Repositório UFSCar

O Repositório Institucional da UFSCar (RI UFSCar) é um sistema de informação que visa armazenar, preservar, organizar e disseminar amplamente a produção intelectual dos diversos setores e segmentos da comunidade da UFSCar, provendo o acesso aberto à informação produzida na instituição e registrada como científica, tecnológica, didática, artístico-cultural e técnico-administrativa.

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O papel do servicescape em lojas de parques e resorts temáticos: um estudo de caso a partir da perspectiva dos funcionários
(Universidade Federal de São Carlos, 2025-12-08) Cezar , Maria Eduarda Canaparo Zago; Guimarães, Márcia Regina Neves; http://lattes.cnpq.br/9250214706491925; https://orcid.org/0000-0001-8471-3216
This study analyzes how servicescape elements manifest in retail stores located within theme parks and resorts and how they contribute to the consumer experience, from the employees’ perspective. The research adopts a qualitative and descriptive approach, based on an experience report conducted in a real themed retail environment, complemented by interviews with five employees who worked in stores within the same context. The results indicate that elements such as layout, product organization, atmosphere, support technologies, and customer service play a fundamental role in shaping the experience, promoting journey fluidity, thematic immersion, and interactions with visitors. It is concluded that the servicescape operates in an integrated manner as a central element in creating engaging experiences and generating perceived value in themed retail.
On the interplay between interstitial doping, grain size, and TRIP effect in a CrCoNi alloy
(Universidade Federal de São Carlos, 2026-02-26) Bertoli, Gustavo; Coury, Francisco Gil; http://lattes.cnpq.br/8609825406277730; https://orcid.org/0000-0002-0457-2087; Kiminami, Claudio Shyinti; http://lattes.cnpq.br/5443002033733395; https://orcid.org/0000-0001-8231-7316; http://lattes.cnpq.br/1228687595087909; https://orcid.org/0000-0002-6336-6072; Mazzer, Eric Marchezini; Otani , Lucas Barcelos; Goldenstein, Hélio; Caram Júnior, Rubens; http://lattes.cnpq.br/7273276940567054; http://lattes.cnpq.br/2519980413159984; http://lattes.cnpq.br/7081512949222824; http://lattes.cnpq.br/1091025573756924; https://orcid.org/0000-0001-9208-2047; https://orcid.org/0000-0002-2831-2335; https://orcid.org/0000-0003-4287-5342; https://orcid.org/0000-0001-6996-5116
After the popularization of medium/high entropy alloys, some CrCoNi alloys are gaining attention for their outstanding toughness and mechanical performance. The Cr- and Co-rich alloys, such as Cr40Co40Ni20, present a favorable combination of two mechanisms: the FCC to HCP strain-induced phase transformation (TRIP effect), which provides improved ductility and toughness; and a high strengthening potential via grain refining, which significantly enhances its mechanical strength. Furthermore, interstitial doping with C or N can strengthen the alloy by inducing precipitation and microstructural refinement. However, according to recent review papers, the influence of these interstitial elements on TRIP effect and stacking fault energy (SFE) is still controversial, and the related explanation is not completely convincing. The objective of this work is to evaluate the interplay between interstitial doping, grain refinement, and TRIP effect. Firstly, in situ synchrotron X-ray diffraction during tensile testing allowed us to observe and quantify the strain-induced transformation throughout the entire test. The results indicated that: in terms of stress, the critical stress for TRIP is proportional to the grain refinement strengthening; and in terms of strain, grain size has no obvious influence on TRIP effect. Then, the effect of C and N on phase equilibria, grain refinement capacity, and TRIP effect was evaluated. C-doping promoted the formation of M23C6 precipitates, which was highly effective in inducing grain refinement through the pinning mechanism, while N-doping did not promote the formation of nitrides, but also induced grain refinement to a lesser extent. Both C and N affected the extent of the TRIP effect by altering the SFE. The N addition disfavored the TRIP effect, while C addition did not show monotonic behavior, but higher C levels also disfavored TRIP effect. For these low SFE alloys, the martensitic HCP phase is transformed back into the FCC phase during heating (martensite reversion) by recrystallization of the FCC matrix, and not by a displacive or diffusional HCP to FCC transformation before recrystallization. These findings highlight the complex interplay of mechanisms governing the microstructure and deformation behavior of CrCoNi alloys.
Elementos constituintes da identidade docente na área de ensino de ciências e matemática
(Universidade Federal de São Carlos, 2026-02-19) Silva, Marcos Paulo; Furlan, Elaine Gomes Matheus; http://lattes.cnpq.br/3179865576965852; https://orcid.org/0000-0002-5413-7964; http://lattes.cnpq.br/3373655804902988; https://orcid.org/0009-0006-7635-5029; Faria, Paulo Cézar de; Calefi, Roberta Maura; http://lattes.cnpq.br/3630521378837174; http://lattes.cnpq.br/4485733140916218
The undergraduate teacher training programs seek, through their curricula, to promote initial training for the teaching profession. However, due to the low interest in the teaching career, it is still common for undergraduates and graduates to migrate to other areas in detriment of teaching, factors that may be related to working conditions and the low recognition of the profession by society. Regarding Natural Sciences and Mathematics, there have been significant advances that allowed for greater visibility for the area with the creation of Graduate Programs and, in certain cases, curriculum reformulations. Furthermore, Teaching Incentive Programs have emerged in recent years aiming for greater attractiveness for the teaching career, through teaching practice even during initial training, as in the case of the Institutional Program of Scholarships for Initiation to Teaching (PIBID) and the Pedagogical Residency Program (PRP). In this sense, based on Marcelo García (1999), Nóvoa (1992) and Gatti (2012), who address the issue of teacher training; Huberman (1992) who studies the stages of the teaching career and, Dubar (2005) who investigates Teacher Identity, this work sought, through a bibliographic research and, subsequently, the use of Discursive Textual Analysis, to verify which are the most recurrent elements for the initial training and also, for the construction of the Teacher Identity of undergraduates from courses focused on natural sciences and mathematics, in the context of theses and dissertations defended in Programs in the area of Science teaching. Results indicate that some factors appear as more significant for the professional choice for teaching, such as family and teacher influences, as well as the individual life trajectories of each individual. It was also observed, through the analyses of the dissertations and theses, that the specificity of the area of natural sciences and mathematics was not located, indicating that, despite there being identification with the area of study, this is not the only preponderant factor in the choice of the teaching career.
Condução e manejo de miniestacas de Trema micranthum (L.) Blume
(Universidade Federal de São Carlos, 2026-03-18) Souza, Lindomar Alves; Quadros, Kenia Michele de; http://lattes.cnpq.br/2209314957208420; https://orcid.org/0000-0003-0873-9582; Silva, José Mauro Santana; http://lattes.cnpq.br/1206055452889306; https://orcid.org/0000-0003-0662-4132; http://lattes.cnpq.br/0513360845229806; https://orcid.org/0000-0002-9992-4849; Môra, Rômulo; Dutra, Felipe Bueno; Pádua, Franciane Andrade de; http://lattes.cnpq.br/3456015172126546; http://lattes.cnpq.br/2753005636186745; http://lattes.cnpq.br/2945447364979913; http://lattes.cnpq.br/4122016283592995; https://orcid.org/0000-0002-2234-6753; https://orcid.org/0000-0002-6280-7307; https://orcid.org/0000-0002-9992-4849
The production of seedlings of native forest species is essential to meet the increasing demand for ecological restoration and biodiversity conservation. In this context, vegetative propagation techniques have been widely investigated as an alternative to seed-based propagation, especially for species that exhibit germination limitations. Among the species of interest, Trema micranthum (L.) Blume stands out as a fast-growing pioneer species, characterized by a low germination rate from seeds, around 35%. In addition, the species shows potential for medicinal use, associated with the presence of compounds such as cannabidiol without THC in its flowers and fruits, which broadens its scientific and economic relevance. The objective of this study was to evaluate the productive performance and rooting of mini-cuttings of Trema micranthum in a clonal mini-garden system, considering the influence of climatic factors, types of mini-cuttings, spacing between ministumps, and seedling quality indicators over time. The study was conducted at the Federal University of São Carlos, Sorocaba campus, between 2023 and 2025, in a semi-hydroponic system under controlled fertigation, with two spacing arrangements between ministumps (0.10 × 0.10 m and 0.10 × 0.20 m) and successive collections of mini-cuttings. Linear and multiple regression analyses with climatic variables, Spearman correlation, time series models (ARIMA/ARIMAX), and non-parametric tests were applied to compare treatments. The results indicate temporal variation in productivity associated with the age of ministumps and temperature, while rooting did not decrease with ministump age. No statistically significant differences were observed between spacings in terms of productivity and rooting of mini-cuttings. It was observed that the average productivity was 4.1 mini-cuttings per ministump per month in the wider spacing and 3.2 mini-cuttings per ministump per month in the 0.10 × 0.10 m spacing, with rooting percentages exceeding 50% in all collections performed. Variability among ministumps in terms of average mini-cutting productivity was also verified, allowing the identification of superior and inferior individuals. It is concluded that proper management of the clonal mini-garden and the selection of productive individuals are efficient strategies to optimize the clonal production of T. micranthum, expanding its use in forest restoration and future applications of economic interest.
Simulação do processo de produção do metanol a partir da reação de hidrogenação do CO2 utilizando H2 verde proveniente da eletrólise e CO2 proveniente da absorção por Amina
(Universidade Federal de São Carlos, 2025-08-12) Garcia, Eduardo Cotta; Santos, João Batista Oliveira dos; http://lattes.cnpq.br/0285313473901330
The excessive release of CO₂, a greenhouse gas, contributes to the rise in the planet’s average temperature, leading to significant environmental and economic impacts. Converting CO₂ into methanol through hydrogenation yielding renewable methanol, a fuel and an important feedstock in the chemical industry emerges as a promising alternative to reduce the concentration of this gas in the atmosphere. In this context, simulating both the renewable methanol production process and the main routes for obtaining the raw materials, CO₂ and H₂, provides valuable insights into the generation of this product. Therefore, this work aims to simulate in Aspen Plus version 14 the processes involved in renewable methanol formation via catalytic reaction, alkaline water electrolysis, and CO₂ absorption from greenhouse gas streams using monoethanolamine (MEA). These simulations demonstrated consistency with existing green methanol production facilities, such as those developed by the Icelandic company Carbon Recycling International (CRI), and allowed a comparison of the required amounts of CO₂ and water needed for such operations. In this way, a mass yield of 72.5% was obtained for carbon capture and a consumption of 2.25 tons of water in alkaline electrolysis per ton of methanol produced.