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O método dos elementos finitos aplicado à análise estrutural de pórticos planos em MS-Excel
(Universidade Federal de São Carlos, 2022-04-18)
Borges, Augusto Schiapati
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Almeida Filho, Fernando Menezes de
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https://lattes.cnpq.br/0447825383222965
The Finite Element Method was implemented through an application in the Visual Basic for Applications (VBA) programming language directly to the MS-Excel software in order to make the structural analysis process more dynamic and to allow an iterative design that meets the any proposed static scheme facilitating the search for the ideal solution. It was concluded that the proposed application is capable of analyzing reticulated structures with longitudinal and transverse stiffness, obtaining accurate results in relation to displacements and reactions for ported structures and, in addition, is able to calculate internal forces both for static schemes subjected to concentrated loads and for distributed loads.
Reações de fotooxigenação de pinenos em pinocarvonas, trans-pinocarveóis e mirtenal: uma abordagem em regime de fluxo contínuo
(Universidade Federal de São Carlos, 2022-04-18)
Santos, Thiago Izidoro Silva
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Oliveira, Kleber Thiago de
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https://lattes.cnpq.br/3759761373942891
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https://lattes.cnpq.br/1237403355729371
In this work, a continuous flow protocol to prepare (-)-pinocarvone, (-)-trans- pinocarveol and (+)-myrtenal from (+)--pinene, (-)--pinene and -pinene through photooxygenation reactions was described. Furthermore, taking into account that the development of this protocol under continuous flow involves a large number of variables (flow, concentration, productivity, yield, oxygen pressure, and residence time), a new index was created to cover part of these variables (concentration, yield, and productivity), thus facilitating the analysis of the obtained data and the choice of the best and most productive reactional condition; this index was named as Efficiency. With the developed continuous protocol in hand, it was possible to perform the first description of the continuous synthesis of these derivatives on a multigram scale with the following isolated yields: (-)-pinocarvone (12.57 g, 73 %), (+)-pinocarvone (13.56 g, 76%), (-)-trans-pinocarveol (10.83 g, 61%) and (+)-trans-pinocarveol (10.66 g, 62%) in experiments performed in up to 24 h. In addition, promising results were obtained for the synthesis of (+)-myrtenal with a productivity of 9.05 g.day-1, a relevant result to be considered in future investigations.
Obtenção, caracterização e avaliação da performance fotocatalítica de nanoestruturas de TiO2 contendo metais de transição (Nb e W)
(Universidade Federal de São Carlos, 2022-04-18)
Santos, Emerson Chaves dos
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Avansi Junior, Waldir
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https://lattes.cnpq.br/5852409796882171
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https://lattes.cnpq.br/0759803226435293
Heterogeneous photocatalysis has been considered a promising alternative for the removal of several organic pollutants linked to environmental pollution. Among a range of materials currently used, titanium dioxide (TiO2), especially in the anatase phase, it stands out for presenting intrinsic characteristics appropriate for a photocatalyst, such as high stability, photoactivity, atoxicity, and others. As a result, it was has been established that the photocatalytic efficiency of TiO2 is related to several characteristics such as size, shape, crystalline structure, presence of dopants, and others. Thus, the main objective of this work was to obtain, characterize and evaluate the effects of the addition of metallic ions as Tungsten (W) and Niobium (Nb) on the photocatalytic properties of TiO2 nanostructures. These nanostructures were prepared using the conventional hydrothermal method, without the use of additives such as surfactants or halides, at the temperature equal to 200 ºC. The analyzes carried out through the experimental techniques such as X-ray diffraction (XRD) and Raman spectroscopy showed that all samples presented the anatase crystalline phase, regardless of the type or amount of metal ions. The Electron microscopy measurements confirmed the change in morphology as a function of the amount of metallic ions, but are not in relation to the type, W or Nb. The photocatalytic performance of the samples obtained has been evaluated in the degradation of Rhodamine B (Rod.B) and Methylene Blue (AM) dyes, photoactivated by exposure to ultraviolet radiation. According to photocatalytic assays and XPS results, the MxTi1−xO2 (M = Nb and W) nanostructures obtained had their surface characteristics has been altered, favoring the degradation of cationic dyes such as AM. Thus, the Raman and XPS results showed that the amount of metallic ions induced an increase in the presence of defects in the structure, which brought a deleterious effect to the degradation of the Rod.B dye. In a final step, the proposed method also presented promising results concerning to obtaining doped nanostructures only with N (TiO2N) and co-doped nanostructures (W0.03Ti0.97O2N, W0.29Ti0.71O2N, Nb0.02Ti0.98O2N and Nb0.27Ti0.73O2N). The co-doped samples has showed higher photocatalytic performance compared to samples containing only the presence of metal ions, since the results suggest that the presence of N favored the formation of defect pairs, consequently reducing the rate of recombination of charge carriers.
Construção de um pipeline de dados utilizando serviços da nuvem
(Universidade Federal de São Carlos, 2022-04-18)
Arrais, Karolayne Fernandes
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Ribeiro, Marcela Xavier
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https://lattes.cnpq.br/0300141044144026
The evolution of the computer network and the increasing access and interaction of the world population to the internet has provided a change in the data scenario. At all times, data is generated in exorbitant amounts and of the most varied structures, breaking with conventional data systems that were focused on transactional operations, initiating a process where systems have evolved to meet the analytical demands that grow with the concept of process orientation and decisions through information (Data Driven). In the era of Big Data, in addition to the evolution of data models and infrastructure for processing and storage, there was also the specialization of professionals in the area so that each one had mastery over specific processes of the data life cycle. Following this context, the objective of the present study is to build an understanding of the Big Data scenario and its influence on the evolution of current processes and concepts in the area, carrying out a practical development of the creation of a data pipeline solution using computing services in cloud to integrate, collect, model, process and analyze COVID-19 data and world development indicators.
Dos conceitos fundamentais da termodinâmica ao resetting de computadores quânticos
(Universidade Federal de São Carlos, 2022-04-18)
Diniz, Ciro Micheletti
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Villas-Bôas, Celso Jorge
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https://lattes.cnpq.br/5700887540085418
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https://lattes.cnpq.br/3102671365275808
Thermodynamic has been known and studied for centuries, whereas the field of computing, more specifically quantum computing, is new and currently a lot of research has being done to understand and develop this field of physics. Despite the difference in age these branches have, they are understood and expressed by fundamental functions and principles, such as energy, entropy, information, heat, concepts of dissipation and conservation, among many others examples, and the advancement and development of areas allow us to be always updated. Just in the last century, for example, we started, in the scope of computing, to relate entropy with information. Also in this last century it was developed by R. Landauer a principle that relates information with heat flux, this last one has always been strongly linked to the area of thermodynamics, and thus it made clear to us the intersection between the two areas. As time goes by, quantum computing arises and it is growing rapidly, mainly due to its technological appeal. In this work, we are focused on the connection between these branches and just as Landauer's principle we focus our studies on functions that connect the two areas, using appropriate definitions for quantum systems, in order to increase our understanding of quantum thermodynamics. Through the analysis of the results obtained, we were able to observe new and some even counterintuitive behaviors. One of these ones noticed allowed us to develop a reset protocol for quantum systems, a tool widely used in quantum computing.
O processo de alfabetização e letramento na cultura digital: possibilidades e desafios para os anos iniciais do ensino fundamental
(Universidade Federal de São Carlos, 2022-04-18)
Piccirilli, Giovanna Maria Recco
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Monteiro, Maria Iolanda
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https://lattes.cnpq.br/4189205834370563
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https://lattes.cnpq.br/8582953029697001
The present course conclusion work has the general objective to investigate the nuances suffered in the literacy and literacy process in the digital context and theoretical conceptions regarding the concept, given the challenges that institutions, teachers and students went through during on-line teaching in the current pandemic scenario we are experiencing. It also highlights the applicability and benefits of Digital Information and Communication Technologies (TDICs) in the classroom, as well as rethinking the school space integrated with technological resources, bringing students closer to everyday life. The methodology adopted was qualitative research (LÜDKE; ANDRÉ, 2022) carried out in a bank of national theses and dissertations (BDTD) and by the Literacy, Reading and Writing Center of the Federal University of Minas Gerais (CEALE) and Academic Google, using as time frame the last decade (2010-2021). The theoretical perspective that guided the conceptual analysis are the works of Magda Soares (2020; 2021a; 2021b), Maria Iolanda Monteiro (2020; 2010) e Rita de Cassia de Souza Landin (2015; 2020), which guided the categorization of the selection of works and their subcategories. The results obtained through a bibliographic survey revealed that there is a relatively small set of academic research on the discussion of Education in the context of digital culture for the Initial Years of Elementary School, analyzing and reflecting those technologies are increasingly entering the spheres of society, in such a way that it will not be different in the course of literacy and literacy.
Estudo sobre os métodos de reciclagem e reutilização de baterias de lítio de carros elétricos
(Universidade Federal de São Carlos, 2022-04-18)
Ohtsuka, Rodrigo Seiji
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Andreeta, Marcello Rubens Barsi
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https://lattes.cnpq.br/7904227795652627
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https://lattes.cnpq.br/8949216890470229
Electric vehicle (EV), means of transport considered more sustainable to the environment, have become popular around the world in recent years mainly in the United States, Europe and China. For the next decades, the volume of EVs is expected to grow exponentially, replacing large part of the fleet of vehicles with a combustion engine. Issues such the concerns about effects of global warming, government incentives to sell EVs, fast technological development, and optimization in lithium batteries (LiB) are among the main reasons for the expansion of this market. However, it is important to assess which environmental impacts and fate of the large number of LIBs that will be taken from EVs in the next years, in addition to the risk of lack of raw material to manufacture them (mainly lithium and cobalt). In this context, the purpose of this work emerged, whose objective was to carry out a study on the possible social and environmental effects of LiBs, and to discuss the main existing resources and methods to reuse and/or recycling it. After a extensive research in the literature about this topic, it was verified that the reuse (known as second-life use) and recycling through hydrometallurgy and pyrometallurgy will be necessary alternatives in the near future to mitigate the impacts on the environment and possible lack of supply of raw materials of lithium batteries. However, both processes must overcome some barriers to becoming viable on a large scale, mainly economic, making crucial the role of governments to help implement those processes.
Análise da efetividade da estratégia de Hedge no mercado de café
(Universidade Federal de São Carlos, 2022-04-18)
Paladini, Caio Zompero
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Castro, Eduardo Rodrigues de
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https://lattes.cnpq.br/5702172673123334
Given the different risk factors linked to coffee production, combined with the representativeness of Brazil in the production and export of this commodity, the present work aims to analyze the efficiency of the hedging strategy for a coffee producer that seeks a strategy to minimize the risk of your production. Using the maximum expected utility model, the monthly results of the producer's portfolio were analyzed from January 2010 to December 2021, both for futures contracts quoted on the B3 and for futures contracts quoted on the New York Stock Exchange. The results indicate that the hedging strategy carried out in its optimal ratio will promote more favorable conditions to the producer in relation to the reduction of risk and by obtaining the greatest possible utility, in both analyzed exchanges. In addition, it appears that the use of the hedging strategy in the coffee market is more efficient in relation to the non-adoption of this strategy, and also, in relation to the adoption of this strategy for 100% of the production.
Reabilitar é incluir?: um estudo de práticas em Reabilitação Físico-Motora
(Universidade Federal de São Carlos, 2022-04-18)
Gavério, Marco Antônio
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Leite Júnior, Jorge
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https://lattes.cnpq.br/7253561448346772
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https://lattes.cnpq.br/9891680002272215
This investigation aimed to understand a certain homology between 'improve\recover' bodily functionalities and 'inclusion' of certain individuals. In this sense, we consider contemporary dimensions in theoretical debates and in medical-social practices in relation to rehabilitation and people with disabilities. Thus, we seek theoretical and methodological elements to sociologically understand rehabilitation practices as part of theoretical and political discourses on disability. We access a dimension of this debate when we propose field research with professionals in the health area, specifically in rehabilitation, who work in a University Outpatient Clinic. These professionals are physical therapists and occupational therapists who have absorbed and produced clinical and scientific practices aligned with the parameters of the International Classification of Functioning, Disability and Health, the ICF. The ICF has been considered as a new clinical application model based on the idea of human functioning. This document produced by the WHO proposes to guide the production of a definition, classification and political-social evaluation of "people with disabilities". At the same time, the ICF does not present itself as an etiological compendium of "disability" (officially translated in the document as incapacidade), but an instrument for its biopsychosocial understanding as a "component of health". As the ICF was historically produced as a 'social-medical' framework of disability, we paid attention to the way in which the terms 'functionality', 'disability' and 'disability' were elaborated in this document. At the same time, we seek to understand how this Classification of Functions has been absorbed in rehabilitative treatment practices for people with disabilities. The aim was to understand how these discourses on disability relate to clinical and scientific areas of rehabilitation knowledge. And how, apparently, these clinical-therapeutic spaces manipulate the production of “physical-social” functionalities and capabilities. To do so, we do not start from a watertight definition of disability, but how this category has been mobilized in places that aim to produce its care and treatment. In this way, we proposed to observe the daily life of agents in the area of habilitation/clinical rehabilitation and, through the theoretical and practical understanding of their work, to access how the categorical dimensions of functionality, disability and disability are 'materialized' bodily and socially.
Análise filogeográfica do segmento genômico da proteína neuraminidase do H1N1 no Brasil
(Universidade Federal de São Carlos, 2022-04-18)
Martins, Junior Olimpio
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Freire, Caio César de Melo
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https://lattes.cnpq.br/6594298373448536
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https://lattes.cnpq.br/9569757382824595
Seasonal flu, caused by Influenza viruses, is one of the most prevalent viral infections in the world, causing 290-650 thousand deaths annually. Such viruses, whose genome is composed of negatively oriented single-stranded RNA segments, have high mutational rates and the ability to rearrange between segments, allowing them to rapidly escape immune and even the emergence of pandemic strains. After the implementation of SINAN Influenza in Brazil in 2009, there was a large increase in the number of genomes sequenced and the unification of reported cases, allowing phylodynamic analyzes to be carried out on the sequences of the viruses collected in the country and their correlation with epidemiological data. During the present Course Completion Work, the objective was to study the molecular evolution and epidemiology of the Influenza A H1N1 virus in Brazil, using the genomic segment that encodes neuraminidase as a model. Through this approach, it was possible: (i) to calculate the mutational rate of the segment (3.02 x 10-3 substitutions/site/year) in accordance with the existing literature; (ii) identify variations in population sizes correlated with flu seasons with an increase in the number of cases; and (iii) even identify the southern region as a seedbed of flu strains in 2009. These results, despite not including the impact of the rearrangement, provide important information about the epidemiology and evolutionary parameters of seasonal influenza A H1N1 in Brazil.
Implementação de melhorias na plataforma BIPES e no SNEK para microcontroladores de pequeno porte
(Universidade Federal de São Carlos, 2022-04-18)
Peixoto, Vinicius De Oliveira
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Aroca, Rafael Vidal
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https://lattes.cnpq.br/9262228584082064
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https://lattes.cnpq.br/2491537202160741
The way you learn a subject is as important as the subject itself. It is necessary that the new content is presented in such a way that the person won’t find resistance to make the connections and judgments needed to develop knowledge. That’s why teaching Computer Science, an area of great importance nowadays, has met some obstacles. There are barriers that one faces when they start learning programming, like dealing with hard-to-learn programming languages. Visual programming is seen as an interesting alternative to help lower these difficulties, and for that a lot of platforms have been using this resource to ease the learning problem in their field. BIPES (Block-based Integrated Platform for Embedded Systems) is an open source platform that uses block programming to make learning and developing solutions with embedded devices easy. The platform has a lot of easy to handle blocks that span through many different topics, for many different types of boards, sensors and actuators. Expanding the capacity of this platform is desired, giving even more possibilities for computer newbies to be able to build applications for embedded systems. This expansion can happen by adding support to new types of boards, like Arduino, a board that was not supported up until recently, but was added to BIPES due to the introduction of a new extremely lightweight Python-inspired programming language called Snek. This project aims to widen BIPES capabilities by making a new block design to control a servo motor using an Arduino board programmed with Snek code. The block can be used to incorporate monitoring and controlling the servo motor through IoT (Internet of Things) and was validated by random users with and without prior programming experience as being really easy to use.
Estudo e comparação das técnicas de validação cruzada desenvolvidas para séries temporais
(Universidade Federal de São Carlos, 2022-04-18)
Simionato, Daniel
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Moura, Maria Sílvia de Assis
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https://lattes.cnpq.br/9410151859448447
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https://lattes.cnpq.br/5553660480517331
Testing the generalization capacity of an algorithm obtained is crucial for any prediction methodology, for which cross-validation methods were developed. However, when dealing with data that have dependency among observations, as in the case of time series, the usual cross-validation methodologies are not appropriate. Currently, there is no single and usual way to test the generalizability of a predictive model for time series. In this work we will study and compare four different variations of methods for cross-validation, this will be done through simulations of different time series.
Evolução das exportações brasileiras de soja nos períodos 2011-2013 e 2018-2020
(Universidade Federal de São Carlos, 2022-04-18)
Souza, Matheus Rossini de
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Castro, Eduardo Rodrigues de
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https://lattes.cnpq.br/5702172673123334
Given the importance of the soybean market, being the largest exporter and the largest producer of the good on the planet, the present work aims to analyze the evolution of Brazilian exports from the soy complex, which mainly involves grain, bran and oil, through the Constant Market-Share methodology. The importance of the good nowadays is mainly reflected in livestock, biodiesel production and the food industry. Analyzing the periods of 2011-2013 and 2018-2020, it was concluded that soybean exports evolved predominantly through Competitiveness Effect, which demonstrates that Brazil has gained market over the years vis-in to other nations. Here, it is worth mentioning the significant importance of China to Brazil in the soybean market, since the country is the largest buyer of Brazilian oilseeds. Finally, oil and soybean meal exported by Brazil had a fall in their exports, mainly due to the Potential Effect. This demonstrates a fall in global demand for the goods and reinforces the country's position in the export of unprocessed products, using its comparative advantages. In the case of oil, the loss of competitiveness in the world market also contributed to the reduction of exports of this product. Thus, it is important that Brazil solves its logistical and productivity bottlenecks in order to maintain its international competitiveness, as well as seek new markets for oil and bran exports, diversifying the export agenda.
Percepções de licenciandos sobre o estágio supervisionado remoto em tempos de pandemia
(Universidade Federal de São Carlos, 2022-04-18)
Bossolan, Danielle Cristine
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Biazolli, Caroline Carnielli
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https://lattes.cnpq.br/7908630593356660
As a fundamental component of the curriculum in undergraduate courses, the subject of supervised internship aims to provide students in initial teacher-training the confluence of theoretical and practical experiences in the school environment, that being a field of research and knowledge (PIMENTA; LIMA, 2006). Acknowledging the teaching activity as work requires the understanding that numerous aspects essential to "being a teacher" evolve and change over time and with experience, accepting the internship as the primary space in which such ideals and skills first emerge. In order to conduct this research, a historical-temporal cut is made with the purpose of investigating, exclusively, the internship done remotely during the COVID-19 pandemic. We intend to identify and understand the perceptions of a group of undergraduates about this particular period, analyzing experience reports available in open acess environments. At first, this study presents conceptions related to supervised internship, to the context of emergency remote teaching and to experience reports, which served as a basis for the later stage in our research, in which we qualitatively analyze what we found of opinions on remote supervised internships made by the students. To that end, this is an early exploratory study that aims to contribute to the development of understandings of what this period of social isolation was like for those going through teacher-training processes.
Escalada tarifária do café e o novo acordo comercial Mercosul-União Europeia
(Universidade Federal de São Carlos, 2022-04-18)
Silva, Bruno Santos Pelegrini da
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Faria, Rosane Nunes de
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https://lattes.cnpq.br/1172221536399083
The main objective of this work was to identify the existence of tariff escalation for the productive coffee chain for the year 2019. We used two methods to find the effective protection: Nominal Tariff and The Effective Rate of Protection. Additionally, the analysis developed relates these results with the new tariff offers proposed by the European Union in the new agrément to assess a possible reduction or elimination of the tariff escalation. The results show evidence of tariff escalation for the coffee production chain and its elimination within a maximum period of 7 years after the Agreement comes into force. Therefore, it was concluded that the hypothesis of tariff escalation is valid and that this fact harms the national agribusiness's expansion. In addition to eliminating the tariff escalation for the coffe chain, the new Mercosur-European Union Trade Agreement can also bring benefits such as an increase in GDP and agribusiness development. However, Mercosur member countries will need to undergo regulatory reforms to comply with the current regulation in Europe.
Reciclagem de borrachas: uma abordagem sobre processos e impactos ambientais
(Universidade Federal de São Carlos, 2022-04-18)
Miuci, Murilo Butarelli
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Moreira, Francys Kley Vieira
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https://lattes.cnpq.br/7156680316782417
Rubber wastes represent a growing and important environmental issue. Despite the existence of legislation, the increasing demand for rubber products, combined with their improper postconsumer disposal, have caused several environmental, social, and economic impacts. Due to the three-dimensional structure formed by cross-links during vulcanization, elastomeric materials undergo limited reuse pathways. To overcome this limitation, different recycling routes have been applied, such as grinding, energy recovery and, more recently, the devulcanization technique, in which the cross-links are selectively broken, allowing the rubber to be reprocessed and remolded for different applications. This work aims to describe different routes for rubber waste recycling, depicting different applications to reinsert these materials into the production chain. Furthermore, the life cycle assessment (LCA) methodology was applied to compare the eco-impacts resulting from the energy recycling of different rubber materials (natural rubber, SBR, BR and silicone) in terms of the following categories: global warming, human toxicity (carcinogenic effects), and scarcity of fossil resources. Natural rubber presented the smallest eco-impacts when subjected to energy recycling. SBR and BR presented intermediate impacts, also presenting equivalent results, in view of their similar composition. On the other hand, silicone rubber presented the greatest impacts in all analyzed eco-impact categories.
Caracterização dos encalhes de tartarugas marinhas no litoral norte de São Paulo e a influência das ameaças antropogênicas associadas
(Universidade Federal de São Carlos, 2022-04-18)
Nunes, Vitória Lopes
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Arruda, Eliane Pintor de
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https://lattes.cnpq.br/8843243211552880
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Araújo, Vinícius Albano
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https://lattes.cnpq.br/0559800226477492
Sea turtles are aquatic reptiles with a high migratory capacity, distributed along the Brazilian coast, alternating between feeding and nesting areas. Of the seven species in the world, five occur in Brazil. All over the world, a reduction in the populations of sea turtles has been recorded, with an increase in the number of records of strandings being increasingly recurrent, and currently all species being on the Brazilian coast are, at different levels, threatened with extinction. Bycatch and solid waste contamination are one of the main threats to non-target organisms. The analysis of sea turtle stranding patterns allows inferences about aspects of biology and ecology, compiling data on mortality, distribution, diet, sex ratio, feeding areas, spawning and diseases. In this study, (i) we analyzed the effects of seasonality on the abundance of stranded sea turtles, (ii) we verified whether there is a distinction between the sex and developmental stage of stranded sea turtles and (iii) we evaluated whether human activities can contribute to strandings or for greater viewing of beached sea turtles. Stranding data were collected over a six-year interval (2015-2021), on 235 beaches located in the the northern coast of the State of São Paulo, municipalities of Ubatuba, Caraguatatuba, São Sebastião and Ilhabela, on the northern coast of the State of São Paulo, obtained through active daily monitoring and passive and made available on the SIMBA/PMP/BS public domain platform. During the five years of monitoring, 6411 sea turtle strandings were recorded, the majority being Chelonia mydas (n = 5812), Caretta caretta (n = 313), Lepidochelys olivacea (n = 116), Eretmochelys imbricata (n = 61) and Dermochelys coriacea (n = 9). These strandings were reported mainly by the population. Most stranded animals were dead, in an advanced stage of decomposition, and in the juvenile stage of development. Strandings occurred mainly in winter and spring. In animals in which it was possible to determine the cause of death, the main associated anthropogenic factors were fishing gear, injuries from collisions and ingestion of solid waste, such as plastics. The regularity of monitoring programs on beaches in southeastern Brazil made possible studies that suggest to an increase in the frequency of strandings of sea turtles and a pattern of these strandings for the coast of the Southeast, with records for the five species that occur in Brazil. This study demonstrates the importance of monitoring along the Brazilian coast, enabling the collection and study of stranding data, which help to understand the dynamics of marine ecosystems and the main threats to be considered in management and conservation plans. It is necessary to expand environmental and oceanic education activities, promoting reflection on environmental issues, raising awareness and democratizing the participation of different sectors of society.
O uso do omnichannel em pequenas e médias empresas: um estudo sobre a sua aplicação no varejo
(Universidade Federal de São Carlos, 2022-04-18)
Oliveira, Henrique Diez Marques de
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Fiorini, Paula de Camargo
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https://lattes.cnpq.br/8321834215728086
The goal of this study is to investigate the possibility of using omnichannel in small and medium-sized retail companies, as well the benefits and challenges involved in the application. For that, a survey with semi-structured interviews was conducted with three specialists in retail and omnichannel in Brazil. Among the main results, it is highlighted that omnichannel is an important and applicable strategy for large companies and small and medium-sized companies in the retail sector. In addition, it was found that the application of omnichannel brings benefits such as a reduction of the logistical costs and an increase of the company's profit, making the organization able to carry out more assertive campaigns to its customers and provide a unique experience journey to the consumer. About the challenges, small and medium-sized companies may face the high costs involved for implementation, as well as a limiting culture of their employees, who need to be able to make this change for their application. The main contribution of this study is to understand the use of omnichannel as a competitive advantage for companies, even if they are small or medium-sized.
Sistema PET/MR híbrido: aplicação para imageamento in vivo em ambiente de máxima biocontenção
(Universidade Federal de São Carlos, 2022-04-18)
Brito, Marisa Fonseca de Almeida
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Neuenschwander, Regis Terenzi
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https://lattes.cnpq.br/3985101799853723
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Ferri, Fabio Aparecido
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https://lattes.cnpq.br/8314629367795792
The imaging of living organisms, in its different techniques and applications, corresponds to the least invasive and most pragmatic way to analyze the development of infectious processes, in addition to its many other applications for biological research. Specifically with regard to in vivo investigations of infections by highly pathogenic microorganisms, the use of positron emission tomography and magnetic resonance imaging allow the anatomically longitudinal assessment of the infectious course, that is, without the need to resort to the traditional method of euthanasia in series of animals under study. Considering these premises, the CNPEM (National Center for Research in Energy and Materials) was the organization chosen to house the first national maximum containment laboratory, promoting the innovative association of beamlines with maximum biocontainment laboratories. Thus, enabling the analysis of animal models of infections at higher resolutions both at the cellular and morphological levels. The present project proposes to complement the work to be carried out on the beamlines, saving their precious operating time and allowing an additional layer of data to be added to the research to be carried out in biosafety laboratories. Thus, the scope of the project is the broad technical and technological understanding, specification, infrastructure design, acquisition, and biocontained installation of a commercial PET/MR equipment to be initially allocated in a conventional laboratory environment and, later, to be relocated in the future Virology. This proposal aims to establish a coexistence of the CNPEM team with the experience of in vivo imaging, enabling the realization of experiments that guide the future decisions of the configurations of the biocontained installations, in addition to allowing the development of the engineering team regarding the technologies of positron emission tomography, magnetic resonance, signal detection and image processing.
Avaliação do efeito da adição de microssílica em concretos contendo ZnAl2O4
(Universidade Federal de São Carlos, 2022-04-18)
Fini, Diogo Schiavon
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Luz, Ana Paula da
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https://lattes.cnpq.br/3470395641242374
El consumo de refractarios es parte significante del costo de producción de acero, de forma que las acerías consumen en promedio entre 5 y 15 kg de refractarios por tonelada de acero producida. Estos materiales son sometidos a ambientes con altos gradientes térmicos, constantes choques térmicos y con presencia de agentes corrosivos, además de estar bajo solicitaciones mecánicas, como en el caso de ollas de fundición, donde el refractario debe soportar la carga del metal fundido. El espinélio es una fase con gran potencial de uso en estos materiales, ya que presentan excelentes propiedades en altas temperaturas en función de su estructura cristalina. El espinélio ZnAl2O4 (ZA) es de gran interés, ya que puede ser obtenido a partir de óxidos accesibles y presenta una baja temperatura de formación. Este trabajo tuvo como objetivo evaluar concretos del sistema Al2O -ZnO con la incorporación de microsílica, con el intuito de verificar el efecto de este aditivo en la sinterización y en la formación in situ del espinélio ZA. Para esto, fueron evaluadas 3 formulaciones: (i) AZA, (ii) AZCS e (iii) AZMAS, donde AZCS utilizaba cemento de aluminato de calcio como agente ligante, mientras que los demás utilizaban alúmina hidratable; además, en el concreto AZMAS hubo incorporación de MgO con la finalidad de formar espinelio del tipo MgAl2O4 en conjunto con el ZA. Cada una de las formulaciones fue evaluada a través de ensayos de fluidez, flexión en 3 puntos, módulo de elasticidad, porosidad aparente, variación linear dimensional y corrosión. A partir de los resultados obtenidos, fue verificado que el concreto AZCS presenta una mejor resistencia mecánica, mientras que el AZMAS presentó mejor desempeño contra corrosión. La presencia de microsílica llevó a una mejor acomodación de las fases de espinelio durante la sinterización, no obstante, su presencia también perjudicó el desempeño de los concretos contra la corrosión.