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Avaliação do ciclo de vida de um laminado sintético espalmado de PVC para produção de palmilhas
(Universidade Federal de São Carlos, 2024-04-08)
Dutra, Felipe Juliano
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Paiva, Jane Maria Faulstich de
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https://lattes.cnpq.br/7926832511513537
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Moris, Virgínia Aparecida da Silva
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https://lattes.cnpq.br/1101036108950133
Brazil is currently the fifth largest footwear producer in the world, accounting for 3.9% of global production. In Brazil, there is a tendency to increase the use of synthetic laminates in footwear, mainly due to the variety of colors, prints, thicknesses, and applications with emphasis on PU (polyurethane) and PVC (polyvinyl chloride) laminates. Although PVC is an important alternative in the manufacture of footwear, its use is still questioned from an environmental point of view, mainly due to the emissions throughout the production process, such as dioxins. Therefore, the objective of this work is to present the main environmental hotspots of a synthetic PVC laminate used to make insoles, by carrying out an LCA from cradle to gate, based on a case study. Four impact categories were assessed, based on literature: abiotic depletion, eutrophication, human toxicity, and global warming. The results indicate that the main environmental hotspots occur upstream of the laminate production process for three of the four categories analyzed: production of plasticizer (non-phthalic) for the abiotic depletion and eutrophication categories, and production of emulsion PVC resin (E) for the human toxicity category. The production process of the assessed laminate directly contributes to the potential impacts observed for the global warming category. The possible actions to reduce potential environmental impacts assessed in this study are: the use of vegetable plasticizers and the use of energy from renewable sources, among which, the replacement of plasticizer (non-phthalic) by soybean oil proved to be the most advantageous scenario in the environmental point of view.
Proposta de modelos para estimativa do fator de redução da resistência à compressão de pilares castelados carregados axialmente
(Universidade Federal de São Carlos, 2024-04-08)
Gomes, Arthur Filipe Freire
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Christoforo, André Luis
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https://lattes.cnpq.br/7623383075429186
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https://orcid.org/0000-0002-4066-080X
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https://lattes.cnpq.br/7112458774359627
Currently, castellated columns have been increasingly used in buildings due to their flexibility, easy compatibility and potential savings given their lower steel consumption. However, there is a lack of research and design methods for these elements. The influence of the openings on the load capacity of castellated columns has not yet been clearly defined in the literature. Studies on castellated beams can be easily found, however, studies on such profiles acting as pillars are scarce. In this context, numerical models based on finite elements developed with the aid of ABAQUS® software are developed. This parametric study with 1328 numerical models aims to evaluate the influence of the three main types of castellated openings (Peiner, Litzka and Anglo-Saxon), three expansion factors (k - 1.33, 1.50 and 1.67) and eight slenderness indices (λ - 25, 50, 75, 100, 125, 150, 175 and 200) in the behavior of axially loaded columns. In order to validate the numerical model, the load capacity obtained through a nonlinear analysis was compared with the valuesfound in three experimental studies and in ABNT NBR 8800 (2008 After validation, the resistant capacity of each model was determined through a nonlinear physical and geometric analysis around the largest and least inertia axis. The loads obtained by the castellated and full-web column were compared. The resistance reduction factors associated with global buckling (χ) for castellated columns were also compared to the values proposed by ABNT NBR 8800 (2008). Castellated columns had a lower resistance capacity than the full-web elements, especially the short columns. Castellated columns with larger openings showed a greater reduction in resistance capacity. Furthermore, the curve proposed by ABNT NBR 8800 (2008) may overestimate the resistant capacity of castellated columns for reduced slenderness indices (λ0) lower than 0.75. Finally, equations based on regression models were developed (with R2 values above 94.00) to estimate the resistance reduction factor associated with global buckling (χ) of the columns evaluated within the scope of this study.
“Òrìsà Ńjẹ, Ilé Asé Ńjẹ- Os Orixás Comem, O Terreiro Come”: uma etnografia da sacralização de animais em um Terreiro de Umbanda Traçada
(Universidade Federal de São Carlos, 2024-04-08)
Silva, Julia Aparecida Rodrigues da
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Vander Velden, Felipe Ferreira
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https://lattes.cnpq.br/7289231173735671
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https://lattes.cnpq.br/9718783230484134
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https://orcid.org/0000-0003-0249-8474
In the rituals of African religions, the sacralization of animals is an essential element in the connection between humans and deities: by immolating specific animals, the aim is to offer (feed) the deity and then distribute the animal's meat to everyone in the terreiro community and other followers present. Through sacralization (sacrifice), the animal's axé will serve as food for the Orixá (and for humans) because it acts and operates certain energy flows. The aim of this ethnography is to understand the foundations and purposes that animal life acquires during the ritual of sacralization in Candomblecist cosmology: where the animal is acquired, the care and place of its stay in the terreiro before undergoing immolation, who immolates and which species are immolated, the precautions (preceito) taken by the Afro-religious, the instruments and supplies that are part of the ritual, the songs and prayers chanted and finally, after the sacralized animal, how the Orixá and the terreiro eat. And finally, to analyze the debates surrounding the political arguments, mostly Christian, that have tried and are trying to ban this practice on the grounds that it is animal cruelty, as well as to verify the importance of this ritual in the view of religious practitioners and their communication with the spiritual plane.
Development of bio-inspired electromechanical devices based on PBMA-b-(PSS-r-PS) amphiphilic block copolymer
(Universidade Federal de São Carlos, 2024-04-08)
Saccardo, Matheus Colovati
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Scuracchio, Carlos Henrique
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https://lattes.cnpq.br/0896060959622431
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https://orcid.org/0000-0002-7723-0213
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https://lattes.cnpq.br/3993645750766626
Technological advances in the aerospace, biomedical, and robotics industries stimulate the need for innovative and sustainable devices, such as electromechanical devices (EMDs), which are bio-inspired materials capable of mimicking biological systems in appearance, functionality, and operation. For practical applications, EMDs must combine several properties, such as i) high ionic conductivity, ii) flexibility, iii) mechanical resistance, and iv) chemical, thermal, and structural stability. Such properties can be obtained by engineering amphiphilic copolymers, which can self-assemble into well-defined morphologies with nanometric domains. Thus, it is possible to effectively dissociate ionic conductivity from mechanical properties, adjusting the flexibility, Young's modulus, and ionic conductivity according to the size of the blocks and the number of functional groups. Therefore, in this project, reversible addition-fragmentation chain transfer (RAFT) polymerization was used to synthesize the diblock copolymer Poly(butyl methacrylate)-b-(sulfonated polyneopentyl styrene-r-polystyrene) (PBMA-b-( PNeoSS-r-PS)). Subsequent thermolysis of the PNeoSS segments removes the neopentyl group, resulting in a sulfonated polystyrene-r-polystyrene (PSS-r-PS) backbone, yielding an amphiphilic block copolymer with ionic conductivity, which was used to prepare an EMD. In general, it can be concluded that RAFT polymerization is a robust and versatile technique that allows control of the degree of polymerization, molecular weight, polydispersity, and chemical composition of the copolymer. The copolymer presented a molecular weight of 65 kg.mol-1, with a 50% ratio between flexible and rigid blocks, alongside an 8.8% degree of sulfonation, lamellar morphology, capable for enhancing flexibility and ionic conductivity. Finally, the device was tested and characterized electromechanically using an electromechanical characterization system, showing promise for application as a sensor.
Histórico de expansão urbana e análise dos eventos de inundações no rio Sorocaba - SP
(Universidade Federal de São Carlos, 2024-04-08)
Leite, Amanda Rodrigues
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Arruda, Emerson Martins
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https://lattes.cnpq.br/3883710507177933
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https://lattes.cnpq.br/8055631622023281
Cuando la urbanización se produce sin una planificación adecuada, los ríos son vistos como un problema para la ciudad que se desarrolla en sus orillas. El sellado de suelos, la deforestación ribereña, las construcciones incómodas combinadas con la falta de estructuras adecuadas para el drenaje del agua, son solo algunos de los factores que interfieren con el curso natural de los cuerpos de agua urbanos, aumentando significativamente el riesgo de inundaciones. Esta investigación involucra el análisis de la dinámica ambiental del municipio de Sorocaba, así como el levantamiento de las inundaciones ocurridas en el río del mismo nombre, centrándose en el perímetro urbano del citado curso, vislumbrando así una comprensión de la dinámica ambiental, vinculado a aspectos de uso del suelo en sus márgenes, así como a la forma en que se apropia el relieve del área. Según las observaciones esbozadas, se entiende que son necesarias obras encaminadas a revitalizar los ríos urbanos para la calidad ambiental de los cursos de agua y de la propia cuenca, así como proyectos que valoren una mejor planificación urbana, con el objetivo de llegar a las raíces de los problemas relacionados con crecidas e inundaciones fluviales, siendo un factor conciliador en la relación río-ciudad.
Plataforma de encapsulamento de microrganismos em matriz PVA para uso na agricultura como inoculante microbiano
(Universidade Federal de São Carlos, 2024-04-09)
Lodi, Ludimila Araújo
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Farinas, Cristiane Sanchez
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https://lattes.cnpq.br/9933650905615452
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https://orcid.org/0000-0002-9985-190X
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https://lattes.cnpq.br/8314583698258145
This study aimed to develop novel microbial inoculants for the encapsulation of Bacillus megaterium. Films and microparticles were prepared from polyvinyl alcohol (PVA)-based formulations using casting, emulsion, and spray drying techniques. The materials that best protected the encapsulated bacteria from stresses such as heat, UV light, and agrochemicals were applied in different ways: as a coating on soybean seeds (films), in soils with high salinity (emulsion microparticles), and as a solid inoculant in greenhouse experiments using soybeans with a model plant (spray-dried microparticles). Initially, biodegradable PVA films were developed that were cross-linked with citric acid. At a concentration of 30% (w/v), citric acid reduced the swelling and solubility of the films, increased their resistance to degradation, and influenced the controlled release of the encapsulated bacteria. The films promoted similar germination rates of soybean seeds treated with commercial polymers and outperformed the untreated seeds. This proves their application potential. Microparticles based on PVA/cationic starch were developed using a simple crosslinking/emulsion method, and the effect of the cross-linking agents citric acid (CA), sodium trimetaphosphate (STMP), and bentonite as surface modifiers was investigated. The presence of STMP/bentonite increased the estimated shelf life of this formulation. In high salinity soil tests (200 mM), these microparticles provided a favorable environment for bacterial development, with final cell viability higher than that of the inoculum, even after 7 days of high salinity. Finally, zinc oxide (ZnO) was added to the PVA/cationic starch formulation to produce microparticles by spray drying. The presence of zinc and bacteria in the formulation significantly promoted the production of biomass in the aerial and root zones of soybean plants and enhanced the uptake of phosphorus and zinc when applied as a solid inoculant in greenhouse tests. The results show that the proposed formulations and methods to produce novel microbial inoculants are promising strategies for efficient agricultural applications.
Simulação de configurações de movimentação de um sistema AGV para transporte em posto de pintura especial
(Universidade Federal de São Carlos, 2024-04-09)
Assis, Rafael de
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Lage Júnior, Murís
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https://lattes.cnpq.br/9666500788789379
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https://lattes.cnpq.br/8070604031456208
This dissertation presents a proposed solution for the movement of products in process, simulating the use of AGV vehicles in the special painting process at a manufacturer of drives for the industry. The research objective is to analyze potential productivity gains that AGV can bring to this process, primarily by reducing the lead time, which directly impacts product lead time. Based on the experimentation method that utilizes simulation, this study presents 3 models: the current situation, the implementation of deck lift AGV, and the implementation of tugger AGV. Comparing the models based on performance indicators highlights productivity gains, concluding that the best model is the deck lift AGV, which yields results such as a 99.17% decrease in waiting time and improvements in lead time gain indicators ranging from 33.78% to 92.16%, depending on the type of painting, as well as better space utilization, 84.76% lower compared to the current situation. The characteristic of the deck lift AGV model to transport the product when it is placed in the output buffer of the special painting station has been shown to improve productivity gains, presenting favorable conditions for sector organization and directly influencing management quality and customer satisfaction.
Avaliação de um programa de ensino para cuidadores desenvolverem a linguagem oral das crianças de forma naturalística
(Universidade Federal de São Carlos, 2024-04-09)
Balog, Lívia Gabriela Campos
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Domeniconi, Camila
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https://lattes.cnpq.br/9684535663947328
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https://orcid.org/0000-0003-0486-3543
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https://lattes.cnpq.br/1305969857928709
This thesis presents three studies that supported the planning, implementation and evaluation of an intervention for caregivers to apply naturalistic strategies to expand children's communication repertoire. Firstly, a systematic review of the literature was carried out with the aim of analyzing methods of teaching parents to develop the language of their children with intellectual disabilities, delays or language impairment, within the family routine. The strategies taught to parents most used by studies were described, as follows: a) follow the child's interest, b) be responsive, c) organize the environment, d) expand the child's communication, e) ask questions d) provide breaks . Discuss the different ways of teaching naturalistic language stimulation strategies to parents, including the increasing use of technologies for teaching and monitoring caregivers. Based on the literature review carried out in Study 2, the objective is to develop and evaluate a remote parenting program to stimulate children's language in the family routine, in the context of social isolation. Although the remote teaching model was well evaluated by caregivers and the study achieved its initial objectives, some limitations were highlighted. Considering the limitations of Study 2, Study 3 was designed and aimed to verify the effect of the program, carried out in person, with phases of instruction, modeling and feedback on parents' behaviors. The results of both studies demonstrated the effectiveness of the intervention in increasing the frequency of use of strategies by parents and in some measures of children's language. Suggestions were proposed for conducting future studies and we hope that the results can help in the development of naturalistic disciplines aimed at caregivers, especially children with ASD, Down Syndrome and delays in language development.
Lebesgue solvability of equations associated to elliptic and canceling linear differential operators with measure data
(Universidade Federal de São Carlos, 2024-04-10)
Biliatto, Victor Sandrin
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Moonens, Laurent
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https://orcid.org/0000-0001-6351-2626
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Picon, Tiago Henrique
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https://lattes.cnpq.br/7853908129934448
In this thesis, we present new results on the solvability of the equation A*(x,D) f = µ for f in L^p, with complex measure data µ, associated to an elliptic linear differential operator A(x,D) of order m with variable complex coefficients. Our method is based on (m,p)-energy control of µ giving sufficient conditions for solutions when 1 ≤ p < ∞. A particular study is presented in the global setting of Lebesgue solvability for the equation A*(D) f = µ, where A(D) is a homogeneous differential operator with constant coefficients. We also obtain sufficient conditions in the limiting case p = ∞ using new L^1 (global and local) estimates on measures for elliptic and canceling operators, which are interesting on their own.
The coopetitive effect in supply chains: exploring the relationship between multiple supply chains from the focal agent perspective
(Universidade Federal de São Carlos, 2024-04-10)
Brandão, Maicom Sergio
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Godinho Filho, Moacir
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https://lattes.cnpq.br/6136685270563354
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https://lattes.cnpq.br/6709066592331133
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https://orcid.org/0000-0002-7798-1922
This thesis explores the possibility of a form of interaction between supply chains known as coopetition, which combines cooperation and competition. The main objective is to investigate coopetition among multiple supply chains within an organization from the perspective of supply chain relativism and its implications. This study, organized into six articles, unfolds into two primary streams of inquiry: the perspective of multiple supply chains - resulting in the theoretical framework of the research - and coopetition - providing the basic concepts used in the study. Through a first systematic review, the thesis underscores the significance of the idea of flow as a fundamental concept in understanding the relativism of supply chains, with a particular emphasis on the interaction among material, financial, and information flows. Furthermore, it formalizes the perspective of multiple supply chains as an alternative to the conventional characterization of nodes and links, highlighting the multifaceted nature of supply chain phenomena. Within this vein, it presents the perspective of multiple supply chains as part of organizational discourse from sustainability reports. Besides, the thesis establishes a theoretical framework to investigate coopetition among multiple supply chains. Through a second systematic literature review, it is found that, within the inter-organizational context, there exist various forms of coopetition (technology-based, relationship-based, and channel-based) associated with different supply chains. Through a multiple case study, the execution and cooperative interaction among multiple supply chains are observed, and their similarities and differences concerning inter-organizational coopetition are listed. Finally, through a retrospective case study, it observes how changes in organizational structure can foster the emergence of the distinct supply chains of the organization and shift coopetitive dynamics along the coopetition continuum. The coopetitive effect addressed in this thesis corresponds to interaction founded on a cooperative context occurring among multiple supply chains within an organization - delimited, socialized, and managed by a group of actors - where internal resource scarcity may lead to competition among them. The implications of this interaction can affect not only the focal company but also other links in the supply chain positively or negatively. As contributions, this study proposes that variants of the supply chain term be observed as representatives of the evolution of the research field from the main concepts of phenomenon, orientation, and supply chain management. Considering coopetition, expands the scope of analysis levels to include coopetition among multiple supply chains. Furthermore, the thesis contributes to managerial understanding by proposing strategies to effectively navigate coopetitive dynamics. It emphasizes the importance of identifying core and non-core supply chains, managing power asymmetries among them, and recognizing the role of organizational structure in shaping coopetitive interactions. Additionally, it highlights the importance of mediating elements capable of capturing the global and individual value creation of multiple supply chains. It also underscores the need to differentiate coopetition from a mere supply constraint due to its relational characteristic, thus avoiding tensions and conflicts solely relying on trust among actors to be solved.
Modelagem numérica do perfil térmico e do escoamento de material termoplástico por extrusão em um cabeçote customizado para manufatura aditiva
(Universidade Federal de São Carlos, 2024-04-10)
Santos, André Luiz Grando
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Silveira, Zilda de Castro
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https://lattes.cnpq.br/2567496668379673
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https://orcid.org/0000-0002-5040-0403
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Lucas, Alessandra de Almeida
This work presents a procedure for modeling and numerical analysis of the flow of a thermoplastic fluid with pseudoplastic behavior applied to a custom miniature vertical head based on twin-screw extrusion for additive manufacturing. It is a case study conducted using the miniature head of an innovative prototype conceived on a laboratory scale for direct manufacturing using the PP RP141 raw material in powder form. The temperature profiles in the head were estimated, and the techniques adopted were validated with experimental data from a prototype of the extruder head. The pressures and flow details in the channels forming the extrusion nozzle (die) were revealed through a 3D model. The dimensionless parameters characteristic of the types of elements that constitute the screws were also determined by a 3D model. A 1D flow model published by another author was modified and coded to predict the pressures and, consequently, the location of the fully filled sections of the screws. This modified model was validated by comparison with documented cases in the literature. Furthermore, the filled sections were simulated using mesh immersion techniques in a 3D model, and details of the complex flow in these sections were discussed. Finally, a comparison of the pressures predicted by the modified 1D model with those obtained by the 3D model revealed a good approximation between the results of these analyses using the technique proposed in this work, thus establishing a procedural roadmap for exploring the processing limits of the unit, screw compositions, process variables, and materials, as well as aiding decision-making in the design stages of other units and improvements of this innovative variant of additive manufacturing.
Caracterização do óxido formado na superfície da junta M5TM/Zircaloy- 4 soldada por resistência e pressão após testes de corrosão em autoclave a 360°C
(Universidade Federal de São Carlos, 2024-04-10)
Soares, Alexandre Roberto
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Rovere, Carlos Alberto Della
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https://lattes.cnpq.br/8141224513975606
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https://orcid.org/0000-0003-1534-0561
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Silva, Rodrigo da
The nuclear fuel cycle involves uranium mining and chemistry, fuel manufacturing, fuel element operation in reactors, and post-irradiation treatment. The casing tubes are produced with zirconium alloys, as they have a low neutron capture cross-section. Welding processes in nuclear applications are electron beam, laser, resistance, projection and spot welding. The welds undergo destructive and non-destructive tests to characterize the joint, tube bursting tests, metallography, and corrosion. The present work sought to characterize the oxide layer formed on the surface of a joint composed of zirconium M5TM and Zircaloy-4 alloys welded by the Resistance Pressure Welding (RPW) process. Autoclave corrosion tests were carried out to simulate operational conditions, identifying specific oxidation/corrosion mechanisms after analysis. The results obtained show that during the corrosion process, both the surface of the plug and the tube oxidize, forming an oxide layer composed predominantly of the m-ZrO2 phase, adhering and continuing on the surface of both materials. Furthermore, small Zr(Fe,Cr)2 precipitates present in the buffer microstructure oxidize, remaining on the surface of the oxide layer. For the welded bead, the rapid growth of the oxide leads to the formation of a continuous nodule of white oxide, which presents a high fraction of the t-ZrO2 phase. The growth of this white oxide nodule is accompanied by the penetration of the oxide into the bead reinforcement at the plug/weld bead interface region. As the corrosion process progresses, complete oxidation of the Zr(Fe,Cr)2 precipitates occurs, leading to the formation of voluminous oxide nodules composed of a mixture of phases: t-ZrO2, m-ZrO2, Cr2O3 and Fe2O3. Although the oxides observed were obtained under more severe conditions than usual, they proved to be safe in terms of depth and thickness, not drastically affecting the weld bead region even after five corrosion cycles.
Contribuições para modelos gerais de diagnóstico cognitivo
(Universidade Federal de São Carlos, 2024-04-11)
Fernandes, Renato da Silva
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Bazán Guzmán, Jorge Luis
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https://lattes.cnpq.br/8040998023074358
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https://orcid.org/0000-0003-3918-8795
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https://lattes.cnpq.br/2796219868581062
Cognitive Diagnosis Models (CDMs) are discrete latent variable models that aim to determine an individual's pattern of possession of skills or attributes based on their test responses. This class includes the general diagnosis models, whose formulation allows various other CDMs to be obtained as a special case of the former. This work presents contributions to these general models under a Bayesian approach. First, we present Bayesian formulations for two general diagnosis models, the Generalized DINA (G-DINA) model, designed for dichotomous responses; and the General Polytomous Diagnosis Model (GPDM), designed for polytomous responses. These formulations include new sets of constraints on the item parameters to improve the estimation and interpretability of the model parameters. For both models, an estimation method was implemented using the JAGS software, which is available in this thesis. Moreover, for both models, a simulation study was designed to evaluate the parameters recovery accuracy of this Bayesian estimation method and the results were compared with those obtained with the standard classical estimation method. In both studies, the results indicate that the proposed Bayesian estimation method recovers all parameters with accuracy equal to or better than the classical estimation method under the evaluated scenarios. In an example of application, we use the proposed models to examine the responses of 1111 college students to the Beck Depression Inventory (BDI) using a CDM in the modeling process. In the first instance, we compare the results obtained with the DINA model (adopted in the original formulation of this methodology) and the G-DINA model, both applied to the dichotomized data. In the second instance, we compare the results obtained with the G-DINA model, applied to dichotomized data, and the GPDM, applied to original polytomous data. At last, in another example of application, we present a new recommendation system for movies that incorporates a CDM in its formulation. The CDM is used to predict the ratings that a user would give to each item and make recommendations based on these predictions. The proposed method was applied to two movie datasets and its performance compared to other recommendation systems found in the literature, presenting results superior to the competing methods.
Qualidade de vida, saúde e o autocuidado em homens com câncer
(Universidade Federal de São Carlos, 2024-04-11)
Sousa, Alex da Silva
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Reis, Maria de Jesus Dutra dos
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https://lattes.cnpq.br/8868678989340770
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https://orcid.org/0000-0002-5128-2074
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https://lattes.cnpq.br/0647067456190759
Cancer represents the third leading cause of death among men, behind only deaths arising from diseases of the circulatory system and violent external causes. The advancement of medical technologies has provided greater prospects for controlling and curing cancer, which means that patients live longer with the disease, the treatment and the impacts arising from it. Because of this, the issue of health quality of life for men with cancer has become a central issue in the field of oncology. Therefore, the main objective of this manuscript is to analyze the quality of life, global health and self-care in men with cancer. The theoretical approach to the research objective will be carried out mainly from health psychology studies and the behavioral analytical approach. Three different chapters make up this manuscript: the first reports an article that discussed indicators of mortality and illness in males in Brazil. The second chapter is a narrative review of international literature, regarding changes in the quality of life of men undergoing cancer treatment. For the third chapter, field research is proposed, with a cross-sectional design, descriptive and correlational objective, regarding data collection, field research was used and for data analysis, the quantitative approach. The instruments applied were the script for consulting the medical record on sociodemographic characteristics and the clinical history of medical treatment, to assess quality of life the WHOQOL-bref, referring to global health PROMIS level 1 will be used, referring to sexual function the sexual quotient – male version (QS-M) and to describe the sample's health care repertoire, a semi-structured interview guide. In the main results, it was found that the general average quality of life of the sample was low (M= 29.5 and SD= 3), the four domains evaluated by the instrument also achieved low scores, especially in the physical domain, the worst commitment (M=22.9 and SD=9). In PROMIS I, it was observed that five of the thirteen care indicators were detected in 50% or more of the participants, namely: anxiety (86%), anger (80%), depression (71%), thoughts/ repetitive behaviors (69%) and substance use (59%). Concerning the sexual satisfaction indicator, obtained with the QS-M, the general score was low (M= 31.5 SD= 1.8), with a poor to unfavorable performance pattern predominating, in 45% of participants. At a confidence level of 95% and significance of 0.05, the parametric hypothesis tests used showed that the average quality of life is not distributed homogeneously when evaluated by clinically relevant groups. The main selfinjured health problems were: hypertension with 31%, anxiety with 25%, depression with 19%, diabetes with 18%, lung/respiratory problems with 10%, overweight with 8%, heart disease with 5% and other problems of health with 2%. Both risk behavior and protection were found to be in use more frequently among those at risk. The cluster analysis revealed two patient profiles: “highly critical” and “moderately critical”. It is concluded that the overall health of men undergoing cancer treatment requires attention, not only due to the reduction in the quality of life that they may be exposed to, but above all because they have a scarce repertoire of self-care that they frequently present, in addition to exposing themselves to risk factors. to health. Health professionals working in oncology must be aware of these dimensions of the relationship between masculinity and health to provide assistance that is more in line with the needs of these subjects.
Estruturas metalorgânicas como catalisadores para hidrogenação do CO2
(Universidade Federal de São Carlos, 2024-04-11)
Paula, Luana do Nascimento Rocha de
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Gomes, Janaina Fernandes
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https://lattes.cnpq.br/6718634914051168
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https://orcid.org/0000-0002-9542-8944
;
Assaf, José Mansur
The hydrogenation of CO2 to commercially relevant products such as alcohol, coupled with the use of renewable energy, can curb indiscriminate emissions of this gas, and reduce dependence on fossil resources. Due to their excellent performance, copper catalysts have been extensively investigated for CO2 hydrogenation. However, this reaction presents challenges regarding product selectivity, catalyst stability, and the use of non-fossil co-reactants. Thus, MOFs can be used as supports for Cu catalysts and have the potential to address some of these gaps, as they can generate interfaces that protect active sites, preventing deactivation and stabilizing intermediates in the reaction, thereby enhancing the selectivity of desired products. Moreover, using water as a co-reactant in the CO2 hydrogenation reaction allows for the use of a clean hydrogen source. Based on this, this work aims to synthesize Cu/UiO-67 for application in CO2 hydrogenation, using water steam and H2 as co-reactants. The impact of precursors and copper loading, the influence of the metal center, the addition of promoters, and the synthesis method of these materials were evaluated in reactions between CO2 and H2, always aiming for the best catalytic performance concerning ethanol production at atmospheric pressure. In a second stage, reactions between CO2 and water steam were conducted to optimize reaction parameters and identify the influence of oxidized species on alcohol formation. Through XRD, SEM, TEM, FTIR-ATR, TGA, N2 physisorption, TPD-CO2 and H2-TPR, it was possible to study, respectively, the crystalline structure, morphology, characteristic bands of these materials, thermal stability, textural properties, basicity, and reducibility profile of the materials. From the hydrogenation of CO2 using water vapor or H2, the formation of alcohols was observed in all investigated catalysts. Based on the studies conducted, it was possible to conclude that catalysts with a Zr metal center and potassium addition showed better performance, especially K-Cu/UiO-67, which achieved a productivity of 102 µmolEtOH.h-1.gCu- 1, a 32% increase compared to the unpromoted catalyst. This behavior may be associated with the increase in basic sites capable of improving CO2 stabilization on the catalyst surface. The use of water enabled an increase in methanol productivity at low temperatures, and with the variation of the activation temperature, there was a continuous increase in ethanol productivity reaching 18.2 µmolEtOH.h-1.gCu-1 at Tactivation=260°C, with Treaction=180°C and a H2O/CO2 molar ratio of 1, indicating a positive influence of oxidized species such as Cu+ in alcohol formation.
Design, production and advanced characterization of CoCrFeMnNi-based medium- and high-entropy alloys: understanding the interplay with composition, microstructure, and mechanical properties
(Universidade Federal de São Carlos, 2024-04-12)
Silva, David Domingos Soares da
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Coury, Francisco Gil
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https://lattes.cnpq.br/8609825406277730
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https://orcid.org/0000-0002-0457-2087
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Bolfarini, Claudemiro
Worldwide, a great research effort is being employed in the development of Medium/high entropy alloys (M/HEAs). Among the M/HEAs produced to date, great emphasis is given to the equiatomic Co20Cr20Fe20Mn20Ni20 (at.%) alloy due to its good combination of strength and ductility. Studies in this field are increasingly being expanded to non-equiatomic compositions, and there is great opportunity in the development of M/HEAs with excellent mechanical properties. Therefore, based on thermodynamics calculations (CALPHAD method) novel non-equiatomic CoCrFeMnNi M/HEAs were designed aiming at obtaining optimized mechanical properties, tailoring deformation behaviors (TRIP-TWIP) via constituent concentrations. A total of 3 non-equiatomic M/HEAs (Co15Cr15Fe50Mn10Ni10, Co20Cr20Fe40Mn10Ni10, and Co25Cr25Fe30Mn10Ni10) were produced; the alloys were then annealed, thermomechanically processed, characterized, and mechanically tested by tensile tests. The annealed and deformed samples were characterized by a combination of electron backscattered diffraction (EBSD), high-energy synchrotron X-ray diffraction (HE-SXRD), and transmission electron microscopy (TEM). It was revealed that increased Co and Cr reduced stacking fault energy (SFE), increasing recrystallization rate and suppressing grain growth rate. Grain refinement was more effective in the Co25Cr25 alloy, where the optimal strength-toughness occurred. Due to the decrease in SFE, a transition in the dominant deformation behavior occurred from TWIP (Co15Cr15) to TWIP/TRIP (Co20Cr20) and finally to TRIP (Co25Cr25), with the TRIP being more pronounced in Co25Cr25. This work sheds light on the development of novel FCC M/HEAs from the CoCrFeMnNi system, by identifying alloys that exhibit an optimal strength-ductility balance.
Pesquisa-vida-formação e cartografia de afetos no território da Coordenação Pedagógica: diálogos entrecruzados de um diário tese.
(Universidade Federal de São Carlos, 2024-04-12)
Schiavon, Tatiana de Camargo
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Sicard Nakayama, Bárbara Cristina Moreira
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https://lattes.cnpq.br/9746628149674449
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https://orcid.org/0000-0001-5097-459X
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https://lattes.cnpq.br/9626264926154468
In this text, you will find a doctoral thesis anchored in the principles of (auto)biographical approach, as it takes place in/with the itinerancy experienced as Pedagogical Coordinator and researcher in Basic Education. Like this, The objectives proposed here are to understand how the Pedagogical Coordinator gives shape to her experiences and meaning to the profession, in the relationship with what circumscribes the existential territory it inhabits, what are the legal protections, duties, working conditions and training processes that give new meaning to their place in the profession. Path that directed studies and reflections on the field of affections that permeate this entire process of taking of position and construction of a place for oneself in the Pedagogical Coordination. Therefore, a life-training research is assumed, based on the contributions methodological theorists by Sicard Nakayama and Brito (2020), Delory-Momberger (2006), Josso (2002, 2010), Souza (2014), Barbosa (2000), Kastrup (2009) and Freire (1997), in which the method of Cartography of the human and narrative is combined (auto)biographical, in order to follow the processes, learn about the experiences in its creative dimension for the resignification of oneself, both with the group of Pedagogical Coordinators participating in an extension course promoted in favor of research, which was consolidated by uniting the university and the school, as well as an interweaving of the researcher's own experience in life working as Pedagogical Coordinator. This movement of investigation into that research is carried out with others and not about them, led to an analysis interpretative- comprehensive in the light of Souza (2014), giving new meaning to the entire process experienced in itself and in research, a movement that also directed the exercise attentive listening based on Passeggi (2018), recording the entire itinerancy of life intertwined with research in a diary in which listening and writing of oneself and/with the other, opened trails, new routes to understand what circumscribes this professional and academic existential territory lived with the Pedagogical Coordination. The fabrics that were intertwined in the research, in the life and training of all Pedagogical Coordinators involved culminated in the considerations present in this thesis as a movement of transformation and creation of new positions in this territory of Pedagogical Coordination.
Plano Municipal de Educação de Sorocaba/SP: monitoramento, avaliação e controle social
(Universidade Federal de São Carlos, 2024-04-12)
Almenara, Gilsemara Vasques Rodrigues
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Lima, Paulo Gomes
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https://lattes.cnpq.br/5109357037661496
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https://orcid.org/0000-0001-9932-4934
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https://lattes.cnpq.br/4535607952837426
The objective of this research in education policy and management areas was to analyze the debates and clashes in the light of the instances responsible for monitoring and evaluating the PME (Municipal Education Plan) of Sorocaba/SP, regarding the monitoring flow, evaluation flow and referrals for correction of the goals set out in the document (PME), based on the dimension of social control, in the period 2015-2020. The PME was a requirement of the National Education Plan - Law No. 13,005, of June 25, 2014 (Brazil, 2014), which specifies, in Article 8, the requirement of elaboration and / or adequacy of the Municipal Education Plans within one year, counted from this law, which approved the National Education Plan (2014 - 2024), and which determined as the responsibility of the states and municipalities to elaborate respectively their plans in a democratic way, in order to ensure the effective participation of society. The research was limited to the period 2015-2020. The methodology was developed through qualitative research, consisting of bibliographic and documentary analysis and interviews based on a semi-structured script of questions. Data treatment was performed through content analysis, based on Bardin (1977). Three actors contributed to the data collection (03), being a component of the Technical Support Team of the PME, a member of the Permanent Education Forum and a member of the Municipal Council of Education. The results show that: the municipality of Sorocaba did not carry out its biennial stages of Monitoring and Evaluation of the PME, which directly affects the quality of public educational policies and the quality of education. Keywords: Municipal Education Plan; Monitoring and Evaluation; Social Control; Sorocaba/SP.
Novas abordagens para aumentar a sobrevivência e eficiência de cepas de Bacillus solubilizadoras de fosfato
(Universidade Federal de São Carlos, 2024-04-12)
Velloso, Camila Cristina Vieira
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Badino Júnior, Alberto Colli
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https://lattes.cnpq.br/6244428434217018
;
https://orcid.org/0000-0001-8350-9846
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Farinas, Cristiane Sanchez
NEW APPROACHES TO INCREASE THE SURVIVAL AND EFFICIENCY OF PHOSPHATE- SOLUBILIZING BACILLUS STRAINS. In a context where global population growth and the exacerbated impacts of climate change pose critical challenges to food security and environmental sustainability, the adoption of sustainable agricultural practices emerges as an urgent necessity. In this scenario, species of the genus Bacillus, notable for their resilience and ability to promote plant growth through, for example, the solubilization of nutrients such as phosphorus, are explored as microbial inoculants, due to their potential to increase agricultural productivity. However, the variability of environmental conditions highlights challenges regarding the survival and efficiency of these inoculants, demanding strategic innovations. This research proposes an integrated methodology aiming to enhance the survival and efficacy of phosphorus-solubilizing Bacillus strains, thus establishing a sustainable and ecologically responsible alternative to conventional chemical fertilizers. This approach was outlined through three strategic axes: 1) optimizing cultivation conditions to increase the microorganisms' resistance to environmental stresses; 2) encapsulation in biopolymeric matrices to ensure controlled release and protection of the inoculants; 3) the application of Laboratory Adaptive Evolution (ALE) to select strains with improved salinity and drought resistance and growth-promoting capabilities. Adjustments in the cultivation process parameters, such as pH and temperature, along with production scale, resulted in a significant increase in the production of resistant microbial spores, reaching a concentration of 1.31·1012 CFU/mL in a bubble column bioreactor, with a sporulation efficiency of 100%, heat resistance of 78.4%, and an energy efficiency 4.83·1010 CFU/J. The encapsulation technique, employing starch-based biopolymeric matrices with additives like maltodextrin, cellulose, and bentonite, demonstrated protection of the inoculants against environmental stressors, such as UV and extreme temperatures. Different release profiles were observed among the modified films, with variations in initial and prolonged release rates, demonstrating the influence of material properties on the diffusion of microorganisms. While the addition of maltodextrin accelerated the release of microorganisms, cellulose and bentonite increased retention and allowed for gradual release. The application of ALE resulted in the development of Bacillus strains with greater tolerance to saline and water stress, capable of solubilizing phosphorus, producing exopolysaccharides, and forming biofilms. This research offers a significant contribution to the advancement of sustainable agricultural practices by improving the viability and functionality of microbial inoculants, representing an alternative in the face of contemporary challenges of food security and environmental sustainability.
Viabilidade do “Crew Resource Management (CRM)” na indústria de transformação
(Universidade Federal de São Carlos, 2024-04-12)
Campos, Ubirajara Barreda de
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Silva, João Eduardo Azevedo Ramos da
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https://lattes.cnpq.br/3823047207711289
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https://orcid.org/0000-0002-6739-5065
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Voltarelli, Murilo Aparecido
Before the 1980s, research and investigations into aircraft accidents identified human errors as the main cause of aeronautical accidents. These failures primarily occurred in interpersonal communications, decision-making, and leadership. The solution provided by the industry, government, and aerospace agencies was to apply a set of training and practices based on psychological aspects and simulations, which were termed Crew Resource Management (CRM) and have since increasingly enhanced aircraft operations' safety. Other industries recognized the advantages of CRM and began applying it to their own operations, especially in high-risk industries. Despite numerous advancements and the use of high technology, the manufacturing industry faces challenges related to operational quality and safety, including those of employees and equipment. CRM could be a tool to mitigate negative consequences related to these challenges. This work aimed to summarize, through a Systematic Literature Review using the PRISMA method, how CRM is applied in various industries, particularly in manufacturing and non-civil aviation transportation. It also aimed to understand, using field research at an automotive manufacturer in south-eastern Brazil, whether a safety culture already exists and whether it could facilitate the implementation of CRM programs and training in the manufacturing industry. It also aimed to assess its congruences and discrepancies compared to the Systematic Literature Review. The results showed that, with well-crafted adaptations, CRM training can be applied across industries to enhance operational safety, productivity, and the quality of products and services.