Browsing by Issue Date, starting with "2025-05-14"

Filter results by year or month

Now showing 1 - 20 of 1995

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
;
Bombarda, Tatiana Barbieri
;
https://lattes.cnpq.br/8070700589653226
;
https://orcid.org/0000-0002-9478-7945
;
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
;
Figueiredo, Eduardo Barretto de
;
https://lattes.cnpq.br/0436224807041986
;
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
;
Mariano, Neusa de Fátima
;
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
;
https://lattes.cnpq.br/7016915324466152
;
https://orcid.org/0000-0001-5224-3117
;
Souza, André Ricardo de
;
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.
Análise experimental do comportamento e durabilidade de vigas de concreto armadas à flexão com barras de GFRP submetidas à ação de solução salina
(Universidade Federal de São Carlos, 2025-05-19)
Mazzú, Amanda Duarte Escobal
;
Possan, Edna
;
https://lattes.cnpq.br/0581995805825838
;
https://orcid.org/0000-0002-3022-7420
;
Dalfré, Gláucia Maria
Considering the problems caused by corrosion of steel reinforcement in reinforced concrete structures, often associated with the action of chloride ions, Fiber Reinforced Polymers (FRP), which are non-metallic materials with high mechanical strength, magnetically inert and with good corrosion resistance, have shown to be a viable alternative. However, this material is also subject to degradation, and its relatively recent application in concrete structures implies a lack of data regarding its long-term behavior and durability, especially in Brazil. To anticipate these results, the application of accelerated degradation protocols combined with mechanical tests allows for a better understanding of the mechanical behavior and durability of the material in exposure environments over predefined periods. The objective of this study was to evaluate the durability of full-scale concrete beams reinforced with steel and Glass Fiber Reinforced Polymer (GFRP) bars using the accelerated conditioning protocols of ACI 440.9R (2015). The experimental program initiated by Mazzú (2020) was completed, exposing reinforced concrete beams to laboratory conditions and saline solution for 1000, 5000, and 10000 hours. Three-point bending tests were conducted to assess the mechanical behavior and durability after the complete accelerated degradation cycle. An additional experimental program was carried out in which GFRP bars, both unprotected and protected by concrete, were subjected to the same conditions as the beams and evaluated through mechanical and microstructural tests to investigate their durability and degradation mechanisms. After 5000 hours of saline immersion, the GFRP-reinforced beams showed a 12% reduction in load capacity and a 13% reduction in stiffness, demonstrating the efficiency of the applied protocol in accelerating degradation. GFRP bars protected by concrete showed greater reduction in tensile strength after 10000 hours of exposure compared to unprotected GFRP bars (62.99% and 47.85%, respectively), due to the influence of concrete alkalinity. However, the degradation mechanism was the same for both conditions, mainly based on polymer matrix hydrolysis.
Internacionalização e mobilidade acadêmica na Universidade Federal de São Carlos (UFSCar): análise da participação docente e discente nos programas da Associação de Universidades Grupo Montevidéu (AUGM)
(Universidade Federal de São Carlos, 2025-05-19)
Andrade, Bruno Soto de
;
Rigolin, Camila Carneiro Dias
;
https://lattes.cnpq.br/2388584081961836
;
https://orcid.org/0000-0002-9400-2837
;
https://lattes.cnpq.br/7903798653673159
This study identifies, systematizes, and quantifies data on international academic mobility at the Federal University of São Carlos (UFSCar), with a particular focus on the programs of the Montevideo Group Association of Universities (AUGM), aiming to contribute to the development of institutional AUGM mobility indicators at UFSCar. Through a comprehensive literature review, the research seeks to analyze the internationalization process, the internationalization of science and technology, and the role of internationalization in higher education, especially regarding the academic mobility of undergraduate and graduate students, as well as faculty members. The methodological approach adopted is documentary, descriptive, quantitative and exploratory in nature, utilizing data from UFSCar’s Office for International Affairs. The objective is to collect, organize, and structure the data in alignment with the research objectives. The study maps variables such as participants' gender, age group, home and host institutions and countries, as well as financial support mechanisms. The findings indicate UFSCar’s active engagement in the AUGM ESCALA Programs. However, in the context of undergraduate mobility, the absence of systematized data impairs a comprehensive assessment of the outcomes and institutional impacts of both incoming and outgoing mobilities. Nonetheless, a significant reduction in the availability of places in the Undergraduate Student ESCALA Program suggests a potential correlation with changes in the funding structure for incoming mobilities. Regarding graduate-level mobility, the data suggest that the Graduate Student ESCALA Program was affected by the COVID-19 pandemic, yet the relatively low financial requirements point to the potential for expansion. In the ESCALA Faculty Program, the data reveal a higher number of incoming faculty to UFSCar compared to outgoing mobility. In terms of academic disciplines, a predominance of foreign students and faculty in the Exact Sciences is observed, whereas UFSCar students tend to seek mobility opportunities in the Humanities. The data also show a higher participation of female students in mobility activities at both undergraduate and graduate levels. Finally, the lack of data regarding race and ethnicity is noted, which constitutes a relevant gap, particularly within the context of Brazilian higher education institutions.
Programa de Gestão e Desempenho: implementação, desafios e efeitos na percepção dos servidores e gestores da UFSCar – Campus Araras
(Universidade Federal de São Carlos, 2025-05-19)
Peres, Maiara Fernanda
;
Almeida, Luiz Manoel de Moraes Camargo
;
https://lattes.cnpq.br/5053214724598522
;
https://orcid.org/0000-0003-3066-9170
;
https://lattes.cnpq.br/0432371672287002
The social distancing measures imposed by the COVID-19 pandemic have significantly transformed the dynamics of working practices. Faced with this pandemic scenario, the Federal University of São Carlos (UFSCar) adopted teleworking to ensure the continuity of its activities. In 2022, UFSCar implemented the Management and Performance Program (PGD), which regulated this change, transforming the logic of the services provided. This research aims to analyze the perceptions of civil servants at the Federal University of São Carlos (UFSCar), Araras campus, about the Management and Performance Program (PGD). The analysis included both employees participating and not participating in the program, as well as the managers responsible for monitoring deliveries, considering the diversity of activities carried out at the University. To this end, a mixed approach was adopted, combining qualitative methods, which explored the perceptions of individuals, and quantitative methods, which allowed patterns and trends to be analyzed. The research also included participant observation, providing a broader understanding of the context studied. The results obtained provide support for improving the DMP, helping to ensure that organizational transformations meet institutional demands and promote the continuous improvement of public services.
A dual approach with lignin and nanolignin: reinforcing UV stability and sustainability in PVA matrices
(Universidade Federal de São Carlos, 2025-05-19)
Freitas, Amanda de Sousa Martinez de
;
Rodrigues, Jéssica de Souza
;
Fré, Lucas Victor Benjamim Vasconcelos
;
Vieira, Henrique Otávio Salles
;
Nascimento, Maria Eduarda da Silva
Kraft lignin (KL) and its acetic acid-fractionated derivatives were evaluated for their antioxidant and ultraviolet C (UV-C)-absorbing properties to mitigate the photooxidative degradation of polyvinyl alcohol (PVA). PVA films were prepared with 4 % (w/w) KL macroparticles - including unfractionated KL and the fractionated forms KL30, KL40, and KL50 - and with 0.4 % (w/w) lignin nanoparticles (NP), derived from the same fractions (named NPKL, NP30, NP40, and NP50). All formulations, including the control (pure PVA), were blended with 10 % (w/w) NPK fertilizer (nitrogen‑phosphorus‑potassium, 10–10-10) and plasticized with glycerol for film casting. After 21 days of UV-C exposure, films containing LNP retained over 90 % transparency, compared to ~70 % for pure PVA. Fourier-transform infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC) confirmed reduced photooxidative and thermal degradation in lignin-containing films, especially those with KL30 and NP30. Biodegradation assays using respirometric CO₂ analysis showed accelerated release for NP30 (up to 90 mg after 20 days), reflecting enhanced microbial activity. Leaching assays demonstrated controlled release of NPK ions over 40 days in films with NP. In mulch film application tests with cherry tomato, PVA + NP30 showed seedling development comparable to commercial mulch and superior to control films. These results confirm the potential of NP as sustainable, multifunctional additives for UV stabilization and controlled nutrient delivery in biodegradable agricultural films.
Envolvimento da neurotransmissão ocitocinérgica do núcleo paraventricular do hipotálamo na modulação da ansiedade e nocicepção induzidas pelo convívio com o coespecífico com dor crônica em camundongos machos e fêmeas
(Universidade Federal de São Carlos, 2025-05-20)
Ribeiro, Heloísa Máximo
;
Souza, Azair Liane Matos do Canto de
;
https://lattes.cnpq.br/2352004564367849
;
https://orcid.org/0000-0002-0828-7670
;
https://lattes.cnpq.br/6908893243674542
Pain is considered a “sensory and emotional experience” that may or may not be related to tissue damage. Empathy is defined as “the sharing of emotions between individuals and the adoption of the other individual's point of view”, which is fundamental to their coexistence. Studies show that mice living with a partner in chronic pain exhibit increased anxiety-like behaviors and hypernociception. Oxytocin, a neurohormone agonist of oxytocinergic receptors, produced and released by the hypothalamus-neurohypophysis system, is involved in affective processes, stress, cognition and social behavior, and its reduction is related to psychiatric disorders such as depression and anxiety. The paraventricular nucleus of the hypothalamus (PVN) is one of the sites of oxytocin production. Considering that nociceptive processes promote an increase in oxytocin synthesis in the PVN, and that living with a partner with chronic pain promotes an increase in FosB in the same region, this study aimed to evaluate the involvement of oxytocinergic neurotransmission in the PVN in the modulation of anxiety and nociception induced by living with a partner with chronic pain in male and female mice. To this end, male and female Swiss-Albino mice were housed in quartets after weaning. In each quartet, one animal underwent sciatic nerve constriction surgery, becoming a pain demonstrator, or similar surgery, becoming a Sham control, after 14 days of cohabitation. The observer animals (Ob-Sham and Ob-CNC) had a cannula implanted in the skull, directed to the PVN, and on the 28th day of the experiment received intra-PVN injections of saline 0.9%, oxytocin (1.0 µg/0.1µL) and/ or atosiban (0.4 µg/0.1µL, oxytocin receptor biased antagonist). Subsequently, they were evaluated in the EPM and by the writhing test for anxiety-like behaviors and nociception, respectively. As a result, living with a conspecific with pain promoted hypernociception in males and females, and increased anxiety-like behaviors in males. In addition, intra-PVN injections of oxytocin were able to reverse hypernociception in both sexes. Regarding anxiety-like behaviors, oxytocin failed to reduce them in males but did reduce them in Ob-CNC females compared to the Ob-CNC saline control. Atosiban reduced hypernociception in males and changed some behaviors assessed in the EPM of males and females. Combined injections of atosiban and oxytocin in males tended to increase anxiety-like behaviors in Ob-Sham and reduce it in Ob-CNC, with no effect on nociception. Therefore, the present study found evidence of the participation of the PVN oxytocinergic system in the control of hypernociception and anxiety-like behaviors in male and female mice that lived with a conspecific in chronic pain.
Propagação de rumores em redes com triângulos
(Universidade Federal de São Carlos, 2025-05-21)
Silva, Larissa Oliveira Moutinho da
;
Peron, Thomas Kauê Dal'Maso
;
https://lattes.cnpq.br/1087642697727776
;
https://lattes.cnpq.br/2117105891402308
This study investigates the influence of the clustering coefficient on the dynamics of rumor propagation in complex networks, comparing it with the classical configurational model. We use the Maki-Thompson model as a basis for simulating rumor dissemination and analyze the limitations of the configurational model in reproducing the structural properties of real networks. To control the clustering coefficient without altering other structural metrics, we adopt the approach independently proposed by Newman and Miller. Through simulations, we evaluate how local clustering affects information dissemination, highlighting its impact on rumor propagation. Our results indicate that networks with a high clustering coefficient tend to restrict propagation to local communities, while networks with low clustering allow faster and more global dissemination. However, we observe that the influence of clustering on network dynamics only becomes significant when degree-degree correlations can no longer be neglected, as both properties are intrinsically related. Furthermore, we show that as the average degree increases, the influence of clustering becomes negligible, as global connectivity starts to dominate the process. By analyzing metrics such as propagator density and susceptibility, we find that clustering significantly affects the system’s response to small fluctuations, especially in networks with a low average degree. We conclude that network structure can be manipulated to either optimize or contain the spread and suggest future research to explore models that more realistically incorporate the influence of local substructures on network dynamics.
Análise da segurança hídrica pela abordagem Nexus água, energia e alimento com uso de tecnologias sociais. Estudo de caso: município de Paragominas, estado do Pará
(Universidade Federal de São Carlos, 2025-05-21)
Bueno, Lívia Vitória França
;
Ventura, Katia Sakihama
;
https://lattes.cnpq.br/0765182109837821
;
https://orcid.org/0000-0003-3853-668X
;
https://lattes.cnpq.br/9681746577695417
Water security has become one of the main challenges for sustainable development, especially in territories that face deficiencies in basic infrastructure, such as sanitation, regular access to drinking water and energy, in addition to the low presence of effective public policies, a common reality in many rural communities in the eastern Amazon. This study aimed to analyze water security in Paragominas (PA) through the Water, Energy and Food Nexus approach, evaluating the applicability of social technologies as sustainable solutions, based on technical and socio-environmental criteria obtained from the literature, classifying them according to their suitability for rural, urban or mixed contexts. The methodology adopted consisted of a bibliographic review of technical studies, manuals and scientific articles, with the organization of information in analytical tables, application of Nexus criteria for sectoral evaluation and preparation of a final summary table. Ten social technologies were analyzed, including dry toilets, solar water pumping, biodigester septic tanks and mini-cisterns. It is concluded that the integration between social technologies and the Nexus AEA approach contributes significantly to local water security, offering viable solutions for promoting sustainability, social inclusion and community autonomy in regions with greater lack of infrastructure.
Mapas Conceituais Colaborativos: uma proposta de ensino para desenvolvimento dos Eixos Estruturantes da Alfabetização Científica em uma turma de Ensino Fundamental 2
(Universidade Federal de São Carlos, 2025-05-21)
Leme, Idelzuite Azevedo Alcântara
;
Santos Junior, João Batista dos
;
https://lattes.cnpq.br/5615071332323472
;
https://orcid.org/0000-0002-1952-2242
;
https://lattes.cnpq.br/6375788560224601
In a context of falling vaccination coverage rates and distrust regarding the safety and efficacy of vaccines, this study proposes the development and application of a Potentially Significant Teaching Unit (LUPU) that addresses: how vaccines work; their role in maintaining individual and collective health; and the process of vaccine production and approval. Using the Theory of Meaningful Learning (TAS) as a theoretical framework and the Conceptual Map (CM) as a teaching tool, this research project aimed to investigate the potential of using collaborative CM as a subsidy for the implementation of Scientific Literacy (SC) in a seventh-grade class of a municipal school in Sorocaba. The research, classified as exploratory qualitative, used as data collection instruments the CMs produced by the students, the teacher's Logbook notes, and the audio transcripts of the CM presentations and three interviews conducted after the application of the UEPS. As an indication of the development of SC, the occurrence of the three Structuring Axes of Scientific Literacy (EEAC) proposed by Sasseron (2008) was considered: the first axis is the understanding of fundamental scientific terms and concepts; the second axis is the understanding of the nature of science and the ethical and political factors related to its practice; and the third axis is the understanding of the relationships between science, technology, society, and the environment. For the analysis of the MC, the four reference parameters of a good conceptual map described by Aguiar; Correia (2013) were observed. In the interactions between the students, we sought to observe the occurrence of the four stages of the collaborative knowledge construction process: externalization; elicitation; consensus oriented towards integration or conflict; and integration process. We also point out that the first three processes were described by Fischer et al (2002) and the last by Aguiar; Ballego; Correia (2022). As a result, it is worth highlighting that it was possible to observe the presence of the first and third EEAC; regarding the second axis, our hypothesis is that it would be necessary to have a greater number of classes to carry out discussions and reflections that the axis demands. The analysis of the MCs prepared by the groups throughout the UEPS indicated advances in their structure with network-type MC and the presence of cross-links in two groups, and only in one of the groups did the data indicate that new training was necessary tbetter master the mapping technique. Regarding the interaction between group members, the data indicated the occurrence of four stages of the collaborative knowledge construction process.