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Estratégias integradas de modificação de nanopartículas de óxido de zinco aplicadas à redução eletroquímica de CO2 a CO
(Universidade Federal de São Carlos, 2026-02-20) Nóbrega, Eryka Thamyris Damascena; Souza, Ernesto Chaves Pereira de; https://lattes.cnpq.br/1505400360366643; https://lattes.cnpq.br/0986012637214676; Oliveira, Cauê Ribeiro de; Sedenho, Graziela Cristina; Gasparotto, Luiz Henrique da Silva; Pocrifka, Leandro Aparecido; https://lattes.cnpq.br/5321313558714462; https://lattes.cnpq.br/6898859938989272; https://lattes.cnpq.br/2649423643904707; https://lattes.cnpq.br/6236326108324745
Anthropogenic carbon dioxide (CO2) emissions represent one of the major environmental challenges of the present time, driving the development of strategies aimed at integrating carbon into sustainable chemical cycles. In this context, the electrochemical reduction of CO2 into value-added products, particularly carbon monoxide (CO), has emerged as a promising alternative. In this work, ZnO-based systems modified with Co2+, Ag+, and Cu2+, as well as Ag+/Cu2+ co-modified materials, were investigated. The catalysts were synthesized through a hydrothermal route assisted by microwave heating and UV-Vis radiation. The experimental strategy was supported by chemometric tools, enabling a statistically robust evaluation of the main effects and interactions among chemical composition, synthesis conditions, and operational parameters. The materials were characterized using structural, morphological, and electronic techniques. Electrochemical performance was evaluated in cells operating under continuous CO2 flow, employing gas diffusion electrodes and different applied potentials or current densities. Reaction products were quantified by chromatographic analysis, allowing the determination of Faradaic efficiencies. For the Co2+-doped ZnO system, cobalt incorporation induced significant changes in the electronic structure, including a reduction in charge carrier density and the introduction of deep defect states. These modifications hindered electronic transport at low overpotentials, resulting in lower selectivity toward CO. Although synthesis assisted by UV-Vis radiation modulated the nature of these defects and favored charge migration at more negative potentials, pristine ZnO synthesized without UV-Vis irradiation exhibited the best performance, reaching Faradaic efficiencies close to 97% for CO at more negative potentials, such as -1.0 V vs. RHE. In systems modified with Ag+, Cu2+, and Ag+/Cu2+, the presence of Ag+ proved particularly effective in improving the electrocatalytic performance of ZnO. ZnO(Ag) catalysts achieved Faradaic efficiencies above 80% for CO even at high current densities (up to -100 mA cm-2). This behavior is attributed to improved charge transport, enhanced CO2 adsorption, and greater stabilization of reaction intermediates. In contrast, Cu-containing materials exhibited lower selectivity toward CO, although they promoted the formation of minor products, suggesting modifications in reaction pathways and the possible promotion of competing routes. The Ag+/Cu2+ systems showed intermediate behavior, indicating that the synergistic effect between the metals strongly depends on their relative proportion and surface distribution. Overall, the results demonstrate that the electrocatalytic performance of ZnO is governed by a complex interplay between metal incorporation, synthesis method, and operational conditions.
A expansão do ensino superior a distância (EaD) no Brasil no setor privado e a formação do pedagogo.
(Universidade Federal de São Carlos, 2026-02-20) Martins, Thiago de Melo; Lima, Paulo Gomes; https://lattes.cnpq.br/5109357037661496; https://orcid.org/0000-0001-9932-4934; https://lattes.cnpq.br/9328590602599607; https://orcid.org/0000-0003-4010-5977; Ribeiro, Elidia Vicentina de Jesus; Silva, Givanildo; Santos, Jociane Marthendal Oliveira; Marques, Sílvio César Moral; https://lattes.cnpq.br/6034946635459600; https://lattes.cnpq.br/3702199251733170; https://lattes.cnpq.br/0881773975437368; https://lattes.cnpq.br/6047434055828372; https://orcid.org/0000-0002-6003-2907; https://orcid.org/0000-0001-5490-6690
This research analyzes public policies aimed at undergraduate degrees in Pedagogy in the Distance Education (DE) modality, focusing on the five largest private Higher Education Institutions (HEIs) in Brazil. The study seeks to understand how these policies have contributed to the expansion of DE and what their implications are for the training of educators. The theoretical framework is based on Stephen Ball's Policy Cycle (1992; 1994; 2009; 2016), articulated with Foucault's (1970) conceptions of discourse and power, which allows for the examination of the relationships between political texts, institutional practices, and the contexts of influence and practice. Methodologically, a critical qualitative approach is adopted (Gamboa, 2003; Lima, 2003; Carspecken, 2011). The investigative process encompasses documentary analysis (Cellard, 2012) of current legislation on distance education in Brazilian higher education, content analysis (Bardin, 2011), and a systematic review configured as a State of the Art of theses and dissertations (Morosini; Nascimento; Nez, 2021). The results, analyzed in light of the specialized literature, reveal a duality between advances and challenges. The advances point to inclusion and geographical democratization, the expansion of cultural and social capital, the existence of quality public experiences in distance education pedagogy, as well as the pedagogical use of technologies and innovation. In contrast, substantial challenges are evident: the commodification and financialization of education, the emptying of intellectual training, the precariousness and fragmentation of teaching work, high dropout rates, limitations in supervised internships, and contradictions between official discourse and practice. The central thesis, corroborated by the research findings, posits that the offering of distance learning Pedagogy courses by the largest private higher education institutions acts, primarily, as an instrument for the massification of education. A prevalence of superficial and ineffective training is observed—marked by gaps in subjects inherent to teaching—despite the existence of occasional examples of excellence. It is concluded that guidelines for distance education should be consolidated as state policies, transcending governmental changes. To guarantee quality, the creation of a Research Center for Educational Sciences, the strengthening of on-site inspections by INEP (National Institute of Educational Studies and Research), and the implementation of scholarship programs as a strategy to mitigate academic dropout are proposed.
Explorando as possibilidades estéticas e imersivas dos fenômenos em The Backrooms e espaços liminares na arte e em jogos eletrônicos
(Universidade Federal de São Carlos, 2026-02-20) Sabóia, Gabriel Henrique Rodrigues; Andrade, Leonardo Antônio de; https://lattes.cnpq.br/3921612856948891; https://lattes.cnpq.br/7462418407808597; https://orcid.org/0009-0007-4020-5958; Rufo, Alline Duarte; Campos, Marina da Costa; Mastrocola, Vicente Martin; https://lattes.cnpq.br/2109264727903592; https://lattes.cnpq.br/8915084345479522; https://lattes.cnpq.br/9175184110106855
The Backrooms legend emerges on the internet in 2019 and becomes a cultural phenomenon by articulating human experiences within transitional spaces. Concepts such as liminality, the intermediate phase of a ritual (Van Gennep, 1919; Turner, 1974), the uncanny (Freud, 2019), and the non-place (Augé, 1994) guide the reflection on the aesthetics and narrative of the legend constructed by online communities. Its visual impact is analyzed based on key authors in anthropology, netnography, culture, audiovisual narrative, and art. As a result, a set of audiovisual works and analytical reflections contributes to defining and deepening the aesthetics of liminality, seeking to position itself as both a methodological and sensitive reference for future investigations and creations concerning emerging narratives and new aesthetics in contemporary audiovisual media.
Avaliação de efeito do Triclosan em órgãos internos de operárias campeiras de Bombus atratus (Hymenoptera: Apidae)
(Universidade Federal de São Carlos, 2026-02-20) Provase, Michele; Abdalla, Fábio Camargo; https://lattes.cnpq.br/7770803221041927; https://lattes.cnpq.br/7262712256652151; https://orcid.org/0000-0001-7083-3815; Santos, Glenda Samara Dias; Serrão, José Eduardo; Jones, Monica Costa; Balsamo, Paulo José; Abdalla, Fábio Camargo; https://lattes.cnpq.br/0251583957417012; https://lattes.cnpq.br/6663553463256293; https://lattes.cnpq.br/0578970203313985; https://lattes.cnpq.br/4601072042180652; https://lattes.cnpq.br/7770803221041927
Emerging contaminants (ECs) are synthetic or natural compounds that, despite their widespread use, present regulatory gaps regarding environmental threshold limits and potential ecotoxicological effects. Triclosan (TCS) has emerged as a compound of concern due to its persistence, high lipophilicity, and bioaccumulative properties. Although use restrictions have been imposed by regulatory agencies, the consumption of TCS-containing products increased during the COVID-19 pandemic, raising concerns about its environmental release. In this context, the present thesis was structured into three chapters. Chapter 1 comprises a scientometric and ecotoxicological analysis of the scientific literature addressing the effects of TCS on terrestrial organisms, focusing on bioaccumulation, oxidative stress, neurotoxicity, and reproductive effects in vertebrates and invertebrates. The findings reveal a substantial lack of studies involving insects, particularly pollinators, which limit comprehensive environmental risk assessments. Chapter 2 evaluated, for the first time, the effects of oral exposure to TCS in worker bees of Bombus atratus, using concentrations based on maximum limits permitted for continuous use in personal hygiene products as established by regulatory agencies. Histological and histochemical alterations were observed in the brain, including increased intercellular spaces and changes consistent with neurotoxic processes, which were associated with behavioral alterations detected through automated analysis using the EthoFlow software. Chapter 3 investigated the effects of TCS on the digestive system, with emphasis on the midgut, as well as on tissues comprising the hepato-nephrocytic system, including the fat body and pericardial cells associated with the dorsal vessel. Morphological and cellular alterations in these tissues indicated impairment of functions related to digestion, detoxification, and homeostasis. The effects observed in Chapters 2 and 3, even at sublethal levels, indicate potential functional impairment at the individual level, with possible implications for colony performance and maintenance. Overall, the results reinforce the need to establish specific guidelines for TCS residues in the environment and expand current knowledge on the impacts of this emerging contaminant on pollinators, particularly species of the genus Bombus.
Escrita (alter)biográfica como prática de liberdade: cartas-testemunho da pandemia vivida nas periferias por crianças e professoras.
(Universidade Federal de São Carlos, 2026-02-20) Vieira, Juliana; Aygadoux, Bárbara Cristina Moreira Sicardi; https://lattes.cnpq.br/9746628149674449; https://orcid.org/0000-0001-5097-459X; https://lattes.cnpq.br/7870197803519041; https://orcid.org/0000-0003-2818-3374; Rodrigues, Ana Cristina da Silva; Reis, Graça Regina Franco da Silva; Bragança, Inês Ferreira de Souza; Santos, Maria Walburga dos; https://lattes.cnpq.br/8696471514884993; https://lattes.cnpq.br/8674157963018100; https://lattes.cnpq.br/3676732863480672; https://lattes.cnpq.br/2954227254025696; https://orcid.org/0000-0003-3887-8233; https://orcid.org/0000-0002-2420-0985; https://orcid.org/0000-0003-4782-1167; https://orcid.org/0000-0002-9304-5800
This thesis originates from the daily life of this teacher-narrator-researcher and the lived experiences during the Covid-19 pandemic in Brazil in 2020. Enrolled in the extension course “Understanding the World Today: Pandemic and Peripheries,” offered by Universidade Emancipa in partnership with UERJ and USP, I gained access to the primary sources of this research: letters concerning the challenges of the pandemic in peripheral contexts. As an enthusiast, writer, and researcher of epistolary writing, I became interested in the letters written by teachers and envisioned a scope for a possible investigation, motivated by the desire to publicize those voices which, until then, remained undocumented. Following an invitation to join, as a fellow, the project “On the Other Side of the Margin: Challenges and Propositions in Facing Social Inequalities of Childhoods in a Pandemic,” funded by CAPES, and as a primary education teacher in a peripheral public school, I invited the children to engage with the primary sources so they could also write letters to narrate their realities and impressions of life during the pandemic. The testimony-letters produced by teachers and children from peripheral territories within the context of the Covid-19 pandemic were taken as sources in the weaving of a broader conversation that intersects with the author's research-life-formation experiences. Based on the (auto)biographical narrative approach and the assumptions of interpretive-comprehensive analysis and DNEP, this research understands epistolary writing as an (auto)biographical device of writing-listening, reflexivity, formation, and authorship, highlighting experiences, affects, subjectivities, inequalities, and modes of resistance in everyday school life. The text of the thesis and its entire structure in form and content is written narratively through letters, understanding that academic records and works can and should challenge hegemonic and academicist forms of knowledge production. Thus, visibility was given to the faces and audibility to the voices of children and teachers, commonly erased and silenced by the merely numerical statistical data found regarding the pandemic. Narrative research in/of/with everyday life also revealed itself as an approach that favored problematization and reflection on the ethical, methodological, and epistemopolitical dilemmas of research with children. The documentary dimension of the letters, aimed at preserving pandemic memories, and the denunciations-announcements present in the epistles and narratives of the teacher-researcher-narrator and the children, mark this period as a sanitary, social, and political crisis that disproportionately affected lives already threatened and (re)existing.
Percepções de cuidadores de crianças com desenvolvimento atípico acerca de suas necessidades, empoderamento e qualidade de vida familiar
(Universidade Federal de São Carlos, 2026-02-20) Pelegrini, Patrícia Ortiz de Camargo; Della Barba, Patrícia Carla de Souza; https://lattes.cnpq.br/6448489426438006; https://orcid.org/0000-0002-7893-8133; https://lattes.cnpq.br/8119976588074272; https://orcid.org/0000-0002-2327-3760; Folha, Débora Ribeiro da Silva Campos; Joaquim, Regina Helena Vitale Torkomian; https://lattes.cnpq.br/9888013532351574; https://lattes.cnpq.br/7719481657895650; https://orcid.org/0000-0002-0743-603X; https://orcid.org/0000-0003-3700-397X
Caring for children with atypical development presents families with challenges that go beyond clinical demands, involving emotional, social, institutional, and political aspects that directly impact family quality of life and caregiver empowerment processes. In the Brazilian context, studies that integrate family needs, available support, empowerment, and family quality of life are still scarce. This study aimed to investigate the needs and support perceived by caregivers of children with atypical development, as well as to analyze the relationship between these elements and family empowerment and quality of life. This is a quantitative-qualitative, exploratory, and cross-sectional study conducted with 115 primary caregivers of children aged 0 to 12 years. Data collection was carried out using standardized instruments and open-ended questions. The data were analyzed in an integrated manner, articulating quantitative and qualitative results in light of theoretical frameworks of care, empowerment, family quality of life, and Family-Centered Practices. The results showed that caregivers' needs are multidimensional and continuous, encompassing informational, emotional, social, and organizational aspects, intensified by the centralization of care, especially in the maternal sphere. It was observed that the available institutional support is fragmented and insufficient, demanding constant mediation and active search strategies from caregivers. Empowerment emerged as a relational and ambivalent process, frequently mobilized as a response to system failures, strengthening the caregivers' capacity for action, but not always reducing the burden experienced. Family quality of life was shown to be traversed by these dynamics, combining strengthened affective bonds with restrictions on social participation, leisure, and self-care. It is concluded that caregiver empowerment cannot be understood as an individual attribute, but as a process conditioned by support networks, relationships with services, and public policies, reinforcing the need for professional practices and interventions in Occupational Therapy committed to the sustainability of care.
Corpos sagrados e desejos profanos: luxúria e ambiguidade em poemas de Decadência (1923), de Judith Teixeira
(Universidade Federal de São Carlos, 2026-02-20) Oliveira, Larissa Bistafa Antunes de; Alavarce, Camila da Silva; https://lattes.cnpq.br/7151151054517258; https://lattes.cnpq.br/4876544015984335; Alves, Ida Maria Santos Ferreira; Valentim, Jorge Vicente; https://lattes.cnpq.br/5374201433451552; https://lattes.cnpq.br/4427303771174064
Judith Teixeira (1880–1959) was a Portuguese modernist poet whose work challenged the moral and aesthetic paradigms of her time, for which she faced severe recriminations. Due to the reception of her work at the time, Judith remained marginalized from the Portuguese literary canon for a long time. Her poems express the free and pluralistic nature of female desires, ranging from heterosexual eroticism to lesbian eroticism, configuring what the author herself called the force of “lust”. By assuming a subversive female voice conscious of her desiring power, Judith Teixeira occupies an aesthetic in-between space: she dialogues with the themes of Decadentism, with the experimentation and chronology of Modernism, and anticipates debates on gender and sexuality that would be taken up again by postmodern thought. Therefore, the present analysis aims to examine the construction of lust in Decadência (1923), considering its ambiguities, duplicities, and poetic transgressions. The theoretical contribution mainly draws on Georges Bataille's Erotism (1988), in addition to from feminist criticism and cultural studies, especially authors such as Showalter (1994), Klobucka (2009), Hélène Cixous (2022), Richard Rorty (2007) and Bhabha (2013), to discuss eroticism, subjectivity, and female discourse as forms of resistance. Thus, it is understood that Judith Teixeira inaugurates a poetics of transgression that transcends the limits of her time, reaffirming the power of writing as a space of desire, emancipation, and affirmation of the feminine.
Regressão simbólica em redes complexas
(Universidade Federal de São Carlos, 2026-02-20) Brum, Beatriz Regina; Previdelli, Isolde Terezina; ttps://lattes.cnpq.br/0295127877081690; https://orcid.org/0000-0002-8686-420X; Rodrigues, Francisco Aparecido; https://lattes.cnpq.br/2153014839354888; https://lattes.cnpq.br/9057626595103608; https://orcid.org/0000-0001-9360-4329; Rodrigues, Francisco Aparecido; Izbicki, Rafael; Souza, Eniuce Menezes de; Ribeiro, Matheus Henrique Dal Molin; Oliveira, Willian Luís de; https://lattes.cnpq.br/2153014839354888; https://lattes.cnpq.br/9991192137633896; https://lattes.cnpq.br/0029713017048136; https://lattes.cnpq.br/2531836774466938; https://lattes.cnpq.br/4423792653643417; https://orcid.org/0000-0002-0145-5571; https://orcid.org/0000-0003-0379-9690; https://orcid.org/0000-0003-0265-7586; https://orcid.org/0000-0001-7387-9077; https://orcid.org/0000-0002-2941-9804
Discovering the equations that govern a system from observations is fundamental in several areas of science, as it enables both understanding its properties and predicting future behavior. Recently, machine learning techniques based on symbolic regression have emerged as an automated alternative for this task, with the advantage of not requiring prior domain knowledge to effectively describe dynamical systems, although they may benefit from such knowledge to refine the obtained equations. This study aims to develop a new methodology for the analysis and inference of complex phenomena by analyzing and comparing the performance of multiple symbolic regression algorithms in identifying epidemic dynamical systems across different propagation environments. Traditionally, temporal dynamics analyses rely on sequentially organized linear data, an approach that is limited when studying systems in which interconnections among elements and recurrent interactions decisively influence their evolution. To overcome this limitation, the research was structured into two approaches: the first using data from homogeneous environments and the second from heterogeneous environments. In both cases, symbolic regression algorithms were applied, using the fit obtained from Random Forest models as a reference. The effectiveness of the methods was evaluated through descriptive analysis and the application of the Wilcoxon test to assess significant differences between real and estimated dynamics. In the second approach, inferential statistical analysis was included to investigate the influence of network topology on the accuracy of the regressors. The results show that some algorithms, such as SINDy, SR, and MultKAN, demonstrated a high capacity to reconstruct the underlying dynamics in both approaches, with SR achieving the best performance among them. However, no significant effects of network topology were detected on algorithm performance, except with respect to R2, which was already expected. These findings indicate that the learned equations proved to be generalizable to the scenarios described here, regardless of the structural characteristics of the propagation environment, thereby supporting their potential implementation in real-world public health settings.
Fatores críticos de sucesso que afetam a permanência estudantil na universidade: um estudo de caso dos estudantes ingressantes nos cursos de engenharia da Universidade Federal de São Carlos UFSCAR
(Universidade Federal de São Carlos, 2026-02-20) Biscegli, Murillo; Martins, Manoel Fernando; https://lattes.cnpq.br/3921504261628850; https://lattes.cnpq.br/6137036288399845; https://orcid.org/0009-0004-0820-0303; Zambrano, Tatiane Fernandes; Silva, Antonio Carlos Lopes da; https://lattes.cnpq.br/0466901836814460; https://lattes.cnpq.br/9533895390628271
The work entitled “Critical Success Factors Affecting Student Retention at the University: A Case Study of Students Entering Engineering Courses at the Federal University of São Carlos (UFSCAR)” aimed to analyze the factors impacting dropout rates in undergraduate engineering courses at UFSCAR. To this end, a model focused on identifying Critical Success Factors (CSFs) from the students' own perspective was developed and validated. The goal is to provide institutional managers with tools to identify key areas for improvement, contributing to more effective strategic, operational, and institutional management, as well as providing students with a guide to the actions taken by the institution. The proposal also aims to reduce inequalities and foster the production of scientific and technological knowledge capable of improving students' quality of life. In this context, this master's dissertation sought to answer the following question: “What are the Critical Success Factors for undergraduate engineering courses at UFSCAR?” The main objective was to identify and group the relevant CSFs for these courses. Specifically, through a literature review, the study sought to identify the common Critical Success Factors (CSFs) for these courses, with the aim of analyzing, grouping, and discussing them in light of data collected through questionnaires administered to incoming Engineering students at the Federal University of São Carlos (UFSCAR), located in the city of São Carlos, SP. Based on the data analysis, it was possible to propose a set of specific CSFs for undergraduate Engineering courses, with the potential to support the management of these programs and offer support to students. Finally, a Technological Product proposal for a retention support system to monitor student dropout rates at the University is presented. Keywords: Critical