Phylogenetic relationships within Chamaecrista sect. Xerocalyx (Leguminosae, Caesalpinioideae) inferred from the cpDNA trnE-trnT intergenic spacer and nrDNA ITS sequences

Chamaecrista belongs to subtribe Cassiinae (Caesalpinioideae), and it comprises over 330 species, divided into six sections. The section Xerocalyx has been subjected to a profound taxonomic shuffling over the years. Therefore, we conducted a phylogenetic analysis using a cpDNA trnE-trnT intergenic spacer and nrDNA ITS/5.8S sequences from Cassiinae taxa, in an attempt to elucidate the relationships within this section from Chamaecrista. The tree topology was congruent between the two data sets studied in which the monophyly of the genus Chamaecrista was strongly supported. Our analyses reinforce that new sectional boundaries must be defined in the Chamaecrista genus, especially the inclusion of sections Caliciopsis and Xerocalyx in sect. Chamaecrista, considered here paraphyletic. The section Xerocalyx was strongly supported as monophyletic; however, the current data did not show C. ramosa (microphyllous) and C. desvauxii (macrophyllous) and their respective varieties in distinct clades, suggesting that speciation events are still ongoing in these specimens

Evaluación del polen de Stryphnodendron polyphyllum (Mart.) como potencial antioxidante y antibacteriano

El polen de Stryphnodendron polyphyllum, conocido como barbatimão, es un problema para los apicultores con apiarios cerca de la planta, por la toxicidad para las abejas. El objetivo fue evaluar la actividad antioxidante, antibacteriana y determinar fenoles totales y taninos en el extracto etanólico. La actividad antioxidante se evaluó por método DPPH. La actividad antibacteriana por método de microdilución. Los taninos totales y fenoles se determinaron por método espectrofotométrico. Se identificó actividad inhibitoria y bactericida para E. coli, P. aeruginosa, S. mutans, S. sobrinus, S. sanguinis, S. salivarius y L. paracasei. Se determinó EC50 de 7.42- mg/mL en la actividad antioxidante. Para compuestos fenólicos y tánicos, por comparación con curva de calibración, 3,12±0,005g/ 100g de muestra como ácido gálico y 7,3±0,03g/100g como ácido tánico. Se realizó cromatografía líquida de alta resolución para obtener el perfil cromatográfico.Pollen from Stryphnodendron polyphyllum, known as barbatimão, is a problem for beekeepers who have apiaries close to the plant, due to toxicity for bees. The objective was to evaluate the antioxidant, antibacterial activity and determine total phenols and tannins in ethanolic extract. Antioxidant activity was evaluated by DPPH method. Antibacterial activity was performed by microdilution method. Total tannins and phenols were determined by spectrophotometric method. We had results inhibitory and bactericidal activity for E. coli, P. aeruginosa, S. mutans, S. sobrinus, S. sanguinis, S. salivarius and L. paracasei. EC50 of 7.42mg/mL was determined in the antioxidant activity. For phenolic and tannic compounds, the results, by comparison of calibration curve, were 3.12±0.005g/100g expressed as gallic acid and 7.3±0.03g/100g expressed as tannic acid. High performance liquid chromatography was performed to obtain the chromatographic profile

SOIL CHEMICAL PROPERTIES AND GROWTH OF SUNFLOWER (HELIANTHUS ANNUUS L.) AS AFFECTED BY THE APPLICATION OF ORGANIC FERTILIZERS AND INOCULATION WITH ARBUSCULAR MYCORRHIZAL FUNGI

The use of organic fertilizers and the inoculation of mycorrhizal fungi in the cultivation of oil crops is essential to reduce production costs and minimize negative impacts on natural resources. A field experiment was conducted in an Argissolo Amarelo (Ultisol) with the aim of evaluating the effects of fertilizer application and inoculation of arbuscular mycorrhizal fungi on the growth attributes of sunflower (Helianthus annuus L.) and on soil chemical properties. The experiment was conducted at the Federal University of Rio Grande do Norte, Brazil, using a randomized block design with three replicates in a 4 × 2 factorial arrangement consisting of four treatments in regard to application of organic fertilizer (liquid biofertilizer, cow urine, mineral fertilizer, and unfertilized control) and two treatments in regard to arbuscular mycorrhizal fungi (with and without mycorrhizal fungi). The results showed that the physiological attributes of relative growth rate and leaf weight ratio were positively influenced by fertilization, compared to the control treatment, likely brought about by the supply of nutrients from the fertilizers applied. The growth and productivity attributes were positively affected by mycorrhization

Zoneamento geo-ambiental da região de Canindé - Ceará

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Evolução da saúde do trabalhador na perícia médica previdenciária no Brasil Evolution of worker's health in the social security medical examination in Brazil

Com o objetivo de analisar a prática da Perícia Médica Previdenciária a partir da introdução dos paradigmas da Saúde do Trabalhador, coletaram-se informações sobre a concessão de benefícios por incapacidade, avaliando o adoecimento pela geração da Comunicação de Acidente de Trabalho no Polo Cimenteiro do Rio de Janeiro. Entre 2007 e 2009 foi encontrada apenas uma notificação envolvendo o manuseio de resíduos tóxicos utilizados como substitutos de matriz energética embora a análise mostrasse fontes e mecanismos de adoecimento não considerados pela Perícia Médica, ainda centrada na lógica unicausal da Medicina do Trabalho. Para alcançar os paradigmas da Saúde do Trabalhador são necessárias mudanças na atuação da Perícia Médica, com o restabelecimento de parcerias, formação de recursos humanos, adoção de indicadores epidemiológicos, estabelecendo e avaliando metas que avancem para além da simples concessão de benefícios por incapacidade.<br>In order to analyze the practice of the social security medical examination starting from the introduction of the worker's health paradigms, data was gathered on the granting of social security disability benefits to assess worker illness based on notification of work-related accidents in the cement industries of Rio de Janeiro. From 2007 to 2009 there was only one notification, which involved a worker handling toxic waste instead of the energy matrix. However, the analysis revealed sources and mechanisms of illness overlooked in the social security medical examination, which is still focused on the one-cause-only logic of occupational medicine. To achieve the worker's health paradigms, changes are required to alter the way of conducting the social security medical examination, by re-establishing partnerships, training human resources, adopting epidemiological indicators, as well as setting and assessing social security goals that transcend the mere granting of disability benefits