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FELIPE FERREIRA SOUSA JUNIOR
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Cerrado soil enrichment for application in sustainable materials
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Líder : AURIZANGELA OLIVEIRA DE SOUSA
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MIEMBROS DE LA BANCA :
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ADAILSON FEITOZA DE JESUS SANTOS
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AURIZANGELA OLIVEIRA DE SOUSA
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ROBERTO BAGATTINI PORTELLA
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Data: 30-ene-2023
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Resumen Espectáculo
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Soil-cement mixtures are, even today, despite more modern techniques, one of the most used materials in civil construction. There is great use of Portland cement in it, in order to achieve characteristics of resistance to compression and low water absorption. The objective of this work was to investigate the physical, mechanical and performance changes promoted to the soil-cement mixture with chemical and microbiological enrichment, aiming at mineral bioprecipitation (MICP, from the English MicrobiallyInduced Calcium Carbonate Precipitation). For this purpose, the following materials were established: Portland cement CP II-Z-32 and Cerrado soil for the mixture (in a 1:13 ratio). Three mix were used in the research: (i) unenriched or reference or R; (ii) enriched with urea solution (40 g.L-1 ) or U; (iii) enriched with inoculate of Sporosarcina pasteurii, strain ATCC 11859, in growth syrup (40 g.L-1 ) or E. Test specimens (CP) with reduced geometry (50x100 mm) were molded from each of the established traits, using normal Proctor energy, with curing in a humid chamber together with aspersion, and measuring the compressive strength (RCS), strain at break (DRU) and water absorption (AA), according to the parameters established in the norm, at the ages of 7, 14 and 28 days. The CP were also evaluated by X-ray diffraction (DRX) and infrared absorption spectroscopy (FT-IR) to analyze the presence of calcium carbonate and other carbonate precipitates. The data obtained were confirmed in their normality of distribution by the Shapiro-Wilk test and homoscedasticity by the Levene test, with a two-way Analysis of Variance for Repeated Measures (MANOVA), followed by the Bonferroni post hoc. The results obtained indicated that there were significant differences between the mix at the ages tested, as well as interference in their deformation. Relevant significant difference (p≤0.05) was found for RCS between the R, U and E mix at the ages of 7 days and between the R and U traits at the ages of 28 days. For AA, a significant difference (p≤0.05) was found between the ages of 7 and 14 days for mix R, U and E; at the age of 28 days between the R and U traits. The DRU was also analyzed, with observation of the occurrence of a deformation level at rupture when in ultimate stresses, for the E mix, which indicates a statistically relevant performance gain (p ≤0.05) of the material, in relation to the R. The DRX and FT-IT analyzes also demonstrate that, for the enriched samples, there was deposition of calcium carbonates as well as other forms of calcium carbonate junction, including hydrated lime. Thus, having the soil-cement mixture enriched as raw material, it is possible to indicate such a microbiological technique as an alternative and sustainable cementing strategy for reducing environmental pressure, mainly seen on the Cerrado biome, when producing and applying materials cementitious.
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CORNELIO SOUZA SANTIAGO
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Histology and hormonal regulation of mammary glands and ovaries of Artibeus lituratus during reproductive phases.
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Líder : MATEUS RODRIGUES BEGUELINI
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MIEMBROS DE LA BANCA :
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CAROLINA CARVALHO DE SOUZA
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LARISSA PAOLA RODRIGUES VENANCIO
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MATEUS RODRIGUES BEGUELINI
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Data: 30-ago-2023
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Resumen Espectáculo
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Artibeus lituratus is an important neotropical frugivorous bat species belonging to the family Phyllostomidae. Despite its widespread distribution, there are no detailed reproductive studies on the mammary glands of this species. Thus, the aim of this study was to analyze and characterize the histology and hormonal regulation of mammary glands and ovaries of Artibeus lituratus during reproductive phases. For chapter one, twenty sexually mature females were collected and divided into 3 sample groups according to reproductive status (non-reproductive, advanced pregnancy, and lactating), and for chapter two, thirty sexually mature females were collected and divided into 6 sample groups according to reproductive status (non-reproductive, early pregnancy, mid-pregnancy, late pregnancy, lactating, and pregnant lactating) and subjected to anatomical, histological, morphometric, immunohistochemical (ERα, PR, PCNA, P63, α-actin, LHR, and FSHR), and serum assays for progesterone, estradiol, follicle-stimulating hormone, and luteinizing hormone. The results demonstrated that the mammary glands of A. lituratus are lateralized and exhibit a morphology very similar to that described for mammals, consisting of simple cuboidal epithelium, connective tissue, and adipose tissue. The action of hormones progesterone via PR and estradiol via ERα coordinates the entire development and differentiation of secretory epithelium during advanced pregnancy and lactation. All data indicate that A. lituratus possesses promising characteristics, and in the future, it can be used as an experimental animal for mammary gland studies. In the ovaries, the results showed that serum concentrations of FSH and LH are constant and minimally variable among the groups. The action of these hormones on the ovaries of A. lituratus creates a highly interactive microenvironment, with the development of follicles in different stages. The majority of ovarian structures respond to LH and FSH. The Theca, granulosa, and stroma exhibited greater variation in FSHR and LHR expression, while the corpus luteum expressed them in all cells from early to late pregnancy. There was no dominance in receptor expression among the ovaries of A. lituratus.
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5
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JULIANA FILGUEIRA FERRAZ
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Analysis and morphophysiological and hormonal characterization of the female reproductive organs of Molossus molossus (Molossidae - Chiroptera) in different reproductive phases.
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Líder : MATEUS RODRIGUES BEGUELINI
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MIEMBROS DE LA BANCA :
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MATEUS RODRIGUES BEGUELINI
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LARISSA PAOLA RODRIGUES VENANCIO
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CAROLINA CARVALHO DE SOUZA
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Data: 30-ago-2023
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Resumen Espectáculo
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Popularly known as "free-tailed bat," Molossus molossus is a bat species well known in Brazil due to its high representativeness (large number of colonies and specimens) and its easy presence in house attics, being dispersed throughout much of the country, and can be found in more than 16 Brazilian states. It is known that females of this species have a morphofunctional asymmetry in the reproductive tract, but there are no studies describing the morphophysiological characteristics and hormonal control of reproduction in this species. Therefore, the aim of this study was to analyze and describe the morphophysiological and morphometric variations and hormonal control of the female reproductive organs of M. molossus during its different reproductive phases, seeking to evaluate the impact and modifications that different reproductive hormones trigger on this reproductive tract. For this purpose, 20 sexually adult females were captured and divided into 4 sample groups (n=5): 1. Non-reproductive females (NON); 2. Early pregnancy (PI); 3. Advanced pregnancy (PII); 4. and Lactating (LAC) females. Blood samples were collected from all specimens for hormonal measurements of estradiol and progesterone, and the reproductive organs were removed and processed for histological analysis, three-dimensional reconstruction, and immunohistochemical analysis to locate estrogen alpha receptors (ERα) and progesterone receptors (PR), 3β-hydroxysteroid dehydrogenase (3β-HSD) enzyme, and proliferating cell nuclear antigen (PCNA) antibody. The results show that the female reproductive system of M. molossus is composed of ovaries, a short bicornuate uterus, slightly convoluted uterine tubes, and vagina. The reproductive system presents a distinct morphofunctional asymmetry, with a marked dextro-dominance in which the right side is more developed than the left. The ovaries have a large number of interstitial glands and a small but persistent corpus luteum. Ovulation is simple, unilateral, and preferential, occurring exclusively in the right ovary. Follicular development in the left ovary usually does not progress beyond the secondary stage. Implantation is fundic and preferential, occurring exclusively in the right uterine horn. The placenta is formed with two distinct chorioallantoic portions, one diffuse endotheliochorial, which covers the entire uterine cavity and regresses in the final stages of pregnancy, and the principal discoidal hemochorial portion, formed at the site of implantation. The uterine cervix presents a pseudostratified epithelium, while the vagina has a slightly keratinized stratified epithelium. Additionally, the uterus is regulated by the hormones estradiol and progesterone and their respective hormone receptors. The uterine horns showed a difference in expression for hormone receptors, which may be one of the causes of the dextro-dominant asymmetry present in the uterus. Apparently, the endometrial glands and epithelium can produce progesterone, which would help in local uterine maintenance during the phases of the cycle when the corpus luteum and placenta are not present. It seems that the expressions of ERα and PR are synchronized, influencing the reproductive cycle of the species.
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6
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LARISSA AIRES DOS SANTOS DE OLIVEIRA
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Evaluation of the phytochemical profile and activity on the fungus Fusarium oxysporum from the leaf and stem extract of Salacia crassifolia (Mart. ex Schult.) G. Don.
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Líder : KATYUSCYA VELOSO LEAO
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MIEMBROS DE LA BANCA :
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JOAO LUIZ COIMBRA
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KATYUSCYA VELOSO LEAO
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LUCIANA LUCAS MACHADO
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VALDEILSON SOUZA BRAGA
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Data: 15-sep-2023
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Resumen Espectáculo
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Brazil stands out as a country of remarkable biodiversity, with impressive richness in terms of species count and the complexity of its biomes. Among these, the Cerrado biome excels due to the diversity of its landscapes, flora, and fauna. Among the countless species present in the Cerrado, we can mention Salacia crassifolia (Mart. ex Schult.) G. Don., commonly known as bacupari, cascudo, or saputá, which holds significance due to its multiple uses, including culinary, medicinal, and landscaping purposes. Since ancient times, the properties of plants have been harnessed for various purposes, including the search for alternatives to control phytopathogens through plant extracts containing secondary metabolites with potential antifungal properties. Despite the studies already described, there is a gap in research regarding the antifungal potential of the species in question. Hence, there is a need to investigate the antifungal activity of extracts from native plants of the Cerrado, aiming to identify and comprehend the secondary metabolites with such properties. This is a pioneering study in assessing the effects of stem bark and leaf extracts of S. crassifolia, as the species lacks studies directed at the activity of phytopathogenic fungi in relation to its ethanol extracts. With the objective of identifying and evaluating the phytochemical profile and activity against phytopathogenic fungi of the leaf and stem ethanol extracts of Salacia crassifolia, samples of bark and leaves were collected from two matrices located in the rural area of the Western Bahia Municipality. To determine the phytochemical profile of the extracts (EES and EEL), the methodology proposed by Barbosa and colleagues (2001) was employed. Regarding the assessment of the extract's effect on mycelial growth, a randomized bioassay with four repetitions was conducted, using an experimental unit consisting of three Petri dishes. The results of this study offer new perspectives concerning the utilization of S. crassifolia as a potential source of substances with antifungal properties.
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TERLY GABRIELA QUIÑONEZ FUENTES
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Spatio-temporal assessment of the water quality of the Ondas and Grande rivers: a multivariate approach based on physico-chemical and microbiological characteristics,
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Líder : ROBERTO BAGATTINI PORTELLA
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MIEMBROS DE LA BANCA :
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ROBERTO BAGATTINI PORTELLA
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JOSE DOMINGOS SANTOS DA SILVA
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NAIMARA VIEIRA DO PRADO
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Data: 28-sep-2023
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Resumen Espectáculo
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The urbanization of rivers due to rapid population growth and temporal variations are factors that influence the characteristics of water quality. Further studies to understand these variations need to be developed. Thus, the aim of this study was to assess the space-time variation in water quality in the Grande and Ondas rivers in the city of Barreiras, Bahia, Brazil. Monitoring was conducted over one year, with water samples collected at 11 points distributed along the rivers. Eight physicochemical parameters (Electrical Conductivity, pH, alkalinity, apparent and true color, turbidity, Dissolved Oxygen, and Biochemical Oxygen Demand) and three microbiological indicators (heterotrophic bacteria, total coliforms, and thermotolerant coliforms) were analyzed. Space-time variation was evaluated using multivariate techniques, Principal Component Analysis/Factor Analysis (PCA/FA), and Hierarchical Cluster Analysis (HCA). The PCA/FA results highlighted nine of the eleven parameters as the main drivers of water quality variations, with the highest increases observed during the rainy season, particularly at points influenced by sewage discharge and urban areas. HCA grouped the results from the 11 points into three main groups: Group 1 corresponded to points influenced by sewage discharge, Group 2 grouped points mainly influenced by urban areas, and Group 3 included points in rural areas. From these groupings, the negative influence of urbanization on statistically significant variations between groups and periods was observed, with the most degraded conditions in Group 1 and the best conditions in Group 3. Evaluation of variations between monitoring periods showed that precipitation significantly impacted the increase or decrease of the parameters evaluated due to surface runoff associated with urbanization and increased river flow.
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9
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ANDERSON PEREIRA
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Study on native plants with ornamental potential in the cerrados of Bahia
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Líder : ANA MARIA MAPELI
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MIEMBROS DE LA BANCA :
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ANA MARIA MAPELI
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JULIANA GASTALDELLO RANDO
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CLARICE APARECIDA MEGGUER
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Data: 29-sep-2023
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Resumen Espectáculo
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Due to the need to view the Cerrado with care, a study was conducted on the ornamental potential of native species from the Cerrado in Bahia, considering two aspects: landscaping and cut flowers. It is believed that introducing native plants into people's lives through gardens and arrangements can contribute to increased awareness and appreciation of native flora, thereby assisting in biodiversity conservation. To do this, the Serra da Bandeira in Barreiras, Bahia, was selected, which presents two phytogeographic contexts of the Cerrado: typical Cerrado and rocky outcrop Cerrado. The landscaping prospecting study was conducted between February and July 2023, with monthly excursions along existing trails. The target species were collected for documentation in the BRBA Herbarium. In the field, data on reproductive phenology, habit, environment, light conditions, leaf morphology, flowers, and fruits were analyzed. Additionally, threat level and endemism were considered through analyses of online databases. The cut flower study focused on Calliandra dysantha Benth. To assess longevity, flower stems were collected and subjected to the following bioassays: collection time (08h – 09h; 11h – 12h; and 17h – 18h), different floral opening stages (bud, pre-anthesis, and anthesis), the effect of leaves on storage, and sensitivity to conditioning in a sucrose vase solution (bud: 0.0%, 0.5%, and 1.0%; inflorescence in anthesis: 0%, 1%, 2%, 5%, and 10%). Daily measurements were taken for fresh mass loss (%) and volume of absorbed solution (mL). For carbohydrate metabolism characterization, inflorescences in anthesis and their respective leaves were collected at different times of the day (early morning and late afternoon) and at different floral opening stages (bud, pre-anthesis, anthesis, and senescent); soluble sugars were extracted in 80% alcohol and quantified for total soluble sugars (TSS), reducing sugars (RS), and non-reducing sugars (NRS). After prospecting, 36 species with landscaping potential were identified, with four of them exclusive to the Cerrado domain, and none under threat. In the end, 15 species were recommended for multifunctional use (gardens and pots), and 21 species for garden use. Regarding C. dysantha, the species has a lifespan of two days. It is recommended to collect the stems in the bud stage in the afternoon, store them without leaves, and in a vase solution containing 0.5% sucrose. Carbohydrate metabolism studies indicate that inflorescences in the pre-anthesis stage contain higher levels of TSS and NRS, which are related to providing energy for the completion of floral opening. Therefore, it is evident that there are several native Cerrado species with ornamental potential, and C. dysantha has not yet proven viable for cut flowers due to its durability. However, this study provides a foundational knowledge base for further research on the floral physiology of the species.
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WEBER PEREIRA NOGUEIRA
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Paths to a productive forest: impacts of plant extractivism on the structure, composition and ecological dynamics of the Bahian Cerrados
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Líder : LUCI FERREIRA RIBEIRO
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MIEMBROS DE LA BANCA :
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ANA ELIZABETE LOPES RIBEIRO
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LUCI FERREIRA RIBEIRO
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PAULO ROBERTO BAQUEIRO BRANDAO
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Data: 07-dic-2023
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Resumen Espectáculo
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The collection, direct use and commercialization of native flora resources are activities practiced, above all, by traditional communities, linked to sociocultural, identity and economic issues. The removal of parts of plants for medicinal and woody use and for agro-industries is a practice that is very present in the Cerrado of Western Bahia, practices that are intrinsic to the cultural formation of these places. However, with the increase in commercial demand for extractive products, exploitation may be carried out inappropriately, causing, in some cases, a significant reduction in natural populations of the species used. In this sense, this work aims to evaluate the effect of extractive activities on the structure and organization of populations and natural communities and point out indicators for the construction of a sustainable management protocol for extractive species. Specifically, this work aims to ecologically characterize the native species Dimorphandra mollis Benth, a focus of extractivism, with potential for commercialization of non-timber products, used by the rural community of Almas. To this end, the characterization of the structure and productivity of populations in natural communities, the structure and productivity of populations in extractive areas, as well as the phytosociological attributes of these populations within the aforementioned systems were considered as ecological attributes. Furthermore, the objective was to characterize the landscape surrounding the extractive areas, considering relevant aspects, such as: presence and phytophysiognomic identity of forest fragments, human occupation, direct area of operation of the West East Integration Railway (FIOL) and other projects. From this perspective, extractivism is a common activity in the areas of influence of FIOL works in São Desidério and this work assumes crucial relevance with regard to the characterization of sustainable extractivism activity, and can, therefore, be a focus activity for compensation projects environment that value local cultural practices. The research was carried out in the community of Almas, belonging to the municipality of São Desidério, Bahia, local extractivists. Data collection on populations of native species in the Cerrado of Western Bahia was carried out by establishing continuous plots in the areas of influence of the communities (extractive areas and control areas), based on phytosociological analysis, NDVI (Index of Vegetation by Normalized Difference) and morphometric parameters of fruits. It was found that extractive activity interferes with the structure and forest composition of the Cerrado area, presenting results of phytosociological parameters with significant differences between areas. The landscape analysis showed a marked difference between the areas, indicating that extractive activity contributes to the structural disconfiguration of the landscape with dominance of D. mollis to the detriment of low floristic diversity in the sampled fragment. Furthermore, significant differences were observed in morphometric variables and fruit production of D. mollis between areas. Based on the ecological indicators evaluated in this work, it was possible to develop a protocol of good management practices to benefit both the extractive activity and the focus species, based on suggestions for potential strategies to promote and/or accelerate the area's restoration process. in natural regeneration.
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CARLA GISELE DOS SANTOS CARVALHO
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Impactos Ambientais a partir da Construção da FIOL: Avaliação do uso e cobertura do solo no bioma Cerrado em trechos de São Desidério - Ba’
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Líder : ROBERTO BAGATTINI PORTELLA
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MIEMBROS DE LA BANCA :
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JOSE YURE GOMES DOS SANTOS
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ROBERTO BAGATTINI PORTELLA
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SUZY MAGALY ALVES CABRAL DE FREITAS
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Data: 15-dic-2023
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Resumen Espectáculo
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Anthropogenic actions can trigger significant environmental impacts on the environment, even more so when they are associated with land use and occupation, such as the construction of land transport modes. In this sense, the implementation of the West-East Integration Railway - FIOL, considered a project that has extensive physical infrastructure, could generate environmental impacts from its construction. Therefore, the present study sought to evaluate land use and coverage in FIOL's Area of Direct Influence at points of environmental and social relevance in order to evaluate existing environmental impacts. The study area comprises the FIOL Area of Direct Influence, located in a stretch between the villages of Estiva and Almas, São Desidério – BA. Field visits were carried out to characterize the area and identify the classes to be evaluated. Land use and cover was evaluated through supervised classification of spatial images on the Google Earth Engine platform. Images made available by the satellite LANDSAT/LE07/C02/T1_L2 and LANDSAT/LC08/C02/T1_L2 from the months of April and June of the years 2012 and 2022 were used, referring to the period before and after the construction of this section of the railway. The classifications were carried out using the Random Forest (RF) algorithm made available by the Google Earth Engine cloud platform. The classes chosen for the digital classification process were: Class 1 (water bodies); Class 2 (natural vegetation cover); Class 3 (Anthropized vegetation cover); Class 4 (anthropic environments) and Class 5 (exposed soil). Respectively, the identification and assessment of environmental impacts was also carried out using the Leopold matrix. The results regarding land use and occupation show that over a 11 year period there was a significant reduction of 9.5% in native vegetation and an increase of around 10% in areas with exposed soil in FIOL's Area of Direct Influence. With the implementation of the railway, it was noticeable the advance on new previously preserved natural areas, which were degraded, mainly in areas of greater susceptibility to environmental damage, such as APPs and in places where there was intense earth movement, altering the landscape. In this context, the conversion of native areas into agricultural areas, and the presence of the railway as a mechanism responsible for suppressing previously isolated areas, was considered a significantly impactful factor. In relation to the assessment of the impact matrix and the activities carried out during the implementation of FIOL, the suppression of native vegetation was the activity with the highest level of significance. This activity impacted different environmental aspects, which culminated in environmental impacts related to the loss of biodiversity, fragmentation of habitats and the emergence of erosion processes. As a way of minimizing the environmental impacts described, measures to mitigate and compensate for the effects of transport infrastructure on biodiversity are essential, specifically in relation to environmental impacts relating to flora and fauna.
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12
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RONIVON PEREIRA RODRIGUES
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Caminhos do Oeste Tourist Region: Trajectory institutional and socioeconomic contributions
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Líder : PAULO ROBERTO BAQUEIRO BRANDAO
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MIEMBROS DE LA BANCA :
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IANN DELLANO DA SILVA SANTOS
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PAULO ROBERTO BAQUEIRO BRANDAO
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ROBSON SOARES BRASILEIRO
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Data: 22-dic-2023
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Resumen Espectáculo
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Every year, tourism is responsible for transporting millions of people between diferente locations on the planet, seeking leisure, entertainment and visiting various attractions. Its implementation has great complexity and relevance in aspects, highlighting the socioeconomic aspect, as it encompasses public and private investments, which seeks to generate revenue, jobs and income in the various locations in which it is carried out. Planning around its development is necessary, carried out primarily by everyone involved in its practice. Given the context, Brazil and Bahia have been developing public policies over time with the intention of categorizing, organizing and managing tourist areas in their respective territories. Both adopted the concept of a tourist region, comprising a set of municipalities with an interest in the development of tourist activity based on one or more historical, cultural, economic and/or geographic characteristics. Base for implementing the Tourism Regionalization Program (PRT), within the scope of the National Tourism Plan (PNT). At this juncture, the Caminhos do Oeste tourist region was created in 2004, currently made up of eight municipalities, namely: Barreiras, Bom Jesus da Lapa, Caetité, Correntina, Cocos, Formosa do Rio Preto, Jaborandi and São Desidério. In view of the above, the present work aims to diagnose the socioeconomic implications promoted by the institutionalization and development of tourist activities in Caminhos do Oeste. The research is exploratory and descriptive, with a qualitative approach, carried out in two stages: Literature review for theoretical contextualization about tourism and tourist regionalization, identification and analysis of legal instruments related to its planning, institutional organization and public policies in the country focused on the theme and the historical, environmental, socioeconomic, infrastructure and territorial characterization of the study area; Construction of the institutional and socioeconomic profile of the Caminhos do Oeste tourist region, through the identification and characterization of the legislation and institutionalization of tourism in the municipalities that make up or comprised the tourist region and the survey, systematization and tabulation of secondary data to present related socioeconomic indices tourism in the state, regional and municipal context. It was identified that between 2004 and 2022 there were six changes regarding the number and municipalities that made up the tourist region in the different PRT publications during this period. At the state level, Caminhos do Oeste presented modest socioeconomic results, especially when analyzing their participation in the total revenue from ACTs and the contribution of formal jobs. Among the municipalities, in addition to the diversity of tourist attractions, different realities were identified regarding institutionalization and socioeconomic gains arising from the tourist activity carried out in them. To make better use of the tourist potential of Caminhos do Oeste, it is recommended that COMTUR participate more effectively in carrying out the study on the tourism situation in the respective municipalities; engagement of all sectors linked to the efficient operation and development of tourism in the region, thus providing tourists with a quality activity based on tourism that prioritizes sustainability, but without neglecting the profitability that the activity can provide to those involved and/or service providers. services in these municipalities.
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