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ACUX: um guia para escrita de aspectos de UX em Critérios de Aceitação de User Stories
(Universidade Federal de São Carlos, 2021-04-27)
Souza, Jonathan Henrique Jeremias
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Zaina, Luciana Aparecida Martinez
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https://lattes.cnpq.br/0192085115595443
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https://lattes.cnpq.br/2450239519119988
In recent years, the use of agile software development practices has expanded. In this same context, the concern with User Experience (UX) factors in the software development process has become evident, which is a differential, an aspect of quality. Among the artifacts used in agile practices, User Stories (USs) have great prominence and acceptance, being these the most adopted method to document requirements in agile approaches, as they present points that developers need to elaborate direct form, from the end user perspective. Together with the USs, the Acceptance Criteria (ACs) are described, to complement them, presenting points that should be considered by developers when implementing the software, in addition to defining when a US is satisfied. The attention devoted to the requirements stage, significantly impacts the quality of a final product. However, even understanding the importance, it is common for UX-related requirements to be neglected in practice. It is observed that there is a demand for tools and methods that can eliminate difficulties both in requirements engineering related to UX, as well as in the integration of UX with agile development. Thus, the objective of this master’s project was to propose a guide, called ACUX, composed of guidelines to help developers and software teams to write aspects of UX in ACs of USs. From a preliminary study of the literature, it was possible to identify and understand the main related topics and obtain an overview of the research. A Systematic Literature Mapping (MSL) was conducted to gather evidence on existing approaches related to ACs and USs, and UX. The results confirmed the absence of studies focused on ACs, and made it possible to establish a relationship between the existing approaches and necessary actions for elaboration of the proposal. An exploratory study was conducted to identify how developers describe UX aspects in ACs, and for that, a qualitative analysis was carried out on a set of USs/ACs. The results showed that UX aspects can be included in ACs. ACUX was proposed considering information extracted from the MSL and from the results of exploratory study. The proposed guide was validated by four specialists, who are in the areas of: Software Engineering, Human-Computer Interaction, and UX. After the validation process, the final version of ACUX was defined. ACUX was evaluated in a case study carried out in industry, in which two development teams, from two software startups, used ACUX in real projects. After use, the participants made the artifacts (USs and ACs) available that were prepared with the support of ACUX, and provided feedbacks on the use of the guide through interviews. The analysis of the artifacts showed that in the two startups, UX aspects were reported in most ACs elaborated with support of ACUX. The interviews, on the other hand, showed that ACUX conduce the writing of UX aspects in ACs, promoting the discussion of UX information.
Produção integrada de etanol 1G/2G utilizando meios industriais e leveduras recombinantes
(Universidade Federal de São Carlos, 2021-04-27)
Pereira, Laís Portugal Rios da Costa
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Zangirolami, Teresa Cristina
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https://lattes.cnpq.br/4546701843297248
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https://lattes.cnpq.br/8648684269387357
Second generation (2G) ethanol is an alternative to increase the supply of this biofuel without expanding the sugarcane plantation area and to utilize the excess of sugarcane bagasse available in Brazil due to the intense economic activity related to sugar and alcohol production. Due to the advances in Molecular Biology, Saccharomyces cerevisiae strains capable of assimilating and fermenting xylose, the main sugar present in the hemicellulosic fraction of lignocellulosic materials, have been developed. However, the low tolerance of these yeasts to hemicellulose hydrolysates inhibitors (acetic acid, hydroxymethylfurfural, furfural and phenolic compounds) and to ethanol leads to loss of cell viability and to low fermentation rates and ethanol productivities, compromising the performance and economic viability of the fermentation process. Thus, the development of more efficient production processes to obtain high ethanol concentrations, compatible with those required in the distillation step, from hemicellulose hydrolysates with high sugar concentrations, is necessary. Process improvement depends both on the availability of yeast strains that are more tolerant to inhibitors and on operating strategies that minimize the effects of the inhibitors. On the other hand, the incorporation of by-products from the sugar and alcohol industry, such as molasses, in the composition of the medium for the production of 2G ethanol favors the flexibility and economic viability of the process. In this context, the present study aimed to evaluate strategies to establish a robust and scalable process for obtaining 2G ethanol under industrial fermentation conditions and to promote the integration of 1G and 2G ethanol production. The performance of three latest generation recombinant yeasts (S. cerevisiae GSE16-T18, GSE16-T18 HAA1 and MDS 130), immobilized on calcium alginate gel, was evaluated in in natura sugarcane bagasse hemicellulose hydrolysate, obtained from acid pre-treatment (not concentrated), supplemented or not with molasses. Synthetic media were also evaluated as a control. The experiments were carried out in repeated batches in minireactors and in a fixed bed reactor and fermentations were accompanied by carbon dioxide production and by analysis of reducing sugar concentration, respectively. The concentration of sugars and metabolites in the supernatant was determined by High Performance Liquid Chromatography (HPLC) and the viability of the cells by the methylene blue technique. It was found that, unlike concentrated hemicellulose hydrolysates, the concentration of inhibitors present in in natura hemicellulose hydrolysate does not severely impact the fermentation performance. The supplementation with molasses proved to be an efficient strategy to achieve high fermentable sugar concentration, allowing to obtain productivities of up to 23 g/L/h and prolonged operation in repeated batches, compatible with the industrial operation. The toxic effect of high ethanol concentrations (above 80 g/L) on cell viability was observed for all strains and limited cell recycling to a maximum of five repeated batches. The performance of the strains in terms of conversion of fermentable sugars and productivity and yield in ethanol was similar, with the exception of MDS 130, which was unable to efficiently assimilate xylose in the presence of high hexose (glucose and/or fructose) concentration.
A importância da análise ergonômica do trabalho na contestação da doença ocupacional - estudo de case em um indústria de panificação
(Universidade Federal de São Carlos, 2021-04-27)
Caldeira, Jaqueline de Queiroz
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Rodrigues, Danielle Gonçalves
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https://lattes.cnpq.br/9090503218956634
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Gazzola, Jonathan
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https://lattes.cnpq.br/0159433721761670
Ergonomic Work Analysis (EWA) has been a great ally for understanding the work environment, making it possible to assess the factors that influence the performance and health of employees. In this analysis, several factors, stages and tasks developed by employees are evaluated, so that it is possible to determine which areas need improvements and require action to be taken to achieve the ergonomic requirements of workers, respecting their limits and needs. One of the tools used in an EWA, is the Suzanne Rodgers method, which is the same used in the ergonomic report studied in this work. The ergonomic report, applied in a bakery, analyzed the frequent and sporadic tasks performed by a confectioner and confectionery assistant, where three criteria were evaluated: level of effort, time of effort and effort per minute in the six main muscle groups of the human body, thus making it possible to determine the risk of accidents at work and occupational diseases, to which such employees were exposed.
Mitigação dos inibidores gerados no pré-tratamento da biomassa vegetal: impacto técnico-econômico-ambiental de diferentes rotas de processo na biorrefinaria
(Universidade Federal de São Carlos, 2021-04-27)
Pinto, Ariane Silveira Sbrice
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Farinas, Cristiane Sanchez
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https://lattes.cnpq.br/9933650905615452
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https://lattes.cnpq.br/6134437994430328
The presence of inhibitors is still an economic bottleneck that needs to be resolved in order to make 1G2G ethanol biorefineries feasible, requiring the development of technologies capable of improving their competitiveness in the biofuels marketplace. Soluble and insoluble lignin can impair the enzymatic hydrolysis process by inhibition, deactivation, and unproductive adsorption of enzymes. Washing the pretreated biomass or using lignin-blocking additives during saccharification could mitigate these negative effects in future biorefineries. Here, an investigation was performed of the combined mitigation processes, in terms of their technical and economic feasibility in a 1G2G sugarcane biorefinery. Evaluation was made of the impacts of biomass washing and soybean protein addition, separately or in combination, on glucose yields for hydrolysis in the presence of high (liquor) and low (buffer) concentrations of soluble inhibitors/deactivators. Combining washing and soybean protein addition provided the highest glucose yields, with an increase of up to 50%. The effect of the mitigation processes could be explained by a combination of catalytic mechanisms acting on both soluble and insoluble lignin. In an industrial context, biomass washing (90 ºC, 15% (w/w) solids, 3 steps) followed by soybean protein addition (12% (w/v) solids) provided a cost-competitive methodology for bioethanol production, with an estimated net present value of US$ 9.16x107, optimizing hydrolysis process in the 1G2G sugarcane biorefinery. Moreover, integrating both biomass washing and soybean protein addition units was a potential strategy for achieving a profitable and an eco-friendly biorefinery. The life cycle analysis of ethanol production showed that the categories of climate change and photochemical oxidation potentials were reduced if the washing process unit was considered in 1G2G biorefinery plant, with the most sustainable biorefinery achieved if only the soybean protein addition was included.
Frailty model for multiple repairable systems hierarchically represented in serial/parallel structures under assumption of ARAm imperfect repairs
(Universidade Federal de São Carlos, 2021-04-27)
Gonzatto Junior, Oilson Alberto
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Tomazella, Vera Lucia Damasceno
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https://lattes.cnpq.br/8870556978317000
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Louzada Neto, Francisco
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https://lattes.cnpq.br/0994050156415890
The main objective of this thesis is to extend the methodology used to treat failure time data. In particular, we wish to propose an appropriate modeling to a context of hierarchically represented repairable systems, subject to competitive risks and unobserved heterogeneity. To do that, we took one of the necessary steps, we propose modeling for a single repairable system with a hierarchical structure under the assumption that the failures follow a non-homogeneous Poisson process with a power-law intensity function under the frequentist and bayesian framework. In this context we used a corrective approach to remove bias with order O(1/n), and the respective exact confidence intervals are proposed. We illustrate the use of both methods with an early-stage real project related to the traction system of an in-pipe robot. In the sequence, we introduced a framework to the reliability estimation in systems with serial structure and failure modes structured in a parallel way, we continued the studies of the robotic unit previously analyzed. Finally, we propose a statistical model to the reliability estimation of groups of repairable systems hierarchically represented, under a competing risks framework, with the consideration of the existence of unobserved heterogeneity that acts individually on the systems of each group, and also the possibility of imperfect repairs. To illustrate, we consider a database with the failures of agricultural machines categorized in different groups.
Método para avaliação das condições ergonômicas em serviços da construção civil
(Universidade Federal de São Carlos, 2021-04-27)
Martins, Andreia Sofia Moreira
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Paliari, José Carlos
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https://lattes.cnpq.br/9387796929252598
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https://lattes.cnpq.br/4546071107654200
The labor activity in the civil construction sector is among the most harmful for workers and the activities produced require a high repetitiveness of movements and handling of heavy materials and components, which make it difficult to use correct standards of posture and contribute to the high rate of musculoskeletal injuries. This study aimed to present a method to assess working conditions and improve the analysis of the risks that the worker is exposed to from the ergonomics point of view. The method was developed through the articulation of different tools, such as the Ergonomic Work Analysis (AET) methodology and the application of other ergonomic risk assessment tools, such as the Ergonomic Workplace Analysis (EWA), Ovako Working Posture Analysing System (OWAS), Rapid Entire Body Assessment (REBA) and Metabolic Equivalent (MET). The research was divided into three phases. In the first phase, a bibliographic review was carried out on ergonomics in civil construction and two exploratory Case Studies were carried out in the execution of the masonry service, one for sealing and the other structural, which included: visits to construction sites; interviews with those responsible and the masonry workers; photographs and footage of the execution of the works; and the application of AET and the EWA tool. For the second phase, six Case Studies were carried out and the application of the AET and the EWA, OWAS, REBA and MET tools were carried out. The third phase presents the conception and validation of the method, developed through the diagnosis generated by the application of ergonomic risk assessment tools in the Case Studies. The diagnosis made it possible to identify the most harmful situations practiced during masonry activities and made it possible to present recommendations for the mitigation of risks in sealing and structural masonry services. Therefore, this study demonstrates that the articulation of different methods and tools improves the development of ergonomic analysis, in particular, the integrated identification of risk factors and risk assessment through the use of specific tools, essential for a diagnosis in situations in the construction industry.
Papéis dos profissionais da rede de apoio à inclusão escolar na educação infantil
(Universidade Federal de São Carlos, 2021-04-27)
Costa, Juliane Dayrle Vasconcelos da
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Vilaronga, Carla Ariela Rios
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https://lattes.cnpq.br/6536774151778096
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https://lattes.cnpq.br/1803843269613637
Beyond the entry, it is also necessary to ensure the permanence, participation, and learning of students from the Target Public of Special Education (TPSE) in all levels, steps, and modalities of teaching. For this, the research recommends the offer of various types of support services, according to the potentialities, needs, and specificities of each person. The provision of various types of services demands a range of professionals, forming support networks for school inclusion, that acting in partnerships, with defined and clear roles, should seek common objectives, to ensure the necessary services to the schooling of the TPSE. The present study had as main objective, to describe and characterize a support network for school inclusion in children‟s education. As specific objectives pretended to: a) describe which professionals formed the support network for school inclusion in early childhood education and b) analyze the roles assigned and executed by these professionals who worked in child education with students TPSE. The study with qualitative approach, of descriptive type, had case study delineation, of a municipal network of a medium-sized city in the state of Pará. Thirty-two professionals participated in the study, including: one special education coordinator; four special education advisors; three professionals from the multiprofessional team; seven responsible for the management team; four common room teachers; three special education teachers and ten support professionals for school inclusion, acting in the municipal education network, in early childhood education, with TPSE children. The data collection instruments were: a characterization questionnaire; four semi-structured scripts of individual interviews and four semi-structured scripts of interviews with focus groups. The research design had three steps: ethical and initial referrals; knowing the locus, the professionals and the roles attributed to the professionals in the support network for school inclusion and finally, identification of the roles performed. After collection, the data were transcribed and reviewed, and then analyzed qualitatively, through thematic axes, titled with the names of the categories of the participating professionals. As end results, it was possible to identify the presence of different categories of professionals working in the support to students TPSE of the early childhood education of this municipality. However, having a significant number of actors does not mean that there is orchestrated performance and collaborative partnerships. In general, it is concluded that a clear definition of the roles of the professionals studied is necessary, as a strategy to reduce work overloads and deviations of functions.
Catalisadores de Cr/ZrO2 promovidos com metais alcalinos ou alcalinos terrosos para a desidrogenação oxidativa do propano com CO2
(Universidade Federal de São Carlos, 2021-04-27)
Oliveira, João Pedro Bueno de
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Ferreira Palhares, Adriana Paula
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https://lattes.cnpq.br/5736423072715628
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https://lattes.cnpq.br/9424948456049602
Propene is used as a raw material for thermoplastic resins, adhesives and acrylic derivatives, being obtained mainly by steam cracking naphtha and natural gas. However, the oxidative dehydrogenation of propane reaction using carbon dioxide as a moderate oxidant (ODP-CO2), has been studied as an environmentally more interesting proposal. Chromium and zirconia-based catalysts are widely applied in ODP, however, they have major limitations due to the need for catalytic regeneration resulting from the formation of coke on the surface. The addition of alkali metals (AM) or alkaline earth metals (AEM) in chromium catalysts shows promise for ODP, increasing conversion, selectivity and stability, in addition to decreasing the amount of coke on the catalytic surface, due to changes in the acid/basic characteristics of the catalyst surfaces. In general, this paper seeks to evaluate the effect of the addition of AM or AEM on the catalytic properties of monoclinic Zr-supported Cr catalysts applied to ODP-CO2, advancing the understanding of the role of CO2 as a moderate oxidizing agent in the reaction. Thus, two monoclinic zirconia supports were synthesized using hydrothermal (ZrH) and precipitation (ZrP) methods, which have similar crystallinities and low specific areas, but with different pore structures. The addition of chromium to the supports did not change the crystalline phase, but reduced its specific area and pore volume; for ZrH there was the formation of Cr+6 oxides of easier reduction, while in ZrP, mainly Cr+6 and Cr+5 oxides of more difficult reduction were formed. The promotion of Cr/Zr catalysts with AM or AEM did not change their crystallinity and increased the amount of Cr+6 species, however reducible at higher temperatures. Furthermore, the Cr/Zr catalysts promoted by AM or AEM have different populations of basic sites according to the amount and type of metal added. The addition of AM to Cr/Zr catalysts was able to suppress the formation of by-products and coke, especially with the addition of sodium, providing reasonable stability to the catalysts promoted for 300 minutes. Although this effect was more evident on the catalyst supported on zirconia H (0.5% Na-Cr/H), the best catalytic performance was obtained for 0.5% Na-Cr/P compared to 10Cr/P, which also revealed outstanding CO2 conversion, indicating favoring of DOP-CO2 from 600°C to 700°C. However, the favoring of the DOP-CO2 route was more evident by the addition of AEM to Cr/Zr catalysts, mainly 0.5% Ca-Cr/P, although the same effect of suppression of the formation of by-products and of coke.
Efeito de um programa de reabilitação de baixo custo, baseado em teste funcional, com e sem supervisão do fisioterapeuta na DPOC: ensaio clínico controlado e randomizado
(Universidade Federal de São Carlos, 2021-04-27)
Silva, Marcela Maria Carvalho da
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Arcuri, Juliano Ferreira
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https://lattes.cnpq.br/6130168092528900
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Di Lorenzo, Valéria Amorim Pires
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https://lattes.cnpq.br/9071791546812165
Introduction: Patients with COPD present a decline in lung function, tolerance to physical exercise and quality of life, and the pulmonary rehabilitation program (PRP) is essential for the prevention and improvement of this clinical condition. However, access to PRP in patients with COPD is restricted, limiting it to 10% of this population, therefore, alternative models that expand accessibility need to be tested. The literature is still conflicting on the subject, leaving gaps on how to develop the individualized and progressive prescription from functional tests, considering the low cost, and also on what is the degree of supervision of the ideal physiotherapist to obtain positive results. From the gaps in the literature, this thesis was composed of two studies. Study 1- study STUDY I: Objective: To describe an accessible, low-cost and individualized pulmonary rehabilitation protocol based on functional clinical tests for individuals with symptomatic COPD. Methods: This is a descriptive study, referring to a low cost pulmonary rehabilitation protocol, according to different degrees of supervision by the physiotherapist, being registered in the Brazilian Clinical Trials Registry (ReBec) URL: http://www.ensaiosclinicos.gov.br/rg/RBR-533hht/ number UTN code U1111-1220-8245. Results: The protocol was designed according to the basic principles of PR prescription, lasting eight weeks, however, low cost tools were used for the prescription and progression of aerobic training intensity, based on the individual performance of the functional tests (six-minute step test (TD6), six-minute walk test (6MWT) and one-minute sit and stand test (TSL1) and upper limb strength training (test of ten maximum repetitions with free weights). In addition, two levels of supervision by the physiotherapist were tested, as one group had face-to-face guidance from the physiotherapist weekly, during the eight weeks, and each week there was a weekly meeting at the specialized center and other days held at home, and another group received a single orientation in the first week of the PR (but also had an individualized prescription). Conclusion: An affordable and low-cost PRP was proposed based on individualized functional tests and it is expected that the PRP prescription proposed in this protocol will have positive effects on exercise tolerance and quality of life, promoting accessibility to treatment in patients with COPD.STUDY II: Objectives: to describe and verify the effect on exercise tolerance, dyspnea sensation and health-related quality of life of a low-cost PRP based on functional tests, performed at home, with or without supervision by the weekly physical therapist. Methods: This is a clinical trial, randomized and controlled, performed at the Laboratory of Respiratory Physiotherapy and Spirometry at the Federal University of São Carlos. According to the established inclusion and exclusion criteria, 272 volunteers were contacted, of whom 89 patients were evaluated, through anamnesis, laboratory blood tests, physical examination and spirometry. All patients were assessed by functional tests (6-minute walk test, 6-minute step test and 1-minute sit and stand test), dyspnea scale, exercise tolerance and pre-and post-intervention health-related quality of life. Of the total number of patients evaluated, 50 were included in the rehabilitation and, randomized into two groups, 25 patients in the orientation group (OG) who participated in a single meeting for orientation (educational) and 25 patients in the supervised exercise group (SG) with weekly meetings with the physiotherapist. Results: There was no difference between groups at baseline. Time influence (pre and post intervention) was found with a statistically significant difference (p<0.01) for functional tests, sensation of dyspnea and quality of life. Regarding the 6-minute step test, 6-minute walk test, mMRC and CAT, a significant difference was also observed between the groups, verified in the interaction (p<0.01) and confirmed by the syntax analysis (p<0.01) (CAT: SG= of 19, 5±6.8 to 13±7.8 points, OG= from 17±7.6 to 15±10 points), (mMRC: SG= from 2[2-3] to 1[1-2], OG= from 2[2-3] to 2[1-3] points) and (Distance walked 6-minute walk test: SG: from 367.7 ± 84m to 433.2±88.8m, OG= from 396.2 ± 97.2m to 418, 33±83.8m) and 6-step test (SG= from 67.1 ± 25.7 to 93.5 ± 37.2, OG= from 69.6 ± 19.5 to 82.3 ± 25.2 numbers of steps).). In conclusion, the results showed that the low-cost PRP had a positive effect on exercise tolerance, dyspnea and health-related quality of life, which was greater in the presence of face-to-face weekly supervision by the physical therapist, when compared to non-supervision.
Lifestyle and rehabilitation during the COVID-19 pandemic: guidance for health professionals and support for exercise and rehabilitation programs
(Universidade Federal de São Carlos, 2021-04-28)
Goulart, Cássia da Luz
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Silva, Rebeca Nunes
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Oliveira, Murilo Rezende
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Guizilini, Solange
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Rocco, Izadora Salvador
Efeitos de um procedimento informatizado e aplicado de forma remota e síncrona na leitura e escrita de sentenças para crianças em idade escolar
(Universidade Federal de São Carlos, 2021-04-28)
Silva, Natany Ferreira
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Postalli, Lidia Maria Marson
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https://lattes.cnpq.br/2748282330028870
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https://lattes.cnpq.br/4210143840110003
Reading and writing repertoires are fundamental for learning more complex academic skills and enable individuals to be more autonomous. Behavior analysis has demonstrated success in applying the equivalence-based instruction (EBI) model of sentence reading instruction to children with learning disabilities. This study replicated and evaluated the effects of a computerized equivalence-based instruction (EBI) procedure on reading and writing in school-aged children. Six children, from three Brazilian states, aged from 8 to 10 years old, attented enrolled in the 2nd and 4th grades of elementary school participated in the study. For recruitment and selection of participants, the research was advertised in different messaging apps groups. The researcher made the invitation through a message published in the groups, informing about the research, the objective, the procedure, and the telephone contact. The participants were indicated by their own family members or by third parties who had contact with the children. The criteria for participating in the research were: having a maximum of 60% of correct answers in reading sentences in the Reading and Writing Network Assessment; having a computer and internet access at home; presenting behaviors such as remaining seated for the research activities, paying attention to the tasks and following the researcher's instructions and questioning her if there were doubts, and availability to participate at least three times a week in the online activities. Pre- and post-intervention and multiple probes between teaching matrices designs were employed. The teaching consisted of EBI and on the organization of stimuli in matrices, and it was conducted via a remotely and synchronously computerized procedure. Three teaching matrices were used, respecting a sentence complexity hierarchy. In the teaching sessions, the three diagonal sentences from each of the three matrices were used, totaling nine teaching sentences. For the evaluation of recombinative generalization, the nine trained sentences, six intra-matrix generalization sentences and 12 stimuli from the recombination of the elements of the three matrices (inter-matrix generalization) were used, being a total of 27 sentences in the study. The phases sequences were: 1) Initial evaluation: Reading and Writing Network Assessment, Syntactic Awareness Test and Generalization Evaluation: Typed Dictated Sentence Test; 2) Teaching the relation dictated sentence-figure (AB) and the relation dictated sentence-written sentence construction (AE); 3) Probes between the matrices; and 4) Final evaluation: Initial evaluation: Reading and Writing Network Assessment, Syntactic Awareness Test and Generalization Evaluation: Typed Dictated Sentence Test. Participants strengthened or learned the taught relations AB and AE for the taught matrices. In the assessed relations, they also strengthened and/or showed emergence of relations not directly taught. Overall, participants demonstrated increased reading comprehension repertoire (BC and CB relations) for the taught and recombined sentences, as well as increased correct sentence reading responses (CD). The data showed that the teaching conditions applied remotely and synchronously contributed to the learning of sentence reading for school-age children. Investment in studies that aim seek to develop computerized teaching procedures, especially in the pandemic context, may contribute to the learning of students in the literacy process.
Avaliação da utilização de cinzas de queima de bagaço de cana-de- açúcar na biossorção de corantes presentes em águas residuárias têxteis
(Universidade Federal de São Carlos, 2021-04-28)
Sfair, Isabella Christina Athayde
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Neves, Ubaldo Martins das
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https://lattes.cnpq.br/4956114867482782
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Neves, Anne Alessandra Cardoso
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https://lattes.cnpq.br/5825341428803511
The presence of dyes in textile effluents is considered one of the biggest problems by industries. These substances are mostly characterized by their low degradability, high toxic and carcinogenic potential and they can contaminate the environment and cause several problems that involve public health. In order to remedy these impacts, techniques to process these compounds are studied. Adsorption has been one of the widely accepted techniques to carry out environmental treatment of these effluents. This process is based on the affinity that some varieties of solids have in retaining certain substances on their surface. Biosorption is the adsorption process through the use of agro-industrial waste as adsorbent. The present work aimed to evaluate efficiency of ash from sugarcane bagasse in biosorption of AZUL dye BG-R CONC-EA, which it is widely used in textile industries. Tests were carried out at Federal University of São Carlos, Lagoa do Sino campus, and they contemplated preparation and characterization of adsorbent material and carried out on material with large percentage of carbon element in its composition. This can help in technique efficiency. The surface area, the volume of the pores and micropores were determined, being 333 m².g-1, 0,21 cm3/g e 0,09 cm3/g, respectively. These results were similar to those found in the literature.. The characterization of dye was also carried out, according to the Chemical Safety Information Sheet and the modeling of adsorption behavior using Langmuir isotherm. Results of isotherms revealed that all tested solutions are within favorable range to adsorption process and the solution, with a volume of 0.1 g of ash, presented the highest value of maximum adsorption capacity with separation factor closest to 1. It is concluded that the material chosen as an adsorbent has the potential to be used in the purification of wastewater from the textile industry. However, further studies should be carried out to improve the material's absorptive power.
A criança surda na Educação Infantil: o desenvolvimento de linguagem na perspectiva do professor
(Universidade Federal de São Carlos, 2021-04-28)
Pinto, Milena Maria
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Santos, Lara Ferreira dos
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https://lattes.cnpq.br/7312070448044165
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https://lattes.cnpq.br/4207519162784448
The diversity in the current school context, considering the target audience of Special Education, brought relevant changes to education, especially regarding the inclusive proposal, resulting in different professional practices and teaching models. Concerning the deaf, education for this public has as main parameters the linguistic and cultural differences, which should be prioritized in the learning process through bilingual education. In this context, this work aims to investigate, understand and problematize how the child language development process takes place from the teacher. This is qualitative research, whose instrument for data collection was the use of an online questionnaire - via Google Forms, with open and multiple choice questions. The participants are 15 hearing teachers who work or have worked in Early Childhood Education classrooms with the presence of one or more deaf students in public schools in the state of São Paulo in the last four years. The questions seek to understand specific points about the teacher's perspective regarding the language of deaf children, regardless of the proposal and school team. The discussions and results were elaborated from the responses to the form and the data were organized in thematic axes, according to the objectives of this research. The data analyses are anchored in the assumptions of the historical-cultural approach and indicate the impacts of social relations on the formation of the deaf subject, highlight the conceptions of teachers; language and experiences in the educational context before contact with Libras, generating reflections on inclusive and bilingual school proposals. It is expected, from this research, to contribute to studies in the area of Special Education and deaf education, especially regarding child development in this educational stage.
Efeito do método de preparação do catalisador na decomposição do metano
(Universidade Federal de São Carlos, 2021-04-28)
Drummond, Lorenna Magalhães
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Santos, João Batista Oliveira dos
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https://lattes.cnpq.br/0285313473901330
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https://lattes.cnpq.br/4867213940241975
The catalytic decomposition of methane reaction as is an alternative for the production of hydrogen and carbon nanomaterials, being considered a COx free route. The transition metals Ni, Fe, and Co are the most used as catalysts, pure or supported, in this reaction. The type of carbon formed in the reaction depends on the experimental conditions and the type of catalyst. Therefore, the objective of this work was to verify the influence of the catalyst preparation method on the production of hydrogen and carbon nanomaterials via methane decomposition. Ni catalysts supported on Al2O3, containing 10, 20, 30, 40, 60, 80 and 100% Ni, were prepared by coprecipitation and fusion methods. The catalysts and carbon nanomaterials were characterized by X-ray diffraction, scanning and transmission electron microscopy, Raman spectroscopy, nitrogen adsorption, reduction in the programmed temperature and thermogravimetric analysis. The catalytic reaction was carried out in a fixed bed reactor, at temperatures between 500 and 700 °C, atmospheric pressure, flow rates of 50 and 200 mL/min with 40% CH4 for 1 or 3 hours. The results of the characterizations suggest that materials prepared by the coprecipitation method have smaller particle sizes and, consequently, greater surface area. Both methods of preparation were efficient in the formation of carbon nanomaterials and the catalyst 80Ni-Cop had the highest amount of formed carbon, 8,67 gC/gcat, at 600 ºC with a flow rate of 200 mL/min. Considering the catalysts tested with a flow rate of 50 mL/min, 80Ni-Fus was the one with the highest formed carbon, 7,45 gC/gcat, at 600 ºC. The catalysts produced in this work and tested at DCM enabled the formation of carbon nanofibers that were later purified with HNO3. The purification was efficient in removing the Ni metal particles that were at the tip of the carbon nanomaterials (CNMs).
Potencial uso da Artemisia annua na aquicultura
(Universidade Federal de São Carlos, 2021-04-28)
Soares, Michelly Pereira
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Sampaio, Fernanda Garcia
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Jonsson, Claudio Martín
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https://lattes.cnpq.br/7690621646529937
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https://lattes.cnpq.br/1419888510506769
Fish farming in Brazil has shown great growth in recent years, mainly related to the excellent potential of some species grown in intensive production and the great acceptance of these products by the consumer market. The increase and intensification of fish production systems requires high-density cultivation and the adoption of different management technologies, which on the one hand result in excellent production gains, but which, on the other hand, can subject animals to stress demanding greater efficiency of the immune system. With the appearance of different types of diseases, fish farmers increasingly need to use chemotherapy and antibiotics to stem the spread of diseases common to intensified production systems. In addition, antibiotics are used as growth promoters, which generate excellent results, but their use has been increasingly limited for this purpose, as inappropriate or indiscriminate use can have a negative impact on both fish and the environment. In view of this, in recent years, products of natural origin have been studied for their ability to stimulate the immune system and control the main diseases in fish farming. Thus, the objective of this work was to evaluate the use of Artemisia annua, a medicinal plant easily found in Brazil, as an anti-stress agent, immunostimulant, growth promoter, antibacterial and therapeutic. The use of a feed formulation containing supplementation with alcoholic extract of A. annua improves feed conversion, increases growth, improves the immune system and minimizes the stress response of farmed fish, improving resistance to the main bacteria that affect the species. Also, bioactive components of the extract and alcoholic fractions of A. annua have the potential to inhibit growth and eliminate Aeromonas hydrophila, Streptococcus agalactiae and Flavobacterium columnare, and can be applied in the treatment of bacterial infections. The results of this study contribute to the development of bioproducts for use in fish farming, collaborating with the strengthening and consolidation of production, of great economic importance. Therefore, it is hoped with the results generated contribute to the reduction of economic losses due to high mortality rates in fish farming resulting from diseases and to avoid dependence on the use of chemotherapeutic agents and synthetic antibiotics.
Processos de ciclagem de nutrientes em diferentes modelos de restauração
(Universidade Federal de São Carlos, 2021-04-28)
Mariano, Lucas Florêncio
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Silva, Francisca Alcivânia de Melo
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https://lattes.cnpq.br/4122016283592995
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Piña-Rodrigues, Fátima Conceição Márquez
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https://lattes.cnpq.br/1475369713141675
Once considering the growing demand for forest restoration and the search for restoration models that rehabilitate the functionalities of nutrient cycling, this study aims to evaluate the contribution, nutrients and litter decomposition in different spacing and proportion per successional group. The experimental area was installed in 2012 using a partial factorial experimental design with three randomized blocks and 10 treatments with different spacing being: 1 x 0.3 m; 1 x 1 m; 2 x 1 m and 3 x 2 m and the proportions of successional groups by pioneer (P) and non-pioneer (NP) species. Litter collections were carried out between 2018 and 2019, using circular collectors suspended at a height of 1.20 m. After fractionation and quantification of the litter collected, the fraction leaves from the months of the year 2019 was used to determine the nutrient contents. To evaluate the decomposition, litterbags were assembled with a mix of a maximum of 10 grams of dry leaves, installed in July 2019 and distributed in the proportion of three per treatment in each block for a period of 6 months and collected monthly. The results for 6 and 7 years after planting, showed spacing as the most significant treatment for litter input, with 1 x 0.3 m showing the highest values, 8244 Kg ha-1 year-1 in the sixth and 9131 kg ha-1 yr-1 in the seventh year. The content of N, Ca and Mg showed changes between spacings and the content of Ca was the only element that showed changes in proportion by successional group. Nutrient input followed the direction of litter input results, with the exception of P and K. Nutrient accumulation followed the order N>Ca>K>Mg>S>P. Litter decomposition did not show statistical differences between treatments, with the largest constant K and the shortest half-life for 80NP20P (K=0.0027 and T ½ = 265 days) and for 1 x 1 m (K= 0 .0029 and T ½ = 248 days). The decomposition process in the treatments was influenced by the microclimate, with the minimum temperature showing the greatest association with decomposition. The ordering analysis revealed that the groups formed by the smallest spacings showed greater evidence in function of the nutrient input and return to the system, showing the rapid recovery of soil functionalities at the beginning of the forest succession process.
Papeis e desempenho ocupacional de mães de crianças com deficiências
(Universidade Federal de São Carlos, 2021-04-28)
Polezi, Suelen Cristina
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Figueiredo, Mirela de Oliveira
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https://lattes.cnpq.br/3660487766535040
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https://lattes.cnpq.br/9908092552985108
The birth of a child with a disability represents an impact on the family structure. Studies, specifically with mothers of children with disabilities, demonstrate that there is a break in the idealization of the expected child, followed by feelings such as frustration and fear, and a rupture in daily life and in the way of realizing occupational life. The aim of the present study was to investigate changes in the roles and occupational performance of mothers after the birth of their disabled child. This is a cross-sectional descriptive study with a qualitative approach conducted with 05 mothers of children diagnosed by disabilities aged between 03 and 14 years old. For data collection, the Occupational Roles List, the Canadian Occupational Performance Measure (COPM) and a semi-structured interview scrip were applied. The collected data were discussed based on the human occupation paradigm and from the perspective of the Canadian Model of Occupational Performance and Engagement. As a result, it was identified that mothers, shortly after the birth of their child, has changes in their occupational roles as workers, students, hobbies, religious and friends. However, at the present days, mothers started to play the role of volunteers with other mothers who also had children with disability. In relation to occupational performance, considering the birth of a child with a disability, mothers who currently have children aged 3 years old and dependence to perform daily life activities showed impairment in carrying out self-care, leisure and productive occupations, such as paid work, studies, aesthetic care, socializing with friends and religion. On the other hand, mothers whose children were between 6 and 14 years old who had paid work did not report problems in occupational performance, referring to achieving self-care, leisure and productivity. The mothers who reported receiving support and social support from family members, as well as from their own mothers and spouses, were the same ones who did not indicate having problems in occupational performance. It is included, then, that the experience of caring for a child with disability initially impacted the mother’s roles and occupational performance, but mothers who had social support and adapted support, returned playing roles and occupations that were previously abandoned and managed to still have positive learnings.
Poliedros regulares e semirregulares
(Universidade Federal de São Carlos, 2021-04-28)
Pafume, Mateus Rodrigo
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Sampaio, João Carlos Vieira
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https://lattes.cnpq.br/8286887389013685
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https://lattes.cnpq.br/8387532233475956
The subject os this study is a retelling of the Steps I and II of the book “Matem@tica na Pr@tica, Geometria espacial: módulo 2”, by Cláudio Carlos Dias, João Carlos Vieira Sampaio, Marlusa Benedetti da Rosa, Tomás Edson Barros. These modules are about Regular or Semi-regular (archimedean) polyedra, wich are solids obtained through the techniques of truncation or snub. The main objective pf this study is to produce a theoretical material, with historical and philosophical elements about Regular and Semi-regular polyhedra, so it can be used for undergraduate students in Mathematics.
As propriedades espectroscópicas, fotoquímicas, fotofísicas e eletroquímicas do complexo de Ru(II) cis-[Ru(tbbpy)2(4Apy)2]2+, em que tbbpy = 4,4’-ditert-butil-2,2’-bipiridina e 4Apy = 4-Aminopiridina
(Universidade Federal de São Carlos, 2021-04-28)
Rezende, Daniel Victor Alves
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Carlos, Rose Maria
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https://lattes.cnpq.br/1589143355309943
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https://lattes.cnpq.br/1578952128209168
This work involves the synthesis and characterization of the cis-[Ru(tbbpy)2(4Apy)2]2+ complex where tbbpy = 4,4'-di-tert-butyl-2,2'-bipyridine and 4Apy = 4-Aminopyridine, determination of spectroscopic, photochemical and photophysical properties. The characterization by elementary analysis measures (C,H,N) confirmed the minimum proposed formula (theoretical: %C 49.51; %H 5.42; %N 10.04; experimental: %C 49.20; %H 5.95; %N 9.80). The cis-[Ru(tbbpy)2(4Apy)2] 2+ geometry was obtained by hydrogen nuclear magnetic resonance (1H NMR) measurements. The complex presents intense absorption in the UV region with maximum wavelength at 246 nm (E = 3.54x104 mol-1cm-1L), 294 nm (E= 6.11x104 mol-1cm-1L), 332 nm (E = 1.54x104 mol-1cm-1L) and intense absorption in the visible with maximum at 490 nm (E= 9.31x103 mol-1cm-1L). The emission spectrum in CH3CN has a maximum at 658 nm which is independent of the excitation wavelength. The cyclic voltamogram shows a redox pair at 1.08 V and 0.98 V, referring to the oxidation process and reduction of ruthenium. The complex is stable in the solid state and slightly soluble in aqueous medium (pH 2 to 8). The irradiation with continuous light of 450 and 518 nm resulted in the dissociation of the two 4Apy in aqueous medium and in organic solvents and in the suppression of the emission of the complex. The comparison of computational calculations with the experimental data obtained contributed relevantly to the understanding of the photochemical and photophysical properties of the cis-[Ru(tbbpy)2(4Apy)2]2+ complex, observing a satisfactory similarity and compatible information regarding the triplet state of lower energy responsible for the emission, in which it comes from an electronic 3MLCT transition, presenting an E0-0 of 660 nm, similar to the experimental emission observed at 658 nm.
Diagnóstico das condições para implantação da Modelagem da Informação da Construção (BIM) em municípios de pequeno porte
(Universidade Federal de São Carlos, 2021-04-29)
Alves, Thiago Rodrigo de Oliveira
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Serra, Sheyla Mara Baptista
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https://lattes.cnpq.br/8528385567782505
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https://lattes.cnpq.br/1790395000927499
Building Information Modeling (BIM) methodology currently represents one of the main options for modernizing and restructuring design and construction practices for the Architecture, Engineering, Construction and Operations (AECO) sector. To provide more significant savings, efficiency, and transparency to its projects, the Federal Government prepared the National BIM Dissemination Strategy, also known as the BIM-BR Strategy. The first phase aims to apply BIM methodology to develop public projects for architecture and engineering. This study aims to verify the conditions of receptivity and existing infrastructure for implementing BIM by the management of small municipalities, that is, those with a population of fewer than 20 thousand inhabitants. A pilot study of a descriptive and exploratory case study was first carried out to seek validation for the elaborated questionnaire. The survey was carried out with nine small municipalities located in the northwest region of the State of São Paulo, verifying the conditions of receptivity, infrastructure and analyzing professionals' perceptions regarding the possible obstacles to BIM realization. Despite the possible benefits of implementing the BIM methodology, it was lying that several barriers can impede the dissemination process. The professionals' experience, financial factors, staff availability, equipment, and program requirements were some perceived difficulties in introducing the new tools. Finally, it was verified that the assistance of other government instances to carry out investments in the modernization of equipment and systems of small city halls would be crucial for the future dissemination of BIM for this group. Simple initiatives, such as the development of normative instruments, training and qualifications, and the implementation of communication management systems between sectors, can also help to improve BIM's receptivity by small-sized city halls.