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Interfacial engineering of van der Waals heterostructures: impacts on the excitonic and valley properties
(Universidade Federal de São Carlos, 2024-08-27)
Brito, Caique Serati de
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Barcelos, Ingrid David
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https://lattes.cnpq.br/8297155290206349
;
https://orcid.org/0000-0002-5778-7161
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Gobato, Yara Galvão
The study of two-dimensional (2D) materials has attracted significant attention due to their unique physical properties and potential applications in optoelectronics, spintronics, and quantum technologies. Transition metal dichalcogenides (TMDs) are a crucial class of these materials, offering exceptional electronic and optical properties, such as strong excitonic effects and valley selectivity. Additionally, the emergence of layered magnetic materials, such as CrSBr, has opened up new opportunities for exploring magnetic effects in 2D heterostructures. Combining various 2D materials through interfacial engineering enables the realization of unique properties, including superconductivity, Mott insulators, moiré effects, exciton hybridization, and single-photon emitters (SPE), providing unprecedented control over physical properties. This thesis investigates the optical properties of semiconductor TMD monolayers in van der Waals heterostructures (vdW-HS), focusing on their excitonic and valley properties. Through systematic studies of photoluminescence (PL) and magneto-PL, the research explores the impact of local and smooth strain, charge transfer, moiré patterns, and magnetic proximity effects on these properties. Our findings demonstrate the generation of SPEs in WSe2 monolayers transferred to polished borogermanate glass doped with Tb3+. The nanoroughness of the glass surface, resulting from polishing, imposes a local strain on the TMD, directly influencing SPE formation. Moreover, the substrate morphology, modified by Tb3+ doping, plays a crucial role in the hybridization between defect-localized and dark excitonic states, as evidenced by magneto-PL measurements in Voigt geometry. The impact of moiré patterns in MoSe2/WS2 heterostructures with stacking angles of 0º and 60º was studied using circularly polarized magneto-PL measurements. The obtained g-factors were very similar for both high-symmetry angles, indicating weak hybridization of the conduction bands. Additionally, PL peaks at lower energies exhibited reduced g-factors, suggesting exciton confinement due to the moiré potential. These results are consistent with the developed theoretical model, which predicts weak hybridization due to type I band alignment. The combination of MoSe2 monolayers with CrSBr, an antiferromagnetic material with in-plane magnetic ordering, revealed that the PL peaks of MoSe2 acquire linear polarization orthogonal to the anisotropic emission of CrSBr, with an enhanced effect in the ferromagnetic phase. Circularly polarized PL measurements were conducted with magnetic fields ranging from -9 to 9 T along the three principal crystal axes of CrSBr. The study revealed that the intensity variations of the MoSe2 exciton and trion peaks closely follow the behavior of CrSBr, reflecting the transition from antiferromagnetic to ferromagnetic ordering. These variations were attributed to charge transfer effects and type III band alignment. The valley Zeeman effect was also observed, with distinct g-factors for positive and negative magnetic fields, indicating asymmetric coupling for the K and K’ valleys of MoSe2 to the magnetic ordering of CrSBr. These findings highlight the complex interaction between TMD monolayers, layered magnetic materials, and their interfaces, demonstrating how interfacial engineering can be employed to modulate physical properties in 2D systems. This research contributes to the understanding of condensed matter physics and suggests pathways for integrating 2D materials into advanced quantum information and spintronic technologies.
Combinar o corte de trepadeiras com o plantio de mudas de árvores é a melhor estratégia para restaurar as bordas de florestas estacionais semideciduais
(Universidade Federal de São Carlos, 2024-08-27)
Santos, Guilherme Aparecido Melo
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Viani, Ricardo Augusto Gorne
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https://lattes.cnpq.br/3250752369062840
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Martini, Valéria Forni
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https://lattes.cnpq.br/0686674300788674
Due to the negative impacts of overabundant climbers on the structure of tropical forests, it is necessary to restore and manage degraded fragments. Climbers become extremely abundant in degraded tropical forest fragments, creating a significant demand for ecological restoration. In these cases, the main restoration strategy has been climbing plants cutting, but it is still necessary to understand the outcomes of cutting in combination with the planting of native tree seedlings (cutting + planting), especially at the edges of fragments, which are subject to greater disturbances than the forest interior. We tested whether cutting + planting is the best strategy to restore a degraded edge of a Semideciduous Seasonal Forest fragment in southeastern Brazil. To do this, we used mixed linear models to evaluate the effect of cutting + planting, cutting, and no management (control) on the density and basal area of climbers, the density and basal area of trees, the percentage of dead trees, and the density, species richness, and diversity of seedlings 8 years after the start of the experiment. Cutting + planting resulted in the greatest decrease in climbing plants density and basal area, and the greatest increase in tree density and seedling diversity. Although cutting + planting reduced the percentage of dead trees and increased seedling richness, these variables were more affected by cutting alone. Management had no effect on the basal area of trees and the density of seedlings. This study provides evidence that cutting climbers combined with planting native tree seedlings is the best strategy to restore degraded edges of tropical seasonal forests, as it reverses the trajectory of increasing dead trees and decreasing tree density and diversity resulting from the excessive abundance of climbers.
Desenvolvimento e construção de plataformas analíticas portáteis para detecção de RNA viral visando o diagnóstico de doenças infecciosas
(Universidade Federal de São Carlos, 2024-08-27)
Santos, Daniel Júnior Almeida dos
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Faria, Ronaldo Censi
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https://lattes.cnpq.br/8659496864305621
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https://orcid.org/0000-0003-1094-9597
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https://lattes.cnpq.br/8161817151331695
Viral respiratory infections represent a major threat to the health of the population around the world. In many cases, COVID-19 presents symptoms that can be confused with Influenza, a disease caused by the Influenza A virus. A simple, rapid, and selective assay, capable of identifying the etiological agent and differentiating the diseases, is essential to provide the correct management clinician to the patient. Here, we describe the development of a genomic assay for the selective capture of SARS-CoV-2 and Influenza A virus RNA in saliva samples using two portable analysis systems, consisting of a platform for electrochemical detection (PDE) and a platform with digital image detection (PID). The proposed methods showed excellent performance in the detection and quantification of viral RNA, with PDE presenting a limit of detection (LoD) and limit of quantification (LoQ) of 5.0 fmol L-1 and 8.6 fmol L-1 for SARS-CoV-2 and 1.0 fmol L-1 and 108.9 fmol L-1 for Influenza, respectively. PID was applied to detect the Influenza A virus and presented LoD and LoQ for 0.093 pmol L-1 and 0.310 pmol L-1, respectively. Genomagnetic assays were used to evaluate the presence of viruses in 36 saliva samples from volunteers and the results were in agreement with those obtained by reverse transcription polymerase chain reaction (RT-PCR), demonstrating the viability of the proposed methods for diagnosis. of COVID-19 and Influenza with point-of-care capability.
O aporte da neurociência na concepção de desenvolvimento humano da fundação Maria Cecília Souto Vidigal: uma análise crítica
(Universidade Federal de São Carlos, 2024-08-27)
Oliveira, Vinícius Bertazini de
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Magalhães, Giselle Modé
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https://lattes.cnpq.br/2726281356078379
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https://orcid.org/0000-0003-4045-7040
Given the prominent presence of the Maria Cecilia Souto Vidigal Foundation (FMCSV) in the political and educational field of São Paulo, it is essential to understand its origins, movements, proposals for education and the theoretical bias that underpins its projects. Thus, after a scientific initiation research in which we understood that the conception of human development of this foundation is based on the assumptions of neuroscience, the objective of this final course work was to understand what the so-called neurosciences are and what they are within the area of education. Based on a documentary analysis and under the assumptions of Historical-Cultural Psychology, based on Historical-Dialectical Materialism, it was found that this is a very broad area of knowledge that has been increasingly branching out within the human sciences. We understand the need for neuroscientific studies, but we emphasize the importance of not understanding them dislocated from the social reality that produces them so as not to run the risk of falling into organicist explanations for human development and learning. We also understand that the FMCSV aims to train human beings useful to the capitalist process, which requires the observation that the neuroscientific arguments present in the analyzed documents corroborate the international neoliberal and market-oriented agenda. The research proves that there is a movement in the educational field, promoted by the private sector, to maintain the neoliberal nature of Brazilian society.
Saúde mental de jovens adultos: presença da arte e do lazer no cotidiano e na Terapia Ocupacional
(Universidade Federal de São Carlos, 2024-08-27)
Carvalho, Luana Mara Nunes de
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Fornereto, Alana de Paiva Nogueira
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https://lattes.cnpq.br/0361502737203825
The use of art as a therapeutic tool in Psychosocial Care Centers (CAPS) is widely applied, but how do the users themselves perceive this practice in their daily lives? This raises the need to investigate the presence of art in the daily lives of young people who utilize mental health services and to understand how this artistic interaction influences their treatment processes. Although the scientific literature recognizes the relevance of art in this context, it still lacks deeper analyses from the users' perspectives. The motivation to explore this topic lies in the search for a broader understanding of how art integrates into these young people's lives, their access to cultural and leisure activities, and the role they play in society. Objective: To analyze the impact of art on the mental health of young people served by CAPS, aiming to understand how it contributes to their well-being, its presence in their daily lives, and the participants' perceptions of access to and the significance of art in their lives. Methodology: The present study employed the Photovoice methodology, a participatory and qualitative method that allows participants to reflect on their challenges, visually document these aspects, and share the meanings attributed to the images. This approach promotes a deeper understanding of the issues addressed and facilitates the development of intervention strategies and engagement with policymakers.
Formação docente e o ensino de ciências: uma reflexão sobre os anos iniciais
(Universidade Federal de São Carlos, 2024-08-27)
Costa, Jessica Yule da
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Silva, Fernanda Keila Marinho da
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https://lattes.cnpq.br/6390725197649567
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https://lattes.cnpq.br/2001871263919209
The teaching of Science in the early years of basic education is fundamental for the construction of scientific knowledge and for the formation of citizens capable of making informed choices, recognizing the broad connections between science, technology, society, and the environment. The introduction of this knowledge helps build a solid foundation for future studies. However, for this to happen, it is essential that teachers, especially those with a degree in pedagogy, receive adequate training that enables them to teach scientific topics confidently. The presented research aims to analyze and discuss teacher training for Science education at this stage of schooling, based on educators' perceptions. This is a qualitative study whose target audience consisted of teachers from primary schools in the public education system of the metropolitan region of Sorocaba. The study involved 14 teachers from state and municipal schools, who answered a questionnaire about their perspectives on Science teaching, their training, and their classroom practice. The data collected were analyzed using content analysis, contributing to a reflection on the initial and ongoing training of pedagogy graduates for teaching Science. The results indicate that although teachers consider Science education essential, they emphasize the need for more robust training, both initial and continuous, that enables the construction of solid knowledge for effective educational practice, addressing the various areas of scientific knowledge.
Bases para uma Educação Menstrual Popular e LGBTQIAPN+
(Universidade Federal de São Carlos, 2024-08-27)
Chacon, Za Saggioro
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Teixeira, Iraí Maria de Campos
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https://lattes.cnpq.br/8274452304759860
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https://lattes.cnpq.br/7840481666604266
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https://orcid.org/0009-0005-1237-1807
This research arises in response to the lack of pedagogical references about a menstrual approach that includes the diversity of bodies that bleed, beyond the existing social boundaries of the term “people that menstruate”. It can be described also as a manifest from a nonbinary author searching for non cis-heterocentric answers for his menstrual experience. There is a scientific theoretical apparatus that describes the body that bleeds, anchored on discourses by the church, medicine, psychiatry and psychoanalysis, together with conceptions of gender that are based on the dictatorship of sexual difference. Both cis women, the universal subject, and trans people, have a history of definitions, narrated by these same institutions, from a pathological bias. The difference is that only the first is related, in an essentialistic and stigmatized way, to the experience of bleeding. The goal, given this scenario, is to propose menstrual practices and the search of educational processes that could contribute to a more popular and inclusive menstrual approach from the perspective of the diversity of bodies that bleed. As it is a study intrinsically linked to the principles of Educação Popular em Saúde (EPS), data collection was adapted to the conext demands and included a moment of participatory investigation and an autoethnographic narrative about my gender transition to better represent the exchanges that constructed the research. As a result of this process, foundations were determined for any space that wishes to discuss menstruation in a popular and LGBTQIAPN+ centric approach, paving the way for the construction of practices committed to a trans-referenced and post-heterocolonialist epistemology, as well as the design of a game that encourages menstrual debates.
Estudo ultrassonográfico do tendão de Aquiles de bailarinos assintomáticos: explorando as relações entre estrutura e medidas clínicas
(Universidade Federal de São Carlos, 2024-08-27)
Tessarin, Bruna Mariana
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Nunes, Guilherme Silva
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https://lattes.cnpq.br/0722121177593722
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https://orcid.org/0000-0001-9412-3236
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Serrão, Fábio Viadanna
The central theme of this thesis is the study of structural changes in the Achilles tendon in classical ballet dancers. When a tendon is subjected to mechanical loads, it can respond positively (adaptation) or negatively, leading to tendon pathologies. These pathologies are structural changes observed via ultrasonography, characterized by tendon thickening and the presence of focal areas of low echogenicity, indicating collagen fibre disorganization. Tendon pathologies are found in individuals with tendinopathy and asymptomatic individuals. In the latter case, these individuals have a sevenfold increased risk of developing tendon pain. Classical ballet dancers belong to this group, exhibiting high frequencies of tendon pathologies. Modifiable clinical factors, such as plantar flexor strength, dorsiflexion range of motion, and subtalar pronation, are related to the occurrence of Achilles tendinopathy. However, the relationship between these measures and the presence of tendon pathologies in asymptomatic individuals is unclear. Thus, early identification of these pathologies, before symptom development, may offer an additional prevention opportunity. It is also known that the practice of dance places high loads on the Achilles tendon, but the long-term effect of this overload on the development of tendon symptoms is not well understood. Besides Achilles tendon impairments, the ankle joint is the region with the highest incidence of injury in dancers. Therefore, other structures in this region may be overloaded, resulting in posterior ankle pain, a common clinical presentation among various ankle conditions. Correct identification of the pain source is essential for effective therapeutic approaches and good prognoses. Based on the above, this thesis aimed to address some of the gaps presented. Study 1 was a cross-sectional study aimed at investigating the predictive value of clinical measures commonly associated with Achilles tendinopathy in identifying tendon pathologies in asymptomatic dancers. Study 2, using a longitudinal design, explored the structural response of the Achilles tendon, using Ultrasound Tissue Characterization (UTC), during the rehearsal and performance season of the repertoire ballet "Swan Lake." We also investigated clinical outcomes after 4 months as symptoms in the posterior ankle region through a comprehensive and differential clinical evaluation. The results from study 1 highlighted the importance of hip strength in Achilles tendon structure and indicated that interactions between hip torque and ankle dorsiflexion were associated with the presence of tendon pathology. In study 2, findings showed that the rehearsal and performance period did not adversely affect the Achilles tendon structure, and in the long term, few dancers developed clinical signs of tendinopathy when using the assessment tool presented in the study. This thesis provides new insights that can be implemented in clinical practice and incorporated into research methodologies.
Modelos para análise de textos: um comparativo do número de tópicos
(Universidade Federal de São Carlos, 2024-08-27)
Coelho Filho, Edvaldo Capobiango
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Zuanetti, Daiane Aparecida
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https://lattes.cnpq.br/8352484284929824
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https://lattes.cnpq.br/8395942173646672
Text modeling has gained significant visibility and popularity in recent years due to the large and ever-increasing amount of information present in daily life, consumed in various ways. For the efficiency and applicability of these models, the prior step of data preprocessing is of utmost importance, as it helps in the organization and treatment of texts. One branch within text analysis is topic modeling, whose methodologies aim to understand the topic structure that forms a document, segmenting multiple documents by their dominant topics (subjects) and thus simplifying the exploration of large volumes of textual data with the resulting dimensionality reduction. One of the pioneering methods in this context is the Mixture Model (MM), which assumes that each document will be composed of words from a single topic. Given this limitation, the technique of Latent Dirichlet Allocation (LDA) has gained considerable visibility due to its greater flexibility, as it allows each document to exhibit multiple topics. In both methodologies, model inference is generally given via a Bayesian approach. However, one of the characteristics of MM and LDA is the requirement that the user define the number of topics in the model from the outset. Therefore, the use of performance metrics becomes necessary after the application of the method, aiming to help in the definition and estimation of the best number of topics to be chosen. In this work, therefore, in addition to contrasting text analysis methodologies, we compare the metrics that measure the quality of the models and are used for choosing the number of topics. To do this, we apply the models and selection metrics to two sets of real data.
Flumioxazina isolada e em associações no controle de plantas daninhas e sua dinâmica em palha, textura de solo e simulação de lâminas d’água
(Universidade Federal de São Carlos, 2024-08-27)
Carvalho, Diego Vinícius de
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Monquero, Patricia Andrea
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https://lattes.cnpq.br/2766526793830455
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https://orcid.org/0000-0002-9123-1861
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https://lattes.cnpq.br/9531268232643008
Mechanized sugarcane harvesting can influence the weed population and modify the chemical and biological characteristics of the soil. The residual straw on the surface may hinder the penetration of pre-emergent herbicides, affecting control efficacy. In this scenario, the use of pre-emergent herbicides, combined with different molecules, becomes essential to optimize weed management. The dynamics of herbicide action are influenced by the amount of straw, soil texture, and water sheets (intervals before the first rain), factors that affect the transposition and persistence of the product in the soil. The objectives of the study were: i) To identify the interactions and effects of herbicides applied in combination with flumioxazin for controlling the main weeds present in sugarcane crops; ii) To analyze the persistence of flumioxazin in different soil textures; iii) To evaluate the influence of the amount of sugarcane straw and the intervals before the first rain on the efficacy and persistence of the product. The study was divided into two stages, with both experiments conducted in a greenhouse in a completely randomized design with four replications. In the first stage, six experiments were conducted (one for each weed species), using the following weeds: Rottboellia cochinchinensis (Loureiro) W.D. Clayton, Urochloa decumbens (Stapf) R.D. Webster, Digitaria horizontalis (Willdenow), Merremia aegyptia (Linnaeus) Urban, Merremia cissoides (Lamarck) A.R. Simões & Staples, and Ipomoea triloba (Linnaeus) var. genuina (Meisner). The experiments were organized in a factorial scheme of 8 x 5, with factor A consisting of 8 herbicide treatments (flumioxazin alone and in combination with ametryn, diclosulam, imazapic, isoxaflutole, metribuzin, metsulfuron-methyl, and S-metolachlor) and factor B consisting of 5 intervals between herbicide application and weed seeding (0, 10, 30, 40, and 60 days). In the second stage, two experiments were set up, one in medium-textured soil and another in clayey soil, using I. triloba as the weed species. The experiments were organized in a 9 x 2 factorial scheme, with factor A consisting of 9 treatments simulating the intervals between herbicide application and weed seeding, with and without simulated rainfall (0, 15, 30, 40, and 60 days, 15 days without rain, rain simulation followed by 15 more days without rain, repeating the same intervals for 30, 40, and 60 days). Factor B consisted of two treatments, representing the amount of sugarcane straw on the soil surface (0 and 10 t ha-1). Additionally, untreated controls were included, with and without straw. In both stages, the variables evaluated were weed control (%) and reduction of dry shoot biomass of the species. The combination of flumioxazin with other herbicides provided efficient control (>90%) of the evaluated species up to 10 days after application (DAA). The combination of flumioxazin + metribuzin maintained satisfactory control up to 60 DAA for I. triloba, M. aegyptia, M. cissoides, D. horizontalis, and R. cochinchinensis, and up to 40 DAA for U. decumbens. All treatments reduced the dry shoot biomass of R. cochinchinensis by more than 90%. In medium-textured soils, flumioxazin had residual activity of up to 60 days for controlling I. triloba without straw, regardless of precipitation. With 10 t ha-1 of straw, the residual activity varied between 55 and 60 days, with or without rain. In clayey soils without straw, residual activity was less than 40 days without rain and 55 days with precipitation. In the presence of 10 t ha-1 of straw, control was maintained for up to 60 days without rain and 75 days with precipitation. The combination of flumioxazin with other herbicides increases the residual period and improves weed control efficacy. In clayey soils, flumioxazin shows greater variation in response depending on the presence or absence of straw and precipitation.
Data of "Hydride Destabilization in the Ti–Nb–Cr System Through Nb/Ti Ratio Adjustment"
(Universidade Federal de São Carlos, 2024-08-27)
Dias, Gabriela Chimello Mayer
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Silva, Bruno Hessel
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Martins, Alice de Sousa
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Felderhoff, Michael
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Botta, Walter José
Uso de modelos numéricos no projeto do revestimento refratário de calcinadores para a produção de alumina
(Universidade Federal de São Carlos, 2024-08-28)
Pereira, Carolina Ierck
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Angélico, Ricardo Afonso
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https://lattes.cnpq.br/4572583709143785
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https://orcid.org/0000-0002-1621-9221
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Pandolfelli, Victor Carlos
In the Bayer alumina production process, fluidized bed calciners use refractory linings to withstand erosive particles and temperatures above 900 °C. This work aims to enhance the geometric design of these linings by using Finite Element Method (FEM) to simulate their thermomechanical behavior, focusing on thermal analysis, layer interaction via friction coefficient, the impact of geometric parameters on thermal expansion and stresses, and expansion joint sizing. The results indicated that temperature-dependent properties and panel curvature altered the thermal gradient of the lining. However, variables such as the thickness of the working layer had a marginal impact on the temperature of the metal shell, suggesting low sensitivity of the external temperature to panel erosion. The friction coefficient between layers had minimal effect on thermal expansion, with a moderate increase in tensile stresses as the coefficient increased. Panel curvature had a significant impact, with curved panels expanding about 35 % more in the length direction compared to flat panels, affecting expansion joint design. Stresses concentrated at the edges of curved panels, while in flat panels, they were maximum at the center of the hot face. Empirical validation confirmed the effectiveness of the curved model and indicated the need to optimize anchor positioning to prevent crack propagation. Panel dimensions affected stresses, which increased with size and decreased with thickness, due to the balance between thermal gradient, moment of inertia, and bending moment. The ideal panel size was between 0.75 m and 1.0 m, balancing installation time and structural integrity. Proper material selection, such as reducing the thermal conductivity of the insulator, proved effective in reducing the likelihood of lining failure. Properly sizing expansion joints is essential to ensure both effective closure and structural stability.
Detecção de Alouatta belzebul por DNA ambiental e DNA derivado de invertebrados no Centro de Endemismo Pernambuco
(Universidade Federal de São Carlos, 2024-08-28)
Olímpio, Leonardo Willian Gonçalves Ferreira
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Freitas, Patrícia Domingues de
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https://lattes.cnpq.br/5647631868534064
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https://orcid.org/0000-0002-0309-2815
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https://lattes.cnpq.br/1760132229054532
The species Alouatta belzebul, known as the red-handed howler monkey, is classified as Vulnerable to extinction and occurs in the Amazon and the Pernambuco Endemism Center (PEC), a highly devastated segment of the Atlantic Forest located north of the São Francisco River mouth. Habitat fragmentation is one of the main threats to the conservation of this primate, affecting its distribution and behavior, such as vocalization and movement. One of the primary objectives of this research was to validate non-invasive methods for detecting the species in forest fragments of the PEC, located in the states of Alagoas, Paraíba, and Rio Grande do Norte, using water samples and the stomach content of flies and mosquitoes, through the employment of environmental DNA (eDNA) and invertebrate-derived DNA (iDNA) approaches, respectively. Additionally, a species distribution modeling (SDM) analysis was employed to predict potential occurrence areas of the species, using relevant environmental variables, such as precipitation, temperature, and land cover. The combined use of these methodologies proved to be an effective alternative for identifying the species and predicting its occurrence areas, contributing to the effective monitoring and conservation of the species. The results showed that iDNA enabled the detection of A. belzebul in the study area, revealing new areas of occurrence in Alagoas and Pernambuco. Modeling analyses indicated that areas with higher canopy height and tree cover are essential for the conservation of the species. The relationship between the species' presence and environmental variables highlights the importance of habitat integrity for the survival of A. belzebul. These findings can help identify areas most suitable for the creation of ecological corridors and critical or priority areas for the conservation of the species, supporting public policies aimed at the conservation of the species in the PEC. Thus, the results of this study not only add relevant information about the current and potential distribution of A. belzebul in the PEC but also prove useful for guiding management and monitoring actions for the species. Additionally, the combined use of alternative methods for species detection, such as eDNA and iDNA, with species distribution modeling analyses employed in this study constitutes a relevant model that can be applied to other threatened species in fragmented regions similar to the one studied. This work, therefore, advances not only the knowledge about the distribution and ecology of A. belzebul but also provides practical tools aimed at the monitoring and conservation of biodiversity.
Professoras de creche e suas identidades: trajetórias narradas com a linguagem matemática em um grupo de estudos
(Universidade Federal de São Carlos, 2024-08-28)
Sala, Elaine Cristina Florencio
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Ciríaco, Klinger Teodoro
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https://lattes.cnpq.br/2947929641568853
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https://lattes.cnpq.br/4916663816922975
This master's thesis, linked to the Professional Postgraduate Program in Education (PPGPE) at the Federal University of São Carlos (UFSCar), describes results and directions of an investigation that aimed to analyze the professional identity of Early Childhood Education teachers and the constitution of their practices, in relation to Mathematics, with babies and very young children, when participating in a study group. The research, of a qualitative nature, is based on the field of teaching narratives with the method of the German sociologist Fritz Schütze, which places as a base assumption the organization of data produced from the following steps: 1. Formal analysis of the text; 2. Structural description of the content; 3. Analytical abstraction; 4. Analysis of knowledge; 5. Contrastive comparison; and 6. Construction of a theoretical model. The theme highlights the work with mathematical language from zero to three years old by highlighting the construction of identity and the trajectories narrated by teachers, in a movement of continued training, in Early Childhood Education when they are part of the Study and Research Group "Other Views on Mathematics" (GEOOM/UFSCar). A possible contribution, in view of the conclusion, was the possibility of knowing, in more detail, who the daycare teachers are who participate in GEOOM/UFSCar, revealing their life paths, training, tensions and teaching when they reflected on the real pedagogical experience, given the few studies with mathematical language in the space-time of daycare centers.
Desenvolvimento de framework para gerenciamento de ferramentas em fornecedores terceiros: uma pesquisa-ação em uma empresa de linha branca
(Universidade Federal de São Carlos, 2024-08-28)
Favatto Filho, Antonio Silvio
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Lizarelli, Fabiane Letícia
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https://lattes.cnpq.br/4525431419326559
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https://lattes.cnpq.br/8496669633499347
In the context of household appliances studied in this research, the application of preventive maintenance principles in the supply chain is a major challenge due to the difficulty of communication, integration and cooperation between customers and suppliers. This is even more relevant when suppliers not only deliver parts and components, but also have tools from customer companies on loan, where responsibilities for tool maintenance are shared. This study therefore proposes a framework for incorporating preventive maintenance concepts into the maintenance of tools that are outsourced to third-party suppliers. The concepts presented in the framework were incorporated into software that includes a control dashboard to support the management of tool maintenance at third-party suppliers. To achieve this objective, the action research method was applied, consisting of three cycles. The first cycle was a development stage for the framework and software premises, the second cycle consisted of implementing the process and software guidelines at a first supplier in the home appliance chain, and the third cycle was responsible for expanding the process to a second supplier. As a result of the study, a structured framework is presented which is the basis for the software and dashboard that support the management of the proposed new model for preventive maintenance. The framework indicates a path for implementing and managing preventive maintenance at suppliers based on theory. In addition, the action research showed that the proposed framework is capable of generating greater integration and cooperation between the client company and its suppliers, increasing the companies' performance levels in the supply chain. The implementation of the framework through software and a dashboard enabled the implementation of preventive maintenance, which resulted in better quality levels in the suppliers' parts and fewer line stoppages. The limitations of the work are related to the impossibility of generalizing the results found through action research and also to the lack of quantitative analysis of the results obtained.
Turismo espiritual e regenerativo na ecovila Aldeia Outro Mundo: uma análise do Mundo Sol Festival
(Universidade Federal de São Carlos, 2024-08-28)
Couto, Luciana Reis
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Ferragi, Cesar Alves
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https://lattes.cnpq.br/8059661338196579
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https://orcid.org/0000-0001-8066-500X
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https://lattes.cnpq.br/2764393401687495
Situé à Lagoinha-SP, Aldeia Outro Mundo est un écovillage dont la principale source des revenus sont des festivals et des cours. Axé sur l'éducation, l'art et l'écologie, l'écovillage cherche à offrir des expériences d'introspection et de connexion avec l'environnement qui correspondent aux principes du tourisme spirituel et régénératif. Le présent le travail adopte une méthodologie qualitative, combinant étude de cas et recherche bibliographie sur les écovillages, la culture de la paix, le tourisme spirituel et régénérateur. Aldeia Outro Mundo est analysée en mettant l'accent sur les éditions 2022 et 2023 du Monde Sol Festival, un événement qui a pour thème central la culture de la paix. Explorez le interrelations entre les concepts abordés dans le fondement théorique et la forme comment ces principes peuvent contribuer à créer des expériences significatives. Il examine également comment l'espace et la programmation du festival favorisent création d'expériences à impact spirituel, susceptibles de favoriser des changements effets personnels sur les participants. Sur la base du cas présenté, il est prévu que le les travaux contribuent à démontrer le potentiel des écovillages en tant qu’espaces propice à la mise en œuvre de pratiques touristiques durables et transformatrices.
Características semânticas de mentiras no Português Brasileiro: uma análise gradual
(Universidade Federal de São Carlos, 2024-08-28)
Colosso, Carolina Peternela
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Basso, Renato Miguel
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https://lattes.cnpq.br/6984826176670527
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https://orcid.org/0000-0003-2580-0365
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https://lattes.cnpq.br/6468140086178773
The aim of this research is to analyze the semantic components of the concept of lying in contemporary Brazilian Portuguese (BP), and to defend a definition of this concept based on the idea of prototypes. To this end, we applied the questionnaire on the semantic features that make up lies proposed by Coleman & Kay (1981) to speakers of BP. The anonymous response to this questionnaire, whose subjects are adult native speakers of BP, will lead to a characterization of the prototype of lying in BP. Once we have this characterization, we compare the data obtained by applying this questionnaire to English speakers, looking for intercultural differences in lying, as well as analysing the implications of the results obtained for BP with philosophical descriptions of lying, which, in general, do not take empirical data for their discussion. Thus, this research contributes not only to the description of the concept of lying in BP, but also to the beginning of a translinguistic evaluation of this concept and its implications in the philosophical debate. Finally, we would like to highlight the originality of this research, given that there is practically no work on the subject in BP linguistics.
Efeitos da terapia de fotobiomodulação de corpo inteiro avaliado por meio da dispneia, fadiga muscular de membros inferiores e desempenho funcional nos testes de sentar e levantar de 1 minuto e teste de marcha estacionária de 2 minutos em indivíduos com dpoc.
(Universidade Federal de São Carlos, 2024-08-28)
Michelato, Thais Helena de Paula
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Ferraresi, Cleber
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https://lattes.cnpq.br/9593811257950561
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https://orcid.org/0000-0002-1361-8390
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Jamami, Maurício
Chronic Obstructive Pulmonary Disease (COPD) is a common disease characterized by respiratory symptoms and decreased airflow due to inflammation of the airways and/or alveolar airways, usually caused by inhalation of harmful particles or gases, mainly due to the effect of tobacco. Peripheral muscle weakness affects about 20% of patients diagnosed with mild and moderate COPD and 40% in severe disease. Reduced muscle strength, decreased aerobic capacity, dependence on glycolytic metabolism and large amounts of lactate during exercise may be responsible for early muscle fatigue in these patients. An alternative that emerged to improve muscle performance and recovery was photobiomodulation therapy (PBMT). PBMT can stimulate mitochondrial activity, energy synthesis (adenosine triphosphate - ATP), stimulate muscle glycogen synthesis, and intensify the activity of antioxidant enzymes. Therefore, PBMT can benefit COPD patients in their performance in functional activities performed in their daily lives. Objectives: To determine whether the application of whole-body PBMT in a single session in patients with moderate to severe COPD promotes an improvement in dyspnea, lower limb fatigue, and functional performance as assessed by the one-minute sit-to-stand test (1SST) and the two-minute stationary gait test (SMT2'). Methods: This was a randomized, crossover and single-blind, sham-controlled clinical trial conducted in the city of São Carlos, São Paulo, Brazil, at the Laboratory of Spirometry and Respiratory Physiotherapy of UFSCar. We evaluated 22 patients with moderate to severe COPD, who underwent an assessment of functional performance and perception of dyspnea and fatigue of the lower limbs by means of 1SST and SMT2', before and after a single application of whole-body PBMT and sham. Results: After the application of whole-body PBMT, the patients' perception of lower limb fatigue decreased significantly compared to the sham application (p≤0.01) with medians 1 (0.5-0.0) and 2 (1.64 -2) respectively, in 1SST. Dyspnea and functional performance did not show significant changes (p>0.01) between whole-body PBMT and sham in 1SST. Dyspnea at SMT2’ decreased significantly (p≤0.01) compared to sham with medians 1 (0.5-1.75) and 2 (1.25-3), as well as muscle fatigue at lower limbs, 0 (0-1) and 3 (1.25-3), respectively. There was an improvement in the functional performance of SMT2’ comparing pre- and post- PBMT and sham (p≤0.01), but there was no significant change between whole-body PBMT and sham. Conclusion: Whole-body PBMT significantly reduced muscle fatigue in the lower limbs in 1SST and SMT2’ and significantly reduced dyspnea in the SMT2’. It did not significantly increase functional performance in 1SST and SMT2’, in a single session of whole-body PBMT of participants with moderate to severe COPD.
Avaliação de modelos de dispersão atmosférica no contexto de avaliação de impacto do ciclo de vida no Brasil
(Universidade Federal de São Carlos, 2024-08-28)
Albino, Ana Carolina Godoy Albino
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Tadano, Yara de Souza
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https://lattes.cnpq.br/1411041491592598
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https://orcid.org/0000-0002-3975-3419
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Silva, Diogo Aparecido Lopes
Air pollution is one of the main environmental and public health challenges, with Particulate Matter (PM2.5) being one of the most critical pollutants due to its adverse impacts. This study investigated the modeling of PM2.5 concentrations in Brazil, considering regional specificities, aiming to improve Life Cycle Impact Assessment (LCIA). Different pollutant dispersion models were mapped, and the InMAP model was selected to simulate PM2.5 concentrations. The evaluated inventories covered five key sectors: agriculture, industry, transportation, biomass burning, and biogenic emissions. For the agricultural sector, the EDGAR inventory was used; in the industrial sector, the EDGAR, BRAIN, and Rey (2023) inventories were considered; and for the transportation sector, the EDGAR and BRAVES inventories were used. Biomass burning was represented by the FINN inventory, while biogenic emissions were represented by the MEGAN inventory. From these sources, six datasets (C_01 to C_06) were formulated and applied in the InMAP model, subsequently validated using the Root Mean Square Error (RMSE) against monitored concentration data from 31 stations in the state of São Paulo. The analysis revealed a significant lack of specific data in key sectors, such as agribusiness, highlighting the urgent need to develop more detailed emission inventories in Brazil. The BRAVES inventory stood out for its superior representativeness, being used in the three best-performing combinations of inventories, suggesting its suitability for the Brazilian context. The southern and southeastern regions of Brazil, especially urban areas such as the São Paulo metropolitan area, showed the highest PM2.5 concentrations, reflecting the strong influence of transportation and industrial emissions. Among the six evaluated inventory sets, C_03 was identified as the most robust. This set combined data from EDGAR for agriculture and industry, BRAVES for transportation, FINN for biomass burning, and MEGAN for biogenic emissions, presenting the lowest RMSE and the greatest consistency among the inventories used. The study emphasized the importance of uniformity in data collection to increase the accuracy of simulations, indicating that the adoption of data collection standards is essential to improving the modeling of emission inventories in Brazil.
Desenvolvimento profissional de coordenadores pedagógicos em serviço e suas trajetórias formativas
(Universidade Federal de São Carlos, 2024-08-28)
Rocha, Ana Lucia
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Gama, Renata Prenstteter
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https://lattes.cnpq.br/4153572041829838
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https://orcid.org/0000-0001-6338-4345
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https://lattes.cnpq.br/0296693999132019
Continuous in-service training has proven to be an essential practice for the professional development of pedagogical coordinators, as it enables the constant updating of knowledge and skills, as well as the development of new competencies. In this context, the present research aims to understand how pedagogical coordinators perceive their continuous in-service training and its contribution to the development of their daily activities. To this end, a questionnaire was applied to pedagogical coordinators from the SESI-SP network to obtain information about their training experiences, and a discussion group was held to deepen the data collected. The questionnaire and discussion group data were categorized to highlight the most relevant results, describing in detail how they were trained and how this influenced their professional practice. Given our objective, we prioritized the analysis of the sections on performance, training, and profile. In the profile section, the data revealed that the majority of the coordinators have postgraduate degrees and chose courses directly related to educational management. Additionally, the analysis of the responses in the training section showed that most coordinators emphasize the importance of continuous training for pedagogical practice, stating that these trainings provide them with tools to face daily challenges. In the discussion group, the difficulty of reconciling work routines with the need to engage in continuous training was emphasized, highlighting the importance of training that adapts to their time availability and the specific needs of their professional practice. In the performance section, the coordinators pointed out that time management and setting priorities are crucial for the effectiveness in performing their duties. The implementation of organizational strategies and the delegation of tasks were considered essential to improving work efficiency and quality. The most impactful trainings were those that directly aligned with the needs of their daily practice, allowing for the immediate application of acquired knowledge. From the conclusions of this research, it is possible to perceive that, despite challenges such as the adequacy of training to practical needs and time limitations, continuous training is valued for promoting knowledge updating, pedagogical innovation, and strengthening professional identity. As the pedagogical coordinators were profiled, the results point to the effectiveness of adaptive and collaborative strategies, emphasizing the importance of a learning environment that values the sharing of experiences and critical reflection.