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A implementação do modelo dialógico de convivência no contexto escolar e a concepção da cultura de paz
(Universidade Federal de São Carlos, 2025-11-26)
Gonçalves, Rogério Festucci
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Silva, Alexandre Rodrigo Nishiwaki da
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https://lattes.cnpq.br/8697942957516547
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https://lattes.cnpq.br/8493170744602494
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Ciríaco, Klinger Teodoro
Esta investigación, desarrollada en el marco del Programa Profesional de Posgrado en Educación de la Universidad Federal de São Carlos, dentro de la línea de investigación Procesos Educativos – Lenguas, Currículo y Tecnologías, centró sus reflexiones y análisis en la implementación del Modelo Dialógico de Convivencia (MDC) en el contexto escolar y el concepto de Cultura de Paz. El objetivo general de la investigación fue comprender cómo la implementación de este modelo puede influir y contribuir a la construcción de un entorno socioafectivo más ético. Profesionales de diferentes áreas de especialización participaron en esta investigación en el contexto de una Escuela Primaria Municipal en una ciudad del interior del Estado de São Paulo, que atiende a niños de educación infantil y a estudiantes de Educación para Jóvenes y Adultos (EJA). Se utilizó el método de investigación cualitativa y el enfoque comunicativo referenciados en Flecha, Gómez y Puigvert (2001). El rigor de la investigación, la producción y el análisis de datos fueron referenciados en Deslandes (1994, 2007) y Gil (2008). Esta investigación contribuyó a comprender la praxis escolar, guiada por el MDC (Comunicación y Desarrollo Modernos) y el concepto de Cultura de Paz, permitiendo así cambios en las estrategias a seguir. El Grupo Comunicativo posibilitó la evaluación del MDC durante su implementación, fortaleciendo los vínculos entre los participantes. Mediante enfoques dialógicos, comunicativos y colaborativos, se optimizó el funcionamiento del MDC según las necesidades estructurales y pedagógicas, lo que se tradujo en una mejora significativa del clima escolar y una reducción de los conflictos y la violencia. Consideramos que para mejorar la implementación del MDC es necesario capacitar a las personas involucradas, sensibilizándolas para un mayor compromiso, otro punto crucial, es que la participación de la comunidad escolar es un factor que necesita fortalecerse.
Elites legislativas federais e locais no Brasil: uma discussão teórica sobre formação, permanência e representatividade no poder
(Universidade Federal de São Carlos, 2025-11-26)
Costa, Mariana Plácida de Faria
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Andrade, Thales Haddad Novaes de
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https://lattes.cnpq.br/5882842888759363
This work theoretically discusses the differences between federal and local legislative elites in Brazil, focusing on the processes of formation, recruitment, permanence, and political action. Based on classical elite theories (Pareto, Mosca, and Michels) and contemporary reformulations (C. Wright Mills and Pierre Bourdieu), the research aims to understand how different forms of political, symbolic, economic, and social capital operate in structuring legislative elites in distinct contexts. The bibliographic review method, proposed by authors such as Gil (2008), Minayo (2001), and Codato (2018), is used to systematize relevant academic production on the subject. Brazilian authors such as Maria Teresa Kerbauy, Octaciano Nogueira, Bruno Speck, and César Zucco Jr. are mobilized to highlight the specificities of parliamentary action at different institutional levels. The analysis reveals distinct patterns of professionalization, recruitment, and power strategies, highlighting the implications of these differences for political representativeness and the functioning of democracy in the country.
Automated testing of mobile applications: methodological foundations and a practical device farm solution
(Universidade Federal de São Carlos, 2025-11-26)
Kuroishi, Pedro Henrique
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Vincenzi, Auri Marcelo Rizzo
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https://lattes.cnpq.br/0611351138131709
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https://orcid.org/0000-0001-5902-1672
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https://lattes.cnpq.br/8528323478356675
Software testing activities are essential in the software development life cycle since they help to find possible bugs before releasing the product for end users. Despite its importance, testing is still not widely applied when considering the mobile ecosystem. When testing a mobile application, it is essential to consider how to execute the tests (i.e., techniques, methods, approaches, tools, and frameworks) and where the tests run (i.e., on real devices, emulators, or in the cloud). Over the years, researchers and the industry have proposed various infrastructures to facilitate test execution. However, choosing the most suitable testing infrastructure depends on the application's scope, supported features, and the company's/user's needs. Moreover, there is still a need to explore ways to optimize testing for mobile applications.Objective: This thesis aims to provide an implementation of a solution capable of running tests on multiple devices, and these tests should validate the communication between the application and an external IoT device. Moreover, the second goal is to subsidize the testing process by providing an approach for test case generation and quality assessment. In both cases, we considered two hardware components of an Android device: Bluetooth and Location.Method: This thesis presents a different methodology comprising a collection of published and submitted work from the PhD, providing distinct contributions aligned with the defined research goals. Conclusion: During this PhD, we made solid contributions by providing means to enhance mobile application testing, focusing on the Android ecosystem. In this thesis, we presented four papers published in renowned Software Engineering journals and conferences, and one paper in the submission process. We expect that the results of this work will benefit not only the academic community but also practitioners.
Sistemas digitais de gestão na agricultura: benefícios e desafios na perspectiva dos produtores
(Universidade Federal de São Carlos, 2025-11-26)
Lima, Ewerton Barbosa
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Batalha, Mario Otávio
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https://lattes.cnpq.br/1015001063418091
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https://orcid.org/0000-0003-2711-3358
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https://lattes.cnpq.br/3990496408815875
Agriculture 4.0 holds the potential to reduce costs, optimize resource allocation, and increase productivity through the incorporation of emerging technologies. However, many farmers still display resistance to adopting such innovations. Among them, Farm Management Information Systems (FMIS) stand out for enabling integrated management of agricultural activities, thereby contributing to operational efficiency. In this context, the present dissertation sought to identify the factors influencing farmers’ adoption of FMIS, analyzing both the perceived benefits and the barriers that hinder their implementation. Between August and November 2023, a field survey was conducted with 103 farmers. The farms were located in the macro-regions of Dourados—including the municipalities of Dourados, Maracaju, Rio Brilhante, and Aral Moreira—and Corumbá—including Bonito, Guia Lopes da Laguna, Jardim, and Nioaque. Data analysis was performed using a PROBIT regression model. The results indicated that variables such as technical support, infrastructure, and investment capacity exerted a positive and significant effect on FMIS adoption, reinforcing the importance of public policies and incentive strategies to expand their implementation. Conversely, barriers such as risk aversion and lack of trust in the technology reduced the likelihood of adoption, in line with the literature highlighting uncertainty regarding benefits and perceptions of complexity as critical obstacles. Among the individual characteristics of farmers, education level showed a positive and significant impact, whereas age exhibited no statistical relevance in the model. Furthermore, farmers’ perceptions regarding improvements in productivity and product quality were not decisive factors for FMIS adoption, suggesting that those seeking productivity gains may instead turn to other technological innovations, such as agricultural mechanization and biotechnology. The adjusted model presented robust statistical measures, demonstrating the adequacy of the factors analyzed. The findings of this research are expected to contribute to a better understanding of the challenges and opportunities in FMIS adoption, providing valuable insights for researchers, technology developers, and policymakers. Based on this knowledge, it becomes possible to design more effective strategies to enhance adoption, ensuring that FMIS are developed in alignment with the needs and realities of farmers.
Análise experimental do comportamento hidráulico-mecânico de muros em solo residual reforçado com geogrelhas
(Universidade Federal de São Carlos, 2025-11-26)
Santos, Matheus Cardoso dos
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Portelinha, Fernando Henrique Martins
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https://lattes.cnpq.br/0791082339645058
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https://orcid.org/0000-0002-7481-7406
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https://lattes.cnpq.br/1812526828544037
The behavior of geosynthetic-reinforced soil walls under wetting conditions induced by climatic events represents a significant challenge, especially when fine-grained soils are used as backfill. This study aimed to experimentally investigate the hydro-mechanical behavior of geogrid-reinforced soil walls constructed with low-permeability residual soil and subjected to different rainfall and inundation regimes in large-scale tests. In addition, the study sought to evaluate construction elements capable of mitigating the effects of wetting. A design methodology for walls under unsaturated conditions was also proposed, accounting for the influence of rainfall events. Four physical models were constructed and tested, varying the internal drainage conditions, facing type, vertical spacing between reinforcements, and geogrid stiffness. The results indicated that, although matric suction decreased after rainfall events, a residual suction was maintained at levels sufficient to limit deformation mobilization and reduce tensile forces in the reinforcements. Evaporation during dry periods played a fundamental role in the partial recovery of suction levels. It was found that the use of sand cushions as internal drainage systems favored the redistribution of loads from the connection to the soil mass, while gabion facings although highly permeable resulted in larger displacements due to their lower stiffness. Reducing the vertical spacing between reinforcements proved to be the most effective strategy for controlling excessive displacements and deformations, even when lower-stiffness geogrids were used. Comparisons among the models showed that the smallest reinforcement spacing provided the best overall performance under rainfall and inundation, whereas models incorporating drainage elements exhibited intermediate behavior. Finally, the applicability of different tensile load prediction methods was evaluated, and the Kru method, proposed in this research, demonstrated the best agreement with the experimental results, as it incorporates unsaturated conditions and their effects on reinforcement mobilization.
Afetos e queixas de memória em pessoas idosas sem comprometimento cognitivo
(Universidade Federal de São Carlos, 2025-11-26)
Tavares, Patricia do Nascimento
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Schelini, Patrícia Waltz
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https://lattes.cnpq.br/6185333517392859
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https://orcid.org/0000-0002-2765-865X
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https://lattes.cnpq.br/2793052384716760
In the normal aging process, a decline in various cognitive functions is observed, with memory being one of these functions that deserves special attention, as it is a common complaint among older people and can compromise their functional capacity and consequently their quality of life. Positive affect has been identified as a protective factor against the risk of developing mental disorders and cognitive impairment in old age. Nationally, few researchers have dedicated themselves to investigating the influence of positive and negative affects on objective and subjective memory performance among older people. Thus, the present study had the general objective of verifying the relationship between subjective memory complaints (SMQ) and objective memory performance in older people without cognitive impairment. Specifically, the influence of affect and mood on performance in memory tasks and their subjective evaluation was investigated. Forty-four individuals, aged 60 years and older, residing in the municipality of São Caetano do Sul, participated in this research. Participants were pre-evaluated to identify the presence of signs of mild cognitive impairment using the Mini-Mental State Examination. To assess objective performance on memory tasks, the subtests of the WAIS-III scale (Arithmetic, Digits Forward, Digits Backward, and Letter-Number Sequencing) were used. To capture individuals' knowledge, perceptions, and feelings about subjective memory, the Memory Complaints Questionnaire (MAC-Q) was used, and to assess mood, the Geriatric Depression Scale (GDS) and the Geriatric Anxiety Inventory (GAI) were used. Positive and negative affect were investigated using the Positive and Negative Affect Scale (PANAS). Data analysis did not show a significant association between subjective memory complaints and objective performance. However, memory complaints were positively related to symptoms of anxiety and depression, with anxiety being the only significant predictor. Analyzing the relationship between sociodemographic and health variables in the subjective perception of memory, three distinct participant profiles were found, with worse subjective memory assessments reported among younger participants, up to 65 years of age, and among older participants, aged 75 and over. These results highlight the moderating role of mood disorders in the subjective perception of memory in aging. Further research with a larger sample size is suggested to allow for the generalization of the data.
A volatilidade das tendências de moda na era digital: impactos ambientais e socioeconômicos do modelo de consumo da geração Z
(Universidade Federal de São Carlos, 2025-11-26)
Ferreira, Sofia Yura Rodrigues
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Neves, Anne Alessandra Cardoso
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https://lattes.cnpq.br/5825341428803511
Fashion, as a social and cultural phenomenon, evolves alongside society and holds the power to express its behaviors, values, and contradictions. In contemporary times, there is a noticeable intensification in the consumption of ephemeral trends, driven by the globalization of information, the democratization of access to fashion, and, above all, the influence of social media. Generation Z, characterized by a strong digital presence, experiences a conflict between its ethical values, such as sustainability and social responsibility, and its desire for belonging, self-expression, and consumption, which contributes to the acceleration of production and disposal cycles. This study was developed through qualitative bibliographic research and aimed to analyze the consumption of fashion trends by exploring how social media influences Generation Z’s behavior and discussing the resulting environmental, social, and economic consequences. The specific objectives included understanding the role of fashion in identity formation, characterizing the fast fashion model, investigating Generation Z’s consumption habits, analyzing the influence of social media, and discussing the impacts generated by these dynamics. The literature review revealed that negative impacts, such as the intensified exploitation of natural resources, the increase in textile waste generation, and the deterioration of working conditions, do not stem solely from individual choices, but rather from a system that encourages excessive consumption and imposes behavioral and aesthetic standards. In this context, the fast fashion logic perpetuates social inequalities and undermines sustainable economic practices, highlighting the urgency of rethinking current production models. As a final reflection, the study proposes a collaborative approach involving consumers, civil society, the productive sector, and public authorities, aiming to build a fashion model that preserves its expressive and identity-driven nature, allowing individuals to communicate through clothing without neglecting the principles of ethics, sustainability, and socio-environmental responsibility.
Amostragem e análise de bioaerossóis: revisão histórica
(Universidade Federal de São Carlos, 2025-11-26)
Santos, Gustavo Bitencort dos
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Urban, Roberta Cerasi
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https://lattes.cnpq.br/7313670290572985
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https://orcid.org/0000-0001-6328-6972
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https://lattes.cnpq.br/7561983227815037
The biological fraction of atmospheric particulate matter, composed of fungi, bacteria, viruses, pollen and cell fragments, plays a relevant role in air quality, climate and human health, especially in the context of respiratory inflammation, allergies and pathogen transport. Together with chemical pollution, these bioaerosols can aggravate pre-existing diseases and act as vehicles for viable microorganisms in indoor and outdoor environments. In this context, the present work aims to review, from a historical and comparative perspective, the sampling strategies and analytical techniques applied to bioaerosols in ambient air, with emphasis on performance, limitations and reported applications. The discussion covers both passive and active samplers, including gravitational collectors, volumetric slit samplers, impactors onto culture plates, liquid-phase devices, high-flow cyclones, filters, cascade impactors and personal samplers, highlighting aspects such as preservation of viability, sampled size range and temporal resolution. On the analytical side, the review encompasses methods ranging from microscopy and conventional culture to immunological assays, the use of chemical biomarkers and modern molecular and spectrometric techniques capable of providing greater taxonomic specificity and sensitivity. The studies examined show that there is no universal method and that each combination of collection and analysis involves trade-offs between temporal resolution, microbial viability, taxonomic detail, detection limit, cost and operational practicality. Therefore, the interpretation of results must consider the study objective, the sampled matrix and the biases associated with each approach, in order to promote data comparability and a critical reading of the findings.
Avanços da nanotecnologia em cosméticos frente às formulações tradicionais
(Universidade Federal de São Carlos, 2025-11-26)
Mattos, Amanda Boni de
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Schwab, Ricardo Samuel
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https://lattes.cnpq.br/6935890756504964
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https://orcid.org/0000-0001-8722-9403
The word cosmetic has its origin in the Greek kosmetikós, which means “skilled in adorning”, that is, directly linked to the idea of beautification and body organization. On the side of the Brazilian legislation, the meaning is not far off, being intended for products whose objective is to clean, perfume, or care for the skin and hair. Nanotechnology, on the other hand, is an area that designs, manipulates, and applies materials on a nanometric scale, where atoms and molecules can be reorganized. Together, they form the so-called nanocosmetics, in which nanotechnology has been applied to cosmetics, bringing significant advances compared to traditional formulations, which has allowed greater stability of active ingredients, controlled release, and more efficient skin penetration. They are present in products such as sunscreens, anti-aging creams, and moisturizing lotions, offering better results and keeping active ingredients protected while prolonging their effects. In addition to functional advantages, it also raises concerns regarding safety, toxicity, and environmental impacts, especially when related to disposal in soil, water, and aquatic environments. Thus, there are still challenges regarding specific regulation and studies related to risks, highlighting the need for further research on the subject.
Investigação de sistemas fortemente correlacionados aplicados à eletroquímica
(Universidade Federal de São Carlos, 2025-11-26)
Soares, Felipe Benedito
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Guimarães Júnior, Walber Gonçalves
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https://lattes.cnpq.br/9351326755109855
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https://orcid.org/0000-0003-0892-8631
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Souza, Ernesto Chaves Pereira de
The understanding of materials used in electrochemical processes, especially those based on transition-metal oxides, requires an accurate description of electronic correlation effects. These materials present partially filled d and f orbitals and exhibit phenomena that challenge conventional electronic-structure models, such as Band Theory and the local or semilocal DFT functionals (LDA/GGA). In this work, the fundamental principles governing strongly correlated systems are investigated, including Mott insulators, charge-transfer insulators, and Peierls insulators, as well as the main theoretical models developed to describe them, such as the Hubbard model and its extensions. Next, the limitations of traditional first-principles methods in predicting electronic and energetic properties of correlated materials are discussed, highlighting the importance of improved methodologies such as DFT+U, DFT+U+V, hybrid functionals (HSE06), and DFT+DMFT. The application of these methods is illustrated through recent case studies involving cationic materials used in lithium-ion batteries, in which the inclusion of local and non-local electronic correlations proves essential for the accurate prediction of intercalation voltages, oxidation states, and structural characteristics. The discussed results show that conventional approaches tend to fail in strongly correlated systems, while advanced methods offer significantly more realistic descriptions that are consistent with experimental observations. Thus, this monograph reinforces the importance of electronic correlations in modern electrochemistry and highlights the role of advanced electronic-structure methods in the rational development of high-performance electroactive materials.
Desenvolvimento de rotas de veiculação de microrganismos de uso agrícola
(Universidade Federal de São Carlos, 2025-11-26)
Alves, Bruna Lendzion
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Ribeiro, Caue
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https://lattes.cnpq.br/5321313558714462
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https://orcid.org/0000-0002-8908-6343
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https://lattes.cnpq.br/4920561916490208
Azospirillum brasilense, one of the most widely used species in inoculants worldwide, is a versatile rhizobacterium that enhances nitrogen availability and nutrient uptake, as well as promotes plant growth. Although the benefits of Azospirillum in agriculture are well established, its performance is often limited by the inadequacy of conventional formulations. Improving its field efficiency can be achieved through the development of formulations designed to provide robust protection against such challenges, such as those based on bacterial encapsulation in polymers. In this study, a novel powder formulation based on a poly(glycerol citrate) (PGCit) matrix, a biocompatible and sustainably synthesized polymer, was developed. The first stage consisted of standardizing a PGCit production methodology, aiming to establish synthesis conditions that optimize the balance between polymer yield and water solubility. Two molar ratios (equimolar and with excess citric acid) and reaction times ranging from 30 to 105 minutes were initially compared. Based on the structural and thermal characterization results, the material obtained under equimolar monomeric ratio and 75-minute synthesis time was selected. Formulations were produced by treating the polymer with calcium carbonate to adjust the pH and form powder. For drying the material containing trehalose and Azospirillum, three methods were tested (oven convection, freeze-drying, and spray-drying). Cell viability was assessed at time zero and up to 180 days of storage. Initially, regardless of the drying process, the formulations showed viability on the order of 10⁸ CFU/g, and the freeze-dried formulation maintained this level throughout the evaluation period, demonstrating excellent stability. Moreover, the freeze-dried formulation was tested in an Azospirillum recovery assay on maize seeds, showing superior performance compared to the liquid inoculant used as a control. In summary, the results demonstrate the protective role of the PGCit-based matrix, establishing it as a promising new carrier for seed-applied inoculants.
Elaboração de uma história infantil como recurso para a abordagem dos elementos essenciais da Tabela Periódica
(Universidade Federal de São Carlos, 2025-11-27)
Ribeiro, Rhayana Vitória
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Milaré, Tathiane
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https://lattes.cnpq.br/4030661520659155
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https://orcid.org/0000-0001-6557-1769
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https://lattes.cnpq.br/4836155084442873
This work aims to develop a children's story as a didactic resource to address the essential elements of the Periodic Table, contributing to the scientific literacy of children in elementary school. The narrative "The Journey on Planet Sigma" adopts a playful and interdisciplinary approach, in which the characters experience adventures in search of the elements Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, and Sulfur — substances fundamental to life. The research is qualitative in nature, based on the scientific literacy indicators of Pizarro (2023, pp. 26 and 27) and the guidelines of the National Common Curricular Base (BNCC, 2018). The proposed resource seeks to stimulate curiosity and scientific reasoning, bringing chemical concepts closer to children's daily lives through creative and accessible language. It is hoped that the proposal will contribute to the development of innovative pedagogical practices that make science teaching more attractive, formative, and meaningful from childhood.
Inteligência emocional e sua relação com o vício em redes sociais e sintomas depressivos
(Universidade Federal de São Carlos, 2025-11-27)
Nogueira, Lorena Franklin Mayrink
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Muniz, Monalisa
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https://lattes.cnpq.br/9444899939943716
Emotional intelligence (EI), that is, the ability to analyze emotions and feelings in ourselves and others, as well as to use them to guide actions and thoughts according to the environment, is an important psychological construct for human beings and their relationships, and has been studied with various variables in recent years, such as depression and social media addiction. In this sense, the objective of this study was to investigate the moderating effect of EI on the relationship between depression and social media addiction, as well as the correlations between these variables. To this end, 196 adults, aged 18 to 60 years (M = 32.2), who used at least one social media platform, participated in the research. Participants were invited to complete an online form consisting of a sociodemographic characterization questionnaire and three self-report instruments: the Emotional Competencies Inventory 3.0 (ICE-R) (Bueno et al., 2015), the DSM-5 Depression Symptom Scale, Level 2 (2014), and the adapted and validated version by Fonseca et al. (2018) of the Social Network Addiction Questionnaire (CARS) (Mayaute & Blas, 2014). The variable depression correlated negatively and significantly with the 6 factors of the ICE-R and positively with social network addiction. Social media addiction was significantly and negatively correlated with the facets “Regulation of High-Power Emotions in Self” (⍴ = -0.194**), “General Factor” (⍴ = -0.251**), and “Regulation of Low-Power Emotions in Self” (⍴ = -0.438**) of the ICE-R. No moderating effect of EI was found on the correlation between social media addiction and depression.
Proposta de protocolo de implementação do Building Information Modeling (BIM) para os Institutos Federais de Educação, Ciência e Tecnologia
(Universidade Federal de São Carlos, 2025-11-27)
Paula, Lucimar de Souza e
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Bueno, Cristiane
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https://lattes.cnpq.br/2049901634471620
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https://orcid.org/0000-0002-3955-6589
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https://lattes.cnpq.br/7516680240208401
Building Information Modeling (BIM) has become, since the early 2000s, one of the main drivers of digital transformation in the construction industry, although its adoption remains uneven across countries, sectors, and institutions. In Brazil, while public policies such as the BIM BR Strategy have established guidelines for its dissemination, effective implementation in the public sector is still marked by technical, cultural, and organizational barriers. In this context, the Federal Institutes of Education, Science, and Technology (IFs) constitute a strategic environment for innovation due to their national scope and relevance in managing educational infrastructure. This study aimed to develop and validate a BIM implementation protocol for the physical infrastructure of the IFs, with potential for adaptation by other public institutions. The research followed the Design Science Research (DSR) method, which combines scientific rigor with practical applicability in designing artifacts to solve organizational problems. The methodology comprised: (i) a scoping and documentary review of national and international guides, manuals, and protocols to identify recurring best practices and applicable guidelines; (ii) an exploratory survey with engineering and architecture professionals from 38 IFs to diagnose practices, maturity levels, and institutional challenges; and (iii) the development and subsequent validation of the proposed protocol by BIM experts, ensuring refinement and validation of the artifact. The results revealed recurrent challenges such as lack of training, cultural resistance to change, limited interoperability, and budget constraints, along with best practices consolidated into 18 key items related to governance, standardization, capacity building, and collaborative information management. The proposed protocol—modular in structure and supported by flowcharts, clearly defined roles, and monitoring stages—proved applicable and adaptable to institutional realities. It was recognized by experts as a clear, feasible methodological guide that supports decision-making. This study contributes to scientific advancement by bridging theory and practice in building a reference model for BIM implementation in the public sector, and offers practical contributions by providing a management tool for Federal Institutes and other public bodies. By reinforcing the importance of digital transformation in public construction, the work expands the debate on innovation, transparency, and efficiency in the sector, paving the way for future research and large-scale applications.
Remoção de corante Vermelho Congo de soluções aquosas utilizando cinzas de queima de bagaço de cana
(Universidade Federal de São Carlos, 2025-11-27)
Oliveira, Amanda Cristina Franks de
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Neves, Anne Alessandra Cardoso
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https://lattes.cnpq.br/5825341428803511
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Neves, Ubaldo Martins das
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https://lattes.cnpq.br/4956114867482782
The discharge of industrial effluents containing synthetic dyes represents an important environmental problem due to their toxicity, persistence, and negative impacts on aquatic ecosystems. Congo Red dye, widely used in different industrial sectors, stands out for its resistance to removal by conventional treatment methods, reinforcing the need for efficient and sustainable alternatives for wastewater treatment. In this study, the potential of sugarcane bagasse ash, in its raw and chemically treated forms, as a biosorbent for the removal of Congo Red dye from aqueous solutions. The ash samples were characterized for their physical and chemical properties and applied in batch adsorption experiments, varying parameters such as contact time and initial dye concentration. The results showed that chemical treatment with NaOH significantly increased the adsorption capacity due to the greater exposure of active functional groups and the increase in specific surface area. The adsorption kinetics were best fitted by the pseudo-second-order model, suggesting that the process is mainly controlled by chemical interactions between the adsorbate and the biosorbent surface. The equilibrium data were better described by the Langmuir model, indicating monolayer adsorption. The maximum dye removal efficiency reached values above 80% under optimized conditions, demonstrating the potential of sugarcane bagasse ash as an alternative and economically viable material for textile effluent treatment.
Desenho e análise da rede de coprodução acadêmica de um departamento da universidade federal de São Carlos (UFSCar)
(Universidade Federal de São Carlos, 2025-11-27)
Bertho, Patricia Mayumi Mito
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Côrtes, Mauro Rocha
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https://lattes.cnpq.br/8988613760967305
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https://orcid.org/0000-0002-6172-0541
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https://lattes.cnpq.br/3506293971021321
This research investigates the academic co-production network of professors from the Department of Production Engineering at the Federal University of São Carlos (UFSCar), covering the period from 2000 to 2024, identifying collaboration patterns, the positions occupied by actors, and the influence of the distribution of scientific and social capital on the network’s configuration. The research is grounded in Social Network Analysis (SNA) and collaboration networks, articulated with Pierre Bourdieu’s theory of the scientific field. Data were collected from the Lattes Platform profiles of active faculty members of the department and include journal articles classified as individual productions, co-productions among active department members, co-productions with graduate students, and co-productions with other collaborators. For the analysis, network metrics such as degree and betweenness centrality were applied using UCINET software, while the network visualization was developed with Gephi. The results indicate that co-production involving graduate students is the most significant, followed by collaborations among DEP faculty members. Professors with greater scientific capital occupy central positions in the network, benefiting from increased visibility and access to strategic collaborations, while peripheral actors show lower levels of integration. It is concluded that the network results from the interaction between structural and relational factors and that the integration of SNA, collaboration network analysis, and Bourdieu’s theoretical framework enables a critical understanding of the dynamics of scientific production within the department.
Nexos socioecossistêmicos de práticas corporais: potencialidades e desafios de uso cotidiano de um parque urbano no interior paulista
(Universidade Federal de São Carlos, 2025-11-27)
Damiano, Marcelo
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Valencio, Norma Felicidade Lopes da Silva
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https://lattes.cnpq.br/7161606146208875
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https://lattes.cnpq.br/2562053852083065
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Gongalves, Juliano
This thesis presents and applies the Socio-Ecosystem Nexus of Bodily Practices (NSE-PC) as a way of reading the park in use, that is, how ecosystem services and disservices, infrastructure, and shared meanings combine in everyday practice. The study was conducted at Parque do Bicão (Veraldo Sbampato Sports and Leisure Center), in São Carlos, São Paulo, Brazil, with fieldwork carried out between February and June 2025. Fieldwork combined non-participant observation, systematic photo-documentation, and a structured questionnaire (n = 33). The analysis was organized into empirical units defined as scenes and segments of the park, linking descriptive accounts of what was observed to an interpretation guided by the three NSE-PC planes: material conditions, shared meanings, and perceived effects on well-being. Photographs were treated as situated traces and interpreted alongside field notes and visitors‘ stated perceptions. In Bicão, the most persistent tensions clustered around shade, safety, maintenance, and lighting, and appear as ambivalences of use: what supports comfort may require additional attention; what expands the repertoire of practices may introduce frictions. Even so, practices tend to continue through adjustments in time of day, routes, and pace, and the well-being balance is more favorable when the path maintains minimal legibility and predictability. The central contribution is methodological and applied: the NSE-PC offers a traceable reading procedure to prioritize proportional management actions and infrastructural improvements in urban parks.
Previsão da evolução da resistência de um aço em uma sequência de passes durante a laminação a quente utilizando lógia fuzzy
(Universidade Federal de São Carlos, 2025-11-27)
Migani, Erick
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Balancin, Oscar
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https://lattes.cnpq.br/8379205949387493
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https://orcid.org/0000-0001-8071-5855
;
https://lattes.cnpq.br/6236436552381895
The prediction of flow stress and rolling force in steels during the hot rolling process remains a recurrent challenge in modern steelmaking, as it involves complex thermomechanical phenomena such as recrystallization, strain acumulation, and carbonitride precipitation. Classical empirical models, although widely used, show limitations in representing the nonlinear behavior of the mean flow stress (MFS) and the applied rolling force under real industrial conditions. In this context, the present work introduces the development of a prediction model based on fuzzy logic, structured in a tree format (Fuzzy Inference System Tree – FIST), to estimate the MFS and rolling force during the hot rolling of a niobium microalloyed steel plates. The study used industrial data obtained from a steel plant, considering four final thicknesses (12, 16, 20, and 30 mm), processed in eight successive finishing passes. The fuzzy model was implemented in MATLAB, employing triangular membership functions, Sugeno-type rules, and supervised training using the Particle Swarm Optimization (PSO) and Pattern Search algorithms. The results were compared with well-established empirical models, such as those proposed by Misaka and Poliak, showing that the FIST achieved superior predictive performance, especially under conditions of strain accumulation and below the non-recrystallization temperature (Tnr). A critical analysis of the results demonstrated that the fuzzy model can capture the nonlinearities of the process and integrate metallurgical mechanisms such as dynamic (DRX), static (SRX), and metadynamic (MDRX) recrystallization while maintaining high interpretability. The application of the FIST model represents a promising alternative for predicting MFS and rolling force in industrial plate rolling processes, contributing to the optimization of operational parameters and the improvement of final steel properties.
Influência de lixiviados de mineração no comportamento hidráulico de geocompostos bentoníticos (GCLs)
(Universidade Federal de São Carlos, 2025-11-27)
Sousa, Mauro Alexandre Paula de Sousa
;
Correia, Natália de Souza
;
https://lattes.cnpq.br/2172645507238077
;
https://orcid.org/0000-0002-6867-9596
;
Portelinha, Fernando Henrique Martins
Brazil’s mining industry, a major economic sector, presents high potential for environmental contamination. Conventional geosynthetic clay liners (GCLs) with natural sodium bentonite (NaB) may fail hydraulically when exposed to aggressive mining leachates (high ionic strength/extreme pH), as these liquids reduce osmotic swelling and cause flocculation. Most studies address GCLs with natural sodium and granular bentonites. In Brazil, however, sodium-activated calcium bentonites (CaB) are commonly used due to their abundance, mostly available in powdered form. Bentonite–polymer composites (BPCs) appear as alternatives, but polymer elution remains a concern, and the performance of BPCs with CaB under mining leachates is still little known. This study evaluated the hydraulic performance and viability of GCLs and BPCs produced with sodium-activated calcium bentonite (CaB), both unmodified and modified with linear and/or cross-linked polymers, as alternatives to natural sodium bentonite (NaB). These materials were tested under different mining leachates, saline, and extreme pH solutions. The effects of mineralogy and bentonite grain size were analyzed to understand their influence on GCL hydraulic behavior. Additionally, BPCs using three polymer types were investigated to enhance GCL performance for specific mining applications. Hydraulic conductivity (k) and swell index (SI) tests were performed, including analyses of pre-hydration and granulometry (powder, fine/coarse granular). All bentonites showed reduced swelling and increased k when in contact with mining liquids. GCLs made with sodium-activated calcium bentonites (CaB) generally outperformed those with natural NaB, often meeting the < 5×10⁻¹¹ m/s requirement. CaB mineralogy was less affected, and its powdered granulometry had a stronger impact on performance. Pure CaB GCLs, however, exhibited higher k in aggressive leachates. BPCs, especially those with CaB and linear polymers (Y) or specific combinations, showed improved chemical resistance, maintaining low k (< 5×10⁻¹¹ m/s) due to pore blocking by hydrogels. Fine bentonite particles were crucial under high ionic strength, outweighing mineralogical effects. Pre-hydration in water was also essential for performance. Polymer addition enhanced hydraulic behavior, but the polymer type must match the leachate chemistry. Polymer selection and granulometry determined resistance to elution. Overall, Brazilian sodium-activated calcium bentonites (CaB) in fine granulometry, modified with appropriate polymers, represent a viable and technically effective alternative to NaB in GCLs for aggressive mining leachates.
Dar a ver o invisível: portfólios que narram as experiências dos bebês e das crianças bem pequenas
(Universidade Federal de São Carlos, 2025-11-27)
Nogueira, Maria Eduarda
;
Lombardi, Lucia Maria Salgado dos Santos
;
https://lattes.cnpq.br/5697508831302188
;
https://orcid.org/0000-0001-6978-864X
;
https://lattes.cnpq.br/4507266868993021
This thesis investigates the potential of the portfolio as an instrument for documentation and mediation of pedagogical practices in nursery schools. Recognizing early childhood as a period of intense cultural production, the study addresses the complexity of capturing and attributing meaning to the ephemeral and playful experiences of infants and toddlers (zero to three years and eleven months), which frequently do not result in tangible material products. Thus, the main objective is to determine how the teacher can create portfolios that record these experiences in a sensitive and ethical manner. The research adopts a qualitative, bibliographic approach based on the analysis of normative documents and works by authors who discuss the pedagogy of listening and documentation. The findings demonstrate that documentation requires the teacher to possess an ethical and aesthetic competence characterized by reflective curation, making the portfolio an ideal tool for giving visibility to the child’s voice. It is concluded that the portfolio is a communication resource that strengthens the partnership between the nursery school and the family, thereby overcoming the assistive view of the institution.