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Platforms based on semiconductors for application in quantum computing
(Universidade Federal de São Carlos, 2023-06-02)
Cunha, Iann
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Castelano, Leonardo Kleber
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https://lattes.cnpq.br/1397190485811267
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https://orcid.org/0000-0002-4746-3657
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https://lattes.cnpq.br/7282573279070179
This thesis is composed of three parts. In the first part, a study of transport in semiconductor nanowires is carried out, in which the multichannel scattering occurs in a certain finite region, providing a reentrance in the conductance. This reentrance is analyzed in zero magnetic field configuration for cases where there is a strong spin-orbit coupling and for a structural deformation in the nanowire, where it suffers a localized expansion. Furthermore, both cases are also investigated in the presence of a magnetic field, where the reentrance also appears in higher energy channels. In the second part of this thesis, machine learning is applied to successfully determine physical parameters of two qubits in coupled semiconductor quantum dots, with the aim of locally measuring the qubits and reducing the necessary measurements performed in the laboratory. In the third part of the thesis, the study focuses on the interaction of distant qubits formed by quantum dots. These qubits are modeled by a spin chain with nearest neighbor interactions and the goal is to implement SWAP and CNOT quantum logic gates in this spin network. Finally, by using SWAP gates, it is possible to propagate quantum information along the spin chain. When noise effects are taken into account, there is a relevant difference in the order of application of the logic gates, which leads to an increase or decrease in the effectiveness of the application of quantum gates.
Espaços públicos de lazer e saúde mental em Ribeirão Preto, SP
(Universidade Federal de São Carlos, 2023-06-02)
Duarte, Maria Raquel Barbosa
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Masiero, Érico
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https://lattes.cnpq.br/2691827106518167
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https://orcid.org/0000-0001-8665-335X
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https://lattes.cnpq.br/4822460818474592
Could the city contribute to the promotion of mental health? Would the availability and the quality of public open spaces enable their use for therapeutic purposes? The research objective is to investigate how outdoor recreation spaces can be used in mental health care - based on deinstitutionalization, on restoring community ties, on independence and on the psychosocial inclusion of the person in mental distress. This study aimed to identify different practices in the process of psychosocial rehabilitation held in open spaces; to verify the pros and cons of public open spaces in Ribeirão Preto, SP, Brazil in fostering CAPS users’ autonomy, well-being, and coexistence. The research contributes to the discussions on urban quality focusing on people in psychological distress. To this end, the research method consisted in compiling a history of mental health care facilities in the city since the 1940s until the establishment of the current Psychosocial Care Network. The integration between urban and mental health policies was verified in legislation at the national and local levels. Subsequently, plans and projects aimed at promoting mental health were analyzed. Next, we carried out a systematic review of the literature on therapeutic activities developed in open spaces in the Brazilian context, and the spatial characteristics that favor them. Lastly, leisure spaces around the Psychosocial Care Centers in Ribeirão Preto were evaluated using quali-quantitative criteria. The six criteria are: availability of leisure spaces close to mental health services, accessibility by public transport, pedestrian accessibility, land use, vegetation shading and availability of urban furniture. Information on these criteria was obtained through document analysis and on-site data collection of leisure spaces attributes. Based on the established diagnosis, guidelines related to the spatial dimension of Mental Health were indicated. Eight out of the twenty-one public open spaces studied were considered adequate. The main inadequacies of these places are related to the lack of accessibility by public transport and the absence of adequate urban furniture.
O serviço de convivência e fortalecimento de vínculos para pessoas idosas na assistência social e o período de isolamento devido a pandemia da covid 19
(Universidade Federal de São Carlos, 2023-06-02)
Concentino, Luiz Henrique
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Zazzetta, Marisa Silvana
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https://lattes.cnpq.br/2350656835896699
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https://orcid.org/0000-0001-6544-767X
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https://lattes.cnpq.br/0945601633029600
The descriptive and exploratory research was carried out in Social Assistance Reference Centers (CRAS) of a city in the interior of the state of São Paulo. The CRAS performs basic social protection services in the territory, offers among the services offered to the population, opportunity of coexistence for people through the Service of Coexistence and Strengthening of Ties. The target audience of the research are elderly people who participated in the Service of Coexistence and Strengthening of Bonds. The objective is to describe the perception of elderly people about participation in the Service of Coexistence and Strengthening of Bonds, at the moment before the Covid-19 pandemic, considering strengths and challenges of face-to-face experiences, as well as verifying the existence of relationships between sociodemographic variables, mood and social support in social isolation in the Covid-19 pandemic. The theoretical framework used is based on historical-dialectical materialism. Data collection was performed with a sample of 30 elderly individuals in person. For the interview, a semi-structured questionnaire was used and two screening instruments were applied: the Minimum Map of Elderly Relationships (MMRI) and the Geriatric Depression Scale (GDS). The results of the GDS showed that 26.7% presented signs of depressive symptoms and 73.3% did not present depressive signs. There was a moderate correlation between those who showed signs of depressive symptoms and younger elderly. It can also be identified that elderly who indicated perception of medium/low social support in the MMRI in emotional function (often), showed signs of mild depressive symptoms in their majority. It can be concluded that public policies offered to the elderly population, such as social groups, are spaces that offer social support, in addition to providing experiences in positive and pleasurable activities and thus end up benefiting mental health.
Estigma relacionado à Tuberculose: aplicação da Escala Tuberculosis-Related Stigma
(Universidade Federal de São Carlos, 2023-06-02)
Lucenti, Laís Xavier de
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Protti-Zanatta, Simone Teresinha
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https://lattes.cnpq.br/6772128930979370
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https://lattes.cnpq.br/3061196869852347
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https://orcid.org/0009-0007-6920-6970
Tuberculosis is a serious public health problem worldwide, it is estimated that in 2021, in the world, 10.6 million people will develop TB and 1.4 million will die from the disease. There are factors that interfere with adherence to treatment, such as the length of treatment being six months, non-acceptance of the disease, resistance to follow-up at health units, incorrect use of medications, and social stigma. The objective of this study was to investigate the stigma associated with tuberculosis, from the perspectives of the community and the patient in relation to the disease. This is a cross-sectional study with a quantitative approach, carried out in the city of São Paulo, in Basic Health Units. The Tuberculosis-Related Stigma scale was applied to 69 individuals with pulmonary tuberculosis who had been on Directly Observed Treatment for more than 15 days. In the first stage of the study, we carried out a bibliographical survey to highlight the need to study tuberculosis and the stigma surrounding tuberculosis, and the second part of the study presents the statistical analysis of the collected data. The results indicate that of the 69 individuals, 46 (66.7%) agree that people prefer not to have someone with TB living in their neighborhood, 37 (53.6%) agree that the population keeps distance from people with TB and think that they cause disgust, 38 (55.1%) of the subjects agree that people do not want people with TB to play with their children, and do not want to talk to someone who has Tuberculosis, 29 (42.0%) agree that people with TB keeps distance from others to avoid transmission of the bacteria, 32 (46.4%) agree that people with TB feel hurt by the way others react when they know they have TB, and 29 (42.0%) strongly agree that people with TB choose carefully who they tell about their disease. The statistical analysis of data from the application of the scale shows that the scale measures the stigma associated with tuberculosis, which is associated with fear and prejudice.
Diretrizes para a educação ambiental e o plano plurianual de gestão da Etec de Ibaté (SP)
(Universidade Federal de São Carlos, 2023-06-02)
Silva, Shirlei Gomes da
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Costa, Luzia Sigoli Fernandes
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https://lattes.cnpq.br/8110248272001369
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https://orcid.org/0000-0001-8530-4000
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https://lattes.cnpq.br/6360424917459361
The National Common Curricular Base (BNCC), the National Environmental Education Policy (PNEA), and the 2030 Agenda are documents that have pointed towards contemporary good educational practices. In this regard, the aim of this study was to analyze to what extent the Plurianual Management Plan (PPG) of the State Technical School (ETEC) in Ibaté-SP encompasses pedagogical and technical-scientific aspects in favor of Environmental Education (EE) based on reference documents. To achieve this, the study conducts a specific survey of literature convergence, identifies favorable aspects of science, technology, and pedagogical practices in EE, and analyzes recommendations from the BNCC, PNEA, and 2030 Agenda related to the practices developed in the Political-Pedagogical Project (PPP) and PPG. Methodologically, this study begins with scientific and academic investigation, alongside a thorough analysis of the listed documents. This approach reveals convergence and the presence of positive aspects among the documents, including the use of various technical approaches. This analysis emphasizes the need to strengthen EE both in theoretical and practical realms in the daily school context, recognizing its significance in cultivating environmental awareness and shaping active citizens in environmental advocacy. By presenting this analysis, the study aims to contribute to the enhancement of education quality in the school environment and to promote sustainable practices beyond the school community. Furthermore, it aims to validate the construction of new knowledge in Science, Technology, and Society (STS) through the identification of potential gaps and challenges in the process, stimulating reflection on a more conscious, critical, and sustainability-committed organizational culture.
Effect of measurement errors on double sampling S² control chart
(Universidade Federal de São Carlos, 2023-06-02)
Couto, Giselle Elias
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Oprime, Pedro Carlos
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https://lattes.cnpq.br/9291517431456908
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https://orcid.org/0000-0002-6213-2223
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https://lattes.cnpq.br/3061782528251400
Product quality can be understood as inversely proportional to the variability in its production process. The control chart is a well-established statistical tool for quantifying and analyzing this process' variability based on observed information about some of its measurable characteristics. To simplify the control chart application, some researchers and users assume that the data used to evaluate the process is accurate. However, since the construction and use of control charts are based on measurement and no measurement system is perfect, errors in the measured data are inevitable. Recent studies indicate that the Double Sampling control chart can be an alternative for process monitoring. However, there is still a lack of studies that investigate the impact of measurement errors on Double Sampling control chart to monitor process variability. Based on the preceding, the present work aims to study how the performance of the Double Sampling S² control chart is affected by the presence of measurement errors. Initially, a systematic review of the literature is proposed in order to explore studies on the subject. The main methodology of the research is mathematical modeling and simulation. A design modeling for considering measurement errors in the Double Sampling S² control chart is proposed. The impact on the average run length (ARL) for different measurement error values is verified through simulation. Using a genetic algorithm, we propose an optimization study of the Double Sampling S² control chart for operation with measurement errors. Finally, a simulation example is presented to verify using the Double Sampling S² chart with the optimized parameters. The results indicate that measurement error deteriorates the performance of the Double Sampling S² chart, and the impact rises as measurement error increases. The simulation analysis showed the advantage of using the optimized Double Sampling S² chart, particularly for larger measurement errors. The present study contributes to the practical application knowledge of the Double Sampling S² control chart, providing parameters for its use in the presence of measurement errors.
Estudo in vitro da inativação fotodinâmica dos microrganismos causadores da esporotricose
(Universidade Federal de São Carlos, 2023-06-02)
Rocha, Amanda Regina
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Bagnato, Vanderlei Salvador
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https://lattes.cnpq.br/4947860249518663
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https://orcid.org/0000-0003-4833-239X
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https://lattes.cnpq.br/6338455111772193
Sporotrichosis is a zoonosis caused by Sporothrix spp., a fungus that causes a subcutaneous mycosis which can become systemic in immunocompromised individuals. Conventional treatment is based on the prolonged use of antifungals, which can cause many side effects and, to improve on this, it is necessary to study efficient alternatives. The present study aims to show the effectiveness of Antimicrobial Photodynamic Therapy (aPDT) using curcumin as a photosensitizer in the control of S. brasiliensis and S. schenckii, and Candida albicans as a comparative parameter for results. In addition to showing the best parameters for combining aPDT with traditional antifungals against these microorganisms. The fungi were illuminated via a Biotable® (lighting device with 24 evenly distributed LEDs) at a wavelength of 450 nm and a light dose of 31.5 J/cm² with photosensitizer concentrations ranging from 0.75 to 150 μg/mL of curcumin. After determining the Minimum Inhibitory Concentration (MIC) of the itraconazole, ketoconazole and potassium iodide, antifungal therapy was combined with aPDT to verify whether subinhibitory doses of these drugs would be able to eliminate Sporothrix spp. Concentrations of 1.5 to 15 μg/mL of curcumin were used, and the dosages of the drugs reducing the dose from half of the MIC values obtained. An efficient protocol for the inactivation of all microorganisms studied was found with a single application of aPDT and with aPDT combined with conventional treatment. The best results were obtained with aPDT application prior to antifungals, causing the total elimination of the Sporothrix spp. in addition to C. albicans, even with underdoses of both the photosensitizer and antifungal drugs. To better understand the impact of the order of therapies, studies were made of the absorption spectrum of individual compounds and how the combination could influence the dynamics of photobleaching of these compounds. The present study suggests that aPDT using curcumin as a photosensitizer may be a promising alternative to combat sporotrichosis. This treatment would be especially effective in veterinary medicine to be applied in cats as an individual therapy or as a coadjuvant. In the combination of therapies, in vitro protocols result in a synergistic effect in the inactivation of microorganisms. This could improve the treatment of the disease, with a reduction in both the recuperation time and dosage of drugs used, significant benefits of this approach are overall cost reductions and lessened side effects due to preventing the prolonged use of antifungals, while achieving an effective overall treatment.
AMARU - Redes de Colaboração em Terapia Ocupacional na América Latina
(Universidade Federal de São Carlos, 2023-06-02)
Passoni, Thayla Gabriele Pereira
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Silva, Carla Regina
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https://lattes.cnpq.br/6417501858864106
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https://orcid.org/0000-0002-7079-8340
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https://lattes.cnpq.br/6072768661908620
The present work aims to present the analyzes and discussions carried out by the research “AMARU - Collaboration Networks in Occupational Therapy in Latin America”. Its about a documentary, quantitative-qualitative analysis, based on the mapping carried out by AMARU Network, through the online form on the Google Forms® platform, which has seven different sections, aimed at researchers/occupational therapists from America Latin. The objective of the research was to analyze and discuss the organization of forms of networks of collaboration and dissemination of knowledge, practices and projects among therapists Occupational. The first stage of the research was the selection and categorization of the responses of the mapping, seeking to identify information on the use of information sources, networks of work, access to journals and formation of collaboration networks, among other relevant information. The second stage consisted of the primary analysis of the responses, division into thematic axes and interpretation of data derived from the mapping. The search collected 108 responses. An important part of occupational therapists claim to develop group searches (92.6%). The most used sources of information are scientific articles and books on Occupational Therapy and other areas, from Latin America and Anglophone countries. The three most accessed Latin American periodicals are: the “Cadernos Brasileiros de Occupational Therapy” (71%); the “Chilean Journal of Occupational Therapy” (56%); and the “Magazine Brazilian Interinstitutional Association for Occupational Therapy – REVISBRATO” (43%). The main difficulties found for the dissemination of knowledge/work are: the organization and daily work time (66%), publishing in another language (64%) and the financing of publications (61%). All respondents are interested in joining the AMARU Network. You Latin American journals have been important disseminators of knowledge for researchers in the area, also considering the limits of the sample.
Projeto de uma fonte cc controlada de alta tensão
(Universidade Federal de São Carlos, 2023-06-04)
Farhat, Heitor
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Gonçalves, Amilcar Flamarion Querubini
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https://lattes.cnpq.br/1742343294433199
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https://orcid.org/0000-0003-0280-9711
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https://lattes.cnpq.br/8084456085434281
This work presents the design of a high-voltage direct current (DC) power supply, intended for plasma generation and applications in metallic deposition processes on semiconductor materials, as well as research in the field of microelectronics. The application of metallic thin films through cathodic sputtering is widely used in various fields, including industrial part coating, cosmetic and decorative finishes, food packaging, jewelry, photovoltaic systems, and academic research. To address this need, a circuit was proposed consisting of an uncontrolled rectifier, followed by a controlled inverter with PWM filtering, a 60 Hz step-up transformer for high voltage, and an uncontrolled rectifier at the transformer’s secondary. This work presents the schematic diagram and printed circuit board (PCB) design of the power supply, the implemented control strategy, and simulation results analyzing the system’s performance. The simulations demonstrated that the system possesses the required characteristics for the sputtering process, operating safely under varying voltage levels and load conditions.
Construindo o turismo de base comunitária na Ilha das Couves em Ubatuba, SP (Brasil)
(Universidade Federal de São Carlos, 2023-06-05)
Rosa, Thais Felipe
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Alfonso, Maria Josefa Pastor
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https://orcid.org/0000-0001-8820-8073
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Costa, Luzia Sigoli Fernandes
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https://lattes.cnpq.br/8110248272001369
This research investigated the socioeconomic practice of tourism associated with the conservation of cultural and natural heritage on Ilha das Couves, located in Ubatuba, on the northern coast of São Paulo, Brazil. The focus was on Community- Based Tourism, which emphasizes the active participation of traditional communities in planning more sustainable tourism activities. The study prioritized listening to the Caiçara community of Vila de Picinguaba, a pioneer in the construction and organization of this tourism model on Ilha das Couves, as well as other stakeholders involved. The island has faced problems arising from mass tourism since 2016, which resulted in the degradation of its natural and cultural heritage. These challenges began to be resolved in 2019, with the adoption of normative ordinances prepared by institutions such as the Forestry Foundation, the APA Marinha, the Federal Public Prosecutor's Office of Caraguatatuba, the Traditional Communities Forum, and the local community involved in tourism itself. The ordinances (315/2019, 323/2020, 328/2021, 350/2022, 387/2023) established guidelines for controlling and organizing the flow of tourists, as well as for the sustainable use of space. Based on these measures, the Caiçara community of Vila de Picinguaba, together with the Traditional Communities Forum, structured proposals for Community- Based Tourism for the Island. At the time this research was carried out, the organization had 52 members, 38 of whom were boatmen and 14 professionals that were majority women who worked in tourist reception. The research used qualitative methods, including 66 semi-structured interviews — 21 conducted online and 45 in person — with community leaders, members of local communities, representatives of public and private institutions, tourists and others involved in Community-Based Tourism. In addition, four technical visits were made to the region to collect data on site, following the guidelines of the World Health Organization and respecting the interests of local communities. Through a literature review and interviews with the various stakeholders in the network, it was found that Community-Based Tourism, combined with monitoring the island's support capacity, was essential to promoting sustainable tourism development. This model generated cooperation and motivation around common goals. It is important to note that each community has unique characteristics and must independently define the best way to implement its Community-Based Tourism itinerary, considering that this process is gradual and requires support from municipal, state and federal government spheres.
Os Limites da BNCC para o Ensino de Ciências a partir da experiência da práxis autêntica freireana.
(Universidade Federal de São Carlos, 2023-06-05)
Simon, Gimena Andressa Venturini
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Silva, Antonio Fernando Gouvêa da
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https://lattes.cnpq.br/9621931288117213
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https://orcid.org/0000-0002-8915-9952
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https://lattes.cnpq.br/0630944062120274
Science teaching has a history of approaches that, influenced by Brazilian pedagogical trends, differ in their curricular conceptions, many of which are traditional and banking, which end up distancing, relativizing and dichotomizing students' scientific knowledge. And opposition to progressive practices whose principle is based on the subjects' worldview. The National Common Curricular Base - BNCC presents a proposal aligned with a liberal perspective, which suggests contents and strategies based on a pre-established cut of reality. With these perspectives, this research comes to question to what extent, the BNCC as a curricular proposal for science teaching, contemplates the concrete experiences of the students, including their contradictory world views and participation in the construction of an authentic praxis? We sought to synthesize connecting principles between Scientific and Technological Education, Curriculum and the Critical Freirean Perspective and Walter Benjamin's concept of Authentic Experience. As a methodological process, a qualitative and critical analysis of the discourse present in the BNCC document was carried out, in the area of Science Teaching in the Final Years of Elementary School. As a results, it was noted that there is not, in fact, a refusal of the subjects' worldview, but there is a cut of reality that does not necessarily come from the subjects, since they are pre-defined in competences and structural abilities throughout of learning cycles and based on objects of knowledge that organize the pedagogical proposal, making the experience of knowledge construction not formative, but reproductive. It is impoverished in experience and authenticity.
Redes socioassistenciais e atendimento à pessoa idosa: uma análise da proteção social em um município de médio porte
(Universidade Federal de São Carlos, 2023-06-06)
Campos, Michelle de Cassia
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Zazzetta, Marisa Silvana
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https://lattes.cnpq.br/2350656835896699
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https://orcid.org/0000-0001-6544-767X
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https://lattes.cnpq.br/9326639417380399
Longevity brings important challenges for society, especially with regard to ensuring a better quality of life for the older adults. The social and family support network are proven relevant factors for reducing the risk of frailty and mortality. This study aimed to analyze the relationship between sociodemographic conditions, family structure and social support networks and to analyze the perception, care, reception offered by social assistance equipment and the representativeness of these services for the older adults, in a municipality of the state of Minas Gerais. This is a cross-sectional, observational, descriptive study with a quantitative and qualitative approach, based on the assumptions of the concomitant mixed method of investigation. The study included 80 people aged 60 years or over, of both sexes, users of the social assistance services of the CRAS and CREAS in the municipality. For data collection, semi-structured interviews were carried out in face-to-face format, and the following instruments were applied: genogram, ecomap and Tilburg frailty indicator and minimal map of relationships. According to the results obtained, the highest percentage of participants are female aged between 60 and 70 years, white, married, with low education, retired, with income up to one minimum wage. The results show us that 78.75% of respondents have children and 47.50% live in households with up to two members. The highest percentage of respondents has frailty and the physical domain stands out; have a close relationship with people who live in the same home and the highest density of the support network is centered on the family, it was found that although all respondents are users of social assistance services and responded positively when asked about reception and the representativeness of these services, does not identify them as a support network. It is concluded, therefore, that it is necessary to advance in the social support offered to the older adults, to broaden our perception of their physical, emotional and psychological needs. Public policies aimed at this population urgently need to be reformulated so that longevity also means quality of life.
Contribuição de lipídios no perfil diferencial de organelas de embriões bovinos produzidos in vitro
(Universidade Federal de São Carlos, 2023-06-06)
Annes, Kelly
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Sudano, Mateus
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https://lattes.cnpq.br/7831568807365858
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https://lattes.cnpq.br/1945811068525845
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https://orcid.org/0000-0002-2942-4865
Programa gestão nota 10: implicações para a gestão democrática na rede estadual de educação do Piauí
(Universidade Federal de São Carlos, 2023-06-06)
Araújo, Rafaela de Morais
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Ramos, Géssica Priscila
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https://lattes.cnpq.br/2573340489166336
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https://orcid.org/0000-0002-1254-4510
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https://lattes.cnpq.br/5308403060464579
This research problematizes the public-private management in education, based on the partnership signed between the Department of Education of the State of Piauí and the Ayrton Senna Institute. Its central objective is to analyze the adherence to the Management Program Note 10 - PGN10 by the referred state, debating the implications of the same for the democratic management and, consequently, for the management of the public school, from 2008 to 2017 – period of its validity in the state. The specific objectives sought: to analyze the relationship established between the public and the private, from the context of the State Reform in Brazil and its reflexes for the use of public-private partnership as a new educational management tool; to analyze the context of creation, the structure, the functioning and the political and ideological foundations of the Ayrton Senna Institute, identifying the school management model in its Management Program Note 10; specify the school management model of the State Public Education Network of Piauí defined in local legislation and regulations. To carry out this study, an investigation of qualitative approach was defined, based on documentary research with bibliographic support. This was accomplished through the use of content categories (Management Model and Mechanisms; Training of Managers; Provision of Director Position) as analysis tools. To achieve the objectives, we analyzed the documents made available by the Ayrton Senna Institute to the partner schools (site materials, manuals, spreadsheets, forms, printed texts), as well as important documents in the configuration of the educational policy of Piauí. Authors such as: Adrião (2001; 2008; 2018), Caetano; Peroni (2022), Luz (2009); Silva (2019) and Paro (2002; 2011; 2015). Regarding the category Management Model and Mechanisms, the data pointed to the impact of the Program on local democratic management, achieved by the private management model. With regard to the category Training of Managers, it was observed the use of the strategy of creation of the leader, as a supposed "protagonist" of civil society, devaluing the role of the school manager in the educational context. With regard to the category Provision of Director Positions, there was a retreat in democratic processes and the advancement and expansion of partnerships with the private sector, intensifying control over public educational management, in the name of the discourse built on "efficiency and management by results" strengthened by the Management Program Note 10. From these results, it was found a greater centralization in the processes of choice for school directors implemented by SEDUC-PI, causing changes in the scope of the management of the state education network, minimizing the autonomy of the school community. Therefore, this Program had a significant impact on the management of education in Piauí, creating obstacles to the promotion of democratic management in its education network.
Análise geológica e ambiental dos processos erosivos em Aparecida de Goiânia (GO)
(Universidade Federal de São Carlos, 2023-06-06)
Fernandes, Rodrigo Luiz Gallo
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Masiero, Érico
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https://lattes.cnpq.br/2691827106518167
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Ferreira, Marcilene Dantas
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https://lattes.cnpq.br/1557946634389893
The conceptions of urban territorial planning encompass the behavior of the soil, the dynamics of fluvial and rainfall waters, and the proposition of measures for environmental preservation and control of negative impacts on urban occupation. Erosion can be considered the main consequence of misuse and misunderstanding of urban occupation, especially in urban centers, causing problems such as drainage siltation, poor water quality, land loss, among others. The main objective of this study was the environmental geological survey of erosive problems in the municipality of Aparecida de Goiânia, in the state of Goiás, Brazil. Specifically, spatial and temporal analysis of erosive processes, inventory mapping of erosive processes, environmental geological characterization of the study area, land use and occupation in the municipality, and analysis of relevant legislation were conducted. Methodologically, literature surveys, photointerpretation, erosion monitoring, and geological material characterization were performed. Existing data from previous studies and photointerpretation were used for the inventory of erosive features. Monitoring of selected erosions was carried out from April 2022 to February 2023, along with photographic records and geological material characterization. Regarding legislation, despite the municipality having strict laws regarding occupation near streams and springs, a lack of enforcement by the public authorities was noticed, allowing occupation in these areas. The study showed that erosive features occur on highly weathered shale materials, which give rise to easily erodible saprolites. The analysis of erosive feature inventories revealed that the behavior of erosive processes varied over the years, in accordance with urbanization evolution. The increase in impermeability and territorial occupation, which occurred without the installation of necessary basic infrastructure, led to a change in the development of erosive processes, observed from the year 2017. It was concluded that the dynamics of erosive processes in the municipality were adequately characterized, especially regarding its relationship with the urbanization process. On the other hand, there was a difficulty in reversing this situation, which may be due to technical and/or political issues, as municipal interventions for erosion control and recovery have proved to be ineffective.
Investigação dos mecanismos de remoção de material de insertos de metal duro de diferentes classes durante a retificação
(Universidade Federal de São Carlos, 2023-06-07)
Silva, Bruna Oliveira da
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Ventura, Carlos Eiji Hirata
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https://lattes.cnpq.br/1689198421096127
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https://orcid.org/0000-0002-3370-2979
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https://lattes.cnpq.br/3457124059622046
After pressing and sintering processes, cutting inserts must be ground in order to obtain the necessary surface finish and tolerances for their application in machining operations. An appropriate process design requires a detailed investigation of the material removal mechanisms, in order not only to obtain a good surface finish, but also an efficient process. Within this context, an investigation of the material removal mechanisms associated with the analysis of process forces and specific energy during plunge-face grinding of cemented tungsten carbide cutting inserts of different grades (K10, P10, M10, and NbC-Ni) was carried out. All the studied materials showed, in general and with similar trends, increased values of the grinding force components and a reduction of specific energy with higher values of average single grain chip thickness. In addition, a very similar critical single grain chip thickness of 0.25 μm was obtained and changes in the material removal mechanism from ductile to brittle mode could be observed close to this value. The cemented carbide ISO grade K10 presented better results than those obtained for the other materials with regard to specific energy, surface and edge quality. No relationships were found between the results obtained in the performed scratching tests and those generated through grinding.
Sistema de visão computacional para reconhecimento e classificação de padrões de famílias de plantas invasoras
(Universidade Federal de São Carlos, 2023-06-08)
Moreno, Bruno Moraes
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Cruvinel, Paulo Estevão
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https://lattes.cnpq.br/7924553462118511
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https://lattes.cnpq.br/2913802096715689
Computer Vision, in addition to involving pattern recognition and object classification techniques, has been characterized as an emerging field of fundamental importance in the context of intelligent computing. Its application has involved different areas of knowledge, which includes the agricultural area. Since its beginnings, which involved the interpretation of manuscripts and typed texts, it currently plays a fundamental role in the production of food and sustainable energy. This research seeks to use and develop Computer Vision for the identification and localized recognition of invasive plants, which require control in order to properly develop agricultural crops. With this in perspective, algorithms and concepts of Computer Vision and Internet of Things can be used to help with this task. Then, the construction of a stereo system capable of acquiring digital images in the field, obtaining depth information, segmenting, extracting features and classifying plants through supervised machine learning methods is carried out. Thus, the recognition of patterns of invasive plant families can help in the rational use of inputs and minimize environmental impacts, entering the list of precision agriculture technologies. For the development of the system, embedded control hardware and software were validated, allowing real-time action and wireless communication. Signal and image processing actions were applied to two databases referring to crops that are impacted by the presence of invasive plants, maize (Zea mays) and groundnut (Arachis hypogaea). For the pre-processing step, camera calibration parameters were obtained for stereo image rectification. For the segmentation step, thresholding in the HSV color space and morphological operations were performed. Accuracy and overlapping area metrics were used to validate the process. The disparity maps were obtained from the evaluation of local and semi-global matching algorithms. For the feature extraction step, descriptors of Local Binary Patterns and Haralick moments were applied. For the classification of invasive plants, classifiers based on Support Vector Machines were used. The developed system proved to be capable of generating depth information and plant classification, which contributes to decision-making and the application of different input rates. The results obtained prove the effectiveness of the method developed for recognition, qualification and classification for decision support in the control of families of invasive plants.
Pós-anarquismo e governamentalidade: a experiência da resistência antineoliberal no chile em 2019.
(Universidade Federal de São Carlos, 2023-06-09)
Provasi Freitas, Rômulo
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Tarábola, Felipe de Souza
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https://lattes.cnpq.br/1607155996690149
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https://lattes.cnpq.br/6089578483336057
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https://orcid.org/0000-0002-1103-800X
This research undertakes a bibliographic analysis and theoretical tensioning, emphasizing the importance of post-statist strategies in the contemporary global scenario. By avoiding a direct and violent confrontation with the established power, these strategies favor free experimentation focused on constructing new forms of sociability. The investigation delves into current forms of activism, under a Foucauldian perspective and in dialogue with post-anarchism against neoliberal governmentality. Based on Foucault's interpretation of Clausewitz's aphorism, the study portrays politics as a constant war in today's capitalism. Chile, as the first laboratory of neoliberalism during the Pinochet dictatorship, is the central focus of the research. The 2019 social uprising in the country, resulting from the scars of this period, exemplifies recent collective struggles. The study highlights individual resistance through libertarian practices, which manage to postpone or avoid detection by the dominant power. These intense and brief uprisings emerge as a contemporary resistance tactic against the authoritarian direction of neoliberalism and its use of bio-necropower.
Síntese de catalisadores básicos na presença de surfactantes hexadeciltrimetilamônio
(Universidade Federal de São Carlos, 2023-06-12)
Assis, Flávio Morais de
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Cardoso, Dilson
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https://lattes.cnpq.br/2462847535959232
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https://lattes.cnpq.br/9975335461547244
The synthesis of two basic catalysts — CTA-MCM-41 and ZIF-8 — were studied in the presence of the surfactant hexadecyltrimethylammonium bromide (CTAB), which forms micelles in aqueous dispersions. The catalysts were characterized by X-Ray Diffraction, Thermogravimetry, Electron Microscopy, N2¬ Physisorption, Dynamic Light Scattering, Nuclear Magnetic Resonance etc.; and were tested in Knoevenagel condensation and transesterification reactions. It was demonstrated that CTAB micelles are particularly sensitive to the presence of added anions and can be morphologically altered, making the synthesis of CTA MCM-41 difficult, decreasing the number of its catalytic sites and, consequently, decreasing its catalytic activity in transesterification reaction. The use of CTAB in the synthesis of ZIF-8, in turn, causes a decrease in particle size and leads to the formation of nanosized particles. Furthermore, together with the amino acid L Histidine, it favors the formation of crystalline defect and facilitates agglomeration. ZIF-8 proved to be a promising catalyst in alkaline reactions, being slightly more active than CTA-MCM-41.
Potencial utilização de areia de fundição na construção civil: um estudo de caso para a cidade de São Carlos - SP
(Universidade Federal de São Carlos, 2023-06-13)
Carassato, Douglas Trofino
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Otani, Lucas Barcelos
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https://lattes.cnpq.br/2519980413159984
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https://orcid.org/0000-0002-2831-2335
The general objective of the research was to understand the importance of using foundry sand in civil construction. The specific objectives of this work were: to discuss environmental sustainability; explain the importance of conscious use of natural resources and clean technologies; explain the correct management and reduction of waste; identify the importance of using foundry sand in civil construction. The methodological procedure used in this research is a descriptive qualitative bibliographic review, since it is supported by a theoretical review. Once the research objectives were defined, the collection of information began based on the study of national and international bibliographies. A case study for the JC Metals foundry, in São Carlos, was carried out in order to verify if there is a possibility and feasibility of reusing the sand discarded by the company, based on the results observed in the bibliographic review carried out throughout the text. It was concluded that the reuse of discarded foundry sand showed potential for its use in concrete and other areas, provided that a chemical analysis demonstrated that there would be no environmental risk, so the construction sector could easily absorb this residue. Cost calculations also showed that there could be savings if JC Metals donated its sand to concrete plants located nearby, thus reducing the cost of disposal in landfills. Although many states have developed regulations on reuse for industrial byproducts, large amounts of smelter byproducts are still being landfilled across the planet. However, reuse of foundry products is increasing in a variety of areas, including the highway and construction industries.