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A vida em Jogo: esportificação e sociabilidades a partir do Breaking
(Universidade Federal de São Carlos, 2026-07-20)
Alvarenga, Gabriela Seta
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Toledo, Luiz Henrique de
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http://lattes.cnpq.br/5366260223109463
;
https://orcid.org/0000-0002-5354-5923
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http://lattes.cnpq.br/8051190372295590
This dissertation analyzes the sportification of Breaking through its incorporation into the Olympic circuit, seeking to understand how a cultural practice from the Hip Hop scene is reconfigured in terms of performance, evaluation, and legitimacy. Based on an ethnographic approach, it follows the transformation of battles into measurable performances regulated by standardized criteria and judging systems. In critical dialogue with Norbert Elias, it argues that this process is not limited to the regulation of violence, but involves forms of translation that tension the cultural dimension of the practice and produce effects of relative sportification. Finally, it demonstrates that these logics extend beyond the sporting field and spread into everyday life, contributing to the production of subjects engaged in permanent regimes of performance, comparison, and self-management.
Utilização de transfer learning em redes neurais convolucionais: Identificação de Alzheimer em imagens de ressonância magnética
(Universidade Federal de São Carlos, 2026-07-21)
Kummer, Luís Henrique Nagamatsu
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França, Celso Aparecido de
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http://lattes.cnpq.br/4547836128892982
The Alzheimer’s Disease is the main cause of dementia in the world and due to it not having a cure, the treatment must be started as soon as possible to minimize the symptoms The objective of this paper is to apply transfer learning techniques to a convolutional neural network (CNN), aiming to identify dementia patterns in Magnetic Resonance Imaging and assist in Alzheimer’s Disease diagnotics. Applying the network can help the clinical decision making, by reducing false negatives of anomalies that might not be noticed at first. The model was developed using VGG19 as base and Python libraries such as Tensorflow and Augmentor. The model reached an accuracy of 98.44% on the validation.
Engenharia de nanoestruturas de óxido de cobre via plasma não térmico para redução eletroquímica de CO2
(Universidade Federal de São Carlos, 2026-07-24)
Mestriner, Eloá Rodrigues
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Mascaro, Lucia Helena
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http://lattes.cnpq.br/9130022476352844
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https://lattes.cnpq.br/8219299536584388
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Souza, Fernanda de Lourdes
ENGINEERING OF COPPER OXIDE NANOSTRUCTURES VIA NON-THERMAL PLASMA FOR THE ELECTROCHEMICAL REDUCTION OF CO2 investigated the development and optimization of nanostructured electrocatalysts based on copper and CuOx/ZnO, employing defect engineering and structural modification via radio-frequency non-thermal plasma, while evaluating the impact of different gaseous atmospheres. The results demonstrate that post-synthesis modifications on CuOx over metallic mesh optimized the catalytic interface and favored the formation of C2+ products, achieving Faradaic efficiencies (FE) greater than 70%. However, these modulations were limited to the catalyst surface, proving ineffective for suppressing the hydrogen evolution reaction and for the robust propagation of carbon chains. The application of non-thermal plasma treatment prior to the anodization step induced profound structural modifications that extended to the material's bulk, creating preferential nucleation sites. This resulted in a decrease in hydrogen formation rates (FE≤ 25%) and directed C-C coupling routes depending on the gaseous atmosphere. Thus, N2 plasma favored selectivity for n-propanol (FE= 14%), while CO2 plasma stabilized ketones (FE= 7%) and conferred notable integrity to the film. The methodological expansion to CuO/ZnO heterostructures proved that CO2 plasma acts beyond oxidation, serving as an efficient promoter of atomic diffusion and structural consolidation. The controlled incorporation of zinc induced electronic modulation, increasing the electrochemically active surface area, significantly suppressing hydrogen reduction (FE = 11%), favoring the alcohol formation route, primarily ethanol (FE ≥ 25%). Adjusting the plasma exposure time allowed for switching the predominant selectivity between C3 and C2 products. In summary, this work establishes that the synergy between the choice of support, controlled bimetallic integration, and defect induction via non-thermal plasma represents a robust and innovative approach for the rational design of selective catalysts.
Avaliação preliminar da produção de etanol a partir de farinha de milho por levedura termotolerante
(Universidade Federal de São Carlos, 2026-07-24)
Anjos de Mendonça, Júlio Augusto
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Andrade Lemos, Diego
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http://lattes.cnpq.br/1174905383146257
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Colli Badino Junior, Alberto
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http://lattes.cnpq.br/6244428434217018
The Brazilian industry of sugar-based energy has, over the last several years, experienced a surge in the diversity of its biomass sources with the rise of corn-based ethanol, most noticeably in the central-west region of the country. However, production of ethanol in Brazil is not without its challenges, as maintaining fermentation vats within an optimal temperature range proves to be particularly difficult when they carry out an exothermic reaction in a tropical climate prone to heat waves and strong summer seasons. The present study has been carried out with the purpose of assessing the viability of utilizing the thermotolerant yeast strain Saccharomyces cerevisiae LBGA-01 in the production of corn-based ethanol and potentially enabling an industrial-scale process which operates at a more doable temperature range. The experiment has been conducted at bench-scale, using corn flour with a starch content of 66% m.m-1 and started off with sequential hydrolysis and fermentation (SHF) processes at 36 and 38 °C and initial glucose concentrations of 100 and 200 g.L⁻¹. The conditions of assay SHF-200-38 were chosen for the following fermentations for its high efficiency value of 94.5%, and thus the reaction’s kinetics were mathematically modeled based on the Andrews-Levenspiel kinetic model. The saccharification step at 38 °C was modeled after the Michaelis-Menten model with product-driven inhibition, obtaining a residual standard deviation value of 4.13%. Based on the approximated parameters, a simulation of the simultaneous saccharification and fermentation (SSF) assay was performed, and the reaction was carried out at 38 °C with concentrations of glucose and starch equivalent to 183 g.L⁻¹ glucose. The SSF assay reached a final concentration of 92.29 g.L⁻¹ ethanol and efficiency of 94.62%, with a glucose depletion time of 34 h, shorter than the 36 h it took for depletion in the SHF assay and in literature-reported experiments. The mathematical modeling of the SSF assay revealed that the model that best represented the process was that of Levenspiel (no inhibition by substrate), pointing to there not being any significant amount of inhibition by glucose in the concentration range of the conducted SSF. The LBGA-01 strain proved to be capable of withstanding and thriving at such a high temperature as 38 °C, promising for an industrial process with simpler and cheaper heat-exchanging needs.
A Kallipolis de Platão: entre a episteme do bem e as imagens poéticas
(Universidade Federal de São Carlos, 2026-07-24)
Santos, Mateus Lima dos
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Bolzani Filho, Roberto
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http://lattes.cnpq.br/2799608595434302
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Souza, Eliane Christina de
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http://lattes.cnpq.br/5658382257368048
Cette thèse fait face à un problème concernant la réflexion politique de Platon dans La République. Bien que la Kallipolis soit décrite comme une cité imaginée en paroles, c’est-à-dire une image, le dialogue propose que, une fois inaugurée, elle devrait expulser les producteurs d’images. L’argument contre la production imagière est construit autour d’une double accusation, à savoir : les produits de la mimèsis seraient inutiles et dangereux. Inutiles parce que les imitateurs ne suivraient pas les prescriptions d’un utilisateur qui détient l’épistémè ; dangereux parce qu’ils pourraient renforcer la partie irascible de l’âme. Cette thèse vise à dévoiler l’aspect politique de cette accusation qui est soutenue par une hiérarchie entre les savoirs dont le sommet est l’épistémè du bien et, ensuite, à défendre le caractère polysémique de l’image. Si, d’un côté, elle peut être dangereuse entre les mains de ceux dont la plus grande préoccupation est le plaisir du public, de l’autre, elle peut être utilisée comme un instrument pour diagnostiquer le mauvais état d’un corps politique. Dans ce cas, les images sont les moyens par lesquels on espère atteindre la guérison d’une cité malade.
Raw bioaccumulation and hematological biomarker data from the estuarine fish Centropomus parallelus following SePM exposure - FAPESP Proc 2019/08491-0
(Universidade Federal de São Carlos, 2026-07-24)
Maraschi, Anieli Cristina
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Monteiro, Diana Amaral
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http://lattes.cnpq.br/5896110724916724
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http://lattes.cnpq.br/0358411551730768
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https://orcid.org/0000-0001-8653-9709
Dados sobre revistas indexadas no Portal de Periódicos da UFSCar
(Universidade Federal de São Carlos, 2026-07-27)
Klein, Luiza
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Zafalon, Zaira Regina
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Fernandes, Ana Quintina de Oliveira
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http://lattes.cnpq.br/6178789718503394
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http://lattes.cnpq.br/1584935790390793
Processamento ultrarrápido do eletrólito sólido Na₃Zr₂Si₂PO₁₂ pela técnica de reactive flash sintering
(Universidade Federal de São Carlos, 2026-07-28)
Campos, Leonardo Jesus de
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Jesus , Lilian Menezes de
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http://lattes.cnpq.br/1731168664454710
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https://orcid.org/0000-0002-6265-5542
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Rodrigues, Ana Candida Martins
Solid-state sodium batteries have attracted increasing interest due to the abundance and low production cost of sodium, as well as the potential for improved safety compared to batteries employing flammable liquid electrolytes. Among the most promising solid electrolytes is Na3Zr2Si2PO12 (NZSP), a member of the NaSICON family, which exhibits high ionic conductivity. However, its conventional processing requires calcination and sintering steps at high temperatures and long dwell times, promoting sodium and phosphorus volatilization and increasing energy consumption. In this work, Reactive Flash Sintering (RFS) was investigated as an alternative route to promote both NaSICON phase formation and densification of NZSP in a single processing step. The effects of the maximum applied power, dwell time, and power ramp rate on phase formation, microstructure, and electrical properties were systematically evaluated. The results demonstrated that the processing condition of 150 mW mm-3, combined with a power ramp rate of 30 mW mm-3 min-1 and a dwell time of 15 min, enabled the production of samples with a relative density of approximately 96%, a total ionic conductivity of 1.14 ± 0.11 mS cm-1, and an activation energy of 0.30 ± 0.01 eV. In comparison, conventionally processed samples exhibited lower conductivity (0.75 ± 0.02 mS cm-1) and higher activation energy (0.35 ± 0.01 eV). The use of sacrificial powder during conventional sintering, aiming to reduce the loss of volatiles, such as sodium or phosphorus, at high temperatures, increased the conductivity to values comparable to those obtained by RFS, indicating that the main advantage of the electric field-assisted process is associated with the reduction of volatile species losses during processing. The results demonstrate, for the first time, the feasibility of producing NZSP electrolytes by Reactive Flash Sintering directly from unreacted precursor powders, highlighting the potential of this technique as a rapid and energy-efficient route for the fabrication of solid electrolytes.
Mudanças no uso e cobertura do solo e seus impactos na erosão hídrica e no potencial natural de erosão na sub-bacia do córrego Santa Maria do Leme
(Universidade Federal de São Carlos, 2026-07-29)
Landgraf, Isabely Sanches
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Araujo, Mélory Maria Fernandes de
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http://lattes.cnpq.br/8882512834751864
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Santos, Franciane Mendonça
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http://lattes.cnpq.br/5344692835119505
This study analyzed water erosion susceptibility and Natural Erosion Potential (NEP) in the Santa Maria do Leme Stream watershed, located in São Carlos, São Paulo, Brazil, considering land use and land cover changes between 2014 and 2024. The research aimed to evaluate soil loss potential through the application of the Revised Universal Soil Loss Equation (RUSLE), combined with geoprocessing techniques, temporal land use analysis, and assessment of Permanent Preservation Areas (PPAs). Environmental and geospatial data were used, including a Digital Elevation Model generated from ALOS/PALSAR satellite data, pedological information from IBGE, climatic data from INMET, and land use and land cover maps from the MapBiomas platform. Based on these data, the RUSLE factors were estimated: rainfall erosivity, soil erodibility, relief, cover and management, and conservation practices. PPAs were also delimited according to the Brazilian Forest Code, considering 30-meter buffers for watercourses and 50-meter buffers for springs. The results showed significant land use changes over the analyzed decade, with the expansion of urbanized areas and mixed-use mosaics to the detriment of pasture areas and sugarcane cultivation. The RUSLE factors indicated that water erosion in the watershed is strongly associated with anthropogenic changes, especially the reduction of vegetation cover and the expansion of more intensive land uses. The generated maps indicated a predominance of soil losses classified as slight to moderate, with punctual occurrences of areas classified as moderate to high susceptibility. In contrast, the NEP results remained relatively stable between 2014 and 2024, with a predominance of the very low class, demonstrating that natural factors alone do not represent high erosive fragility in the watershed. In PPAs, the low NEP and soil loss values reinforced the importance of vegetation in soil protection, reduction of surface runoff, and conservation of water resources. Therefore, the integration of geotechnologies, temporal analysis, and environmental modeling through RUSLE proved to be efficient for identifying areas susceptible to water erosion and supporting environmental planning, territorial management, and PPA conservation actions.
Resposta autonômica cardíaca durante e após exercício máximo é preservada em adultos jovens fisicamente ativos com COVID longa
(Universidade Federal de São Carlos, 2026-07-29)
Lima, Marco Antonio de
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Pereira, Guilherme Borges
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http://lattes.cnpq.br/0159911069166581
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https://orcid.org/0000-0002-5295-6229
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http://lattes.cnpq.br/2444405525040960
Long COVID (LC) is a condition that generally manifests within three months after acute SARS-CoV-2 infection, with symptoms persisting for at least two months and without an alternative diagnostic explanation. Evidence suggests that alterations in the autonomic nervous system (ANS) may contribute to manifestations such as fatigue, palpitations, exercise intolerance, and post-exertional malaise. Heart Rate Variability (HRV) is a widely used non-invasive method for assessing autonomic modulation and its responses to the physical stress imposed by cardiopulmonary exercise testing (CPET). The present study aimed to investigate the autonomic response of individuals with LC during and after CPET using linear and nonlinear HRV analyses, comparing them with a control group (CON) previously infected with SARS-CoV-2 but without persistent symptoms. Thirty-eight physically active young adults aged 18 to 40 years participated in the study: 18 with LC and 20 previously infected controls without persistent symptoms. Analyses were performed at nine time points: rest, peak exercise, immediately after exercise, and at 3, 5, 10, 30, and 60 minutes and 24 hours after the test. This was an observational study with continuous recording of RR intervals using a heart rate monitor, followed by processing in Kubios HRV software. CPET was performed on a treadmill using the Bruce protocol. Analyses were conducted in RStudio (p < 0.05). After filtering the RR intervals (>95% normal beats), linear and nonlinear HRV metrics were extracted at the nine time points. Normality and homogeneity were assessed using the Shapiro-Wilk and Levene tests. Between-group comparisons were performed using Student's t-test or the Mann-Whitney test, according to data distribution. For analyses over time, three-way ANOVA was applied, followed by post hoc comparisons with Tukey adjustment or false discovery rate (FDR) control. Kaplan-Meier curves were used to estimate the time to autonomic recovery, and the log-rank test was used to compare groups. Associations between age and pNN50 were assessed using Pearson's or Spearman's correlation. The discriminative accuracy of the metrics was investigated using ROC curves and AUC comparisons according to the DeLong method. The hypothesis was that the LC group would exhibit greater vagal withdrawal at peak exercise and slower parasympathetic reactivation. No consistent overall differences were observed between the LC and CON groups for most metrics, with only isolated variations across subgroups and sexes. The findings did not support the hypothesis of autonomic impairment associated with LC in this sample, suggesting that potential effects may be subtle, compensated for by physical fitness, or not detectable by the metrics used. These findings provide data for future investigations and rehabilitation strategies.
Educação como investimento: arqueogenealogia da racionalidade neoliberal na política educacional brasileira
(Universidade Federal de São Carlos, 2026-07-30)
Rocha , Efraim Igor Santana
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Sargentini, Vanice Maria Oliveira
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http://lattes.cnpq.br/1406919572611392
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https://lattes.cnpq.br/3091840946017150
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Sá , Israel de
Esta investigación examina la constitución histórica y las condiciones de posibilidad del enunciado “educación como inversión” en la política educativa brasileña, considerándolo como una regularidad discursiva que atraviesa diferentes coyunturas históricas y reorganiza las formas de comprender, justificar y gobernar la educación pública. Se parte de la problemática del avance de la racionalidad neoliberal, vinculada a formas contemporáneas de conservadurismo, que producen nuevas estrategias de gestión, eficiencia administrativa y control institucional, redefiniendo los sentidos atribuidos a la escuela y a sus sujetos. El objetivo general consiste en analizar, desde una perspectiva arqueogenealógica, la constitución, la permanencia y las mutaciones del dispositivo educativo gerencial, identificando los procesos mediante los cuales determinados enunciados son reactualizados y pasan a orientar tanto la formulación de políticas públicas como la producción de subjetividades en el contexto educativo brasileño. Para ello, la investigación se fundamenta en los Estudios Discursivos Foucaultianos (EDF), en diálogo con la tradición francesa del Análisis del Discurso, movilizando, principalmente, los conceptos de «discurso», «enunciado», «archivo», «dispositivo» y racionalidad neoliberal. El corpus está constituido por un amplio conjunto de materialidades discursivas, que comprende documentos normativos y legales producidos desde el período de la Dictadura Militar hasta la Nueva República, además de enunciados procedentes del discurso político contemporáneo, especialmente aquellos difundidos en prácticas mediáticas y espectacularizadas relacionadas con las políticas educativas recientes. El análisis pone de manifiesto que la racionalidad neoliberal es instrumentalizada como un proceso de rearticulación discursiva capaz de actualizar mecanismos históricos de administración y normalización bajo nuevos regímenes de verdad. Asimismo, se demuestra que los programas de militarización escolar y otras políticas contemporáneas constituyen actualizaciones de este dispositivo, reorganizando las prácticas institucionales y legitimando intervenciones sobre la escuela pública mediante la producción de sujetos —estudiantes y docentes— autogestionados y permanentemente evaluables. Se concluye que la noción de «educación como inversión» se configura como una matriz discursiva que orienta las políticas públicas, redefine las finalidades de la educación y participa en la producción de modos específicos de gobernar a la población y de constituir subjetividades compatibles con las exigencias de la racionalidad neoliberal.
A verdade neoliberal em campanha: o capital humano e a produção do inimigo interno em enunciados sobre a educação pública
(Universidade Federal de São Carlos, 2026-07-30)
Rocha , Efraim Igor Santana
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https://lattes.cnpq.br/3091840946017150
A ascensão da extrema-direita no cenário político contemporâneo tem se tornado um dos principais temas de preocupação em diferentes áreas das Ciências da Linguagem, que reconhecem o perigo da reprodução do discurso de ódio — amplamente compartilhado de forma organizada e sistemática por muitos porta-vozes desse espectro político ao redor do mundo. No Brasil, esse fenômeno ganhou um novo capítulo de destaque durante as eleições municipais para a prefeitura de São Paulo (SP), realizadas em 2024, quando os debates eleitorais se transformaram em espetáculos midiáticos de violência explícita — tanto física quanto simbólica —, revelando de forma clara o atual cenário polarizado da sociedade brasileira. Diante dessa emergência, a análise do discurso político-eleitoral torna-se fundamental para compreendermos os mecanismos de disputa ideológica em jogo nas diferentes candidaturas, com destaque para Pablo Marçal (PRTB), Marina Helena (Novo), Ricardo Nunes (MDB) e Guilherme Boulos (PSOL). Os debates analisados ocorreram nos eventos promovidos pelo Estadão, Terra e pela Fundação Armando Alvares Penteado (em 14 de agosto de 2024) e pela TV Cultura (em 15 de setembro de 2024). Resultados parciais indicam que esses candidatos priorizaram temas como “trabalho”, “segurança pública” e “educação” para instrumentalizar sensibilidades como o medo, o ódio e o ressentimento, com o objetivo de convencer os eleitores a aderirem a determinadas posições ideológicas. Para essa análise, utilizamos os aportes teóricos dos Estudos Discursivos Foucaultianos (EDF), com ênfase nos conceitos saber/poder (Foucault, [1971] 2019) e formação discursiva (Foucault, [1969] 2008), a fim de problematizar os discursos proferidos durante os referidos debates eleitorais.
Armazenamento de hidrogênio em compósito Mg-Fe produzido por reofundição e limagem
(Universidade Federal de São Carlos, 2026-07-30)
Santos, Carlos Vinicius de Paes
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Leiva, Daniel Rodrigo
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http://lattes.cnpq.br/6576844591900987
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http://lattes.cnpq.br/8708708385584665
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Leiva, Daniel Rodrigo
One way to enable the use of renewable energy would be to produce hydrogen to act as an energy carrier. However, its storage is a challenge. An alternative would be to store it in a solid state using metal hydrides. Among the hydrides, MgH2 presents excellent gravimetric capacity and cyclability. However, its slow kinetics, associated with operating temperatures >300°C, limit its application. To overcome these limitations, additives are used along with processing techniques. Iron is already employed, showing remarkable performance depending on how it is incorporated. In this research, a magnesium composite with 8% at. Fe was synthesized by rheocasting. The ingot was characterized to verify the iron distribution, and the selected region was processed by manual and rotary filing. Part of the filings was exposed to air; the remainder was ground for 30, 60, and 120 minutes. The materials were characterized by XRD, SEM, DSC, TG, volumetric tests in a Sieverts-type apparatus, and TEM. Fe was heterogeneously distributed throughout the ingot, with the lower region having the highest content (average of ~10.42% wt. Fe). The material containing Fe exhibited superior kinetics and a negligible incubation period when compared to Mg; furthermore, it showed resistance to air exposure. The addition of graphite provided further improvement in kinetics, reaching a transformed fraction of approximately 0.4 in 120 minutes. The apparent activation energy was 160.91 kJ/mol and 135.65 kJ/mol for rotary-processed and manually processed Mg, respectively. For the material containing Fe, the apparent activation energy was 125.91 kJ/mol and 123.88 kJ/mol for rotary-processed and manually processed material, respectively. Therefore, the addition of Fe reduced the apparent activation energy of MgH2 desorption by ~23%.
Estudo do comportamento mecânico e formação de fases em aços 316l modificados com boro fabricados por manufatura aditiva
(Universidade Federal de São Carlos, 2026-07-31)
Lima, Luiz Henrique Quinquiolo Ribeiro de
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Otani, Lucas Barcelos
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http://lattes.cnpq.br/2519980413159984
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Gargarella, Piter
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http://lattes.cnpq.br/4641435644243916
The addition of boron to steels has been identified as a promising strategy for promoting microstructural refinement and increasing mechanical strength, particularly in materials produced by laser powder bed fusion (LPBF). However, the mechanisms responsible for these modifications are not yet fully understood. In this context, the present work investigated the effect of boron addition on alloys based on AISI 316L stainless steel produced by LPBF, comparing commercial 316L with the modified Mo3 and Mo4 alloys, both containing 0.75 wt.% boron and different molybdenum contents of 3.0 and 4.0 wt.%, respectively. Initially, the processing parameters were optimized using a Box-Behnken experimental design, resulting in the selection of 300 W laser power, 250 mm/s scanning speed, 70 µm hatch spacing, and 30 µm layer thickness. The alloys were characterized by scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), X-ray diffraction (XRD), and transmission electron microscopy (TEM). Additionally, the effect of cooling rate on microstructural evolution was evaluated by casting the alloys in a stepped mold, using different mold sections to obtain distinct cooling conditions during solidification. The cast samples were characterized by SEM, XRD, and hardness testing. The results showed that boron addition promoted grain refinement, reduced crystallographic texture intensity, and increased hardness and mechanical strength. The Mo4 alloy exhibited residual ferrite and Cr- and Mo-rich precipitates, with the Mo₃B₂ and Cr₂B phases identified by TEM. In the cast alloys, a reduction in cooling rate promoted an increase in interdendritic spacing and greater ferrite retention. The modified alloys achieved ultimate tensile strengths above 1000 MPa, mainly associated with microstructural refinement and boride formation.
Uso do método do ponto material (MPM) para análise de ruptura hipotética de uma pilha de disposição de estéril e rejeito
(Universidade Federal de São Carlos, 2026-07-31)
Maciel, José Thiago da Silva
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Souza, Tiago de Jesus
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http://lattes.cnpq.br/3445673192218333
;
https://orcid.org/0000-0003-0127-337X
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http://lattes.cnpq.br/8956408929925354
The increasing adoption of filtered tailings stacks as an alternative to conventional tailings dams has intensified the need for tools capable of assessing not only the stability of these structures but also their post-failure behavior under large-deformation conditions. Although the Finite Element Method (FEM) is widely used in geotechnical engineering, its application to the simulation of mass movements is limited by significant mesh distortion during the evolution of failure. In this context, the Material Point Method (MPM) emerges as a promising alternative, allowing large deformations and the transport of the mobilized mass to be represented more consistently. This study aimed to evaluate the applicability of MPM in simulating the hypothetical failure of a Waste Rock and Tailings Disposal Stack (PDER), investigating the evolution of the mass movement and the runout distance of the mobilized material. As a case study, the Tamanduá PDER, located at the Brucutu Mine in São Gonçalo do Rio Abaixo, Minas Gerais, Brazil, was analyzed. A two-dimensional numerical model was developed using the open-source software ANURA3D, employing geotechnical parameters obtained from laboratory tests carried out on the tailings, waste rock, and foundation materials. Initially, the stability condition of the stack was verified using the design parameters. Subsequently, three hypothetical failure scenarios were evaluated, representing progressive levels of degradation of the geotechnical properties: (A1) reduction of the strength and stiffness parameters of the starter dyke; (A2) maintenance of the dyke degradation combined with a reduction in the strength and stiffness parameters of the tailings; and (A3) combined degradation of the starter dyke and waste rock, representing the most critical condition analyzed. The simulations reproduced the formation of the failure surface, the temporal evolution of displacements, the velocity fields, and the final runout distance of the mobilized mass in three representative sections of the stack. The results showed that the progressive degradation of the geotechnical properties led to a significant increase in the mobilization of the mass, with substantial increases in displacements, velocities, and runout distance, reaching approximately 162 m in the most critical condition analyzed. The results demonstrated that MPM adequately represents mechanisms associated with large deformations and post-failure behavior, allowing the continuous evolution of the mass movement to be tracked. It is concluded that the Material Point Method is a robust tool for analyzing hypothetical failures of filtered tailings stacks, enabling the estimation of the propagation of the mobilized mass and supporting risk assessment studies and the planning of mitigation measures. In addition to demonstrating the applicability of MPM to a real mining case, this research contributes to expanding its use in Brazilian geotechnical engineering by proposing an analysis methodology based on progressive degradation scenarios of the materials composing the stack.
Língua Espanhola nos Centros de Estudo de Línguas do Estado de São Paulo: análise de legislações e das Diretrizes Curriculares (2020)
(Universidade Federal de São Carlos, 2026-07-31)
Gulharo, Yara Regina
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Yokota, Rosa
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http://lattes.cnpq.br/9230517686993400
;
https://orcid.org/0000-0002-1672-1430
;
http://lattes.cnpq.br/8744103142016861
This master's thesis examines Spanish language teaching within the State of São Paulo's Language Study Centers (CEL SP) project, established in 1987, with a focus on the Curricular Guidelines for Language Study Centers (in Portuguese, Diretrizes Curriculares para os Centros de Estudo de Línguas) (2020). The motivation for this study is linked to the researcher's personal and professional trajectory within the context of CEL SP, as a student, intern, Spanish language teacher, and supervisor of teaching interns. The research objectives are: (1) to contextualize the publication of the Curricular Guidelines through an analysis of legislative documents regulating the CEL SP and (2) to analyze the document itself, with an emphasis on the section dedicated to Spanish teaching. This is a qualitative, documentary-based study that analyzes decrees, resolutions, and the Curricular Guidelines themselves. The study highlights that CEL SP serves as an important space for resistance and the preservation of Spanish language teaching within the São Paulo state public school system, both before and after the repeal of Law No. 11,161/2005. Analysis of the documents demonstrates that, throughout its trajectory, the project underwent various reorganizations but remained characterized by the absence of specific curricular guidelines until the publication of the Curricular Guidelines in 2020. The research indicates that the document analyzed, despite having been published in 2020, is not based on contemporary documents and guidelines, such as the BNCC (National Common Curricular Base). However, it seeks to foster a critical, plurilingual, and intercultural approach to education. Furthermore, it is possible to observe the value placed on oral communication, in alignment with the governing legislative documents.
Modelagem da informação tecnológica baseada em patentes para a inovação
(Universidade Federal de São Carlos, 2026-07-31)
Zaniro, Dênis Leonardo
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Faria, Leandro Innocentini Lopes de
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http://lattes.cnpq.br/0767710394930118
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https://orcid.org/0000-0002-8369-1315
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Quoniam, Luc
Innovation has been researched and practiced in multiple ways in recent years and, despite certain nuances, this concept has evolved beyond the simple idea of introducing something new into the economic context to reflect the complexity involved throughout the entire innovation process. The literature also indicates that innovation processes are affected by different factors and depend on the availability of technological information. The primary source of technological information for innovation comes from patent documents; however, there are two major challenges to consider. The first is that the information describing the inventions behind patents may be difficult for different audiences to understand and does not represent the full complexity of technological information which, by definition, is multidimensional. The second is that information sources that may serve as inputs for innovation are usually disconnected and involve considerable volumes of data, creating obstacles for analytical strategies that are not based on computational approaches. Furthermore, certain patent and inventive databases are paid services, hindering access for communities characterized by scarce resources. Based on this context, the main objective of this research was to model technological information aimed at innovation in such a way that, within the resulting dataset, four informational perspectives coexist inseparably: inventive, encyclopedic, scientific, and industrial. An informational architecture is proposed, guided by a reference model and constituted through the integration of databases, classification schemes, and an inventive methodology. Multiple research methods were adopted and combined, with a predominantly exploratory objective and both quantitative and qualitative approaches. Due to the volume of data, computational techniques grounded in a set of algorithms were applied. For the construction of the informational model, the following components were used: the TRIZ methodology (the Russian acronym for Theory of Inventive Problem Solving) and TRIZ effects databases; the International Patent Classification; Wikipedia and Wikidata; the Lattes Curriculum; the National Classification of Economic Activities; and the Espacenet database. As a result, the resulting dataset provides millions of potential pathways connecting researchers, new technologies, and industrial sectors in Brazil. The use cases discussed provide evidence that, by integrating fragmented data from distinct sources into a single whole, according to the proposed methodological framework, it is possible to arrive at certain inventive insights that could not easily be mapped through the simple combination of the individual parts. Specifically, regarding the scientific perspective, a certified and expanded patent database derived from the Lattes Curriculum was achieved, overcoming the unitary patent-based perspective in order to attain a broad view of inventions necessary for integration into the model. From the STS (Science, Technology, and Society) perspective, this research is part of a context shaped by social demands and market dynamics under a constructivist approach, representing only one part of a larger and unfinished system and, therefore, subject to continuous evolution. Thus, it is considered that the results obtained and their subsequent developments may contribute to strengthening the connections between research, technology, and industry in Brazil.
Otimização de parâmetros operacionais no tratamento eletroquímico descentralizado de efluente real contendo glifosato
(Universidade Federal de São Carlos, 2026-08-01)
Mandelli, Cecília Montanha
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Ruotolo, Luís Augusto Martins
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http://lattes.cnpq.br/6167735734348703
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http://lattes.cnpq.br/5876631381345673
Electrochemical treatment of wastewater is a promising alternative for reducing organic pollutant loads. Glyphosate herbicide is widely used in agriculture, and the washing of its containers generates significant volumes of hazardous wastewater. This study investigated the optimal conditions for the electrolysis of a real glyphosate-contaminated effluent, considering treatment time, energy consumption, and operational costs. The experiments were carried out using a flow-through electrochemical reactor equipped with a boron-doped diamond (DDB) anode. A factorial design was employed to evaluate the effects of current density (10–30 mA cm⁻²) and initial organic load (100–300 mg TOC L⁻¹). Total organic carbon (TOC), chemical oxygen demand (COD), and cell potential were monitored throughout the experiments. The use of a low-cost turbulence promoter improved mass transfer, increased mineralization efficiency, and reduced energy consumption, while temperature control showed minimal influence. The application of a current density of 30 mA cm⁻² provided the best balance between treatment time and energy efficiency. Predictive models were developed to estimate electrolysis time and energy consumption. Operational costs ranged from USD 1.71 m⁻³ to USD 7.09 m⁻³, with values between USD 3.55 m⁻³ and USD 4.37 m⁻³ obtained for effluents containing 300 mg TOC L⁻¹ treated at 10–30 mA cm⁻², demonstrating the feasibility of the process even under conditions of high organic load. These results contribute to the development of optimized and economically viable electrooxidation systems for the treatment of pesticide-contaminated wastewater, supporting the sustainable management of agricultural wastewaters.
A path toward 5G NR PHY acceleration: the LDPC offloading on BlueField-3 DPU
(Universidade Federal de São Carlos, 2026-08-03)
Brusse, Vlademir
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Verdi, Fábio Luciano
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http://lattes.cnpq.br/9143186843657940
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https://orcid.org/0000-0002-5455-8910
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http://lattes.cnpq.br/1620745795070108
The transition toward AI-native Radio Access Network (RAN) architectures further intensifies the demand for cloud infrastructure resources, as distributed intelligence, machine learning inference, and real-time data analytics become integral components of future RAN deployments. Containerized and virtualized network functions in Cloud RAN environments increasingly rely on hardware acceleration and workload offloading to meet the stringent latency, throughput and energy efficiency requirements of Fifth Generation (5G) Advanced and emerging Sixth Generation (6G) mobile networks. Within the 5G New Radio (NR) Physical Layer (PHY), Low-Density Parity-Check (LDPC) decoding represents a computationally intensive workload that depletes host CPU resources. While offloading to Data Processing Unit (DPU) offers general purpose core relief, it introduces systemic latency overheads. This research project evaluates an acceleration framework that offloads the 5G NR LDPC encoding and decoding pipeline from an OpenAirInterface (OAI) x86 host to an ARM-based NVIDIA BlueField-3 DPU utilizing the Arm RAN Acceleration Library (ArmRAL) over a Communication Channel. Hardware acceleration provides several benefits for 5G NR. Specialized accelerators such as Graphics Processor Unit (GPU), Field-Programmable Gate Array (FPGA), and DPU execute computationally intensive PHY functions in parallel, significantly increasing throughput while reducing processing latency to meet the stringent timing requirements of 5G. They also improve energy efficiency by delivering higher performance per watt than general-purpose CPUs. In addition, offloading functions such as LDPC decoding, Fast Fourier Transform (FFT), and beamforming relieves the host CPU, allowing it to focus on higher-layer protocol processing, scheduling, and network management. These advantages improve system scalability and make hardware acceleration a key enabler of cloud-native Open RAN deployments. In this work the ArmRAL LDPC kernels on the BlueField-3 ARM Cortex-A78AE cores are functionally correct, producing output bit-identical to the OAI software baseline as verified through Block Error Rate (BLER)–Signal-to-Noise Ratio (SNR) characterization under Additive White Gaussian Noise (AWGN) and Tapped Delay Line A (TDL-A30) fading channels, and execute competitively with the x86 software baseline. However, the host-visible per-CB Communication Channel (Comch) latency exceeds the slot budget by two orders of magnitude, producing a substantial Flow Completion Time (FCT) slowdown and energy efficiency degradation relative to the OAI software baseline across end-to-end experiments. Our results show that the bottleneck is the per-CB Comch framework overhead between the host and the DPU, rather than ARM compute capability or Peripheral Component Interconnect Express (PCIe) payload transfer, identifying host-visible Comch latency as the dominant architectural barrier to transparent lookaside PHY acceleration and quantifying its impact on FCT, throughput, and gross energy consumption relative to the OAI software baseline. Future work directions include persistent Comch contexts, Data Center Infrastructure-on-a-Chip Architecture (DOCA) Direct Memory Access (DMA)-based data paths, and slot-level OAI interfaces approaching an inline acceleration model.
Recursos próprios, custos de transação e capacidade efetiva de execução orçamentária: uma análise da UFSCar
(Universidade Federal de São Carlos, 2026-08-05)
Mattos, Camilla Piai de
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Almeida, Luiz Manoel de Moraes Camargo
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http://lattes.cnpq.br/5053214724598522
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https://orcid.org/0000-0003-3066-9170
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http://lattes.cnpq.br/3065102326354114
The management of own-source revenues has become increasingly relevant in the context of federal universities, particularly in light of fiscal constraints and instability in the execution of discretionary resources. This study analyzes the management of own-source revenues at the Federal University of São Carlos (UFSCar) from 2021 to 2025, based on Transaction Cost Theory (TCT), with the aim of understanding the institutional conditions that influence the conversion of revenue collection into effective budget execution capacity. The research is characterized as a single-case study of a descriptive-explanatory nature, developed through a predominantly qualitative approach, with complementary use of quantitative data. Data were obtained through documentary analysis of institutional reports, regulations, government budget monitoring systems, and institutional records related to the operation of own-source revenue mechanisms by the Institutional Support Foundation (FAI). The results show that increased collection of own-source revenues does not automatically translate into greater spending capacity, as it remains subject to institutional mechanisms related to budget incorporation, coordination among administrative units, and constraints arising from the fiscal environment. The analysis demonstrates that revenue collection, budget authorization, and execution operate according to different temporalities, generating mismatches that increase the need for institutional coordination and adaptation. From the perspective of TCT, these elements were interpreted as transaction costs associated with the management of own-source revenues in Federal Institutions of Higher Education (IFES), related to uncertainty, procedural requirements and stages, and the continuous need for coordination among different administrative levels. As an applied outcome of the research, a budget planning, monitoring, and replanning instrument developed within UFSCar’s Office of Administration and Budget Coordination was analyzed and understood as an organizational mechanism aimed at strengthening institutional coordination and supporting budget execution monitoring. It is concluded that the main obstacles to the use of own-source revenues do not arise from insufficient revenue availability, but from the institutional conditions that mediate their incorporation and execution within the federal public budgeting system.