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Reliability analysis of repairable systems considering unobserved heterogeneity and competing risks
(Universidade Federal de São Carlos, 2023-10-09)
Brito, Éder Silva de
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Tomazella, Vera Lucia Damasceno
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https://lattes.cnpq.br/8870556978317000
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https://orcid.org/0000-0002-6780-2089
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Louzada Neto, Francisco
In repairable systems, the failure process defined by the failure intensity function can be impacted by three crucial characteristics: the type of repair performed after the failures occur, the underlying cause of the failure (competing risks) and the presence of unobservable factors acting on each failure time or on the system as a whole (unobserved heterogeneity). In particular, unobserved heterogeneity can be modeled by frailty models, well known in the reliability literature. However, the majority of existing studies in this domain assume only minimal repairs after failures, which is a highly restrictive assumption and not always applicable. There is, therefore, a theoretical gap to be explored encompassing frailty models that consider systems subject to both perfect and imperfect repairs and still subject to competing risks. The primary objective of this work is to present new parametric univariate and shared frailty models for multiple repairable systems, considering different types of repairs and a competing risks framework. These proposed models extend and generalize those already existing in the literature, as they account for perfect repairs and all possible failure memories within both the ARA$_m$ and ARI$_m$ classes of imperfect repairs. In this sense, they are models capable of simultaneously identifying the effect of the repairs actions and the presence of unobserved heterogeneity among failure times or among the systems under analysis. This characteristic holds substantial relevance in real-world situations, as a deeper understanding of the system's failure process can lead to improved preventive maintenance policies and reduced repair-related costs. In all proposed models, we assume that the initial failure intensity follows a Power Law Process and that the parametric frailty terms associated with failure times or systems follow a Gamma distribution. We employ a frequentist approach to construct the likelihood function for each model and suggest numerical methods for obtaining maximum likelihood estimators and their corresponding asymptotic confidence intervals. Additionally, we propose the use of Bayesian methodologies based on Markov Chain Monte Carlo algorithms as an alternative to the frequentist method. Simulation studies are conducted for each proposed model, and, finally, the methods presented are applied to real datasets.
O território usado e a saúde nas cidades pequenas: um estudo de caso sobre o Departamento Regional de Saúde de Sorocaba entre 2008 e 2018
(Universidade Federal de São Carlos, 2023-10-09)
Pinto, Ronaldo Ramos
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Burgos, Rosalina
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https://lattes.cnpq.br/0430255108623706
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Silva, Edelci Nunes da
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https://lattes.cnpq.br/7229161630393268
Health has always been an extremely researched topic in various fields of knowledge. Among them, Geography of Health has sought to work on the relationship of health with the environment. This research follows the same line, as it sought to understand the distribution of hospitals by place of residence in the small towns of the Regional Department of Health of Sorocaba (DRS) and to compare them with the territory uses existing in these cities. The work was based mainly on the concept of territory used. In the analysis of the 35 small cities that fall within the present proposal, it was found that those included in the Sorocaba Metropolitan Region have greater influence on the industrial dynamics and have lower rates of internment. By contrast, cities that are not in the metropolitan dynamics have been characterized by a dynamic of the uses of the territory focused on the area of services and in the field of agricultural production and lead the ranking in the number of hospitals.
Planejamento da paisagem urbana visando a implantação de corredor ecológico entre os dois maiores fragmentos florestais do município de Campinas, a Mata de Santa Genebra e a Mata Ribeirão Cachoeira
(Universidade Federal de São Carlos, 2023-10-09)
Martins, Sabrina Kelly Batista
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Toppa, Rogério Hartung
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https://lattes.cnpq.br/0673898572494729
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https://orcid.org/0000-0002-1637-2840
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Martines, Marcos Roberto
Forests in the Atlantic Forest biome are increasingly rare, due to some degration factors that affect forest areas, such as, the uncontrolled urban areas expansion, agricultural and industrial activities, illegal deforestation, animal trafficking and the introduction of exotic species. One of the strategies to reduce the effects of fragmentation, increase the availability of resources and maintain ecological processes is to increase landscape connectivity through recovery actions, aiming to facilitate the flow of organisms among the remnants. Thus, the present study aims to plan the landscape in order to support the implementation of an ecological corridor among the two largest forest remnants of the Municipality of Campinas, the Area of Relevant Ecological Interest Mata de Santa Genebra and the Mata do Ribeirão Cachoeira. Land cover and usage mapping was carried out through visual interpretation of satellite images at a scale of 1:5.000, with the survey being carried out at a scale of 1:2,500, which resulted in a classification of 18 use classes. The species Puma concolor (cougar) was chosen as the target species for developing a connectivity scenario. To construct the corridor proposal, a buffer of 50 meters was created on each side of the chosen connectivity lines, totalizing 100 meters in width. The proposed corridor has an area of 248.86 ha, and taking into consideration the area of the priority remnants that are connected by it, the area adds up to a total of 1.783,49 ha. Validation of the corridor was carried out using trap cameras installed at 5 points along the proposed corridor, with the main species recorded being Puma concolor, Cuniculus paca and Caluromys philander.
Processos de subjetivação no discurso religioso de matriz africana em textos de Jorge Amado
(Universidade Federal de São Carlos, 2023-10-09)
Castejon, Mariângela
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Dinis, Nilson Fernandes
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https://lattes.cnpq.br/9901790534758296
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https://orcid.org/0000-0002-8596-1577
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https://lattes.cnpq.br/0655481467765550
This work starts from the foundation that there are educational processes in religious discourse. In this way, we consider that teaching and learning are made possible by rituals, actions, symbolization and meanings of identity, cultural and historical-social processes that permeate literary discursivity. Also, that religious discursive formations are organized and are present in literary discursivity, constituting meanings in the movements in and of history, in the composition of the subjects of the discourse and their identities. Therefore, the purpose of this study is to analyze, through subjectivation and objectification practices, the subjectivities that involve the voices that emerge in the religious discourse of African origin in the works Jubiabá, Mar morto and Tenda dos Milagres, by Jorge Amado, specifically in the terreiros de Candomblé and places of residence of the characters described in the mentioned works. To do so, we adopted discourse analysis procedures from the Foucaultian perspective, featuring a qualitative methodology, based on a proposal by Rosa Maria Bueno Fisher, through our analyses, we were able to verify that the silencing and subjectivities produced in the communities described are marks of historicity that flow and underline resistances and struggles that preserve values and demarcate ethnic, cultural statements, manifestations of faith and belonging of the subjects characters of the Amado’s literary works, starting from four different perspectives: educational processes, socialpolitical, female profiles and religiosity.
Surdez em linhas de fuga: políticas de subjetividades outras na educação inclusiva
(Universidade Federal de São Carlos, 2023-10-10)
Monti, Luísa Leôncio
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Martins, Vanessa Regina de Oliveira
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https://lattes.cnpq.br/4768682330164550
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https://orcid.org/0000-0003-3170-293X
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https://lattes.cnpq.br/3519999475085077
The various obstacles imposed on the implementation of the inclusive education have made its effective implementation impossible. As a thesis, I assume that the subjecting violence manifests itself in the inclusive context, through normative logic, activated in the classification and categorization of disabled bodies and their affections. This movement weakens plural forms of life and, therewith, to maintain singularities, some bodies rise up, establishing resistance through lines of flight. In this sense, I aimed to map the practices of (non) violence in inclusive education composed of molar, molecular and lines of flight that act in the production of subjective marks in the deaf ethos. This is a cartographic research, based on a paradigmatic case, carried out in a school unit located in the interior of the state of São Paulo, in the high school stage. In school cartography, I problematized the practices of deaf subjectivation arising from the relations of knowledge and power produced in school discursive practices. I turned to the internal and capillary productions of/in the school, through the eyes of the deaf person, as well as about their insertion in inclusive educational practices. The field research took place on two fronts: observations in the school territory, with entries in a field diary and an interview, as a cartographic procedure. We opted for a cartographic analysis, conceptually based on the philosophies of difference. The theoretical reference came from Michel Foucault, Gilles Deleuze, and Félix Guattari. Were identified, interspersed with the narrative of the life poem, four molar lines (linguistic, physical space, affective and symbolic-religious violence) and four molecular lines (non-violence of the encounter, of being queer, of being umbandista, and other deafness), which guided the discussions. It is believed that the research contributes to recognizing aspects that lead to violence and non-violence in the constitution of subjectivity during the school trajectory of deaf people. In view of the signs found, there is a way of existence, a pragmatic of singularity in the life-poem, and that their voices/experiences in common rooms and the inclusive school stand as local knowledge that resists and announces more ethical practices in favor of differences made along lines of flight.
Desenvolvimento de compósito de HDPE verde com hidroxiapatita e união com Ti6Al4V através de sobremoldagem por injeção
(Universidade Federal de São Carlos, 2023-10-10)
Morozo, Mario Augusto
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Fiori, Márcio Antônio
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https://lattes.cnpq.br/8793913102689273
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https://orcid.org/0000-0002-4292-2068
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Canto, Leonardo Bresciani
This thesis addresses the development of a composite of green high-density polyethylene (G-HDPE) and hydroxyapatite (HA), compatibilized with high-density polyethylene functionalized with maleic anhydride (HDPE-g-MAH). It further explores the hybridization of this nanocomposite onto a Ti6Al4V - ELI alloy through injection overmolding, focusing on biomedical applications. The study involved the synthesis (precipitation in aqueous medium) and characterization (XRD, XRF, particle size distribution, and SEM) of hydroxyapatite, extrusion and injection molding, mechanical (tensile and impact), thermal (DSC), microscopical (SEM), and in vitro biological characterization of the composites. The results were evaluated using design of experiments (DOE), analysis of variance (ANOVA), and Tukey test. The composite containing 30 wt% of HA and 30 wt% of HDPE-g-MAH (relative to the HA content in the composite) showed a good balance of mechanical properties, nearly negligible hemolysis percentage, and a mass increase of 8% during the hydrolytic degradation test. The hybrid joint of the composite with the optimized composition, injection molded onto Ti6Al4V, showed good interfacial anchoring, resulting in outstanding shear strength (3 MPa) and fatigue life (> 106 cycles). This multi-material approach has provided subsidies for the advanced manufacture of biomedical devices with optimized mechanical and biological properties, exploiting efficient processing techniques.
Obtenção de nanocelulose de palha de cana-de-açúcar com diferentes teores de lignina residual
(Universidade Federal de São Carlos, 2023-10-10)
Almeida, Gabriela Fornaziero de
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Farinas, Cristiane Sanchez
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https://lattes.cnpq.br/9933650905615452
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https://orcid.org/0000-0002-9985-190X
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Mattoso, Luiz Henrique Capparelli
Brazil stands out for its high production of sugarcane. This production generates a significant amount of byproducts, such as sugarcane straw. Due to its high cellulose content, converting straw into nanocellulose can be a promising alternative to add value to such a side-stream. Recent studies have shown that producing nanocellulose with residual lignin is a sustainable alternative to modify its surface properties. Residual lignin reduces the hydrophilicity of the nanocellulose, improves its compatibility with hydrophobic polymers and increases its thermal stability. Given the growing interest in the study of lignin-containing nanocellulose (L-NC) and the possibility of using sugarcane byproducts for this purpose, this work aimed to obtain L-NC from sugarcane straw with different residual lignin contents to investigate the effect of lignin on the thermal, morphological, surface, and structural properties of nanocellulose. The lignin content in the straws was varied by bleaching with chlorine dioxide under two conditions of reaction time and amount of bleaching chemicals. Three types of L-NC were produced using sulfuric acid hydrolysis from three biomass samples, namely: unbleached straw (U), mildly bleached straw (MB), and severely bleached straw (SB). The resulting lignin contents were 17.3 ± 0.3% for US, 14.7 ± 0.3% for MB, and 4.6 ± 0.8% for SB. Higher yields were observed for the L-NC obtained from bleached straws, which are purer in terms of cellulose. Atomic force microscopy confirmed the isolation of cellulose nanocrystals and nanofibers, regardless of the bleaching severity. Finally, lignin was found to increase the thermal stability of nanocellulose while reducing its crystallinity index, and colloidal stability. Its width and hydrophilicity did not vary significantly.
Thermodynamics of the Ramsey Zone
(Universidade Federal de São Carlos, 2023-10-10)
De Assis, Rogério Jorge
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Diniz, Ciro Micheletti
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Almeida, Norton Gomes de
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Villas-Bôas, Celso Jorge
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https://lattes.cnpq.br/7703787869253387
Previsões de preço de criptomoedas utilizando algoritmos de Aprendizado de Máquina
(Universidade Federal de São Carlos, 2023-10-10)
Nordi, Victor Hugo Werneck
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Cantão, Renato Fernandes
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https://lattes.cnpq.br/3016268479248046
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https://lattes.cnpq.br/1825035215515061
Cryptourrencies are decentralized digital currencies created with the intent of replacing traditional forms of payment. Their high volatility is one of the aspects that causes distrust among investors. Artificial Intelligence based on Machine Learning algorithms can be an invaluable tool to analyse this characteristic, helping to predict prices. In this sense, this project’s goal is to use algorithms implemented in Python — Support Vector Machine and Long Short-Term memory — alongside convenient performance metrics such as mean squared error, mean absolute error, maximum error and R^2 to assess their price prediction capabilities in face of such randomness.
Obtenção de nanomateriais de celulose contendo lignina residual a partir da madeira de seringueira e sua aplicação em filmes nanocompósitos com caseína
(Universidade Federal de São Carlos, 2023-10-11)
Silva, Maycon Jhony
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Martins, Maria Alice
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https://lattes.cnpq.br/5449448657729439
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https://orcid.org/0000-0002-6416-6929
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Mattoso, Luiz Henrique Capparelli
In light of the escalating global population and the mounting environmental concerns, the quest for sustainable and renewable solutions has emerged as a paramount focus in scientific exploration across diverse fields. Plant-derived fibers stand out as a compelling sustainable option for fabricating materials due to their intriguing physical and mechanical attributes. Within this context, this study aimed to optimize the production of cellulose nanomaterials featuring varying lignin concentrations sourced from rubber tree wood fibers, and to explore their application in nanocomposite films. In the initial phase, fibers with distinct lignin compositions (15.3%, 6.7%, and 3.1%) underwent acid hydrolysis at differing reaction durations (45 minutes, 75 minutes, and 120 minutes) to yield cellulose nanomaterials with residual lignin (LCNCs). Subsequently, the study assessed the impact of integrating LCNCs, possessing both higher and lower lignin contents, along with commercially available cellulose nanocrystals (CNCs), into a casein (CA) matrix. The chemical treatments demonstrated remarkable efficacy, resulting in LCNCs with an average diameter below 4.1 nm, showcasing a high Crystallinity Index (I.C. > 70%), and achieving a reaction yield surpassing 50% across all evaluated reaction durations. Additionally, LCNCs exhibiting higher lignin content displayed notable colloidal stability (> -40.0 mV). The resultant nanocomposite films exhibited a superior I.C. compared to the pure CA matrix (34%), presenting as transparent, uniform, and easily manipulable films. The incorporation of LCNCs amplified the contact angle (θ >82.5°), enhancing the films' hydrophobic characteristics. Furthermore, films integrated with commercial CNCs and LCNCs with elevated lignin content exhibited a significant increase (p<0.05) of approximately 45% and 40%, respectively, in tensile strength (TS). Additionally, there was a 20% and 23% enhancement in the modulus of elasticity (EM) compared to the pure CA matrix. This research delineated a precise methodology for producing lignin-infused cellulose nanomaterials, promisingly valorizing rubber tree biomass residues. Moreover, it underscored the potential of integrating these materials into the casein matrix, yielding films endowed with exceptional properties, thus fostering diverse applications.
Bancos comunitários como adequação sociotécnica financeira: uma análise crítica ante o potencial de autossustentabilidade
(Universidade Federal de São Carlos, 2023-10-11)
Retamiro, Wiliam
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Molina, Wagner de Souza Leite
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https://lattes.cnpq.br/5939243693407420
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https://orcid.org/0000-0002-3855-7416
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Machado, Maria Lúcia Teixeira
Community Development Banks (BCD) have become an important instrument for the expansion of Solidarity Finance through microcredit, largely due to the public policies that have been offered since the creation of the National Secretariat for Solidarity Economy. With the rise of ultra-liberal governments and detached from a progressive perspective after the 2016 coup, support ceased, causing the failure of these instruments characterized as Sociotechnical Adequacy (AST), originating from the production of science from social movements. of solidarity finance, which is a way of producing knowledge, therefore aims at the social appropriation of knowledge through sociotechnical inclusion, defended by the CTS field of studies. Therefore, the research analyzed the potential for financial self-sustainability of the BCD under the hypotheses of possible fundraising directly from potential investors, in order to provide and redeem the productive function of money. For this purpose, there are legal instruments such as D11646 and the PLP 93 /2007 which may enable direct fundraising by BCD. To verify this hypothesis, the study was carried out through field research with the application of questionnaires to two distinct groups: (i) BCD management team and (ii) potential joint financial investors in BCD. After data collection was carried out, they were initially treated by descriptive statistics and later by cross-analysis, through which partnerships consistently revealed the potential for capturing the target audience of the BCDs researched. However, the absence of management instruments undermines the reliability of investment returns, with Economic Science researchers playing an important role in the construction of these resources. Such conditionality results indicate, in addition to the possibility of social impact savings, the need for a repositioning regarding the management of the BCD, using internal management indicators, to maintain selfsustainability without losing the basic principle of the economy solidarity, which is a specific way of humanizing the economy. From the perspective of the CTS field, it was noted that Community Banks, as an AST, are instruments that provide a way to do science in an engaged way, with a view to social movements of solidarity finance, as well as promoting the appropriation social knowledge.
Prática corporal em tempos de pandemia sobre olhares das professoras da educação infantil
(Universidade Federal de São Carlos, 2023-10-15)
Pinheiro, Rosa Aparecida
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Campos, Sheila Garbulha Tunuchi
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https://lattes.cnpq.br/6292207464385037
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https://lattes.cnpq.br/3046042793246183
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https://orcid.org/0000-0002-4910-4842
O artigo foi tencionado a partir de um recorte da pesquisa de mestrado, realizada durante o período de ensino remoto, devido à pandemia de COVID-19, que investigou como as professoras da educação infantil perceberam a participação das famílias na aplicação de atividades que envolvem o corpo das crianças. Foram utilizados para coleta de dados questionário e entrevista narrativa e análise qualitativa. Os resultados indicaram que a comunidade escolar teve que repensar suas abordagens de ensino, com destaque para a importância das práticas corporais. A participação das famílias e as estratégias pedagógicas foram fundamentais no sucesso das atividades e no subsequente retorno das crianças ao ensino presencial. No entanto, nem todas as famílias aderiram completamente às propostas, evidenciando desafios na educação remota. O estudo apresentou deficiências na formação de professores e destacou a relevância do movimento corporal no ensino infantil durante a pandemia e a importância da colaboração das famílias
Magnetic fields as a tool to control superconducting devices
(Universidade Federal de São Carlos, 2023-10-16)
Chaves, Davi Araujo Dalbuquerque
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Ortiz, Wilson Aires
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https://lattes.cnpq.br/0241177338066307
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https://orcid.org/0000-0002-7778-0979
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Motta, Maycon
The quantum nature and dissipation-free flow of electric currents in superconducting materials have taken a central role as technological developments push forward the necessity of new methods for processing and dealing with the amount of information generated by modern consumption patterns. To enable such superconducting technologies, it is necessary to understand the underlying Physics dictating the behavior of superconductors, unveiling or allowing to control phenomena useful for applications. Due to its intrinsic relationship with the superconducting state, applied magnetic fields emerge as natural candidates for manipulating the properties of superconducting materials. These ideas motivated the research conducted in the context of this thesis, which is structured as a collection of studies in which different superconducting systems are subjected to magnetic fields, aiming to investigate and control their behavior. In the first set of results presented, the temperature of a plain Nb thin film is reduced under different magnetic field cooling conditions. Then, flux penetration patterns are studied by magneto-optical imaging (MOI). The results demonstrate how the applied field spatial distribution and direction influence the ability of a superconducting device to transport electrical currents without dissipation, without the need for any complex nanofabrication steps. Such influence is due to the emergence of different trapped flux configurations in the superconductor, either facilitating or hampering further magnetic flux penetration, effectively reducing or increasing the effective maximum current the film can carry in the superconducting state. It is true, however, that for most applications in superconducting technology, nanofabrication is required, in some cases demanding the creation of regions of suppressed superconductivity called weak-links. A different study investigates normal and superconducting state properties of Nb films patterned with a single weak-link fabricated by focused ion beam (FIB) milling. The investigation quantifies the suppression of superconducting properties and the modification of the normal flow of electrons, finding that these are linked by the degree of impurities introduced by the nanofabrication. One interesting effect is the emergence of a local peak in the magnetic field-dependent magnetization of the patterned samples. In a separate work, we employ MOI to investigate these specimens under applied fields near such local peak. This study reveals that the patterned films undergo a behavior transformation from a weak-link to a strong-link, enabling more current to flow between the unpatterned Nb regions. Quantifying the MOI data allows us to understand the flux dynamics responsible for the peak effect. In a different study, the properties of a dc superconducting quantum interference device (SQUID) presenting two parallel weak-links comprised of asymmetric constrictions of a superconducting amorphous MoGe film were investigated. It is possible to influence the behavior of such devices by modifying their geometry. The study demonstrates how understanding the relationship between the device and applied magnetic fields and currents allows preparing the SQUID in multiple energy states, readable at the same field value, thus allowing its use as a multilevel memory element. Finally, we aim to consolidate MOI as a reliable tool to quantitatively study the behavior of superconducting films under ac magnetic fields. For that, we investigate the independence of the thermomagnetic history on the ac magnetic susceptibility response of an amorphous MoSi film. This study relies on the possibility of emulating ac effects by cycling an applied dc field. The results are successfully compared with standard SQUID-based magnetometry while taking advantage of the local spatial resolution of MOI to reveal the quantitative behavior of individual flux avalanche events and the presence of zones of flux annihilation at interfaces between positive and negative flux regions.
Tessituras teórico-conceituais sobre Inovação: uma análise das pesquisas brasileiras no âmbito dos Programas de Pós-Graduação em Ciência da Informação
(Universidade Federal de São Carlos, 2023-10-17)
Carlucci, Renan Augusto
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Castro, Fabiano Ferreira de
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https://lattes.cnpq.br/7124931056289027
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https://orcid.org/0000-0002-8712-2654
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https://lattes.cnpq.br/0842946668425855
Innovation has been the subject of study across various domains of knowledge. Within the field of Information Science, there exists a diversity of approaches to the theme. Consequently, the question arises: how has innovation been conceptualized and addressed in the research published by Postgraduate Programs in Information Science in Brazil? To address this query, the study aimed to investigate scientific publications expressed through dissertations and theses defended in the field of Information Science within the Brazilian context. The objective was to map the scientific production on the topic of innovation within dissertations and theses defended in Brazilian Postgraduate Programs in Information Science, with the aim of identifying: a) the conceptualization of innovation in the conducted research; b) the approaches employed in addressing innovation; c) the bibliography utilized in constructing the conceptual framework; and d) networks of cited works. Characterized by a descriptive and exploratory methodology, the research adopted the Systematic Literature Mapping (SLM) method to support the discussion and develop a theoretical framework for the innovation theme within the Brazilian Information Science community. Seventy-two works were identified, comprising 47 master's dissertations and 25 doctoral theses that explicitly addressed the concept of innovation. The results presented encompassed the mapping of concepts and approaches used in the innovation domain, the authors who produced the academic-scientific works, the bibliography utilized to support the epistemological conception of the concept, and the network of cited works. In the realm of scientific research, innovation concepts manifest along 03 (three) central domains: epistemological, historical, and economic-industrial. It was concluded that Innovation is a topic of research agenda within Information Science, considering information and knowledge as foundational elements in the inventive process, which precedes the emergence of innovation. Notably, innovation is characterized as an applied invention, whose utility and scope present as a viable solution to a specific need within a given context.
Percepções de trabalhadores da saúde sobre o processo de acreditação hospitalar: benefícios e oportunidades de melhorias
(Universidade Federal de São Carlos, 2023-10-17)
Cavalheiro, Mariana Digieri
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Rossit, Rosana Aparecida Salvador
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https://lattes.cnpq.br/3333865775403342
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https://orcid.org/0000-0002-0563-7188
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https://lattes.cnpq.br/0048091396366726
Hospital accreditation helps healthcare institutions gain competitive advantages, enabling them to continuously develop and adapt to successive changes in the workplace while pursuing quality in the services offered to their patients. Quality is determined by seven pillars: effectiveness, efficiency, optimization, acceptability, equity, and legitimacy, which demand professional receptivity to their activities. Professionals who possess knowledge and dedication towards their roles can accomplish the objectives of the quality policy, which strives for continuous improvement to benefit all parties within the organization. This study aimed to analyze the perception of healthcare workers regarding hospital accreditation to identify the benefits, challenges, and opportunities for improving work processes and healthcare quality. It was a descriptive-exploratory field study with a qualitative-quantitative approach. The Hospital Accreditation Process Perception Assessment (HAPPA) tool was designed with Likert scale items encompassing topics corresponding to ONA's (National Accreditation Organization) levels I and II along with open-ended questions that was formed and applied in person to 200 healthcare workers at an oncology referral hospital in the central-west region of São Paulo State. The institution has around 2,000 employees working various shifts and hours. Inclusion criteria were: being a hospital worker at all levels of education, functional literacy, and at least six months of work experience. The results showed that workers perceived accreditation as important, but expressed a need for improvement and greater professional recognition. Benefits of accreditation include improving customer satisfaction, standardizing procedures, nurturing a culture of safety, and providing opportunities for training enhancement. The challenges and difficulties indicate the necessity of collaborating among team members, having appropriate staffing for safe care delivery, and sustaining the changes made. These elements highlight the importance of complementary strategies to certification, such as continuing education - a possibility for updating professionals; aligning work processes; developing interpersonal and interprofessional relationships and collaborative practices and strengthening the organizational culture; and shared management, "giving a voice" to workers and making them aware of the importance of accreditation in the search for improvements in the quality of care, with a view to greater adherence and participation. In conclusion, the results of this study offer support for planning, since the difficulties pointed out and the need to promote the engagement of all the actors working in the institution are extremely important for improving hospital accreditation processes, through the development and involvement of the team. Additionally, the APPAH has undergone restructuring and improvement to integrate ONA III-related aspects. It can be distributed and utilized in all hospital institutions, regardless of their current certification level, to gather data and enhance staff awareness.
Agenciamentos juvenis a partir de uma pesquisa em escolas do ensino médio
(Universidade Federal de São Carlos, 2023-10-18)
Amorim, Simone Cristina de
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Garcia, Marcos Roberto Vieira
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https://lattes.cnpq.br/3911188481669270
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https://orcid.org/0000-0002-5668-2923
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https://lattes.cnpq.br/0068826059223733
This thesis analyzed youth assemblages as of on research carried out in public high schools. Its conception resulted from the quadripolarity of the assemblage's conceptual scheme (strata, collective assemblages of enunciation, machinic assemblages and abstract machines) based on Deleuze-Guattarian works, and operationalized for the field with the notion of youth imbricated with the interventional research. It aimed to investigate whether young people’s capabilities on affect and be affected by at Scientific Initiation Program for High School (IC-EM) were intensified in local research, and to analyze the subthemes that presented themselves in deterritorialization or decoded. The methodology added pre-established mixed methods to the limits of its representations, thus dealing with the weekly monitoring of IC-EM, in three local schools, from September 2019 to December 2023. This period coincided with the deployment/implementation/suspension of Law 13,415, of February 16, 2017 (New Secondary Education Law), known for obstructing the critical training of young people in public secondary education. For the field results, the subtopics with intensification, deterritorialization or decoding in the trajectory of the research accompanied with youth were as follows. (1) Youth assemblages by means of the school institution: the school has shown itself to be permeated by two institutional regimes, democracy or tyranny, with episodes of oppression, but also encounters and friendship, with collective assemblage of enunciation from other places that reverberate in everyday school life and summon young people to their own modes of expression (youthful secrecy, combat against racism, respect for gender self-identification and future perspectives). (2) Young people and their families: the family bullying emerged, with criticism disguised as praise, downgrader comparisons, contradictory messages that are impossibility to comply — for young people with different inclinations and values in the family — above all the not-heterossexuals, they are shown not only as a protective institution, but as a source of repeated suffering. (3) SARS-CoV2: a viral stratum, internal to a machine assemblage where droplets or aerosols of saliva predominate, deterritorialized the routine, imposed coexistence with family members and forcerd the micromanagement of small fears. (4) Acid humor as a youth psychosocial support strategy among LGBTs+people?: emerged in one of the subgroups of students in decoding internalized meanings of mental suffering; allowing to touch difficult content in the elaboration of painful psychosocial experiences. (5) (Dis)sexuality: decoded cultural codes that confuse intensity with compulsion, harassment and violence in sexual practices; rescuing practices of freedom in machinic assemblages. (6) Indianness: young people sought ways to affirm not only indigenous descent, but a becoming-indigenous, indicative of the limit of ethnic-racial categorization, which erases assimilationist racism. School as an institution was not limited to constraining the inventive abilities of young people; before that it was a place of meetings, participation, friendship and support, where these young people could turn to those they trust. There was an intensification of the IC-EM' ability to affect and be affected in this interventional research. After all, any ability to affect and be affected depends directly on the encounters provided by the world.
Efeito do aumento de temperatura sobre a matéria orgânica dissolvida fluorescente produzida por microalgas de água doce em cultivos axênicos
(Universidade Federal de São Carlos, 2023-10-18)
Cassiano-Oliveira, Israel
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Bagatini, Inessa Lacativa
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https://lattes.cnpq.br/3904631503604006
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https://orcid.org/0000-0002-5549-2255
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Sarmento, Hugo
Dissolved organic matter (DOM) encompasses a wide range of biologically derived molecules and is the most abundant and bioavailable form of carbon in aquatic environments. DOM plays a key role in the carbon cycle, as it influences pH and light penetration in the water column, affecting primary productivity, and serves as the primary energy source for heterotrophic microorganisms. Phytoplankton, through its metabolism or cellular death, represents a major source of DOM for aquatic systems. However, little is still known about the composition of these organic substrates and the factors that regulate their production and quality, especially from the perspective of global climate change. Small changes in phytoplankton-derived DOM (DOMp), triggered by changes in environmental factors, can cause shifts in microbiome structure and, therefore, carbon fluxes in aquatic food webs – thus, in the carbon cycle. To examine the consequences of temperature increase on DOMp, axenic cultures of Microcystis aeruginosa and Cyclotella sp. were subjected to +4°C warming experiments, with and without prior acclimation, and analyzed using flow cytometry, fluorescence spectroscopy, and quantification of dissolved organic carbon at different growth stages. Two proteinaceous fluorescent components and two humic/fulvic-like components were identified. While the composition of DOMp varies more pronouncedly with growth stages, temperature appears to induce changes in the bioavailability and carbon exudation rate of exudates. Values of some optical indices and spectral ratios differed from those reported for phytoplankton, which has important implications for understanding DOM in natural waters. Additionally, some fluorophores typically associated with humic compounds appear to include other substances of different nature and origin, potentially related to oxidative stress. It is expected that the results obtained in this investigation will advance the understanding of DOMp production processes, help refine the interpretation of DOM optical property data in natural environments, and contribute to a better understanding of the impact of climate change on key portions of the carbon cycle.
Função sexual de mulheres com Fibromialgia
(Universidade Federal de São Carlos, 2023-10-19)
Silva, Rafaela de Melo
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Bernardes, Ana Paula Magalhães Resende
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https://lattes.cnpq.br/7497705995430245
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Serrão, Paula Regina Mendes da Silva
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https://lattes.cnpq.br/2917658715637353
Sexuality is an integral part of the individual, and is influenced by physical and psychological factors. Fibromyalgia is a central sensitization syndrome that mainly affects women and the clinical condition involves the presence of pain, anxiety, depression, low self-esteem, and these factors can negatively influence the sexual function of this population. It is essential to deepen knowledge in this area in view of the impact of sexual dysfunction on the quality of life and well-being of women with fibromyalgia. Study 1: The aim of the study was to investigate the relationship between sexual function and central sensitization in women with Fibromyalgia. This is a cross-sectional observational study. An online questionnaire was used for data collection. The questionnaire consisted of 85 questions, including questions to assess female sexual response (Female Sexual Function Index), assessment of central sensitization (Central Sensitization Inventory) and assessment of the impact of Fibromyalgia (Fibromyalgia Impact Questionnaire). 337 participants were included, 75.7% of women had sexual dysfunction. Furthermore, the results showed an association between sexual dysfunction and central sensitization. In conclusion, the results showed that there is a high prevalence of sexual dysfunction among women with Fibromyalgia, with a positive association between sexual dysfunction and central sensitization, with desire being the most affected domain. Study 2: the objective of the study was to evaluate the influence of anxiety and depression on the sexuality of Brazilian women with Fibromyalgia, for this, a cross-sectional observational study was carried out through an online questionnaire that evaluated female sexual response (Female Sexual Function Index), anxiety and depression (Hospital Anxiety and Depression Scale). A total of 255 women with sexual dysfunction were included in the study, most of them had moderate alteration related to depression (39.6%) and severe alteration related to anxiety (43.5%). Furthermore, the results showed that anxiety and depression are associated with sexual dysfunction. It is concluded that sexual dysfunction among Brazilian women with Fibromyalgia is associated with anxiety and depression, and it is essential that a screening of sexual dysfunction be carried out among patients with depressive symptoms and who have Fibromyalgia, so that an integral approach is carried out, in order to improve their quality of life.
Bioprospecção de actinobactérias endofíticas com potencial antimicrobiano isoladas de Theobroma cacao
(Universidade Federal de São Carlos, 2023-10-20)
Pinto, Lívia Freitas da
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Nunes, Adriana Ribeiro Carneiro
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https://lattes.cnpq.br/7533716053525477
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https://orcid.org/0000-0003-1522-9871
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Sousa, Cristina Paiva de
Actinobacteria constitute one of the largest bacterial phyla and are classified as Gram-positive bacteria, being ubiquitous in aquatic and terrestrial ecosystems. They are recognized for their ability to produce secondary metabolites with different functionalities, among which are bioactive compounds with antimicrobial activity. This study bioprospecting and identification of endophytic actinobacteria isolated from Theobroma cacao grown in the region of Paragominas, Pará. region of Paragominas, Pará, Brazil and evaluated the biotechnological potential of these strains in the production of antimicrobial agents. After isolation, it was possible to verify the presence of 11 distinct endophytic bacteria. bacteria. The identification of these isolates, determined by phenotypic analysis and molecular characterization, proved that 4 of the 11 belonged to the actinobacteria group, and these were classified at the level of Microbacterium (3 strains) and Curtobacterium (1 strain). The other isolates were characterized as Pseudomonas (2 strains), Bacillus (1 strain), Ralstonia (1 strain) and Methilobacterium (3 strains). The 4 strains from the Actinobacteria phylum were submitted to the antimicrobial activity evaluation test activity. All of them inhibited the growth of Staphylococcus aureus (inhibition halos diameters ranged from 2.3 to 3 cm), proving to be effective against this Gram-positive bacterium. However, they showed no activity against Escherichia coli.
0D and 2D nanomaterials based on Graphene quantum dots and MXenes: synthesis, characterization and application in sensors and supercapacitors
(Universidade Federal de São Carlos, 2023-10-20)
Facure, Murilo Henrique Moreira
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Corrêa, Daniel Souza
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https://lattes.cnpq.br/0461451015026948
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https://orcid.org/0000-0002-5592-0627
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https://lattes.cnpq.br/4173216607463824
Graphene Quantum Dots (GQDs) are small fragments of one or a few layers of graphene with lateral dimensions inferior to 100 nm. GQDs present some characteristics similar to those of graphene, such as a high surface area/volume ratio and chemical stability. In addition, GQDs present a bandgap between their valence and electronic conduction bands. This bandgap gives rise to one of the most investigated properties of GQDs: their photoluminescence, which enables their application as luminescent sensors. In this sense, in the first work, hydrothermal syntheses of GQDs from graphene oxide (GO) were studied aiming at obtaining a material with greater photoluminescence intensity for application in luminescent sensors. The synthesis temperature, pH of the GO solution, and GO concentration were evaluated to optimize the quantum yield of GQDs. An optimized value of 8.9% was obtained. The influence of each parameter on the composition and properties of the GQDs was carried out from the physical-chemical characterization of the materials. The synthesized materials were used in the detection of Fe3+ ions in aqueous solutions by luminescence quenching, obtaining a detection limit of 0.136 M. Like GQDs, the discovery of a new class of materials known as MXenes was inspired by the discovery of graphene. MXenes are 2D materials, in which transition metal layers are interleaved with carbon and/or nitrogen layers. Such materials have demonstrated high energy storage capacity, being widely exploited in devices such as supercapacitors and batteries. However, the restacking of the MXene layers and the narrow potential window usually obtained limit the performance of these materials in such applications. In another work, nanodiamonds (NDs) were used to prevent the restacking of the MXene layers during its use as a supercapacitor electrode. The pillaring effect obtained with the NDs allowed a greater diffusion of protons between the layers of the MXene Ti3C2Tx, resulting in a capacitance of 235 F/g (561 F/cm3) when used in 3 M AlCl3 electrolyte. Furthermore, a wide potential window of 1.2 V could be used due to the reduced water activity in the electrolyte.