Acompanhamento de atividades práticas do melhoramento de trigo no laboratório de pesquisa da biotrigo genética

O estágio curricular obrigatório do Curso de Agronomia, base para o desenvolvimento do trabalho de conclusão de curso, foi realizado na matriz da empresa Biotrigo Genética Ltda., localizada no município de Passo Fundo/RS, no período de 07 de janeiro a 28 de fevereiro de 2019. As atividades desenvolvidas durante este período abrangeram etapas do melhoramento genético de trigo que são realizadas na estação contrária ao desenvolvimento da cultura. Realizou-se a semeadura de genitores e sua condução no bloco de cruzamentos, a semeadura da F1 simples e F1 top, além da semeadura de populações segregantes em avanço de gerações. A realização de atividades correspondentes a cruzamentos artificias, seleção de grãos e preparo de plantio também ocorreu durante o período compreendido pelo estágio. Todas as atividades desenvolvidas e acompanhadas, mesmo que na contra-estação, proporcionaram uma boa compreensão sobre as etapas de um programa de melhoramento genético, em especial da cultura do trigo, realizado pela empresa

A RODA DE HISTÓRIAS DO COLÉGIO DE APLICAÇÃO DA UFSC: UMA POSSIBILIDADE DE FRUIÇÃO ESTÉTICA E LITERÁRIA NO COTIDIANO DA ESCOLA

O artigo ora apresentado nasce do desejo de um grupo de professoras de Educação Geral do Colégio de Aplicação / UFSC, de qualificar o tempo de vivência da infância na escola a partir da realização de Rodas de Histórias, bem como, de reencontrar o sentido da prática educativa para além dos conteúdos curriculares prescritos. Este artigo tem como objetivo narrar o percurso traçado desde a criação da Roda de Histórias em 2012 até a formalização em 2016, desse espaço/tempo, também como um lugar de pesquisa e extensão. Portanto, são apresentados os princípios e fundamentos que guiaram a construção e realização da Roda enquanto atividade de ensino durante seis anos, assim como, o primeiro exercício no campo da pesquisa, tentando compreender como os familiares e os professores significam a vivência da Roda de Histórias do CA-UFSC

Micronucleus test in fish for in situ evaluation of the Sinos River water quality, in Brazil

The Sinos River basin is impacted by industrial and agricultural activities, as well as by low rates of urban wastewater treatment. The purpose of this study was to monitor de Sinos River water quality using the micronucleus test in fish and the analysis of water physicochemical parameters. Bryconamericus iheringii specimens were captured in December 2013 (summer) and July 2014 (winter) at two sites located in the Sinos River: Caraá, in the upper section of the basin, and Parobé, in the middle section. After capture, animals were immediately killed and blood samples were collected for the micronucleus test. No significant differences were observed in micronucleus frequencies between sites and sampling periods. However, in the summer, nuclear abnormalities frequencies observed in Parobé were significantly higher than in Caraá. A higher frequency of nuclear abnormalities was also found in fish captured in Caraá during winter, in comparison with frequencies found in the summer. The results for the water physicochemical analysis showed values of total phosphorous, aluminum, lead, copper and iron above the allowed limits established by the Brazilian legislation. The nuclear abnormalities induction found in the present study may be associated to the presence of cytogenotoxic substances in the water

Normalized difference vegetation index (NDVI) for soybean biomass and nutrient uptake estimation in response to production systems and fertilization strategies

The system fertilization approach emerged to improve nutrient use eciency in croplands. This new fertilization concept aims at taking advantage of nutrient cycling within an agroecosystem to obtain maximum production from each nutrient unit. To monitor this e ect, methodologies such as the Normalized Di erence Vegetation Index (NDVI) are promising to evaluate plant biomass and nutrient content. We evaluated the use of NDVI as a predictor of shoot biomass, P and K uptake, and yield in soybean. Treatments consisted of two production systems [integrated crop-livestock system (ICLS) and cropping system (CS)] and two periods of phosphorus (P) and potassium (K) fertilization (crop fertilization—P and K applied at soybean sowing—and system fertilization—P and K applied in the pasture establishment). NDVI was evaluated weekly from the growth stage V2 up to growth stage R8, using the Greenseeker® canopy sensor. At the growth stages V4, V6, R2, and R4, plants were sampled after NDVI evaluation for chemical analysis. Soybean yield and K uptake were similar between production systems and fertilization strategies (P > 0.05). Soybean shoot biomass and P uptake were, respectively, 25.3% and 29.7% higher in ICLS compared to CS (P < 0.05). For NDVI, an interaction between the production system and days after sowing (P < 0.05) was observed. NDVI increased to 0.95 at 96 days after sowing in CS and to 0.92 at 92 days after sowing in ICLS. A significant relationship between NDVI and shoot biomass, and P and K uptake was observed (P < 0.05). Our results show that the vegetation index NDVI can be used for estimating shoot biomass and P and K uptake in the early growth stages of soybean crops, providing farmers with a new tool for evaluating the spatial variability of soybean growth and nutrition

Lazer na cidade em tempos de pandemia: construindo diálogos com a comunidade

Este trabalho tem como objetivo relatar o desenvolvimento metodológico e as contribuições geradas pelo projeto de extensão “Georreferenciamento dos espaços e equipamentos públicos de lazer de Curitiba/PR: estratégias para retomada da apropriação no pós-pandemia”, desenvolvido pelo Grupo de Estudos e Pesquisa em Lazer, Espaço e Cidade, da Universidade Federal do Paraná. As ações já realizadas no projeto compreenderam: a) pesquisa exploratória; b) levantamento dos dados acerca dos espaços públicos de lazer, esporte e cultura da cidade de Curitiba/PR; e c) Revisão e correção dos dados obtidos. Para isso, tem sido utilizada uma abordagem qualitativa e quantitativa, com emprego das estratégias de pesquisa documental e de campo e mapeamento georreferenciado. O caráter coletivo e interdisciplinar do projeto contribui para a formação dos sujeitos envolvidos e para a compreensão das políticas públicas de lazer que se materializam no espaço citadino. Por fim, os resultados alcançados e produtos gerados visam auxiliar a comunidade curitibana na reapropriação dos espaços de lazer da cidade durante a fase de desaceleração e controle da pandemia da Covid-19

Canagliflozin and renal outcomes in type 2 diabetes and nephropathy

BACKGROUND Type 2 diabetes mellitus is the leading cause of kidney failure worldwide, but few effective long-term treatments are available. In cardiovascular trials of inhibitors of sodium–glucose cotransporter 2 (SGLT2), exploratory results have suggested that such drugs may improve renal outcomes in patients with type 2 diabetes. METHODS In this double-blind, randomized trial, we assigned patients with type 2 diabetes and albuminuric chronic kidney disease to receive canagliflozin, an oral SGLT2 inhibitor, at a dose of 100 mg daily or placebo. All the patients had an estimated glomerular filtration rate (GFR) of 30 to &lt;90 ml per minute per 1.73 m2 of body-surface area and albuminuria (ratio of albumin [mg] to creatinine [g], &gt;300 to 5000) and were treated with renin–angiotensin system blockade. The primary outcome was a composite of end-stage kidney disease (dialysis, transplantation, or a sustained estimated GFR of &lt;15 ml per minute per 1.73 m2), a doubling of the serum creatinine level, or death from renal or cardiovascular causes. Prespecified secondary outcomes were tested hierarchically. RESULTS The trial was stopped early after a planned interim analysis on the recommendation of the data and safety monitoring committee. At that time, 4401 patients had undergone randomization, with a median follow-up of 2.62 years. The relative risk of the primary outcome was 30% lower in the canagliflozin group than in the placebo group, with event rates of 43.2 and 61.2 per 1000 patient-years, respectively (hazard ratio, 0.70; 95% confidence interval [CI], 0.59 to 0.82; P=0.00001). The relative risk of the renal-specific composite of end-stage kidney disease, a doubling of the creatinine level, or death from renal causes was lower by 34% (hazard ratio, 0.66; 95% CI, 0.53 to 0.81; P&lt;0.001), and the relative risk of end-stage kidney disease was lower by 32% (hazard ratio, 0.68; 95% CI, 0.54 to 0.86; P=0.002). The canagliflozin group also had a lower risk of cardiovascular death, myocardial infarction, or stroke (hazard ratio, 0.80; 95% CI, 0.67 to 0.95; P=0.01) and hospitalization for heart failure (hazard ratio, 0.61; 95% CI, 0.47 to 0.80; P&lt;0.001). There were no significant differences in rates of amputation or fracture. CONCLUSIONS In patients with type 2 diabetes and kidney disease, the risk of kidney failure and cardiovascular events was lower in the canagliflozin group than in the placebo group at a median follow-up of 2.62 years