Federal University Research Articles

Effect of solids concentration and operational variables on the performance of a geometrically optimized concentrator hydrocyclone employing a pseudoplastic fluid

The employment of hydrocyclones in thickening operations is an attractive option when compared to centrifuges and filters due to their low operating, maintenance, and acquisition costs. However, the performance of hydrocyclone separation is impaired as the concentration of solids and the viscosity of the suspension increases. Using geometric optimization techniques, the Federal University of Uberlândia developed one concentrator hydrocyclone named HC. When working with diluted and Newtonian slurries, the HC could generate a stream 45 times more concentrated than the one fed into it. In this study, the HC performance was evaluated when operating pseudoplastic fluids containing up to 10% solids by volume. The combination of the underflow diameter and vortex finder length with an adequate supply of pressure energy maintained the thickening potential of the HC even when the rheology of the fluid was changed. For different working suspensions, the HC hydrocyclone achieved a minimum water split to underflow of 5%, a maximum concentration ratio of 7.0, and a maximum efficiency of 49%. The encouraging results obtained by the HC validated the benefits of the geometric optimization, as they point to a significant advance in the thickening operation of non–Newtonian sludges with a flow behavior index greater than 0.5.

Soft-tissue keratocyst: report of 3 new cases from Brazil.

To describe the clinicopathological features of 3 new cases of soft-tissue keratocyst (STK) of the buccal mucosa from Brazil. Clinical data from 3 patients diagnosed with STK were obtained from the archives of the Laboratory of Oral Pathology at the Federal University of Rio de Janeiro- Brazil from 2020 to 2023. Two oral pathologists reviewed conventional hematoxylin and eosin-stained slides of each case. Immunohistochemical stainings for CK19, Bcl-2, CD138, D2-40, EMA, and Ki-67 were performed in all cases. Case 1 was a 58-year-old man with a 2-year history of painless swelling of the right buccal mucosa, measuring approximately 5cm. Case 2 was of a 44-year-old man with a painful swelling in the left buccal mucosa lasting 3 years with drainage to the oral cavity. Case 3 was of a 74-year-old woman with a painful swelling in the left buccal mucosa of unknown duration. Microscopic evaluation of all 3 cases revealed a cyst lined with a few cell layers composed of columnar palisading basal cells and a corrugated parakeratin surface. The capsule comprised fibrous connective tissue with variable amounts of blood vessels with hemorrhage, nerve bundles, fat tissue, striated muscle fibers, and the absence of pilosebaceous units. No recurrence was observed after complete surgical removal. All epithelial layers of the 3 cases expressed positivity for CK19 and CD138, the basal cells were positive for Bcl-2 and D2-40, and the superficial epithelial layer was positive for EMA. All cases demonstrated a low proliferation index by Ki-67. This study represents a series of 3 cases of STK that affected the posterior buccal mucosa of middle-aged patients from Brazil, sharing histopathological and immunohistochemical features with odontogenic keratocyst.

The Vochysiaceae family in a Cerrado fragment in the Mato Grosso, Brazil

The family Vochysiaceae A.St.-Hil. (Order: Myrtales) has been reported to occur in South and Central America and the equatorial region of West Africa. Six genera and approximately 160 species belonging to this family occur in Brazil. The objective of the present study was to morphologically describe the species of Vochysiaceae that occur in the Cerrado fragment of the Federal University of Rondonópolis (UFR), to present identification keys and boards with images and illustrations, in addition to include taxonomic comments and on the distribution of species. For this, monthly surveys and collections were carried out in the area, which resulted in the description of five species: Qualea grandiflora Mart., Qualea multiflora Mart., Qualea parviflora Mart., Vochysia cinnamomea Pohl and Vochysia divergens Pohl. The present study contributed to expand knowledge about the Vochysiaceae family and the flora of the region, in addition to being able to serve as a subsidy for discussions on the preservation of the Cerrado.

Guest Editorial. Interdisciplinary Approaches for Human Cognition: Expanding Perspectives on the Mind

The quest to decipher the intricate workings of the human brain continues to captivate scientists and researchers worldwide. In this endeavor, the Latin American Workshop on Computational Neuroscience (LAWCN) plays a pivotal role by fostering a vibrant community committed to understanding the intersection of neuroscience, computational approaches, and cutting-edge technological innovations. LAWCN was born in 2012 at the Federal University of Rio Grande do Sul (UFRGS) where it later formally became a biannual event in 2017. Since its beginning, its objective has been to support collaborative learning and knowledge sharing through events hosted in unique Brazilian cities such as Porto Alegre (2017), São João del-Rei (2019), and São Luís de Maranhão (2021).

Optimization of the DNA isolation procedure for assessing the genetic diversity of essential oil roses (Rosa L.)

Background. High content of organic compounds that worsen nucleic acid purification in aromatic plants, as well as the use of such toxic substances as phenol and mercaptoethanol in many protocols for plant DNA isolation, make it advisable to take the above disadvantages into account when optimizing the DNA extraction technique for the work with essential oil rose plants. Material and methods. Rose accessions from the Crimean Federal University’s Botanical Garden, and those from the collection held by the Research Institute of Agriculture of Crimea were included in the study. DNA extraction was done according to a modified CTAB protocol. Effectiveness of the technique was assessed using spectrophotometry, horizontal electrophoresis, and ISSR-PCR. Results. DNA preparations extracted with the modified technique were well visualized on the electropherogram and demonstrated high spectrophotometric values. DNA content was twice as high in preparations isolated with an extraction buffer with PVP, compared to a PVP-free buffer. The concentration was also higher in DNA extracts from stems than that from leaves. Purity parameters expressed by the absorption ratios at wavelengths A260/280 and A260/230 were again higher for DNA extracts from stems isolated with an enriched buffer, the A260/230 ratio falling within the normal range only in DNA extracted from stems in the presence of PVP. Besides, DNA extracts were effectively purified from proteins without phenol or mercaptoethanol, due to double rinsing with a chloroform/isoamyl alcohol (24 : 1) mixture. Conclusion. Using rose stem tissues as the research material, adding 2% PVP to the extraction buffer, and twofold rinsing with a chloroform/isoamyl alcohol mixture made it possible to obtain DNA extracts with high concentrations and purity indices within normal ranges suitable for the ISSR analysis of essential oil rose genetic diversity.

A Spatial Analysis of Coffee Plant Temperature and Its Relationship with Water Potential and Stomatal Conductance Using a Thermal Camera Embedded in a Remotely Piloted Aircraft

Coffee is a key agricultural product in national and international markets. Physiological parameters, such as plant growth indicators, can signal interruptions in these processes. This study aimed to characterize the temperature obtained by a thermal camera embedded in a remotely piloted aircraft (RPA) and evaluate its relationship with the water potential (WP) and stomatal conductance (gs) of an experimental coffee plantation using geostatistical techniques. The experiment was conducted at the Federal University of Lavras, Minas Gerais, Brazil. A rotary-wing RPA with an embedded thermal camera flew autonomously at a height of 10 m and speed of 10 m/s. Images were collected on 26 November 2019 (rainy season), and 11 August 2020 (dry season), between 9:30 am and 11:30 am. Data on gs and WP were collected in the field. The thermal images were processed using FLIR Tools 5.13, and temperature analysis and spatialization were undertaken using geostatistical tools and isocolor maps by Kriging interpolation in R 4.3.2 software. Field data were superimposed on final crop temperature maps using QuantumGIS version 3.10 software. The study found that with decreasing WP, stomatal closure and reduction in gs occurred, increasing the temperature due to water deficit. The temperature distribution maps identified areas of climatic variations indicating water deficit.

Ultrasound-Based Phenotyping for Genetic Selection of Carcass Traits in Oreochromis niloticus: Integrating Imaging Technology Into Aquaculture Breeding.

Recent years have witnessed a remarkable global surge in fish production, with Nile tilapia (Oreochromis niloticus) emerging as a prominent contributor owing to its high demand as a nutritious food source. However, unlike terrestrial species, maintaining genealogical control and collecting phenotypic data in fish farming poses significant challenges, necessitating advancements to support genetic improvement programmes. While conventional methods, such as body measurements using rulers and photographs are prevalent in data collection, the potential of ultrasound-a less invasive and efficient tool for fish measurement-remains underexplored. This study assesses the viability of ultrasonography for genetically selecting carcass characteristics in Nile tilapia. The investigation encompasses data from 897 animals representing 53 full-sib tilapia families maintained in the genetic improvement programme at the Federal University of Lavras. To measure carcass traits, the animals were sedated with benzocaine and ultrasound images were obtained at three distinct points. Subsequently, the animals were euthanised through medullary sectioning for further carcass processing. After evisceration, filleting and skinning, all weights were meticulously recorded. (Co)variance components and genetic parameters of the measured traits were estimated using the Bayesian approach by Gibbs sampling implemented in MTGSAM (Multiple Trait Gibbs Sampling in Animal Models) software. Heritabilities estimated for the studied carcass traits were moderate, ranging from 0.23 to 0.33. Notably, phenotypes derived from ultrasound images demonstrated substantial genetic correlations with fillet yield (0.83-0.92). In conclusion, this study confirms that indirect selection based on ultrasound images is effective and holds promise for integration into tilapia breeding programmes aimed at enhancing carcass yield.

Association between molar incisor hypomineralisation and tooth agenesis: a cross-sectional study in Brazilian children and adolescents.

The aim of the present was to assess the association between MIH and tooth agenesis (TA) in orthodontic patients from the Federal University of Rio Grande do Norte, Natal, Brazil. A cross-sectional study was performed to evaluate the presence of MIH and TA in a sample of 371 pretreatment orthodontic records from patients aged 9-18years. Statistical analyses were performed using the Chi-square and Fisher's exact tests, and logistic regressions. There was a statistically significant association between the prevalence of tooth agenesis and MIH. A higher percentage of third molar agenesis, maxillary premolar agenesis, and mandibular second premolar agenesis was observed among children with MIH-affected teeth. Patients with MIH had a 2.43 times greater chance of third molar agenesis, and a 5.88 times higher likelihood of mandibular premolar agenesis. There is a weak association between MIH and TA. Furthermore, the presence of hypomineralised molars increases the risk of tooth agenesis.

An Appraisal of the Usage of Punctuation Marks by 400-Level English Students in Selected Nigerian Universities

This article analyses 400-level English students’ use of punctuation marks in Ahmadu Bello University Zaria (ABU) and Federal University Gusau (FUG) during the 2023/2024 academic session. The students were given an in-class test to assess their level of knowledge on punctuation. The research questionnaire contained 15 short responses and an essay writing question. The subjects were seated in a class, and each student provided independent responses to validate the data. Fifty students’ scripts were randomly selected from each institution. The test scripts serve as the data for the study. The researchers used a quantitative method to analyse the questions. The study adopts a model proposed by Gass & Selinker (2008), which has six important steps: collecting data, identifying errors, classifying errors, quantifying errors, analysing sources of errors, and remediating errors. The research found that ABU English students’ knowledge of punctuation marks is higher, with ellipsis and dash having 100% correct scores and the semicolon being the least in the ranking scale with 38% correct scores. Federal University Gusau students’ knowledge of the full stop is higher, with 96% correct scores, and the colon is the least with 16%. The study also established that the errors resulting from the misuse of punctuation marks are mostly due to carelessness, which accounts for the misrepresentation of the English students. The article recommends that lecturers handling writing in the universities should ensure that English candidates, being potential teachers, adhere strictly to punctuation rules for more effective communication.

INDICATORS OF OCULOMOTOR ACTIVITY AND CEREBRAL HEMODYNAMICS IN STUDENTS WITH DIFFERENT TYPES OF AUTONOMIC NERVOUS SYSTEM REACTIVITY IN COGNITIVE TASK PERFORMANCE

Background. The current stage of human development is characterized by high dynamics of knowledge accumulation, acceleration of social and technical development. The need to study psychophysiological characteristics of cognitive activity with time limitation increases under these conditions. Time limit can make activity more efficient or less effective. Purpose. To study indicators of oculomotor activity and cerebral hemodynamics of students with different types of autonomic nervous system reactivity during cognitive activity. Materials and methods. The study involved 110 students of the Northern (Arctic) Federal University named after M.V. Lomonosov took part in the study (average age of students 19.0±0.5 years). To identify specific features of ensuring cognitive activity in different time conditions, the type of reactivity of the autonomic nervous system (ANS) was determined in the subjects using the VNS-Spectrum computer complex (Neurosoft). Students performed cognitive tasks without and with time limits. At the same time, eye movements were recorded using the stationary binocular eye tracking system iView X™ RED, 500 Hz, and cerebral hemodynamic parameters were recorded using the Reo-Spectrum 2 hardware and software complex (Neurosoft). The efficiency of cognitive activity of the participants was also assessed. Statistical analysis was performed using the application package IBM SPSS Statistics 22.0. Results. Students with different types of reactivity of the autonomic nervous system had different effectiveness of cognitive activity without time limitation and with time limitation. Students with a sympathotonic type of autonomic reactivity had a higher result in processing visual information under time pressure. These students had more stable statistical relationships between the parameters of oculomotor activity and cerebral hemodynamics. Representatives with a vagotonic type of reactivity of the autonomic nervous system had the lowest rates of success in cognitive activity. These students showed less stable structure of statistical relationships between oculomotor activity and cerebral hemodynamics Conclusion. General and specific changes in cerebral hemodynamics and oculomotor activity, features of the effectiveness of cognitive activity under time constraints in young people with different types of autonomic nervous system reactivity were identified.

Evaluating the Effects of Centralization and Decentralization on Strategic Implementation at Federal University Wukari

Evaluating the Effects of Centralization and Decentralization on Strategic Implementation at Federal University Wukari

Physical attributes of the soil in an area under Forage Palm management in the Agreste of Alagoas

The objective was to evaluate soil density (Ds) and penetration resistance (RP) in an experimental area with forage palm management. The study was conducted in an experimental area belonging to the Federal University of Alagoas - Arapiraca Campus. To determine the Ds, undeformed samples were collected at three points within the plot, each point with three different depths (0-10; 10-20 and 20-30 cm). To determine the PR, the impact penetrometer was used at depths of 0-60 cm. For comparison purposes, samples were collected in a native forest area. The data were submitted to analysis through the statistical program R and Tukey test at 1 and 5% probability. Ds ranged from 1.59 to 1.63 g cm-3, not differing significantly. The lowest densities were obtained in the surface layer, influenced by the contribution of organic matter and greater presence of roots. In all depths evaluated, the Ds values were lower for the native forest area. In relation to PR, the values gradually increased up to the first 20 cm of depth for most treatments, reflecting the influence that the non-soil revolution causes in the most superficial layers. Therefore, Ds did not differ significantly. The 0-10 cm layer showed the lowest Ds values. The native forest showed the lowest Ds values at all depths when compared to the managed area. PR gradually increased to the first 20 cm of depth for most of the treatments analyzed.

ANÁLISE DA LUA NOVA lV

Through the astronomical calendar of UNIFEI - Federal University of Itajubá, we will research the coincident hours and minutes in different data. What do these data teach us? We will also see a new approach in counting the Lunations that can be done even by teenagers who have the correct tool available in their region. The difference between the astronomical calendar and the visual calendar, the latter used thousands of years ago, as the telescope had not been invented to help them and as the visual calendar is still used in relation to the lunations, turns of the Moon around the Earth.

Shaping Public Servant Well-Being: Lessons from Brazil's SIASS Program.

This study aims to identify how the health and well-being of public servants are promoted and managed at the Federal University of Technology-Paraná (UTFPR). The Integrated Subsystem for Attention to the Health of Public Servants (SIASS), established by the federal government in 2009, is an initiative that integrates health actions, work safety, and social assistance. This qualitative study utilized the analysis of institutional documents and semi-structured interviews with managers involved in SIASS implementation at the UTFPR. The analysis reveals that, despite the creation of the SIASS, the UTFPR faces challenges such as resource scarcity, reliance on procurement processes, and a reactive rather than preventive approach to occupational health issues. The structural diversity across campuses and the lack of systematic evaluation of working conditions further limit the effectiveness of policies. It is recommended that the UTFPR adopt a more integrated, data-driven, and proactive approach to occupational health management. Strengthening interinstitutional partnerships, optimizing resource allocation, and developing continuous evaluation systems are essential steps to ensure a work environment that effectively promotes the health and well-being of its employees.

Profiling intimate partner violence in booked pregnant women at Alex Ekwueme Federal University Teaching Hospital Abakaliki and associated puerperal depressive sequelae: a prospective cohort study

BackgroundIntimate partner violence (IPV) in pregnancy is a physical, sexual, psychological or economic harm by a current or former partner or spouse on a pregnant woman. It is a global public health problem that is common but underreported. Women are at increased risk of psychiatric illness in pregnancy and after delivery with the risk of major depressive disorder being highest during the postpartum period. Intimate partner violence in pregnancy may worsen this problem.ObjectivesThe objectives of the study were to determine the prevalence of intimate partner violence (IPV) in pregnancy, incidence of postpartum depression and the relationship between intimate partner violence, delivery outcomes and postpartum depression among booked pregnant women at Alex Ekwueme Federal University Teaching Hospital Abakaliki, Ebonyi state, Nigeria (AEFUTHA).Study designThis study was a prospective cohort study.SettingThe antenatal clinic, antenatal ward, labour ward, postpartum clinic and under five clinic of Alex Ekwueme Federal University Teaching Hospital Abakaliki, Ebonyi state, Nigeria were used for the study.Method One hundred and thirty-seven booked pregnant women that received antenatal care at AEFUTHA who met the inclusion criteria and consented to the study, were recruited from 37 weeks to 41 weeks gestation and screened for intimate partner violence and depression. Those with depression were referred for treatment while those that met the inclusion criteria were followed up to delivery and the delivery outcomes documented. They were also followed up to six weeks postpartum when they were screened for postpartum depression. Data were collated, tabulated and then statistically analysed using Statistical Package for Social Science (SPSS) software (version 25, Chicago II, USA). Numerical variables including participant’s age, parity and gestational age were presented as mean, median, frequencies and standard deviation (Mean ± S.D), while categorical variables including occupation, level of education, social class and family type were presented as numbers and percentages. Chi-square test (X2) and relative risk was used for comparison between groups for categorical variables while Fisher’s exact test was used when Chi-square test (X2) was not suitable. Binary regression analysis was used to determine the relationship between intimate partner violence and postpartum depression. A P value of ˂0.05 is considered statistically significant.ResultsThe prevalence of intimate partner violence was 52.6%, as 72 out of the 137 women recruited endured intimate partner violence. The major risk factors for intimate partner violence in the study were low level of education, low social class, polygamy and unemployment. The general incidence of postpartum depression was 29.93% while the incidence among women with intimate partner violence was 56.94%. Women with emotional violence and verbal abuse had a five-fold increase in the incidence of postpartum depression. Sexual violence and physical violence were not statistically significant risk factors for postpartum depression.ConclusionIntimate partner violence is common as seen from the study. It is a significant risk factor for postpartum depression. Women that are emotionally and verbal abused are more likely to have postpartum depression. Screening pregnant women for intimate violence may identify those at risk and allow for proper interventions.

Bedaquiline versus injectable containing regimens for rifampicin-resistant and multidrug-resistant tuberculosis in a reference center in Brazil – a real-world evidence study using a retrospective design

BackgroundDrug resistance (DR) is one of the several challenges to global tuberculosis (TB) control. The implementation of bedaquiline (BED) for DR-TB after more than 40 years was expected to improve treatment outcomes as well as microbiologic conversion and adverse events (AE) occurrence.MethodsRetrospective cohort study based on secondary data of patients with rifampicin-resistant (RR) or multidrug-resistant (MDR) TB reported to the Outpatient Clinic of Mycobacterial Diseases of the Thorax Diseases Institute – Federal University of Rio de Janeiro - Brazil, between 2016 and 2023. We aimed to evaluate microbiologic conversion, AE and TB treatment outcomes and compare them according to the treatment regimen used for RR/MDR-TB patients under routine conditions [Injectable Containing Regimens (ICR) versus BED Containing Regimens (BCR)]. Logistic regression and survival analysis using Cox regression and Kaplan Meier curve were used for statistical analysis.ResultsOf the 463 DR-TB patients notified during the study period, 297 (64.1%) were included for analysis (ICR = 197 and BCR = 100). Overall AEs were more frequent (83.7 vs. 16.3%, p < 0.001) and occurred earlier in the ICR group (15 days vs. 65 days, p = 0.003). There were no cases of cardiotoxicity requiring interruption of BED treatment. None of the regimens of treatment tested were associated with smear or culture conversion on Cox regression analysis (p = 0.60 and 0.88, respectively). BED-containing regimens were also associated with favorable outcomes in multivariable logistic regression [adjusted odds ratio (aOR) = 2.63, 95% confidence interval (CI)1.36–5.07, p = 0.004], as higher years of schooling, primary drug resistance, and no previous TB treatment. In the survival analysis, BCR was inversely associated with the occurrence of AE during treatment follow-up (aHR 0.24, 95% CI 0.14–0.41, p < 0.001). In addition, TB treatment regimens with BED were also associated with favorable outcomes (aHR 2.41, 95% CI 1.62–3.57, p < 0.001), along with no illicit drug use and primary drug resistance.ConclusionsThe implementation of a fully oral treatment for RR/MDR-TB in a reference center in Brazil was safe and associated with favorable outcomes under routine conditions, despite social, demographic, and behavioral factors that may influence TB treatment completion.

Evaluating the suitability of Brazilian native species for riverbank stabilization and protection

In Brazil, soil and water bioengineering techniques have mainly been used for hydraulic stabilization, water course management and to re-establish the vegetation in fluvial environments. In these techniques plants are considered as an important structural component and their use requires adequate selection. The present study aimed to evaluate the root system and shoot development traits of the Allamanda cathartica L., Ludwigia elegans (Camb.) H. Hara and Sesbania virgata (Cav.) Pers species. The experiment was conducted in a greenhouse at the Laboratory of Soil Bioengineering at the Federal University of Santa Maria. The following variables were evaluated after 120 days: the survival rate, average height, average root collar diameter, average number and sum of shoot length per plant, average number of primary roots and the sum of primary root length, length of the largest root and root dry mass per plant. The percentage of fine roots and coarse roots and distribution of root dry mass percentage in soil depth were also evaluated. The results confirm the suitability of the L. elegans, S. virgata and A. cathartica species for riverbank stabilization and protection in soil and water bioengineering works.

7476 Clinical, Pathological and Biochemical Characteristics of patients with Neuroendocrine Neoplasms (NENs) at a University Hospital in Belo Horizonte, Brazil

Abstract Disclosure: R.D. Romanowski: None. F.P. Ribeiro: None. T.T. Mello: None. B.S. Soares: None. J.B. Drummond: None. Neuroendocrine neoplasms (NENs) are a group of rare, heterogeneous, and potentially aggressive neoplasms, whose incidence is on the rise, largely due to advances in diagnostic methods that allow for more precise and early identification. A recent comprehensive review focusing on the epidemiology, incidence and prevalence of NENs described global findings, however, it did not include any data from Latin America, particularly after WHO 2019 digestive system tumours classification. Methods: We carried a retrospective analysis in a single center aiming to evaluate different clinical, pathological and biochemical characteristics of a cohort of patients with NENs followed at the Neuroendocrinology Outpatient Clinic of the Federal University of Minas Gerais, Brazil, who were diagnosed between the years of 2004 and 2023. Results: The study sample (n=30) included 13 female patients (43%). The median (range) age at diagnosis was 42 (19-73) years old. The most common primary sites observed in the studied population were the pancreas (38%) and the stomach (24%). Twenty three percent of the patients had MEN1 associated NENs. Fourteen tumors (45%) were classified as G1 NENs, 7 tumors (23%) were classified as G2 NENs and two tumors (6,7%) were classified as neuroendocrine carcinomas, while tumor grade classification was not feasible in 7 patients (23%). One third of the patients had functional tumors and metastatic disease was present in 60% of the cases at the time of diagnosis. Conclusion: In general, the epidemiological characteristics here described for our patients align with the global trend. Concerning gender, we observed a higher prevalence of these tumors in men (57%), consistent with the male predominance of up to 3 times over females described around the world. Our patient population seems to be younger than the mean age reported in different case series. Tumoral grade classification was not feasible in a high proportion of patients and despite the high prevalence of well differentiated and low-grade NENs, metastases were commonly seen at diagnosis, in accordance with the literature. Presentation: 6/2/2024

Virtual simulation for teaching cardiology in nursing: a scoping review protocol

IntroductionVirtual simulation (VS) can be an effective learning strategy in the context of nursing education on cardiovascular disease; however, its use in teaching cardiology in nursing is less studied. The...

AS ESTRATÉGIAS DE MARKETING E COMUNICAÇÃO NO CONTEXTO DA CULTURA DA CONVERGÊNCIA MIDIÁTICA – O CASO DA BARRA DOS COQUEIROS

This study presents the results of research conducted between 2021 and 2022, titled “Marketing and Communication Strategies in the Context of Media Convergence – The Case of Barra dos Coqueiros,” led by the Research Laboratory in Entrepreneurship and Innovation at the Federal University of Sergipe (LEI-UFS). The project is linked to the PQ2 Fellowship from CNPq (no. 312260/2020-2) and PIBIC, and is part of a series of studies investigating marketing and communication strategies in different regions, such as Aracaju and São Cristóvão. The main objective was to analyze the profile of entrepreneurs in the city of Barra dos Coqueiros and the communication strategies they adopt. The methodology included a theoretical review and a qualitative study, using online semi-structured interviews. The analysis of the collected data revealed that the city has 1,423 individual micro-entrepreneurs, of which 51.31% are women and 48.69% are men, with an average age of 39 years. The study is justified by the need to support micro-entrepreneurs amid the region’s population growth, driven by the construction of new luxury condominiums. Additionally, it aims to foster the ecosystem of entrepreneurship and innovation, ensuring that these entrepreneurs are supported in complying with Brazilian laws and developing their businesses.