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Redes de comunicação: metodologias coletivistas para o planejamento da transição agroecológica, com comunidades camponesas em Nariño, Colômbia
(Universidade Federal de São Carlos, 2025-05-12)
Méndez, Daniel Ricardo González
;
Fontanetti, Anastácia
;
https://lattes.cnpq.br/3598362104615834
;
https://orcid.org/0000-0003-4863-7834
;
Duval, Henrique Carmona
In the face of evident inequality and socio-ecological annihilation in the Global South, stemming from the economic powers that drive the capitalist, imperialist, patriarchal, supremacist, and extractivist systems with direct impacts on rural areas, this research was born. It brings the territorial planning of peasant communities in Colombia to the discussion and practice. From an agroecological perspective, the goal was to establish social communication networks between the peasant communities of La Tulpa and Nodo de Agroecología de Tango and extension technicians. This would enable dialogue and the collective development of strategies for planning and implementing proposals that promote emancipatory agroecology. These proposals aim to foster community autonomy in their territories and ecosocial relationships with other stakeholders and nature, focusing on integral well-being. The researchers applied a co-created methodology based on developing concrete projects through various activities, using social techniques and technologies for reflection and constructing plans to strengthen the agroecological transition of these communities. This approach was linked to an analysis of the departmental public policy on agroecology.
O conceito de desejo na obra inaugural de Sigmund Freud
(Universidade Federal de São Carlos, 2025-05-12)
Zanchi, João Lucas
;
Busacchi, Vinicio
;
Soria, Ana Carolina Soliva
;
https://lattes.cnpq.br/2903416522364971
;
https://lattes.cnpq.br/8765485554681541
This work seeks to explore the meaning of 'desire' in Sigmund Freud's inaugural writings, namely, the set of works written up to the publication of Die Traumdeutung ([1899]1900). To this end, a historical-conceptual analysis is conducted of the main texts in which this concept appears in a significant way. The analysis considers not only the internal relations it establishes within Freudian theory, but also the historical context in which these conceptual constructions take shape. It is concluded that 'desire' is a concept of major importance for the constitution of the logic of psychoanalytic practice; however, its meaning is not unequivocal. Rather, it emerges as a problematic notion that reflects the epistemic tensions within Freud's work. Keywords: desire; Wunsch; Freud; psychoanalysis.
Comercialização do café produzido pelas cooperativas da população em processo de reincorporação socioeconômica em Bogotá, Colômbia: uma abordagem territorial, comunitária e colaborativa
(Universidade Federal de São Carlos, 2025-05-12)
Aljure, Juan Luis Camacho
;
Santos, Leandro de Lima
;
https://lattes.cnpq.br/2750978055015275
;
https://lattes.cnpq.br/8050084880171754
After the signing of the 2016 Peace Agreement between the Colombian government and the former guerrilla group Fuerzas Armadas Revolucionarias de Colombia – Ejército del Pueblo (FARC-EP), the process of Disarmament, Demobilization, and Reintegration (DDR) began, involving more than 10,000 men and women. Following the disarmament and demobilization phases, former combatants opted for a model of collective socioeconomic reintegration, organizing themselves into productive cooperatives as a strategy to ensure economic autonomy and sustainability in their new stage of life. Colombian coffee, globally recognized for its quality and cultural value, became one of the main productive pillars of these cooperatives. The choice of coffee was not only an economic decision but also a way to connect former combatants with networks of fair trade, solidarity economy, and rural development, integrating them into sustainable value chains. This study observed and discussed the dynamics of coffee commercialization produced by the population undergoing socioeconomic reintegration in the city of Bogotá, through territorial, community-based, and collaborative approaches. Although the findings revealed the complexity of the reintegration process for former combatants, they also demonstrated that the work of the cooperatives has had positive impacts both on income generation and on the members’ self-esteem. Additionally, the study aimed to contribute to the monitoring of the Peace Agreement’s implementation, offering input for the debate on reintegration policies, rural development, and social justice, while also helping to strengthen the promotion of a culture of reconciliation, peace, and prosperity in the country.
Agências de classificação de risco e a dinâmica dos campos: trajetórias, capitais e a dominação financeira
(Universidade Federal de São Carlos, 2025-05-13)
Nascimento, Romário Rocha do
;
Sacomano Neto, Mário
;
https://lattes.cnpq.br/0000793038362058
;
https://orcid.org/0000-0002-2561-1700
;
https://lattes.cnpq.br/6326797181003964
Credit Rating Agencies [CRAs] are influential and powerful institutions in the international financial market able of impacting the economies of companies and sovereign states. Over the years, they have acquired financial, cultural, political, and economic resources, which have granted them a significant level of influence within the dominant core of the financial market—comprised of the State, banks, and global governance institutions. From this perspective, the objective of this thesis is to analyze how CRAs structure an influential position within the dominant core of the financial market. To achieve this goal, we have divided the research into three studies, each grounded in and structured by distinct objectives, propositions, and methods. The first paper employs the theory of fields to understand the inter-field relationship between the State and CRAs. Through historical documentary research, we analyze some of the key regulatory milestones and events involving CRAs in the financial market. The study highlights how the State engaged various other market fields to promote the legitimacy of CRAs’ performative work. The second paper examines the trajectory and capital accumulation by actors in the field of Agencies Moody’s and S&P— the two largest CRAs in the market. Using prosopography data analysis and Multiple Correspondence Analysis [MCA] the study identifies and assesses six forms of capital held by CRAs: commercial, social-organizational, economic-financial, technological, cultural, and symbolic. The study reveals through perceptual maps that the trajectory and capital accumulation by the actors defined the influential position of CRAs in the dominant core of the financial market, particularly through commercial, technological, and symbolic capital. The third article examines the role of financial innovation as a fundamental mechanism for restructuring the order and stability of the CRAs field. Based on a historical analysis of secondary data, a narrative of crisis recovery was constructed, emphasizing the role of financial innovations and how they function as containment mechanisms used by actors to reorganize the field’s order. We believe the three studies support the central thesis question. Furthermore, the thesis upholds a theoretical premise by offering, as an alternative, the relational analysis between economic sociology and market approaches to relativize a current critique concerning complex empirical problems and the lack of dialogue between disciplines. Thus, we discuss the complementarity between theory of fields and other approaches, such as performativity, market devices, and financial innovation. In this way, the research opposes a simplified view of markets and considers them as complex, intertwined entities, simultaneously connected to social relations and broader historical-cultural contexts.
Análise espaço-temporal dos municípios brasileiros: aplicações de aprendizado de máquina na integração de dados territoriais e populacionais
(Universidade Federal de São Carlos, 2025-05-13)
Carvalho, Gabriel Gomes de
;
Camargo, Heloisa de Arruda
;
https://lattes.cnpq.br/0487231065057783
;
https://orcid.org/0000-0002-5489-7306
;
Valencio, Norma Felicidade Lopes da Silva
This study sought to explore the territorial, demographic, and environmental dynamics of Brazilian municipalities through an integrated data approach based on machine learning. The research is justified by the need to understand how different municipal characteristics relate to each other and evolve over time, considering aspects such as changes in territorial configuration, land use and land cover patterns, and demographic transformations. The methodology adopted involves the collection and processing of data from official databases, such as IBGE and MapBiomas, allowing the construction of a structured dataset suitable for the application of statistical and artificial intelligence techniques. The first step consists of defining the municipality as the unit of analysis, considering its institutionalization and evolution over time. A special focus is given to the period from 2003 to 2023, when there was a stabilization in the emancipatory processes. In addition, regional differences in municipal formation are analyzed, highlighting how each Brazilian macro-region presents distinct patterns of creation and expansion of municipalities. Next, the territorial characteristics of the municipalities were investigated, covering aspects such as territorial extension, spatial variations, and environmental factors that influence their configuration. From this, statistical inferences were drawn to assess significant differences between municipalities, using methods such as ANOVA to understand variations between regional groups. The research advances with the application of supervised and unsupervised machine learning techniques. Finally, Explainable Artificial Intelligence (XAI) techniques were used to interpret the generated models and understand the importance of each variable in municipal behavior. The identification that the formation of clusters of municipalities, based on territorial, population, and environmental characteristics, correspond more to the natural biomes of Brazil than to the traditional divisions by state or region. Thus, municipalities with similar environmental and land use characteristics, even if belonging to different states, were grouped into highly homogeneous clusters, demonstrating the strength of data-based and machine learning approaches for identifying spatial patterns that escape political-administrative divisions. Thus, the dissertation proposes a new look at municipal organization in Brazil, combining different data sources and methodologies to deepen the understanding of the transformations that have occurred in the national territory.
A natureza das ações educativas desenvolvidas por bibliotecárias(os) da Rede Federal de Educação Profissional, Científica e Tecnológica (RFEPCT)
(Universidade Federal de São Carlos, 2025-05-13)
Souza, Ágata Nelza Gomes de
;
Sant’Ana, Izabella Mendes
;
https://lattes.cnpq.br/7860235863062183
;
https://orcid.org/0000-0001-9381-350X
;
https://lattes.cnpq.br/2211426713865503
This study investigates how librarians from the libraries of the Federal Network of Professional Scientific and Technological Education (RFEPCT) and graduates of the professional master’s degree program in Professional and Technological Education (ProfEPT) understand the nature of the educational actions they develop. This is an ontological study that investigates the nature of the entity itself aiming to understand it as a being and the links between its constituent elements. Specifically, we aim to characterize the subjects taking part in the research and their working context; to learn if/how initial training (librarianship) and continuing training(s) contributed to developing the educational actions in question; to identify the typologies and to specify the definitions given to educational actions; to characterize, through the perezhivaniya reported, the constitutive elements of the nature of the educational actions highlighted by the participating subjects; and to identify if/how they understand the presence/relevance of technology in the development of educational actions. We conducted systematic mapping (MS) to identify the content related to the subject and found that most studies on the subject refer to the area of librarianship, with little interlocution with education. This justification for this research is added to others of a social and personal nature. Data collection and analysis are based on the theoretical-methodological framework of Lev Semionovich Vygotsky’s (1896-1934) cultural-historical theory, the category of perezhivanie, as a unit of analysis and analytical reference for part of the data analyzed, mediation as an explanatory principle, and the dialectical approach. The research design is structured based on a quantitative↔qualitative approach by applying a mixed online questionnaire (31 participants, distributed across the five Brazilian regions) and a semi-structured reflective interview (six participants). The results obtained through the questionnaire showed that the group is mostly made up of women who have been working in the RFEPCT for around a decade. We also point out that continuing training, specifically the ProfEPT, is seen as more relevant than initial training in librarianship in terms of contributing to the development of educational actions. In addition, we identified 33 different types of educational actions developed by these subjects, including the development of book clubs/reading clubs, training, workshops, classes, and courses. There is also a marked multidimensionality of definitions attributed to educational actions, which were grouped into six types with clear interrelationships between them. Concerning the interviews, based on the analytical framework developed to analyze the perezhivaniya, five essential elements of these educational actions were identified, namely: work from the perspective of totality, freedom, planning, information mediation, and cultural mediation (intersecting formative character). We also indicate that technological resources are present in the educational activities mentioned and are correlated to the shortage of library workers. Thus, the nature of the educational actions is shown from a systemic, dynamic relationship linked to the principles of professional and technological education (EPT), along with a teleological dimension that expresses a prior and conscious purpose of these professionals, in the face of the invisibility and lack of institutional recognition of their work. We concluded that the educational activities carried out by librarians at the RFEPCT reflect a movement aimed at overcoming the historical dichotomy between the areas of librarianship and education, contributing to the comprehensive training of individuals, following the principles of professional and technological education (EPT), through activities carried out in non-formal educational contexts.
Sequential kraft lignin fractionation for nanoparticle production: the use of green solvent approach
(Universidade Federal de São Carlos, 2025-05-13)
Rodrigues, Jéssica de Souza
;
Freitas, Amanda de Sousa Martinez de
;
Botaro, Vagner Roberto
;
Ferreira, Marystela
;
Fraceto, Leonardo Fernandes
In the context of biorefineries, kraft lignin (KL) has emerged as an underexplored yet promising resource. Its phenolic structures are crucial, offering a wide range of applications, from advanced materials to nanotechnology. This study investigates the sequential fractionation of KL in acetic acid (HOAc), a green solvent, to produce lignin nanoparticles (LNP). KL fractions were obtained at HOAc concentrations ranging from 10 % to 60 %. The most promising fractions, namely KL_30%, KL_40%, KL_50%, and the final residue (FR), were selected based on high extraction yield and distinct molar masses (Mw) for LNP preparation using the antisolvent precipitation method. The study explores the influence of Mw, chemical composition, and functionality of LNPs on their properties. The results demonstrated an inverse correlation between Mw and the hydrodynamic diameter of LNPs, where lower Mw fractions (KL_30% and KL_40%) resulted in larger particle sizes, while KL_50%, despite its higher Mw, produced the smallest LNPs. This finding reinforces the idea that Mw alone does not dictate particle size, and the chemical functionality of lignin - particularly the balance between phenolic and aliphatic groups - plays a crucial role in determining aggregation behavior, surface charge, and colloidal stability. A deeper understanding of these structure-function relationships opens new opportunities for optimizing lignin fractionation and tailoring LNPs for specific applications in nanotechnology and advanced materials.
Towards a strategy and tool support for test generation based on good software testing practices: classification and prioritization
(Universidade Federal de São Carlos, 2025-05-13)
Villota Ibarra, Camilo
;
Maldonado, José Carlos
;
https://lattes.cnpq.br/8807333466702951
;
https://orcid.org/0000-0002-3779-7143
;
Rizzo Vincenzi, Auri Marcelo
This thesis addresses the challenge of defining, validating, and operationalizing good software testing practices, with a focus on improving the quality of test cases. It begins with a systematic literature review, which identifies 131 practices from 103 primary studies, refined into a set of 40 essential best practices. These practices were classified into code-oriented and no-code-oriented groups and validated through a practitioner-centered survey involving experienced software testers, who evaluated their clarity, relevance, applicability, and prioritization. Based on this foundation, the thesis introduces TAI-EvalGenTCS. This AI-based tool uses the OpenAI GPT-4 turbo model to evaluate test cases against proposed practices and generate optimized test cases. The tool was experimentally validated using 16 real-world Java projects, demonstrating its effectiveness in improving the modularity, maintainability, and compliance of the test cases with best practices. The survey results provided empirical confirmation of the proposed classification and offered valuable insights into tool support needs and industry perceptions. The contributions of this research include a structured and validated set of testing practices, a ranked list of essential test case features, empirical validation from industry practitioners, and a practical AI-powered solution that bridges the gap between test automation and test design quality.
Efeitos da exposição de girinos de rãs-touro, Aquarana catesbeiana (Shaw, 1802) ao material particulado atmosférico sedimentável
(Universidade Federal de São Carlos, 2025-05-14)
Fernandes, Isabela Ferreira
;
Carvalho, Cleoni dos Santos
;
https://lattes.cnpq.br/7233550271936621
;
https://lattes.cnpq.br/7473518658996350
;
Irazusta, Silvia Pierre
Air pollution is a major concern today, as it not only affects human health but can also have negative effects on fauna and flora. This type of pollution originates from fuel combustion and industrial production, for example, and can give rise to the so-called atmospheric particulate matter (MPA), popularly known as “black dust”. Given the possibilities of this MPA formation, it is necessary to evaluate the content of this material, as well as the effects it can cause on aquatic organisms. Bullfrog tadpoles, Aquarana catesbeiana, were exposed to sedimentable atmospheric particulate matter, MPA-Se (1g L-1, 96h) for analysis of metal/metalloid and biochemical biomarkers (oxidative stress, neurotoxicity and metabolism). After 96h of exposure, the water in the MPA-Se contained 18 of the 28 metals/metalloids detected in the MPA. Iron (Fe56) and aluminum (Al) showed the highest concentrations, chromium (Cr), manganese (Mn), lead (Pb) and copper (Cu) increased 10- to 20-fold, titanium (Ti), vanadium (V), strontium (Sr), rubidium (Rb), cadmium (Cd), tin (Sn) and nickel (Ni) increased 1- to 3-fold compared to the control. The bioaccumulation of metals/metalloids in the exposure water varied significantly among the organs, with the muscle and liver showing the highest concentrations of metals, followed by the brain. Lipid peroxidation (LPO) and malondialdehyde (MDA) increased only in the muscle, while carbonyl proteins (PC) increased in the liver and brain. Regarding the enzyme nitric oxide synthase (NOS), there was an increase in the liver and brain in the group exposed to MPA-Se. Catalase (CAT) activity decreased in the liver and muscles, while glutathione peroxidase (GPx) activity increased in the liver and kidneys and decreased in muscle. Glutathione S-transferase (GST), responsible for detoxification, increased in the liver and decreased in muscles and kidneys. Cholinesterase (ChE) activity increased only in muscle. The results indicate oxidative stress due to oxidation catalyzed by metals present in MPA-Se. Regarding metabolism, there was an increase in the enzymes pyruvate kinase and phosphofructokinase (PK and PFK) in the liver, while in muscle there was an increase in hexokinase (HK) and a decrease in malate dehydrogenase (MDH), while in the brain there was an increase, the triglyceride metabolite decreased in the liver and brain, increased in muscle. The aminotransferases: alanine aminotransferase (ALT) and aspartate aminotransferase (AST) increased in the muscle, but alkaline phosphatase (ALP), lactate dehydrogenase (LDH) and glucose showed changes only in the brain and the protein showed no significant difference. With these results it is possible to verify a picture of oxidative stress due to the presence of metals, components of MPA. Thus, the results allow demonstrating the deleterious effects of MPA-Se in the aquatic environment, negatively affecting bullfrog tadpoles, by causing oxidative stress induced by the metals incorporated in it. This effect can be evidenced by the responses of the biochemical biomarkers investigated in the different organs.
O divino e o terreno na transcriação de 「羽衣」: Hagoromo, o Manto de Plumas
(Universidade Federal de São Carlos, 2025-05-14)
Ramos, Angélica Alves
;
Martha, Diana Junkes Bueno
;
https://lattes.cnpq.br/1857520068239671
;
https://lattes.cnpq.br/5910949734856589
Product of the entertainments offered at Buddhist temple festivals and Shinto shrines in the Muromachi Period (1336-1573), Noh Theater is a classical Japanese theatrical art that harmoniously combines dance, music and poetry, whose structural organicity is an amalgamation of the precepts and practices of Shintoism and Buddhism. These religious matrices are evident in the Noh play Hagoromo (The Feathers Mantle), which features the meeting of the divine (Buddhist deity) and the earthly (human), in which the celestial maiden’s sacred mantle was stolen by a fisherman, causing the earthly corruption and spiritual impurity. As a theatrical ideogram, Hagoromo presents a poetic fabric composed of complex and diverse threads, inspired by sacred elements such as Buddhist sutras, the gestures of Shinto dance (kagura), and reinterpretation of mythological legends, among others. Featuring elements that are seemingly untranslatable, Hagoromo was transcreated by Haroldo de Campos, into a “poetically effective text, meticulously crafted, autonomous as a work of verbal art” (2006, p.16). Given that transcreation is a creative form of translation aimed not only at rendering poetic expression and content, but also at capturing the poem’s intent by (re)creating its significant forms, this thesis seeks, through a critical reading, to understand how is configured the encounter between the divine and the earthly, originating mainly from Buddhism and Shintoism, which are intrinsic to the architecture and materiality of Noh, in the translation of the Noh Theater play Hagoromo, o Manto de plumas by Haroldo de Campos (2006). Grounded in the theory of transcreation (CAMPOS, 2011) and the ideogramic method of composition (CAMPOS, 1977), we aim to comprehend the critical dialogue established beteen the transcribed text and the source text, focusing on extratextual elements, mainly, through the visual and metaphorical complexity of the ideogram.
Efeitos da exposição de girinos de rã-touro, Aquarana catesbeiana (Shaw, 1802) ao material particulado atmosférico sedimentável.
(Universidade Federal de São Carlos, 2025-05-14)
Fernandes, Isabela Ferreira
;
Carvalho, Cleoni dos Santos
;
https://lattes.cnpq.br/7233550271936621
;
https://lattes.cnpq.br/7473518658996350
;
Irazusta, Silvia Pierre
Air pollution is a major concern today, as it not only affects human health but can also have negative effects on fauna and flora. This type of pollution originates from fuel combustion and industrial production, for example, and can give rise to the so-called atmospheric particulate matter (MPA), popularly known as “black dust”. Given the possibilities of this MPA formation, it is necessary to evaluate the content of this material, as well as the effects it can cause on aquatic organisms. Bullfrog tadpoles, Aquarana catesbeiana, were exposed to the sedimentable atmospheric particulate matter MPA-Se (1g L-1, 96h) for analysis of metal/metalloid and biochemical biomarkers (oxidative stress, neurotoxicity and metabolism). After 96h of exposure, the water in the MPA-Se contained 18 of the 28 metals/metalloids detected in the MPA. Iron (Fe56) and aluminum (Al) showed the highest concentrations, chromium (Cr), manganese (Mn), lead (Pb) and copper (Cu) increased 10 to 20 fold, titanium (Ti), vanadium (V), strontium (Sr), rubidium (Rb), cadmium (Cd), tin (Sn) and nickel (Ni) increased 1 to 3 fold compared to the control. The bioaccumulation of metals/metalloids in the exposure water varied significantly among the organs, with the muscle and liver showing the highest concentrations of metals, followed by the brain. Lipid peroxidation (LPO) and malondialdehyde (MDA) increased only in the muscle, while carbonyl proteins (PC) increased in the liver and brain. Regarding the enzyme nitric oxide synthase (NOS), there was an increase in the liver and brain in the group exposed to MPA-Se. Catalase (CAT) activity decreased in the liver and muscles, while glutathione peroxidase (GPx) activity increased in the liver and kidneys and decreased in muscle. Glutathione S-transferase (GST), responsible for detoxification, increased in the liver and decreased in muscles and kidneys. Cholinesterase (ChE) activity increased only in muscle. The results indicate oxidative stress due to oxidation catalyzed by metals present in MPA-Se. Regarding metabolism, there was an increase in the enzymes pyruvate kinase and phosphofructokinase (PK and PFK) in the liver, while in muscle there was an increase in hexokinase (HK) and a decrease in malate dehydrogenase (MDH), while in the brain there was an increase, the triglyceride metabolite decreased in the liver and brain, increased in muscle. The aminotransferases: alanine aminotransferase (ALT) and aspartate aminotransferase (AST) increased in the muscle, but alkaline phosphatase (ALP), lactate dehydrogenase (LDH), and glucose showed changes only in the brain and the protein showed no significant difference. With these results, it is possible to verify a picture of oxidative stress due to the presence of metals, components of MPA. Thus, the deleterious effects caused by MPA to tadpoles could be identified by biomarkers. Thus, the results contribute to the understanding that MPA-Se has a deleterious effect on the aquatic environment, negatively affecting bullfrog tadpoles, in different ways and levels in relation to the organs analyzed.
Mapeamento de dependências não intrusivo em tempo real para microsserviços no Kubernetes
(Universidade Federal de São Carlos, 2025-05-15)
Silva, Alcides Mignoso e
;
Guardia, Hélio Crestana
;
https://lattes.cnpq.br/1780902767520967
;
https://lattes.cnpq.br/5974353833355597
The ever-evolving landscape of microservice architecture demands innovative solutions for improved performance and environment management, especially under varying request loads. While strategies developed for managing monolithic systems have been effective in the past, they may not be effective in dealing with the challenges of the microservice-based applications, which often present a high level of interdependency between services. Considering the potential benefits of knowing the relationships among microservices and understanding their behaviors, this work introduces a modular and adaptive tool that maps the microservice dependencies within systems and use the data to provide insightful information about the services’ communications patterns. The central hypothesis this study posits is that by using existing network tools, such as Cilium, it is possible to automatically map service dependencies and communication ratios in a microservices environment and use the connections information to generate dependency data that can serve as input for application management. Given its versatility and large adoption, Kubernetes is the chosen development platform, enhancing the scope and usability of the results obtained with this research. Cilium and its eBPF-based technology are used for collecting the information needed for automatically creating the envisioned microservices communication maps, and authoring applications are introduced to transform and process the collected information. The results of this research may benefit practitioners seeking to optimize the architecture of their microservice-based applications, and also contribute to the broader field of application development by emphasizing the importance of considering services dependencies and characteristics in services management. Thus, the findings shall inspire future research endeavors to explore innovative approaches in addressing the unique challenges posed by microservices architecture by utilizing the intrinsic communication information between services.
Obtenção e caracterização de chapas multicamadas de ligas de cobre dissimilares por meio de laminação acumulada
(Universidade Federal de São Carlos, 2025-05-15)
Moreira, Filipe Pini
;
Magalhães, Danielle Cristina Camilo
;
https://lattes.cnpq.br/6720419979264921
;
https://lattes.cnpq.br/5486724956564584
;
https://orcid.org/0009-0008-2934-7629
Microestrutura e propriedades de desgaste e corrosão de revestimentos à base de FeCrMoNbB e de CrCoNi produzidos por plasma com arco transferido
(Universidade Federal de São Carlos, 2025-05-16)
Rodrigues, Luana Cristina Miguel
;
Koga, Guilherme Yuuki
;
https://lattes.cnpq.br/0933095081175012
;
https://orcid.org/0000-0003-0792-1139
;
Botta Filho, Walter José
The application of protective coatings on components requiring resistance to wear and corrosion has been widely investigated. However, achieving surfaces that simultaneously combine high resistance to both phenomena is a significant challenge. In this context, selecting the appropriate alloy system and processing method for coating production is essential. The present study aimed to investigate metal coatings processed by Plasma Transferred Arc (PTA) using two alloys with distinct microstructural characteristics to achieve specific properties. The alloys studied were: an Fe-based alloy (Fe68Cr8Mo4Nb4B16) and a multiprincipal element alloy (Cr40Co40Ni20). The PTA technique has proven effective in producing coatings with excellent wear and/or corrosion resistance properties, in addition to allowing the production of thick, dense coatings with good metallurgical bonding between the substrate and the coating. The two alloys were gas-atomized and subsequently characterized by scanning electron microscopy (SEM), optical microscopy (OM), X-ray diffraction (XRD), and differential scanning calorimetry (DSC, for the glassy alloy powder). The PTA-produced coatings were characterized by XRD, SEM, OM, transmission electron microscopy (TEM), ASTAR (automatic crystallographic orientation mapping system), and confocal microscopy (CM). Vickers microhardness was measured on the top of the polished coatings. Tribological tests were conducted according to ASTM G133-05 standards on polished surfaces (Al2O3 1-μm) using a reciprocating pin-on-plate configuration. Electrochemical tests included the analysis of potentiodynamic polarization curves and electrochemical impedance spectroscopy in a 0.6M NaCl electrolyte. The results indicate that the PTA-produced coatings, using alloys with innovative microstructures, provide good tribological and/or electrochemical properties.
Produção acadêmica sobre casas abrigo: análise de teses e dissertações da BDTD/IBICT
(Universidade Federal de São Carlos, 2025-05-16)
Paula, Isabel Cristina de
;
Rigolin, Camila Carneiro Dias
;
https://lattes.cnpq.br/2388584081961836
;
https://orcid.org/0000-0002-9400-2837
;
https://lattes.cnpq.br/6133894538138927
In recent years, there have been no significant reductions in violence against women, despite the existence of several legal and institutional mechanisms in Brazil aimed at their protection and assistance. Public policies, specific legislation and the construction of public facilities have been implemented with the aim of preventing and mitigating gender-based violence. Among these mechanisms, shelters, regulated by national laws and guidelines, are welcome spaces for women and their children who are at imminent risk of death. This study aims to analyze theses and dissertations available in the Database of Theses and Dissertations (BDTD) for being a free database, linked to the Federal government, of the Brazilian Institute of Information in Science and Technology (IBICT), to understand how scientific production has addressed the issue of shelters. To this end, a narrative literature review on shelters and violence against women was conducted. Data collection did not follow a pre-determined time frame, resulting in the selection of one thesis and 14 dissertations. The methodology employed included the application of bibliometric parameters and content analysis on the collected works. The results of the research indicate a greater concentration of works in the state of São Paulo, as well as a predominance of research conducted by wome. There was also a noted limited number of complete theses and dissertations on the subject; it was observed that the analyzed studies mainly focus on women and are based on current legislation related to the protection and assistance of victims of violence and the fragility of services, such as lack of funding and specialized technical staff.
Determinação de aminas biogénicas em diferentes amostras de cogumelos por electroforese capilar
(Universidade Federal de São Carlos, 2025-05-16)
Guambe, Belton Henrique Condela
;
Pereira, Elisabete Alves
;
https://lattes.cnpq.br/3733006795539833
;
https://orcid.org/0000-0001-7016-9862
;
https://lattes.cnpq.br/7917019322660052
Mushrooms are widely consumed across various cultures due to their high nutritional value. However, during storage and processing, they may be susceptible to the formation of biogenic amines (BAs) as a result of decarboxylase enzyme activity from colonizing bacteria. BAs, produced through the degradation of amino acids, can pose health risks such as food intoxication when present at elevated levels. Although regulations exist for histamine in certain fish species and their derivatives, there is no comprehensive legislation covering all common amines in foods, including mushrooms. This study aimed to develop an analytical method for the simultaneous determination of putrescine (PUT), histamine (HIS), cadaverine (CAD), spermidine (SPD), spermine (SPM), tyramine (TYR), and tryptamine (TRY) in mushroom samples using capillary electrophoresis (CE). The BAs were separated using a running buffer composed of 15 mmol L⁻¹ imidazole, 30 mmol L⁻¹ crown ether, 7 mmol L⁻¹ α-cyclodextrin, and 3.5 mmol L⁻¹ EDTA, with indirect detection at 214 nm, under a voltage of 15 kV and hydrodynamic injection mode (30 mbar/5 s). The BAs were extracted from mushroom samples using a 0.1 mol L⁻¹ HCl solution. The analytical curve was linear in the range of 2.0 to 10.0 mg L⁻¹ for each amine (R² ≥ 0.998). Repeatability and intermediate precision ranged from 0.6 to 1.9% and 0.9 to 14%, respectively. The method showed satisfactory limits of detection (0.25–0.60 mg L⁻¹) and quantification (0.76 – 1.82 mg L⁻¹), enabling the detection and quantification of low concentrations of BAs in mushroom samples. Recovery values ranged from 94.7 to 110%. The developed method was successfully applied to different mushroom varieties (Hiratake, Champignon de Paris, and Portobello). The concentrations of BAs in the mushroom samples ranged from 1.5 to 14 mg kg⁻¹. Due to the absence of specific regulatory limits for mushrooms, the results were compared to the limits established for other food products and were found to be below the maximum permitted levels, indicating the safety of the analyzed samples for consumption.
Caracterização da prática dos terapeutas ocupacionais na atenção à dor oncológica de pacientes hospitalizados em cuidados paliativos
(Universidade Federal de São Carlos, 2025-05-16)
Souza Junior, Odair José Mendes
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Bombarda, Tatiana Barbieri
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https://lattes.cnpq.br/8070700589653226
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https://orcid.org/0000-0002-9478-7945
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https://lattes.cnpq.br/0331225482398514
Pain is one of the most common symptoms experienced by people with cancer in palliative care. Palliative care requires an interdisciplinary and multidisciplinary approach, considering the premises of comprehensive care. The occupational therapist is part of the care team, aiming to promote the maintenance of the occupational repertoire of these individuals with pain. The study aimed to characterize the practice of occupational therapists in the care of oncological pain of hospitalized patients in palliative care. This is descriptive research with a qualitative approach, and occupational therapists working in hospital wards, in oncological palliative care, with a minimum of 3 months of experience were eligible for participation. Participants were recruited using the snowball method and data were collected through interviews on a virtual platform, which were guided by a characterization form and interview script. The information from the characterization form was analyzed using simple descriptive statistics and the interview data were processed using Bardin's thematic analysis. Ten occupational therapists participated, with an average of approximately 5 years of experience in hospital settings and 4 years in palliative care. The interview data were grouped into 3 categories. The first category was called “Modus operandi of occupational therapists’ practice in cancer pain care” and covered content related to the operationality of the care offered. In this sense, 4 subcategories emerged: Work routine, Knowledge and use of pain assessment instruments, Resources and techniques used for cancer pain management, and Documentation in medical records. The second category, called “Considerations on the repercussions of cancer pain in occupations”, involved information on the professionals’ perception of the influences of pain in occupations. Finally, the category “Challenges faced in cancer pain management” presented the manifestations about difficulties faced in the context of this practice. It was found that there are evaluative weaknesses in the assistance described, regarding the appropriation of instruments and restriction of evaluative components considered in the assessment and reassessment of pain, which may hinder the production of indicators on the effectiveness and importance of the occupational therapist in the team. On the other hand, perspectives of action were noted in which professionals consider associations of pain with occupations, mainly regarding the interference of the symptom in activities of daily living, a factor that characterizes specificities of this professional activity.
Obtenção de zonas de manejo para fertilidade e estoque de carbono no solo em áreas de pastagem, integração pecuária-floresta e eucalipto
(Universidade Federal de São Carlos, 2025-05-16)
Daniel Filho, Paulo
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Figueiredo, Eduardo Barretto de
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https://lattes.cnpq.br/0436224807041986
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https://lattes.cnpq.br/2114435488760881
The definition of management zones is a fundamental strategy to improve productive and environmental efficiency in agriculture. This study aimed to identify specific management zones for soil fertility and carbon stock, evaluating four different land use systems in the Cerrado of Goiás: monoculture pasture (P1), polyculture pasture (P2), livestock-forest integration (IPF) and eucalyptus silviculture (EM). A total of 996 soil samples were collected, 830 of which were destined for carbon analysis and 166 for fertility. The data were processed via geostatistical interpolation (ordinary kriging), using the spherical model, and standardized by fuzzy logic to generate thematic maps. The results revealed that the IPF presented the highest average value of CEC (3.28 cmolc dm⁻³) and base saturation (38.58%), while silviculture presented the lowest V% (25.81%). For phosphorus, forestry also stood out with the highest average (6.83 mg dm⁻³), and monoculture pasture presented the lowest values in several attributes. A significant correlation was observed between soil fertility and carbon stock, with emphasis on the most fertile areas presenting higher C contents. The adopted methodology demonstrated effectiveness in defining differentiated management zones, promoting a more rational use of resources and contributing to sustainable agricultural practices adapted to local edaphoclimatic conditions.
A estética do Funk: articulações entre vestuário e território
(Universidade Federal de São Carlos, 2025-05-16)
Garcia, Gabriele Leticia
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Mariano, Neusa de Fátima
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https://lattes.cnpq.br/5003743301847104
This final project in Geography aims to analyze the concepts of fashion, identity and territoriality with the aim of introducing the so-called Aesthetics of Funk in the current context of globalization, understanding how the fashion expressed by this culture can represent a form of territorial resistance. Therefore, the work initially discusses the history of Brazilian funk, from its origin as a culture imported from the United States to its consolidation as a national culture, endowed with ways of life, symbologies, slang and others. After that, the work discusses the conceptualization of identity according to Stuart Hall's precepts, understanding that the manifestations of identity through clothing in the current historical period must reflect the particularities of the postmodern, that is, increasingly fragmented subjects. Thus, thinking about the question of the expression of the identity of the subjects participating in funk culture, the work discusses the Aesthetics of Funk, understanding it as a production of the Brazilian outskirts that, in addition to being fashionable, is also struggle and resistance. To this end, the work included a bibliographic review of its main concepts in order to provide a joint and reflective analysis of previously produced knowledge, articulating the issues of fashion, identity and territoriality. Finally, it concludes that the Aesthetics of Funk represents much more than the daily lives of residents of the outskirts who actively participate in the construction of this culture, but is also loaded with meanings, which are not passed on globally when this style becomes a trend on the internet.
Fé e materialismo: concordâncias entre o cristianismo católico e o marxismo
(Universidade Federal de São Carlos, 2025-05-16)
Loureiro, Murilo Paraluppi
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https://lattes.cnpq.br/7016915324466152
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https://orcid.org/0000-0001-5224-3117
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Souza, André Ricardo de
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https://lattes.cnpq.br/7016915324466152
Study of historical aspects of the trajectory of Christianity specific to Roman Catholicism in relation to other Christian branches and its elective affinity with anti-capitalist thought and activism, which led to the formation of Marxist militants guided by religious values. The work also discusses some aspects of a contemporary Brazilian Christian facet, closely identified with liberal capitalism, which is neo-Pentecostalism.