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Política industrial em países dependentes: limites estruturais do novo desenvolvimentismo
(Universidade Federal de São Carlos, 2022-03-17)
Barbosa, Tayla Nayara
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Carvalho, Joelson Gonçalves de
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https://lattes.cnpq.br/0141039743607067
;
https://lattes.cnpq.br/1006450649563809
The objective of the research was to analyze and compare the structural economic limits of the new South American developmentalism, taking the cases of Brazil and Argentina as examples. The focus of the analysis was the Lula administration (2003-2010) in Brazil and the Néstor Kirchner (2003-2007) and Cristina Fernández de Kirchner (2007-2011) governments in Argentina. The analysis of these limits was based on the dependency theory of Ruy Mauro Marini (1973), according to which the economies of Latin American countries belong to a historical process of power relations, since they are dependent on transfers of value from the central economies. Therefore, in general, the new developmentalism is seen as an economic development strategy that theoretically proposes to guarantee the binomial: economic growth and income distribution. Thus, what we intend to analyze is whether the economic orientations based on the new developmentalism and implemented by these governments diverged or converged with neoliberalism. The hypothesis investigated is that the new developmentalism failed to constitute itself as an alternative long-term development model, since it did not configure itself as a counter-hegemonic project to neoliberalism.
Contribuição ao estudo de pilares pré-moldados de concreto em etapa transitória
(Universidade Federal de São Carlos, 2022-03-17)
Otrente, João Francisco
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Ferreira, Marcelo de Araújo
;
https://lattes.cnpq.br/4199122391532470
;
https://lattes.cnpq.br/3182929421075739
During its production, the precast structures go through different stages called the transitory stage and, consequently, through different static schemes and requests. The precast columns during this stage have a static beam scheme which can cause particular design situations in which the transitory stage is critical for the design. In addition, many designers do not consider the loss of stiffness due to eventual cracking of the element at this stage. The objective of this work is to evaluate how the application of prestressing with pre-tension helps in the performance of precast concrete columns in particular design situations in which the formation of cracks in the phases of the transitory stage can occur. To achieve this, a case study was carried out on a precast concrete column with a critical transitory stage. The column was analyzed in reinforcement concrete with different static schemes and later in prestressed concrete containing two arrangements of active reinforcement. The analysis of the element in question was performed using the following parameters: tension in the reinforcement, cracking moment, amount of reinforcement and secant flexion stiffness via analytical methods. In addition, a parametric analysis was carried out during the demolding phase and lifting in assembly, whose parameters obtained from the variation of the position of the lifting loops were: bending moments, tension in the reinforcement and stiffness reduction coefficient for the most requested sections. Based on the analysis of the results, it is concluded that when using three lifting loops, the column presented a stiffness of up to 0.84.EI during demolding. With the introduction of prestressing, the column with two lifting loops resulted in a stiffness of up to 0.90.EI at the end of transitory stage. Still, it was observed, via parametric analysis, that the column only presented a stiffness bigger than 0.50.EI when the stress level in the passive reinforcement was less than 0.30.fyk. Finally, it is understood that the loss of stiffness during the transitory stage must be accounted for.
Soluções positivas para equações elípticas com operadores fracionários
(Universidade Federal de São Carlos, 2022-03-18)
Villena, Diana Yovani Rodriguez
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Paiva, Francisco Odair Vieira de
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https://lattes.cnpq.br/2889322093175193
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https://lattes.cnpq.br/0177562178388522
In this work, we present results of existence, non-existence and multiplicity of positive solutions to elliptic problems involving the fractional p-Laplacian operator and the fractional Laplacian in the critical case, through variational methods, sub-super solutions and Mountain Pass Theorem.
Moradia e idoso: um estudo sobre o lugar de envelhecer
(Universidade Federal de São Carlos, 2022-03-18)
Grezele, Gabriely
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Silva, Nayara Mendes
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https://lattes.cnpq.br/1791265073266957
;
Monteiro, Luzia Cristina Antoniossi
;
https://lattes.cnpq.br/2890278808923978
The place of residence directly reflects on active and healthy old age. It is known that the aging process is accompanied by a series of biopsychosocial issues influenced by several factors. Adequate housing can be a facilitator in the process. However, the elderly population increasingly depends on State initiatives to obtain access to adequate housing, and therefore, dignified conditions in old age, reflecting on functional capacity. In this scenario, specific public policies that do not take into account aspects related to health and well being can impact daily activities of daily living and relationships with the place. In this sense, there is a need for studies that investigate housing characteristics and the profile of the elderly in each location, in order to deepen the knowledge regarding the socio-spatial insertion of the resident. It is understood that care policies for the elderly can promote active and healthy aging, regardless of the level of socioeconomic development, enabling the maintenance of functional capacity in a safe environment, encouraging participation in the community. Therefore, the objective of this study was to analyze the housing conditions and the functional capacity of elderly residents of the CECAP neighborhood in Araraquara-SP. It is a transversal, exploratory and descriptive research, based on the quantitative-qualitative method of investigation. The research participants were elderly people registered in the public health facilities that served the neighborhood. Interviews were conducted with semi-structured questions, and the Brazilian Oars Multidimensional Functional Assessment Questionnaire (BOMFAQ) was used to assess functional capacity. The results indicated that the interviewees do not have severe commitment to the performance of daily activities, but they have greater difficulties in the IADL, which are related to health conditions and not directly with the neighborhood. Regarding the participants' perception of housing, it was noted that the feeling of well-being, possession, living conditions and the understanding that there is an offer of product and service structures within the neighborhood, are important aspects that reflect on the quality of housing. of what is lived and the understanding that their housing meets their needs, reflecting on the feeling of belonging, integration and conditions to enjoy the space independently, actively and with dignity in old age.
Ensino de física para surdos: um estudo das teses e dissertações (2007 – 2020)
(Universidade Federal de São Carlos, 2022-03-18)
Stavel, Michael de Oliveira
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Cruz, Tersio Guilherme de Souza
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https://lattes.cnpq.br/0705292304279277
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Silva, Fernanda Keila Marinho da
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https://lattes.cnpq.br/6390725197649567
This final paper approaches the state of knowledge about physics teaching for deaf in the two first decades of the 21th century. For this purpose, a survey of the works present in the CAPES theses and dissertations catalog was carried out and, subsequently, an analysis from titles and abstracts of these thesis and dissertations were made. The study questions are: how many and which are there on this subject? Are these researches articulated? Are there conclusions about methodologies to teach physics with people with hearing disability? What have been the concerns of researchers in the teaching of physics for the deaf? These questions provided theses objectives: to present an overview of theses and dissertations about physics teaching for deaf and discuss methodological and pedagogical aspects found in these works. The results indicated a trend of increasing academic production over the years. Furthermore, we found 27 works distributed in the five regions of Brazil, which can be classified into three thematic approaches: 1) related to didactic resources; 2) related to the understanding of the learning process and, 3) related to communication in LIBRAS of scientific terms. It is necessary to mention that these three thematic focus were also described by other authors, in similar studies, which supported and contributed to this final paper.
A leitura e escrita no contexto da educação infantil
(Universidade Federal de São Carlos, 2022-03-18)
Palauro, Natália Gonçalves
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Monteiro, Maria Iolanda
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https://lattes.cnpq.br/4189205834370563
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https://lattes.cnpq.br/5899168538421559
This bibliographic work aims to survey the relationship between teaching and pedagogical practice and the formation of reading and writing habits from Early Childhood Education, analyzing the work carried out before and after the approval of the BNCC (BRASIL, 2017). The analyzed researches were from the universities around the Federal University of São Carlos, São Carlos – São Paulo. The research base was from the critical historical pedagogy
Formação em cuidados paliativos: apontamentos sobre o processo de ensino na Universidade Federal de São Carlos
(Universidade Federal de São Carlos, 2022-03-18)
Gomes, Maria Caroline Volpin
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Bombarda, Tatiana Barbieri
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https://lattes.cnpq.br/8070700589653226
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https://lattes.cnpq.br/3300621760349154
The National Academy of Palliative Care argues that the teaching of palliative care must occur systematically in undergraduate and graduate courses, as a way to guarantee qualified assistance to who need. Yet, in Brazil, matrices of essential skills are still being developed. This study sought to understand the teaching scenario on palliative care in health courses at the Federal University of São Carlos. This is a descriptive study, with a mixed approach, developed in two stages: documental study with analysis of pedagogical projects, curriculum matrices and teaching plans; and interviews with teachers who provide contents about palliative care within the scope of the teaching and extension. The information from the documentary data was descriptively organized in Excel spreadsheets and an analysis was based on the fundamentals and principles of palliative care. Thematic analysis was carried out for the contents from the interviews. As a result, it was observed the absence of specific disciplines on palliative care and the scarcity of content on the subject inserted in the disciplines that integrate the curriculum matrix. The difficulties in teaching palliative care from the teachers' point of view are due to the lack of understanding on the subject; the difficulty in providing changes in the curricular structure and the reduced number of qualified teachers in the discipline. It was found that the teaching scenario at this federal university presents significant fragility in training in palliative care, a situation resulting from multifactorial aspects from the perspective of professors. The demand for professional training involving skills that guarantee the recognition of the indication for palliative care in a qualified way is notorious, avoiding late or inadequate referrals in health care, a factor that requires efforts and reflections on strategies that minimize the training gaps identified. In this aspect, it is believed that the development of matrixes of essential competences for the performance of palliative care can favor improvements in the training processes, as well as that initiatives of interdepartmental actions can contribute to the reduction of weaknesses identified in this institution.
Síntese de compostos N-heterocíclicos via fotocatálise
(Universidade Federal de São Carlos, 2022-03-18)
Souza, Wanderson Costa de
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Paixão, Márcio Weber
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https://lattes.cnpq.br/3773908504964104
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https://lattes.cnpq.br/2206081928328489
Heterocycles belong to a privileged class of organic compounds that play a prominent role in chemistry and biology. There is an extensive literature about methodologies for the synthesis of these substances, showing their importance. In the last decade, photocatalysis has undergone a substantial expansion driven by the search for new ways to achieve molecule activation and the growing interest in the development of more sustainable methodologies. In view of this scenario, our group has sought to contribute to the progress of photocatalyzed methodologies, applying photocatalysis to synthesize N-heterocyclic compounds. In this study, three photocatalytic methodologies were developed, one employing photoredox catalysis and the others employing photocatalysis by energy transfer. The first one is described as a cascade cyclization reaction initiated by alkyl radicals generated via photocatalyzed deamination by visible light. Under mild reaction conditions, the developed method provides a series of benzazepinones with a wide substrate scope, good functional group tolerance and good yields. In the second methodology, the synthesis of cyclobutanequinolinones was achieved through [2+2] cycloaddition reactions by energy transfer. The method has also a wide substrate scope, tolerates structural variations well and produces a large variety of cyclobutane derivatives with yields ranging from 27-99%, and with excellent regio- and diastereoselectivity. The third methodology was developed using 1,3-enynes in photocatalyzed reactions. It is a highly sustainable methodology which employs a metal-free catalyst (1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene) (4CzIPN), blue LED as activation source and a dimethylcarbonate solvent. (DMC). By this method, a series of 1,3-diene quinolinone derivatives were obtained in excellent yields.
Simulação numérica do processo de secagem de concretos refratários em aplicações tecnológicas
(Universidade Federal de São Carlos, 2022-03-21)
Cunha, Túlio Mumic
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Luz, Ana Paula da
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https://lattes.cnpq.br/3470395641242374
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Pandolfelli, Victor Carlos
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https://lattes.cnpq.br/7369376873984839
Refractory ceramics are used in high temperatures due to their unique properties that enable a high thermal and chemical stability, mechanical strength, thermal properties and others. These materials are split into two main groups: shaped and monolithic. The latter acquires its shape during application and is commonly obtained as a powder, to which a liquid, commonly water, is added for mixing and for reacting with the binding agents to guarantee suitable green strength. Following, it is subjected to careful heating schedule to withdraw this water, because rapid generation of steam can lead to the failure of the lining. The drying process is often approached empirically in the industry, and this work aims to introduce a computational methodology for comparison and optimization of such heating profiles. Initially, a finite element method modeling was developed, with the help of a library, in Python, which was the basis for a number of simulations that were divided into three stages: profiles with constant heating rate, others with a plateau and also complex curves. The analyzes showed the need to use properties as a function of temperature, so it is as close as possible to a real material; high heating rates (≥ 50°C/h) are viable for linings with small thickness (< 20 cm); the withdrawal of free water at plateaus with temperatures below, but close to, the temperature of the beginning of the hydrate decomposition process enables the use of short plateaus at higher temperatures, speeding the drying process. Finally, using indicators such as drying status, resistance ratio and energy consumption, it was possible to compare the curves with each other to choose the one that best meets the needs of the end-user.
Valorização da propriedade rural: uma análise comparativa das diferentes formas de valorização aplicados a imóveis rurais no município de Angatuba-SP
(Universidade Federal de São Carlos, 2022-03-21)
Verardi, João Paulo
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Santos, Leandro de Lima
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https://lattes.cnpq.br/2750978055015275
This work addresses the existence of different forms of property valorization, as they are attributed at different times: one from the calculation of the Real Value, which is given at the time of contributing as the government through the collection of taxes and taxes, also through the calculation of the Market Value in the marketing and collection of resources such as financing, being obtained, for analysis purposes, from primary and secondary data. The data obtained primarily are based on the use of the proposed method for NBR 14.653 on a rural property selected by the author of this work, and contrasted with the value obtained through the Venal Value Calculator of the Institute of Agricultural Economics (IEA). For the secondary data, an analysis was carried out based on information obtained from the real estate agencies of the municipality of Angatuba in contrast to the values measured in the Municipal Decree of Angatuba No 519/2021. The results obtained point to a higher valuation of the property by defining the Market Value of the property, which is used for example as a guarantee in financing, and to undervaluation of the property measured from the Market Value, used, for example, for property payments. imposts and transfer or declaration of benefits. Finally, it was discussed the practical result of the possible contrast between the Sales Value and Market Value of the property.
Potencial antifúngico de nanoemulsões de óleo essencial de Cravo-da-Índia (Syzygium aromaticum)
(Universidade Federal de São Carlos, 2022-03-22)
Cipriano, Lavinia
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Ferreira, Marcos David
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https://lattes.cnpq.br/6652079760634274
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Sousa, Cristina Paiva de
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https://lattes.cnpq.br/9002619114161319
Essential oils are extracts derived from plants, defined as secondary metabolites compounds, being an important defense mechanism of plants. The antimicrobial activity of the oils is mainly due to their hydrophobic nature, and it is believed that this activity against bacteria and fungi is directly related to the major compounds present in the essential oil. Clove (Syzygium aromaticum) is a plant native to Indonesia, with an extensive literature record of the activity of clove essential oil against bacteria and fungi. Phytopathogenic fungi that attack crops after harvest are responsible for the loss of tons of crops worldwide. In tropical regions, Penicillium spp. and Rhizopus stolonifer have a high incidence, and cause diseases known as “Green Rot” and “Black Rot”, respectively. The use and application of essential oils in their pure form has some limitations, such as their volatility, high reactivity and hydrophobicity, making their direct incorporation into foods difficult. In order to maintain their biological properties and reduce the impact of their application on food, the oils were incorporated into emulsions and nanoemulsions to later be encapsulated. Materials and methods: The production and characterization of nanoemulsions with Clove EO was carried out, after the determination of the Hydrophilic-Lipophilic Balance (HLB), from the mixture between aqueous and organic phase, consisting of the EO and a mix of surfactant composed by Tween 80 and Span 80. After characterization, a comparison was made between the antifungal activity of the pure essential oil, emulsion and nanoemulsion against postharvest fungi Penicillium spp. and Rhizopus stolonifer. Results: After the determination of the BHL, a nanoemulsion with a particle size of 50 d.nm was produced. From the antifungal activity tests, it is concluded that the nanoemulsion did not increase the essential oil activity against the tested fungi, being the oil in its pure form more efficient than the emulsion and nanoemulsion.
An analysis of the relationship between additive manufacturing and circular economy
(Universidade Federal de São Carlos, 2022-03-22)
Tavares, Thais Moreira
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Godinho Filho, Moacir
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Ganga, Gilberto Miller Devós
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https://lattes.cnpq.br/9062191157466610
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https://lattes.cnpq.br/4310619949372745
Additive Manufacturing (AM) is an important technology of Industry 4.0. It allows the fabrication of objects layer by layer in a continuous or incremental way. Circular Economy (CE) aims to improve resource efficiency in order to lead to a shift from the current linear model of receiving, transforming and disposing to a model where resources flow in a circular manner. Some early studies refer to Additive Manufacturing as a promise of sustainability and development of more circular material flows. However, there is still uncertainty about the impacts and benefits of Additive Manufacturing for circularity. From this context, this work aims firstly to understand the relationship between additive manufacturing and circular economy. To achieve this goal, a multi-method study was carried out to understand how AM is beneficial or challenging in a Circular Economy context. Second, it aims to collaborate in the implementation of AM strategies in an EC context. To coordinate the elaboration of the strategies, a second multi-method study was carried out, using a fuzzy DEMATEL method. This method was used to understand the interdependence relationships between the barriers raised in the first study. The study of these relationships is essential in the elaboration of strategies for implementing a more circular AM. The research contributes to practice and theory. In theory, it elaborates the state of the art of the intersection between the themes, evolving into a framework addressing benefits and barriers (validated by experts) that AM brings to CE. The study also contributes to practice by showing to organizations what developments and strategies need to take place to smooth the way for a circular AM.
Alterações genéticas associadas ao gene apoe em pessoas com declínio cognitivo subjetivo (DCS): uma revisão sistemática
(Universidade Federal de São Carlos, 2022-03-22)
Fernandes, Carla Nunes Fonseca
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Cunha, Anderson Ferreira da
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https://lattes.cnpq.br/0329741640375661
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Vale, Francisco de Assis Carvalho do
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https://lattes.cnpq.br/7135183635933470
Subjective cognitive decline (SCD) consists of a self-perception of cognitive decline, with no objective impairment on cognitive tests and no functional impairment in activities of daily living. It represents a transitional stage between the asymptomatic state and the impairment of cognitive functions. Studies indicate that neurobiological bases participate in the process of the loss of cognitive function in the early stages of SCD. There is evidence that the neurobiological processes are related to polymorphisms in different nucleotide positions of the gene that codes for apolipoprotein E (APOE), changing the sequence of the original amino acids and modifying its structural properties. It is therefore believed that these alterations may influence the functional properties of APOE and promote the accumulation of β-amyloid plaques and the formation of neurofibrillary tangles. The molecular and physiological mechanisms leading to these clinical conditions are not yet known in detail, and therefore correlating the studies already developed aimed at further exploring these questions are critical. We performed a data collection that relates the APOE gene with DCS, through the libraries: PubMed, Mendeley and Web of Science, in the period from June to August 2021. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) model was used to construct this systematic review. Ninety studies were identified, of which only 34 met the inclusion criteria. Fifty-six studies were excluded by the following criteria: no characteristics related to DCS and APOE genotype, animal research, systematic review or meta-analysis, other genetic biomarker, protein receptor or hormonal factor, book chapter, DCS or APOE related to another disease or early onset AD, which is not associated with APOE as a risk factor, or articles that do not deal with the pre-clinical phase or year less than the stipulated date of the study. The related data pointed out in this literature review corroborate the literature in the possible existence of a clear relationship between DCS and the APOE genotype specifically in the ε4 allele in memory impairment in its early stages
Agricultura familiar e crédito via PRONAF: fatores determinantes da utilização nas regiões Serrana, Norte e Noroeste do Rio de Janeiro
(Universidade Federal de São Carlos, 2022-03-23)
Almeida, Claudio Cezar
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Batalha, Mario Otávio
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https://lattes.cnpq.br/1015001063418091
;
https://lattes.cnpq.br/6717374300414740
Family farming is of great importance to the Brazilian economy, due to its participation in food production and its ability to employ labor. Also, in Rio de Janeiro, family farming is highlighted, especially in the Mountain, Northern and Northwest regions. However, throughout Brazil, family farming faces important challenges to fully exploit its potential. The credit is among these challenges. For family farmers, credit is a vitally important element. With this perspective and aiming to strengthen the granting of credit under conditions consistent with the reality of family farming, the federal government created in 1996 the National Program for Family Agriculture (PRONAF). This program has played an important role in providing credit for family farmers throughout Brazil. In eight months of the 2021/2022 harvest, 1,274 thousand rural credit contracts were financed, corresponding to an amount of R$ 188.4 billion (BRASIL, 2022). However, in some regions it is less used than in others. In the northeast, for example, only 7.3% of family farmers accessed PRONAF in 2016, while in the southern region this percentage reaches 48.8% (IBGE, 2017). This is the case, for example, of the regions studied in this thesis. Without having the objective of making a comparative study between regions of Brazil, it is important to know which factors can best explain the raising of credit, via PRONAF, by farmers in the Mountain, Northern and Northwest regions of the State of Rio de Janeiro. Thus, this work has as main objective to identify determining factors of access to rural credit by family farmers located in the Mountain, North and Northwest regions of the State of Rio de Janeiro. To achieve this objective, were used primary data collected through face-to-face interviews in 499 households, distributed in the three regions. These data were analyzed in a logistic linear regression model, built from a set of hypotheses that are based on a conceptual model built with theoretical elements of the Resource-Based View and the Transaction Cost Theory. The results obtained through the econometric model made it possible to confirm the identification of four factors (marital status of the family farmer, the share of the value of rural production in the total income of the property, the availability of guarantees and access to technical assistance) as determining factors of access to PRONAF credit by family farmers in the state of Rio de Janeiro, in addition to providing subsidies to suggest measures related to rural credit and improvements in the management of properties and production processes of family farmers.
Atomização a gás do aço ferramenta A2: efeito dos parâmetros de processo nas características do pó
(Universidade Federal de São Carlos, 2022-03-23)
Mathias, Laura Emi Tavoni
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Gargarella, Piter
;
https://lattes.cnpq.br/4641435644243916
;
https://lattes.cnpq.br/6497697599064366
Gas atomization is the main method in powder metallurgy to produce powders for additive manufacturing (AM). The gas atomization process allows generally spherical and very fine metallic powders with great yield on the particle size range for AM applications. Moreover, this is a rapid solidification process that ensures chemical homogeneity and a high degree of microstructural refinement. Iron-based alloys have wide properties range and low cost, in which tool steels are especially important for industrial applications. This project produced A2 tool steel powders by gas atomization and evaluated the influence of the process parameters on the characteristics of the powders. No systematic study has been carried out on atomization and AM of this tool steel. Thus, analyzing the gas atomization process of this material is important to ensure the production of powders with proper characteristics. The statistical tool of design of experimental (DOE) was applied, and the atomization pressure and melt superheat process parameters were analyzed. The response variables analyzed were morphology, median particle size, particle size distribution, density and flowability. The powder characterization was done by laser diffraction, sieving, scanning electron microscopy, chemical analyses by EDS, flowability by Hall and Carney Flowmeter Funnel, density by helium pycnometry and apparent density. This study showed that the gas atomization process of the A2 tool steel was suitable for the production of powders for applications in AM. The model proposed by Lubanska, which formulate the mass median particle diameter, was also validated. Furthermore, the process with the lowest pressure level (20Bar) and the highest melt superheat (300K) has the lowest gas/metal ratio and mean particle size (D50) and particle size distribution similar to the other powders produced.
Modelos para estimativas de propriedades físico- mecânicas de espécies de madeiras tropicais em função da densidade aparente e da frequência de vibração transversal
(Universidade Federal de São Carlos, 2022-03-23)
Silva, Larissa Soriani Zanini Ribeiro Soares
;
Lahr, Francisco Antonio Rocco
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https://lattes.cnpq.br/2333091200416653
;
Christoforo, André Luis
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https://lattes.cnpq.br/7623383075429186
The wood is an excellent material of constructive application, little inserted to the market of the national construction, but with great potential of exploration. This fact is justified not only by restrictions of a social-historical nature, but also by the ignorance of the species and their properties. The difficulties in characterization the wood, given the amount of test required and the need for specific machinery and specialized labor, contribute even more to the current situation. As an alternative to simplify the knowledge of the properties of wood, this study aims to adopt a new technological solution to estimate the physical-mechanical properties, non- desctrutive characterization, of tropical wood through the combination of apparent density and the natural frequency (first mode) of the transverse vibration test, based on regression models, given the lack of studies, at national and global levels, that use these two tests combined as estimators of all the physical-mechanical properties of wood. For this, 05 species of tropical wood were distributed in the resistance classes (C20 to C60) of the hardwood group. Sixty transverse vibration tests were be carried out on pieces of structural dimensions of square section (12 cm x12 cm) and variable length (2 m to 2.7 m) and another 720 of wood characterization, in specimens standardized according to ABNT NBR 7190:1997, totaling 780 experiments. For each species, and for the grouping, linear regression models were generated as a function of bulk density and transverse vibration frequency, as well as multivariable quadratic regression models using bulk density and vibration frequency as independent variables in order to estimate the physical-mechanical properties of the woods. From the regression models for the species in isolation, with the exception of the class C40 species, little correlation was noted between density and natural frequency with the other properties, resulting in estimates of poor precision. For the set of species, the best adjusted coefficients of determination (R²aj) were obtained when analyzing the quadratic multivariable regression models, obtaining values greater than 70% for 13 models out of the 16 evaluated. It is noteworthy that, for the main mechanical properties of the woods, and of greater importance for the structural calculation (fc0, fv0, fM, Ec0 and EM), the adjusted coefficients of determination were above 80%, indicating models with excellent fits for the prediction of properties.
Engajamento de crianças com Transtorno do Espectro Autista nas rotinas da educação infantil
(Universidade Federal de São Carlos, 2022-03-23)
Morais, Giovana Cássia de
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Elias, Carina Sousa
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https://lattes.cnpq.br/0070734946202776
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Della Barba, Patrícia Carla de Souza
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https://lattes.cnpq.br/6448489426438006
Child development monitoring is increasingly essential for identifying potential and difficulties in learning. Engagement in routines is one of the factors that can contribute to the achievement of children's goals in a variety of areas, whether they have typical or atypical development. The beginning of the school life of children with Autism Spectrum Disorder (ASD) can be a challenge for quality participation in Early Childhood Education routines. In this way, understanding the functioning and profile of engagement in school routines can make an important contribution, both to the educators and family members, and also to the gain of academic knowledge. Therefore, the present study aimed to identify how the engagement of children aged 3 to 5 years old with a diagnosis of ASD in the routines of Early Childhood Education occurred, from the point of view of educators. The research was carried out in the national territory and the method was quantitative and descriptive, without manipulation of variables. Data collection and analysis took place under the following structure: response to an online form via “Google Forms” by each child's educator, with questions of the ClaMEISR’s instrument - Classroom Measure of Engagement, Independence, and Social Relationships. The objective of the protocol is to help the school team and the family in the evaluation of the routines of children aged between 3 and 5 years old. The score was obtained through questions about activities carried out by the children during a day at school, making it possible to assess how engaged the child was in each of their routines, so this could be monitored and worked on. As a result, it was found that the children with ASD did not show sophisticated engagement in the analyzed routines, demonstrating the need for curricular adaptations as something fundamental for expanding engagement in the educational context for students who are part of school inclusion programs. In the conclusion there is the suggestion of future studies to cover different age groups, in order to understand the impacts of engagement in the scholar context, and also how the environmental factors may favor or limit it.
Influência da morfologia no comportamento magnético em aglomerado de CoTPP
(Universidade Federal de São Carlos, 2022-03-23)
Rocha, Alberto José Moreira
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Souza, Ernesto Chaves Pereira de
;
https://lattes.cnpq.br/1505400360366643
;
Oliveira, Adilson Jesus Aparecido de
;
https://lattes.cnpq.br/4640148190073166
The study of magnetic properties in organic molecules with transition metals has been intense in recent decades, mainly due to the ease of changing their magnetic behavior, either through the introduction of different types of atoms or through changes due to proximity effects with other materials. This thesis we presents the investigation of the magnetic behavior of samples of Cobalt 5-10-15-20-meso-tetraphenylporphyrin (CoTPP) deposited on SiO2 surface. The results showed high values of magnetic moment which as a consequence, led to the appearance of superparamagnetism in samples with a morphological aspect a few deposit, which suggest an interdependence between the morphology and the magnetic response. With aid of morphological techniques, it was possible to suggest the causes magnetic response. These results indicate the possibility of altering the magnetic behavior from changes in the morphology of the samples.
Sistema mecatrônico para identificação automática de filamento polimérico utilizado em processo de Manufatura Aditiva (Impressão 3D)
(Universidade Federal de São Carlos, 2022-03-23)
Cardinal, Gabriel Cioffi
;
Endo, Marcos Tan
;
https://lattes.cnpq.br/7506367468260024
;
Aroca, Rafael Vidal
;
https://lattes.cnpq.br/9262228584082064
Technological development and the improvement of manufacturing processes allowed the emergence of new manufacturing techniques over time. 3D printing has become a practical and affordable way to manufacture parts, products and components, whether mechanical or structural. This technology is increasingly common, both in industrial and private environments, due to its versatility and easy interaction with the method. However, in additive manufacturing, it is necessary to know the material that is being used, since the configuration of FDM (Fused Deposition Modeling) 3D printers for a given polymer directly impacts the proper functioning and quality of the manufactured part. In the present work, the construction of a low-cost prototype capable of differentiating Polylactic Acid (PLA) and Acrylonitrile Butadiene Styrene (ABS) filaments was carried out through the indirect measurement of an intrinsic mechanical property of the materials, the hardness. This procedure was possible by building a system, driven by a servo motor linked to a four-bar mechanism, capable of measuring the difference in the penetration depth of a metallic tip in the filaments, through the interaction of a magnet with a Hall effect sensor. It was possible to identify both filaments from the differentiation of hardness, and the results were in line with the references provided by the manufacturer of PLA and ABS filaments.
Análise de diferentes configurações do leito de jorro com agitador mecânico e do equipamento convencional
(Universidade Federal de São Carlos, 2022-03-24)
Barros, João Pedro Alves de Azevedo
;
Freire, José Teixeira
;
https://lattes.cnpq.br/2270677706718167
;
https://lattes.cnpq.br/9478039068045142
The mechanical spouted bed emerged as a modification of the conventional spouted bed to minimize problems in the movement of solids and the need for high air flows just for the existence of the spouting regimen. Therefore, this study aimed to analyze the modified spouted bed configurations incorporating three different types of the mechanical stirrer, and to observe the differences relative to the conventional equipment. Straight-blade, inclined-blade, and helical screw agitators were used with different types of inert particles (glass, alumina and polyethylene). For the analysis, variables such as the fluid dynamic behavior, velocity profile, air flow reduction, cycle time, drying and granulometry. The fluid dynamics of the mechanical spouted bed depends on the geometry of the stirrer and its speed of rotational. In the agitators with the form of straight or inclined-blades, the fluid dynamics was qualitatively similar to the conventional spouted bed, however, the differences between the conventional and the agitated bed become significant as the rotation speed of the agitator increases. For example, as a result of the increase in the rotation of the stirrer, there is a reduction in the fluid dynamic parameters, mainly in relation to the air flow required to agitate the bed. Similarly, the air velocity profile will also depend on the type of stirrer, the air flow used and the rotation speed, with higher values in the center of the bed, except for the screw-type stirrer. The effects of rotation speed and blade inclination on fluid dynamics were minimized from 240 rpm, depending on the mass of the particles inside the bed. The inclined-blade stirrer showed the best reduction in airflow and pressure drop, considering the effect of rotation speed and the different groups of particles, mainly in the tests with a greater height of the static bed. The increasing in the number of stirrer blades resulted in reduced air flow and better bed stability, but these results were only more evident at low rotational speeds. The proposed model for the straight-blade stirrer provided good predictions in terms of maximum pressure drop and air flow. In the drying process, it was evident that the time to reach equilibrium was different for each of the configurations, that is, the changes caused a change in the transient regime of the drying process. Rotation speed is also a parameter that can control the drying process, which also affects the characteristics of the final product, such as moisture and granulometric distribution. In general, the use of stirrers in the spouted bed provided significant improvements, reducing the air flow needed to stirrer the bed and pressure drop, in addition to providing greater stability to the bed. The XVII insertion of the stirrer in the bed can favor new applications and also expand the operating ranges of the conventional spouting, since in this equipment there are no problems of spout collapse and geometric limits.