducted in Linhares, ES, using a randomized block design with five replications in a 4×3 factorial arrangement: four application rates (8, 10, 12, and 14 L ha⁻¹) and three droplet sizes (180, 240, and 300 μm), employing a DJI Agras T40 RPA at 4.5 m height and 20 km h⁻¹. Deposition was assessed using water-sensitive papers and PVC tags, while disease control was evaluated using systemic fungicides (groups C2 and G1), applied monthly for three months, with weekly post-application monitoring following Stover’s methodology. Results showed that the 14 L ha⁻¹ rate provided 120% greater coverage than 8 L ha⁻¹, while 240 μm and 300 μm droplets performed similarly, surpassing 180 μm droplets by 45%. The 8 L ha⁻¹ rate resulted in 46.06% lower droplet density than 14 L ha⁻¹, with 180 μm and 240 μm droplets producing 21.73 droplets cm⁻² (55.7% higher than 300 μm). Regarding drift potential, the combination of 12 L ha⁻¹ with 300 μm droplets showed the lowest Drift Risk Potential (DRP) and higher Dv0.1, indicating fewer ultra-fine droplets. The Volumetric Median Diameter (VMD) was directly influenced by nominal droplet size, with 12 L ha⁻¹ + 300 μm showing less than 14% variation, indicating greater stability and lower drift risk. The most efficient deposition was achieved with 10 L ha⁻¹ + 240 μm. For Sigatoka control, the treatments 14 L ha⁻¹ + 300 μm (77.2% relative efficacy), 8 L ha⁻¹ + 300 μm (74.6%), and 8 L ha⁻¹ + 240 μm (68.9%) stood out, maintaining consistent performance over time and ranking among the top five in integrated temporal efficacy. In conclusion, the interaction between operational parameters significantly influences application quality and disease control, with specific combinations optimizing coverage, deposition, and drift reduction.
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Reconhecimento dos alunos surdos do ensino superior na UFES
(Universidade Federal do Espírito Santo, 2025-08-14) Santos, Ariany dos; Machado, Igor Suzano; https://orcid.org/0000-0003-4843-9664; http://lattes.cnpq.br/3882899105315228
; https://orcid.org/0009-0003-7223-2927; http://lattes.cnpq.br/8707984679623215
; Losekann, Cristiana; https://orcid.org/0000-0002-9043-6099; http://lattes.cnpq.br/6484935860818055; Stumpf, Marianne Rossi; https://orcid.org/0000-0002-6349-1260
In this research, our study premise is to investigate situations of disrespect regarding the recognition and provision of opportunities for deaf students in an inclusive manner, ensuring accessibility in higher education at the Federal University of Espírito Santo (UFES). Our foundation is primarily based on the guarantee of educational rights, aligned with the legal frameworks established in the 1988 Federal Constitution, in support of the inclusion of deaf students at UFES. One of the theoretical frameworks we draw upon is Axel Honneth’s “Theory of Recognition,” as discussed by Will Kymlicka and other philosophers, particularly in relation to the mutual understanding of deaf students. We explore how the act of educating these learners functions within academic settings and how our cultural traditions interpret and engage with the culture of these individuals. This includes examining the various forms of adaptation necessary to ensure genuine equity and respect for their differences and distinct cultures. The reflections we present allow us to identify the situations that deaf students have experienced, or continue to experience, throughout their educational journey at UFES. These insights help us to rethink how these individuals should be recognized, understood, and supported, as guaranteed by law, from an equity-based perspective. This encompasses their right to remain in academic spaces during their education and specialization. From this, we analyze whether the social and political conditions are genuinely prepared and committed to embracing and supporting this population. Despite being a minority, it is essential that deaf students are recognized linguistically and socially valued in a dignified way, thereby ensuring their academic rights are upheld.
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DECISÃO Nº 63/2025
(2025-10-03) Conselho de Ensino, Pesquisa e Extensão
O CONSELHO DE ENSINO, PESQUISA E EXTENSÃO DA UNIVERSIDADE FEDERAL DO ESPÍRITO SANTO, NA SESSÃO ORDINÁRIA DO DIA TRÊS DE OUTUBRO DE DOIS MIL E VINTE E CINCO, DECIDIU, POR UNANIMIDADE, ALTERAR AS DECISÕES N° 26, DE 9 DE MAIO DE 2025, N° 36, DE 16 DE JUNHO DE 2025, N° 49, DE 28 DE JULHO DE 2025, E N° 55, DE 25 DE AGOSTO DE 2025, DESTE CONSELHO, ALTERANDO, PARA COMPLEMENTO DE MANDATO, A REPRESENTAÇÃO DISCENTE NESTE CONSELHO, QUE PASSA A VIGORAR CONFORME QUADRO ABAIXO, TUDO CONFORME CONSTA DO DOCUMENTO AVULSO Nº 23068.015567/2025-68.