https://repositorio.uema.br/jspui/handle/123456789/1878 Sun, 12 Jul 2026 06:40:58 GMT 2026-07-12T06:40:58Z http://repositorio.uema.br:80/retrieve/ee20be4f-abf8-4ea6-83ce-c680ae8abcc1/uema.jpg https://repositorio.uema.br/jspui/handle/123456789/1878 https://repositorio.uema.br/jspui/handle/123456789/6294 Título: Os impactos socioambientais provocados pela produção de energia solar fotovoltaica: um estudo de caso da comunidade Salinas no município de Ribeira do Piauí Abstact: Given its favorable natural characteristics and governmental incentives, Piauí has become a major attractive center for investments related to solar energy production. Celeo Redes Brasil, which has a working solar park in São João do Piauí, is working on the construction of a new one, with an investment of approximately 1.5 billion Brazilian reais. Ibitu Energia opened the Caldeirão Grande 2 energy complex in the municipality of Caldeirão Grande in April 2023, with an installed production capacity of 252 MW and an estimated investment of 816 million Brazilian reais. All these investments have been bringing visibility to the State of Piauí, however, it is necessary to discuss how the installation and development of these projects are being carried out, and whether governmental inspections are taking place, especially regarding the limits of fauna and flora, as well as the quality of life of the local community, as these are the people who live directly with the changes caused by the arrival of these ventures. In the implementation and operation of a solar park, the landscape can be compromised, with considerable loss of vegetation cover, generating considerable impacts on local ecosystems, modifying the fauna and flora development cycles. Another problem that can be observed is related to the physical and social structure of the cities that receive these investments, usually small towns, which face a series of socioeconomic problems. This research addresses the landscape category through a case study of solar energy production in the municipality of Ribeira do Piauí, specifically in the Salinas community. This municipality was chosen because it is home to one of the largest solar parks in South America, Nova Olinda Solar Park. To understand the dynamics of the landscape that involves this whole process, this study works with the following general objective: To analyze the socio-environmental impacts caused by the production of solar energy in the municipality of Ribeira do Piauí, specifically in the Salinas community. Specific objectives are: highlight the activities developed by the Nova Olinda Solar Park, identify the socio-environmental impacts caused by the production of photovoltaic solar energy at the Nova Olinda Solar Park, and evaluate the local community's perception about the production of solar energy at the Nova Olinda Solar Park in that municipality. The geosystemic method was used to contemplate the objectives of this study, its methodological path involves the use of geoprocessing to process data related to the study, as well as questionnaires and interviews applied to a portion of the residents of the Salinas Community and other social groups that have a relationship or affinity with the proposed theme. In addition to this, the results published by the environmental impact report about the Nova Olinda Solar Park, where these data were discussed and compared with the perception of local residents, were also analyzed. It is known that the production of solar energy provides a series of positive impacts, contributing to the expansion of the national energy matrix and the environment, however, this work points to the existence of socio-environmental impacts influenced by the arrival of the enterprise in question, which makes it necessary to debate this topic. Sun, 01 Jan 2023 00:00:00 GMT https://repositorio.uema.br/jspui/handle/123456789/6294 2023-01-01T00:00:00Z https://repositorio.uema.br/jspui/handle/123456789/6293 Título: Avaliação dos impactos ambientais através das respostas bioquímicas em ostras Crassostrea sp. (Bivalvia, Ostreidae) na baía de São José - Maranhão Abstact: The responses of organisms as an environmental monitoring tool have been used by organisms sensitive to changes that occur in the environment. Among the organisms used as biomonitors, oysters stand out, which accumulate large amounts of contaminants in their tissues. In this sense, this research aimed to determine the physical-chemical parameters of seawater at three points in São José Bay, Maranhão - Brazil, perform biometry of oysters of the genus Crassostrea, evaluate the anthropic impact through the quantification of nitrites (NO2) and identify oyster species through molecular analysis. For this, oysters of the genus Crassostrea were collected in the dry season in October 2022 and the rainy season in March 2023 at three points in São José Bay, point S1 (cultivation - Raposa), S2 (extractivism - Paço do Lumiar) and S3 ( urban area- São José de Ribamar). During the time of each collection (low tide), the physical-chemical parameters of the water were recorded at all sampling points and compared with CONAMA Resolution No. 357/2005, 2 ml of seawater was also collected at the three sampling points for NO2 quantification. The nitrite present in the oysters' supernatant was analyzed indirectly through the Griess reaction, which quantifies nitrites. For molecular analysis, DNA extraction techniques using the saline protocol and the Polymerase Chain Reaction were used. Analyzes of the physicalchemical parameters of seawater demonstrated that pH and temperature remained within established limits, except during the rainy season in the extractive area. The concentration of dissolved oxygen remained low at points S2 and S3. In the biometric analysis, it is possible to observe that oysters from extractivism are smaller in all dimensions, especially in the rainy season. The result of nitrite quantification in the oyster supernatant revealed significantly higher concentrations in the extraction area (dry period 0.41 ± 0.7 mg/L and rainy period 0.28 ± 0.11 mg/L), showing that this area is the most impacted. Regarding molecular identification, it was possible to observe a pattern of bands that correspond to Crassostrea gasar and Crassostrea rhizophorae. Therefore, the results found indicate that the quantification of nitrites is an innovative, simple, effective and low-cost tool that can be used in environmental monitoring in addition to the physical-chemical parameters of water and biometric analysis Tue, 05 Mar 2024 00:00:00 GMT https://repositorio.uema.br/jspui/handle/123456789/6293 2024-03-05T00:00:00Z https://repositorio.uema.br/jspui/handle/123456789/6292 Título: A organização popular do espaço público: uma análise a partir da experiência do Comitê da Praça das Arvores no complexo Cohab Cohatrac em São Luís do Maranhão Abstact: The use of public space involves a complexity of perceptions that go beyond the urban dimension and permeate the construction of social and political relationships. From this perspective, a study was developed on the popular organization of public space: an analysis based on the experience of the tree square committee in the Cohab- Cohatrac complex in São Luís do Maranhão, with the aim of analyzing the dynamics of action constituted in the free public space organized based on the experience of the Praça das Árvores Committee in the COHAB-COHATRAC Complex, such as the collective uses and appropriations on the floor of the square, conceived as a place of multiple meanings that redesign this urban space, since the square is a place of contradictions and antagonisms. For this, the bibliographical research methodology was used, combined with field research through participant observation, photographic records, documentary analysis and testimonials from its “users”. The aforementioned study approached the theme based on the experience of the construction process of the Praça das Árvores Committee after the urban planning qualification, which raised questions about the implications of the institutionalization process of the aforementioned committee on political and community autonomy, pointed out in the dynamics of usufruct in the everyday life in this urban socio-community scenario. This study took historical and dialectical materialism from a Marxist perspective as its theoretical-methodological contribution. As a result of the research, it was found that institutional interventions are impacted by community action in urban production, or even how these actions impact the autonomy of the popular committee Sun, 01 Jan 2023 00:00:00 GMT https://repositorio.uema.br/jspui/handle/123456789/6292 2023-01-01T00:00:00Z https://repositorio.uema.br/jspui/handle/123456789/6290 Título: Detecção molecular e análise filogenética de filarídeos em primatas Sapajus apella da região geográfica imediatada de Bacabal, Maranhão Abstact: Filarids are nematodes belonging to the superfamily Filarioidea, recognized for infecting various groups of vertebrates, including Neotropical primates. In Brazil, despite the wide distribution and diversity of species of the genus Sapajus, studies aimed at detecting these parasites in wild populations are still scarce. In Maranhão, particularly in the Immediate Region of Bacabal, an ecological transition area between biomes, with high biodiversity and interaction between wildlife and anthropogenic environments, no studies have yet been carried out on filarids in free-ranging Neotropical primates. In this context, the present study aimed to perform the molecular detection and phylogenetic characterization of filarids detected in Sapajus apella from the region. Between September 2024 and January 2025, individuals of the species S. apella were captured using Tomahawk traps. After restraint, blood samples were collected by puncture of the jugular or femoral vein. Part of the samples was used for the preparation of blood smears, stained by the panoptic method, while another fraction was used for genomic DNA extraction using the QIAamp DNA Mini Kit (QIAGEN®, Germany). The extracted DNA was amplified by Polymerase Chain Reaction (PCR) targeting the cox1, 18S, and 12S genes, followed by Sanger sequencing. The sequences obtained for the cox1 gene were analyzed by BLAST and used for phylogenetic inference by the Maximum Likelihood method. Drops of blood were added to LIT medium for Trypanosoma culture for a parallel project. Of the 14 individuals of S. apella analyzed, three (21.43%) individuals were positive with the presence of parasitic forms in blood smears. Regarding PCR, six (42.85%) samples were positive for the cox1, 18S, and 12S genes. All amplified samples were submitted to sequencing; however, for the cox1 gene, four of them (66.7%) presented adequate quality for analysis and were used in the construction of the phylogenetic tree. The sequences obtained showed identity between 96% and 99% with Dipetalonema gracile according to BLAST, clustering exclusively within the clade of the genus Dipetalonema. The results confirm the occurrence of filarids of the genus Dipetalonema in S. apella in Maranhão. This study represents the first record of the presence of this parasite in primates of this species in the state, expanding knowledge about the distribution of filarids in Neotropical primates in Brazil. Wed, 04 Mar 2026 00:00:00 GMT https://repositorio.uema.br/jspui/handle/123456789/6290 2026-03-04T00:00:00Z