Collective work with media on educational robotics

Nowadays one observes a large scientific and technological development in several areas. This movement leads many searchers seek to bring their schools up to its time. One of these initiatives has been to work in a robotics educational perspective in which the students were challenged to solve problems. In this study one analyzed a collective work with a robotic Public Elementary School where teachers and students developed an integrated practice with Blog and Robotics. In process data production, field notes and filming were done in different school learning environments. Data analysis showed that in this educational practice students became authors of their activities, projects and blogs.Atualmente, observa-se um grande desenvolvimento científico e tecnológico em diversas áreas. Esse movimento faz com que muitos pesquisadores “procurem colocar as escolas à altura do seu tempo”. Uma das iniciativas tem sido a de trabalhar com a robótica, numa perspectiva educativa em que os alunos são desafiados a resolver problemas. Neste estudo, analisa-se um trabalho coletivo com robótica em uma escola pública de Ensino Fundamental onde se produziram saberes docentes sobre uma prática integrada com blog e Robótica. No processo de produção de dados, foram registradas notas de campo e filmagens nos diferentes ambientes de aprendizagem da escola. No processo de análise dos dados, observou-se que, nessa prática educativa, os alunos se tornaram autores das suas atividades, de seus projetos e de seus blogs

Intake and digestibility of concentrate and legume hay diets fed to foals

This study was carried out to evaluate intake, nutrient digestibility and body weight gain of foals on diets of concentrate and legume hay. Treatments were: lucerne hay (Medicago sativa), Campo Grande stylo hay (20% Stylosanthes macrocephala and 80% Stylosanthes capitata) and Mineirão stylo hay (Stylosanthes guianensis cv. Mineirão). Fifteen weaned foals at 160 Kg body weight (BW) were used. The experiment was entirely randomized with three treatments and five replicates. Dry matter intake was estimated at 30 g of dry matter (DM)/kg BW and was comprised of 40% concentrate meal and 60% hay. Fecal production and nutrient digestibility were calculated by the LIPE® marker methodology. There was no difference between Lucerne hay and Campo Grande stylo hay intake, but intake of Mineirão stylo hay was lower than that of Lucerne hay. Body weight gain and nutrient digestibility coefficients were similar for foals fed different diets. Intake was similar for Campo Grande and Lucerne hay, and led to similar body weight gain in diets with concentrate. Mineirão stylo hay, at 137 days of growth, was not palatable for the foals

Influência da estocagem na composição química de fenos de estilosantes para alimentação equina

During dry seasons, equines are traditionally fed hay. However, if not prepared under favorable climatic conditions and if not properly stored, hay does not preserve its nutritional value. The aim of this research was to evaluate the chemical composition in Stylosanthes guianensis cv. Mineirão and Estilosantes Campo Grande hay varieties, used to feed equines over 225 days of storage. Treatments consisted of Stylosanthes guianensis cv. Mineirão and Estilosantes Campo Grande hay varieties, assessed at six moments of storage: 0, 45, 90, 135, 180, and 225 days. The experiment followed a completely randomized split-plot design. In the comparison between varieties, differences (P0.05) over the 225 days of storage. The storage period had little impact on the nutritional quality of the assessed hays. The Stylosanthes guianensis cv. Mineirão and, mainly, Estilosantes Campo Grande hay varieties have potential to be used in equine diet.Durante a época seca, equinos são tradicionalmente alimentados com feno, entretanto, se não forem preparados em condições climáticas favoráveis e bem estocados, não preservam seu valor nutricional. O objetivo desse trabalho foi avaliar a influência do período de estocagem na composição bromatológica e concentração de betacaroteno dos fenos de Stylosanthes guianenses cv. Mineirão e Estilosantes Campo Grande durante 225 dias de armazenamento. Os tratamentos consistiram dos fenos de Stylosanthes guianenses cv. Mineirão e Estilosantes Campo Grande, avaliados em seis tempos de armazenamento: 0, 45, 90, 135, 180 e 225 dias. O delineamento experimental foi inteiramente ao acaso com arranjo em parcelas subdivididas. No comparativo entre as duas variedades, houve diferença (p0,05) ao longo dos 225 dias de armazenamento. O período de armazenamento não afetou a qualidade nutricional dos fenos avaliados. As variedades dos fenos de Stylosanthes guianenses cv. Mineirão e, principalmente, Estilosantes Campo Grande têm potencial para serem usadas na dieta de equinos

Identification of Mycobacterium tuberculosis complex based on amplification and sequencing of the oxyR pseudogene from stored Ziehl-Neelsen-stained sputum smears in Brazil

A cross-sectional analysis of stored Ziehl-Neelsen (ZN)-stained sputum smear slides (SSS) obtained from two public tuberculosis referral laboratories located in Juiz de Fora, Minas Gerais, was carried out to distinguish Mycobacterium bovis from other members of the Mycobacterium tuberculosis complex (MTC). A two-step approach was used to distinguish M. bovis from other members of MTC: (i) oxyR pseudogene amplification to detect MTC and, subsequently, (ii) allele-specific sequencing based on the polymorphism at position 285 of this gene. The oxyR pseudogene was successfully amplified in 100 of 177 (56.5%) SSS available from 99 individuals. No molecular profile of M. bovis was found. Multivariate analysis indicated that acid-fast bacilli (AFB) results and the source laboratory were associated (p < 0.05) with oxyR pseudogene amplification. SSS that were AFB++ SSS showed more oxyR pseudogene amplification than those with AFB0, possibly due to the amount of DNA. One of the two source laboratories presented a greater chance of oxyR pseudogene amplification, suggesting that differences in sputum conservation between laboratories could have influenced the preservation of DNA. This study provides evidence that stored ZN-SSS can be used for the molecular detection of MTC

Retinol and mineral status in grazing foals during the dry season

ABSTRACT The objective of this study was to examine serum retinol and some mineral (zinc, iron, calcium, phosphorus, magnesium, and copper) levels in seven Mangalarga Marchador colts aged 329.48 days, reared on pasture in the city of Montes Claros, MG, Brazil, during the dry season. Equines were evaluated for four periods of 45 days during the total study period of five months. The foals had access to Panicum maximum cv. Tanzania pasture, while water and mineral salt lick were provided ad libitum. Blood samples were taken to determine serum retinol and levels of minerals, along with pasture samples to quantify beta-carotene in the grass. The results indicated that retinol levels varied (2.87 to 1.97 µg/dL) and remained below the standard levels. The levels of zinc, iron, calcium, and phosphorus did not vary significantly with average values of 36.79 µg/dL, 77.32 µg/dL, 10.33 mg/dL, and 9.99 mg/dL, respectively. However, zinc and calcium remained below standard concentrations of 60-120 µg/dL and 10.8-13.5 mg/dL, respectively, since the beginning of the study. On the other hand, copper and magnesium levels decreased over time (97.76 to 77.56 mg/dL and 2.86 to 2.21 µg/dL, respectively), but showed normal levels for horses during the research. Beta-carotene in grass showed a downward trend over time from 38.53 to 0.09 mg/kg of dry matter. The results also indicated a significant relationship between serum retinol and serum copper levels. Vitamin A supplementation is necessary whenever foals are fed pastures during the dry season

Trabalho coletivo com mídia na robótica educacional

Nowadays one observes a large scientific and technological development in several areas. This movement leads many searchers seek to bring their schools up to its time. One of these initiatives has been to work in a robotics educational perspective in which the students were challenged to solve problems. In this study one analyzed a collective work with a robotic Public Elementary School where teachers and students developed an integrated practice with Blog and Robotics. In process data production, field notes and filming were done in different school learning environments. Data analysis showed that in this educational practice students became authors of their activities, projects and blogs.Atualmente, observa-se um grande desenvolvimento científico e tecnológico em diversas áreas. Esse movimento faz com que muitos pesquisadores “procurem colocar as escolas à altura do seu tempo”. Uma das iniciativas tem sido a de trabalhar com a robótica, numa perspectiva educativa em que os alunos são desafiados a resolver problemas. Neste estudo, analisa-se um trabalho coletivo com robótica em uma escola pública de Ensino Fundamental onde se produziram saberes docentes sobre uma prática integrada com blog e Robótica. No processo de produção de dados, foram registradas notas de campo e filmagens nos diferentes ambientes de aprendizagem da escola. No processo de análise dos dados, observou-se que, nessa prática educativa, os alunos se tornaram autores das suas atividades, de seus projetos e de seus blogs