RI

Título: Análise comparativa do perfil imunológico e bioquímico entre pacientes com Doença Pulmonar Obstrutiva Crônica e pacientes com Espirometria com Comprometimento da Relação Preservada (PRISm) Autor(es): Braz, Leticia Helen Dias Primeiro Orientador: Baccan, Gyselle Chrystina Abstract: Chronic Obstructive Pulmonary Disease (COPD) and Preserved Ratio Impaired Spirometry (PRISm) are pulmonary conditions that share common factors. However, the pathophysiological mechanisms differentiating these entities remain poorly understood. This study aimed to compare the immunological and biochemical profiles of patients with COPD and PRISm and to analyze the correlation of these biomarkers with anthropometric parameters in each group. A cross-sectional analytical study was conducted involving 72 patients aged 50-80 years. Serum cytokines (IL-6, IL-8, IL-10, IL-12, TNF), biochemical markers (total cholesterol, HDL, LDL, triglycerides, glucose, glycated hemoglobin), and anthropometric measurements (waist circumference, triceps skinfold thickness, mid upper arm circumference) were assessed. No statistically significant differences were found between the groups regarding cytokine or biochemical levels. However, in COPD patients, abdominal circumference correlated positively with IL-6 levels (r = 0.565; p < 0.05), while triceps skinfold thickness showed a significant inverse correlation with IL-10 (r = – 0.427; p < 0.05). In PRISm patients, glucose levels were positively correlated with mid upper arm circumference (r = 0.574; p < 0.05) and body mass index (r = 0.567; p < 0.05). Although COPD and PRISm patients exhibited similar inflammatory and biochemical profiles, our analysis of correlations with body composition parameters showed distinct associations. The presents findings underscore the importance of individualized clinical management for each patient group. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação

Título: Anais do X Congresso Nacional de Arquivologia Autor(es): Matos, Maria Teresa Navarro de Britto; Brandão, Gleise da Silva; Souza, Maíra Salles de; Feitoza, Rayan Aramis de Brito; Andrade, Leide Mota de Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Outros

Título: Técnicas de modulação vetorial baseadas na distribuição da energia de modo comum para atenuação da corrente de fuga em inversores fotovoltaicos de três níveis Autor(es): Mendonça, Luan Aleixo Canário Primeiro Orientador: Bahia, Filipe Antônio da Costa Abstract: Transformerless photovoltaic inverters are susceptible to leakage current, predominantly caused by the common-mode voltage. Modulation strategies typically focus on reducing the amplitude of this voltage, while its frequency spectrum is often neglected. Since the leakage current flows through an RLC loop formed by the output filter and the parasitic capacitance of the photovoltaic modules, the distribution of the common-mode voltage frequency spectrum relative to the circuit resonance frequency has a direct impact on its magnitude. Therefore, shifting the energy of its frequency components away from the resonance region constitutes an effective leakage current mitigation strategy. Based on this premise, this work introduces a modulation approach grounded in the spectral distribution of common-mode energy. To validate this approach, two modulation techniques are proposed. The first concentrates most of the energy around the switching frequency, making it more suitable when the resonance frequency is significantly higher. The second redistributes part of the energy to higher-order harmonics, making it more advantageous when the resonance frequency is close to or lower than the switching frequency. The proposed techniques operate over the entire modulation index range, enable DC-link capacitor voltage balancing, and exhibit low harmonic distortion and switching losses, as confirmed by both simulation and experimental results. In addition, the analysis of leakage current as a function of the modulation index reveals an optimal operating region in which the leakage current is minimized. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Tese

Título: Fatores que afetam o uso da avaliação e a temporalidade do processo avaliativo Autor(es): Gondim, Patrícia Santos Cardoso Primeiro Orientador: Paixão, Roberto Brazileiro Abstract: This research aimed to analyze how the factors influencing the use of evaluation differ according to temporality, that is, in the moments defined as before the evaluation, during the execution of the evaluation, and after its completion, based on the theoretical gap related to the temporal dimension in the evaluation process. Grounded in the interpretivist paradigm, the study conceptualized use as a socially constructed, processual, and contextual phenomenon. A conceptual framework articulating similarity and temporality was proposed and submitted to expert analysis through a two-round Delphi method. The participants, predominantly affiliated with Graduate Programs in Education whose courses hold high-quality ratings whitin CAPE' s evaluation system, examined the influence of these factors across the different stages. The results indicated that, at each stage, the factors relate to specific activities: in pre-evaluation, diagnosis, planning, and stakeholder engagement; in implementation, adaptation of planning and interaction between evaluator and stakeholders; and in post-evaluation, analysis, communication of results, and implementation of recommendations. The findings also showed that the factors are interrelated and significantly influence stakeholder engagement throughout the entire process. The framework was validated by the experts and contributes to understanding how factors interact with temporality to affect evaluation use. As limitations, the study highlights the low initial response rate and the reduced number of participants in the second Delphi round. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação

Título: Determinação sequencial de Cd, Cu, Mn e Pb utilizando análise de suspensão por FS-F AAS e avaliação da concentração de Hg em amostras de poeira urbana coletadas em Santo Amaro, Bahia, Brasil. Autor(es): Francisco, Rafael Ribeiro Primeiro Orientador: Araujo, Rennan Geovanny Oliveira Abstract: This master’s dissertation addresses the development, analytical performance characteristics, and application of analytical methods for the determination of trace metals in urban dust samples, with a focus on the environmental assessment of the urban area of Santo Amaro, Bahia, Brazil. The work was divided into two complementary parts, involving distinct analytical approaches and environmental and human health risk applications. In the first part, an analytical method was developed and optimized for the sequential determination of Cd, Cu, Mn, and Pb in urban dust using sample preparation in the form of slurry and detection by flame atomic absorption spectrometry (F AAS) in fast sequential mode (FS). The study of sample mass indicated that the range between 10 and 75 mg provided the most suitable condition for the suspension preparation procedure, thus, a mass of 50 mg was selected, ensuring a good signal-to-noise ratio while maintaining analytical linearity. Fractional factorial design and Doehlert design were employed to optimize the experimental conditions, including the evaluation of the acidic medium, sonication time, and the use of a surfactant (Triton X-100). Experimental optimization indicated that the use of 1.25 mol L-1 HNO3, without surfactant addition, and a sonication time of 30 min resulted in the best analytical performance. The analytical method presented limits of quantification (LoQ) ranging from 3.03 to 81.6 mg kg-1. Accuracy was confirmed by the chemical analysis of certified reference materials (CRM) of fly ash (BCR 176R) and road dust (BCR 723), with agreement values ranging from 88.0 (± 0.6) to 91.8 (± 0.1)%. Precision was expressed as relative standard deviation (%RSD), with values below 5% (n = 3). The methodology enabled the analysis of urban dust with reduced reagent consumption and simplified sample preparation, supporting its applicability in environmental studies. In the second part, the direct determination of Hg was applied to 21 urban dust samples collected in the municipality of Santo Amaro, Bahia, using thermal decomposition and detection by atomic absorption spectrometry (AAS). The limits of detection (LoD) and quantification (LoQ) obtained were 0.08 ng g-1 and 0.25 ng g-1, respectively. Method accuracy was confirmed by the chemical analysis of a CRM for trace elements in multi-nutrient fertilizer (NIST 695), with an agreement of 106.3 (± 5.2)%. The %RSD value was below 5%. The analytical method allowed the quantification of Hg over a wide concentration range, revealing a heterogeneous spatial distribution, as well as good accuracy and precision. Hg concentrations ranged from 15.8 (± 0.3) ng g-1 to 1198 (± 29) ng g-1, with a mean of 54.9 (± 32.6) ng g-1 and a median of 46.1 ng g-1, after application of the Shapiro–Wilk (SW–W) normality test. The highest concentrations were observed in areas with greater urbanization, intense vehicular traffic, and proximity to industrial sites. Environmental interpretation was performed using the enrichment factor (EF), geoaccumulation index (Igeo), and ecological risk indices (Er), calculated based on a regional geochemical background specific to the state of Bahia. The results indicated significant enrichment and elevated ecological risk at localized points, with a very high potential ecological risk for the study area, considering the specific sampling period and the prevailing climatic conditions at that time. The sustainability of the analytical methods for the sequential determination of Cd, Cu, Mn, and Pb using suspension preparation and for the direct determination of Hg was evaluated using the AGREE (Analytical Greenness Metric) index, yielding scores of 0.78 and 0.86, respectively, indicating high adherence to the principles of Green Analytical Chemistry. Overall, the results demonstrate that the applied analytical methods are feasible, reliable, and suitable for the environmental monitoring of trace metals in urban dust. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação

Título: Análise espaço-temporal das ilhas de calor urbanas em Salvador (BA) a partir de imagens landsat processadas no google earth engine Autor(es): Santos, Tainá Couto dos Primeiro Orientador: Freiman, Fabiano Peixoto Editora / Evento / Instituição: UNIVERSIDADE FEDERAL DA BAHIA Tipo: Trabalho de Conclusão de Curso

Título: Vamos comunicar, PDGS? A construção de um plano de comunicação institucional estratégico para mídias digitais com foco no Instagram Autor(es): Brito, Alexsandra de Oliveira Primeiro Orientador: Müller, Rodrigo Abstract: In the current scenario of accelerated information circulation, postgraduate programs are faced with the need to strategically and effectively employ communication tools and practices through digital social media, in order to broaden institutional visibility and strengthen engagement with diverse audiences. This dissertation was developed through applied research, whose main objective was to propose a Strategic Institutional Communication Plan for the Postgraduate Program in Social Development and Management - PDGS at the Federal University of Bahia with actions focused on digital social media: Instagram. In this approach, the research followed the methodological path led by exploratory and descriptive research, using inductive-deductive scientific methods, with the help of historical, comparative and documentary procedural methods. Furthermore, data collection techniques of an indirect nature were supported by bibliographic and documentary research, as well as direct data collection included semi-structured interviews applied to the Program's teachers and electronic questionnaires presented to students (students and graduates). Data analysis was conducted using descriptive statistics techniques, using graphs, figures and tables, in accordance with the types of data collected. As main results, it was found that students assess that PDGS needs to implement improvements in its institutional communication processes, mainly regarding strengthening its institutional identity and image, publicizing its structuring themes, its technical-scientific work and its actions in the community with the production of clear and informative materials. The teachers brought up relevant points about the importance of the Program for development in different territories and sectors of society, as students (and graduates) are agents that transform realities, and that is why they state that the Program's audience has been reached in their selection processes, however they highlight the importance of more effective communication of the Program to amplify the Master's Degree to different audiences, making it better known and recognized for its themes. The Social Technology for Territorial Development (TGS.DT) developed is the first draft for the implementation of a Strategic Institutional Communication Plan for the Program, as the limitations for its application include both human and material resources, as the Program does not have a technical team dedicated to its application, measurement and updating, despite having been tested during the preparation of this dissertation. As a contribution, this work rescues the need to rethink the Program's institutional communication, with a view to strengthening its Identity and Institutional Image, with the dissemination of its institutional memory to its different audiences, expanding its main themes with a view to democratizing the themes discussed in it beyond academic walls. Editora / Evento / Instituição: UNIVERSIDADE FEDERAL DA BAHIA Tipo: Dissertação

Título: Vulnerabilidade do consumidor idoso no uso de serviços financeiros digitais Autor(es): Silva, Adeline Cardoso de Souza Primeiro Orientador: Vera, Luciana Alves Rodas Abstract: Alongside the emergence of new technologies mediating commercial relations in contemporary society, the increase in the Brazilian elderly population implies transformations in the country's consumption patterns. Faced with this trend and the growing digitalization of commercial transactions, this dissertation consists of a qualitative study on the vulnerability of elderly consumers in the use of digital financial services. Conducted in 2025 in the city of Salvador, Bahia, its central objective was to understand how the digitalization of financial services can produce states of vulnerability in elderly female consumers. To this end, semi-structured interviews were conducted with the voluntary participation of thirteen women, aged 80 and over, residing in Salvador, Bahia, and with an income of up to one minimum wage from social security or informal sources of income. The research is justified by the ongoing population aging in the country in conjunction with the increasing digitalization of financial transactions. The collected data were processed and analyzed using thematic analysis. The results showed the prevalence of dependence on family members and bank branches in the financial routines of these consumers. The main barriers encountered for autonomous digital access included low levels of education, limited digital skills, self-perception of incapacity, feelings of insecurity in the digital environment, as well as reduced physical and cognitive capabilities. Coping mechanisms for vulnerability included the termination of banking relationships, dependence on third parties, refusal to use technology, as well as continuous learning, information seeking, security measures in the digital environment, and engagement with digital technologies. Finally, the importance of understanding the needs of older adults in the context of consumption in the face of ongoing population aging is highlighted, aiming at the reformulation of more inclusive public policies and the promotion of actions focused on the well-being and quality of life of the Brazilian elderly population. Editora / Evento / Instituição: Universidade Federal da Bahia Tipo: Dissertação