Principais Coleções do Repositório
Submissões Recentes
Artigo
Diversity and conservation of birds associated with an urban landscape in the southwest Brazilian Amazon
(2023-01-27) Moura, Aloysio Souza de; Candido, Edilson; Machado, Felipe Santana; Leite, Leandro Henrique; Mariano, Ravi Fernandes; Fontes, Marco Aurélio Leite
The Amazon presents an arc of deforestation which has expanded into natural areas and bird community studies in these areas are incipient for urban landscapes after transformation. Therefore, the bird community in an urban landscape in the southwest Amazonian region within an area in the arc of deforestation was investigated. The observations were performed through linear transects, during the wet and dry seasons of 2013. Records were obtained using binoculars and cameras. A total of 191 species of birds were recorded. The species accumulation curve was not reaching the asymptote, showing that new species can be recorded with a sampling effort increase. The community has low richness as a result of pressure on Amazonian environments and a high degree of anthropization. However, there is relevant composition, because nectarivores, insectivorous, carnivores, omnivores, and granivores were found in all environments, as well as endemic and threatened species.
Artigo
Distribuição do ameaçado papagaio-do-peito-roxo, Amazona vinacea (Kuhl, 1820), e de outros psittacídeos na região ecotonal cerrado/floresta atlântica do sul de Minas Gerais
(2022) Moura, Aloysio Souza de; Souza, Daniel Batista de; Machado, Felipe Santana; Mengez, Urica Carolina Lemos; Mariano, Ravi Fernandes; Fontes, Marco Aurélio Leite
Brazil has 87 species of birds of the Psittacidae family. Even though the ecotonal region of the Cerrado and Atlantic Forest in the south of the states of Minas Gerais is ornithologically well studied, there are still no surveys focusing on the distribution of parrots in the region.This work aimed to report the areas of occurrence of the Amazona vinacea and other birds of the Psittacidae family in the region in question, which were obtained through field observations between the years 2004 to 2019.Records of 12 species of birds of this family are presented.
Artigo
Protein supplementation during mid-gestation alters the amino acid patterns, hepatic metabolism, and maternal skeletal muscle turnover of pregnant zebu beef cows
(2022-12-16) Meneses, Javier Andrés Moreno; Nascimento, Karolina Batista; Galvão, Matheus Castilho; Ramírez-Zamudio, German Darío; Gionbelli, Tathyane Ramalho Santos; Ladeira, Marcio Machado; Duarte, Marcio de Souza; Casagrande, Daniel Rume; Gionbelli, Mateus Pies
Pregnant beef cows raised on extensive pasture systems in tropical regions commonly experience nutrient restriction during gestation. Herein, it was postulated that a strategic maternal protein supplementation (PS) might reduce maternal tissue mobilization intensity. Therefore, this study aimed to assess how protein supplementation (~40% of crude protein at the level of 3.5 g/kg BW/day, achieving 12% CP) for cows fed low-quality forage (corn silage + sugarcane bagasse, achieving 5.5% of crude protein) affects the maternal blood profile and the mRNA abundance of skeletal muscle turnover markers and glycogenic enzymes in the liver. This study also aimed to assess if these responses were related to the fetal sex. The PS resulted in a greater nutritional status, which in turn was demonstrated by the greater insulin, IGF1, and glucose concentrations. The effects of PS in mid-gestation persisted into late pregnancy. Protein supplementation also enhanced hepatic gluconeogenesis from AA and altered skeletal muscle turnover. In conclusion, protein supplementation during mid-gestation promotes a greater hepatic glucose production from AA, preserving the maternal tissue reserves and benefiting the longevity of the cows of the herd.
Artigo
Medição e Análise no CMMI com Metodologia Seis Sigma e ISO/IEC/IEEE 15939
(2023-01-06) Silva, Charles Shalimar Felippe da; Oliveira, Marcelo Silva de
Based on the premise that the quality of a software product is mostly the result of the quality of the process in which it is developed, models for the improvement of the process of software have been developed. The measurement and analysis for models assume great importance, because the evaluation of the relationship between the capacity (estimated results) and the performance (observed results) of a process is important so that it can be improved. CMMI is one of the more used models, having a great experience with success in the industry. CMMI do not indicate the measurement system to work and do not indicate its implementation. Six Sigma methodology conjugated to recommendations of ISO/IEC/IEEE 15939 aid CMMI in construction and implementation of that measurement system, as demonstrated by a case study that presented as results the indication of actions for the improvement of the software process.
Artigo
The coffee NDVI modeling using built-in RGB passive sensor in UAS
(2022-11-25) Campos, Gleydson Antônio de Oliveira; Alves, Marcelo de Carvalho; Miranda, Jonathan da Rocha; Resende, Mário Lúcio Vilela; Carvalho, Gladyston Rodrigues
Studies carried out used different sensors and field applications can be accomplished to obtain information and make decisions related to coffee management. The objective of this work was to train machine learning algorithms to estimate the NDVI based on the GreenseekerTM active optical sensor in 20 arabica coffee cultivars in the experimental area of the National Institute of Coffee Science and Technology (INCT of Coffee) using a passive RGB sensor. in unmanned aerial system (UAS) and its relationship with foliage. With the spectral signatures recorded in the RGB images of the 20 coffee cultivars, the relationships with the foliage and the NDVI data obtained with the Greenseeker™ active optical sensor were analyzed. Through machine learning and digital image processing techniques, it was possible to obtain an NDVI equation using the RGB bands based on the NDVI of the Greenseeker TM active optical sensor. The results were satisfactory when compared to in situ data, providing the use of a simple and effective method of evaluating the vegetative vigor of different coffee cultivars.