03.1 - Graduação (UAST)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2926
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Item Avaliação da taxa de filtração da daphnia magna cultivada em sistema autotrófico (água clara) e sistema mixotrófico (biofloco) com diferentes dietas ofertadas(2022-06-03) Rodrigues, Mônica de Lima; Abreu, Jéssika Lima de; http://lattes.cnpq.br/6237276943114119; http://lattes.cnpq.br/2300244354976388In aquaculture, the larviculture phase of fish farming is one of the main challenges faced, due to the small size of the cultured individuals and the inherent difficulties in feeding and management. The filtration rate is calculated assuming that the nutrient rate of zooplankton is proportional to the concentration of available food. It is relevant to know the filtration rate in order to know how best to produce organisms, verifying if the type of culture will interfere in the filtration rate, and to observe if there is selectivity regarding the diet offered. The culture was performed in autotrophic system, when inorganic carbon and light are used as energy sources; and mixotrophic, in the presence of organic and inorganic carbon, light, and organic compounds as energy sources. Thus, the present research aimed to know the filtration rate of Daphnia magna (cladoceran) in autotrophic and mixotrophic culture being tested different microalgae diets. The experiment was carried out with six treatments with three repetitions each, based on two factors: culture (autotrophic or mixotrophic) and diet (Chlorella vulgaris, Haematococcus pluvialis (green phase/vegetative phase) and red phase/cystic phase). The water quality variables: temperature (°C), dissolved oxygen (mg.L-1 ) and pH were measured twice a day throughout the culture. The variables analyzed for filtration rate were: filtration rate (TF), cell decay with the presence of Daphnia (K Daph ), cell decay without the presence of Daphnia (K sDaph), ratio with Daphnia (C/C0 Daph), ratio without Daphnia (C/C0 sDaph). The growth variables were: specific growth rate (SGR), doubling time (DT), maximum mean density (DMX), yield (R), and day of maximum density (DMD). As for Dissolved Oxygen, there was a significant difference only for the algae factor. However, the other variables pH and temperature showed no statistical difference, with the pH staying around 7.3 and the temperature around 29° C. As for TF, no statistical differences were found in the treatments. However, certain treatments had higher values for H. pluvialis in the cystic phase in both types of cultures and lower values for H. pluvialis in the vegetative phase. The day of maximum density (MDD) was reached on day 7 in the autotrophic culture with the diet of H. pluvialis in the green phase being fed. Thus, H. pluvialis in the green phase was found to be a well utilized food for Daphnia magnaItem Eficiência dos gastos públicos em saúde durante a pandemia da covid-19: um estudo das unidades federativas do Brasil(2022-05-25) Lima, Weslley Lopes de; Pontes, Tricia Thaíse e Silva; http://lattes.cnpq.br/0497598665441136; http://lattes.cnpq.br/2870184276904066The objective of this study is to measure the relative technical efficiency of public spending on health in the federative units of Brazil, in the years 2020 and 2021, which correspond to the first and second year of the covid-19 pandemic in the country, given the importance of optimization financial resources to meet the different socioeconomic realities of the population. For that, a descriptive, documentary and quantitative research was carried out, with the application of Data Envelopment Analysis (DEA), CCR model, oriented towards output, to identify the efficient units in each period. Per capita expenditure on health was used as an input and as an output the number of tests, beds, people recovered, inverse of deaths, inverse of hospitalizations, doctors and vaccines per thousand inhabitants. The results showed that none of the units in the Northeast and Center-West obtained efficiency scores equal to 1 in the analyzed periods. In 2020, Acre, Rio Grande do Sul and São Paulo were efficient, while in 2021, Acre, Minas Gerais, São Paulo, Rio de Janeiro and Tocantins were efficient in the application of resources. It can be seen that, among the efficient units, only two (Acre and São Paulo) were efficient in both years, 2020 and 2021, and the Federal District was the most inefficient unit in both years Through the analysis, it was possible to infer that a higher per capita expenditure on health does not necessarily result in efficiency, as well as a lower expenditure does not guarantee efficient services.Item ESG (environmental, social and governance) e a estrutura de capital das empresas listadas na B3.(2022-05-25) Silva, Maria Rickaely de Andrade; Pontes, Tricia Thaíse e Silva; http://lattes.cnpq.br/0497598665441136http://lattes.cnpq.br/0497598665441136; http://lattes.cnpq.br/5734061211803496This work aims to investigate the relationships between ESG (Environmental, Social and Governance) indicators and capital structure indicators. The sample consists of all non-financial companies listed on B3 (Brasil, Bolsa, Balcão) with information available from 2016 to 2021. Five econometric models were estimated through regressions with panel data, with variables classified as: ESG , capital structure and control. The results showed that social practices and ESG practices, measured by the general ESG indicator, positively impact the capital structure. Indicating that social and ESG practices provide access to cheaper sources of finance through third-party capital. The control variables brought as much results for the Trade-off theory as for the Pecking Order. In the opposite direction, statistically significant results were found between the capital structure variable and the general ESG indicator. It is possible to infer that companies with a higher proportion of third-party capital in the capital structure tend to present better ESG practices. In addition, it was found that the years of the covid-19 pandemic led to greater indebtedness of Brazilian companies. Thus, it differs from previous works by analyzing the relationship between ESG and capital structure and by bringing results consistent with the Trade-off theory, for a country still in development. As well as the inclusion of the analysis of the influence of the pandemic years on the capital structure of Brazilian companies