Removal of hard COD from acidic eucalyptus kraft pulp bleach plant effluent streams using oxidoreductases.

The bleach plant of a pulp and paper (P&P) mill presents a major source of wastewater containing toxic organic matter characterized as chemical oxygen demand (COD). Due to their high oxidizing power, oxidoreductases hold promise to be a key solution for the removal of dissolved organic material. Here, four oxidoreductases from different enzyme families were selected to treat bleach plant effluents. Haloperoxidase treatment of the final effluent resulted in the highest levels of decolorization (71%) and reduction of aromatic compounds (36%). Using single compound analysis, 27 low molecular weight compounds were found to be persistent throughout the wastewater treatment process and, therefore, classified as hard COD. The tested enzymes efficiently removed several of the identified COD compounds. Hence, this study suggests that the application of oxidoreductases will serve as an environmental-friendly solution for reducing waste from P&P production.

Percepción De Los Padres De Niños Con Déficit Ejecutivos Que Presentan Dificultades En El Aprendizaje De Matemáticas / Parental Perception In Children With Executive Deficits Who Have Learning Difficulties In Mathemathics

RESUMEN El objetivo principal de esta investigación es describir los déficits ejecutivos de los niños/as que presentan dificultades de aprendizaje en el área de matemáticas y su relación con las percepciones paternas. Se estudió una muestra de 30 niños con dificultades en el área de matemáticas en edades comprendidas entre los 9 y 12 años, a los cuales se les aplicó la Torre de Londres, y a los padres, el Inventario Infantil de Funciones Ejecutivas (CHEXI). De acuerdo a las pruebas aplicadas, los resultados mostraron déficit en memoria de trabajo, planificación, regulación e inhibición. Los resultados muestran que no existe correlación entre los déficits ejecutivos evidenciados en los niños y la percepción de los padres. Sin embargo, existe relación positiva entre la percepción de los padres en el área de memoria de trabajo y el bajo rendimiento académico. Los resultados se discuten por la complejidad del constructo evaluado y las múltiples variables que intervienen al momento de su valoración clínica.

ABSTRACT The main objective of this research is to describe the executive deficits of children with learning difficulties in mathematics and their relationship with parental perceptions. A sample of 30 children with difficulties in mathematics at ages between 9 and 12 years was studied, they underwent Tower of London test, and to the parents the Children's Inventory of Executive Functions (CHEXI) was studied. According to the applied tests, the results showed difficulties in working memory, planning, regulation and inhibition. The results showed no correlation between the executive deficits evidenced in children and the perception of parents. However, there is a positive relationship between the perception of parents in the area of working memory and poor academic performance. The results are discussed by the complexity of the evaluated construct and the multiple variables involved at the time of its clinical assessment.

Characteristics of the dimensions and sub-dimensions of young basketball players´ personalities

The aim of the present work is to assess the personality traits of young basketball players aged 16-18 years (n=186)through the description of the dimensions and sub-dimension from the Big Five Questionnaire (BFQ) regarding personality.This was a non-experimental study in which a descriptive transversal design was used. The results that were obtained indicate theplayers in the selected sample are characterized as people who are: a) moderately dynamic, extraverted and dominant; b)moderately altruistic, understanding and tolerant; c) moderately responsible, orderly, and diligent; d) moderately balanced, calm,patient, and able to manage their emotions moderately well; and e) rather uncreative, unimaginative, and not well informed(AU)

Ivor Lewis esophagectomy in a patient with enlarged azygos vein: a lesson to learn.

We report the case of a 62-year-old patient with congenital interruption of the inferior vena cava and azygos continuation who required transthoracic esophagectomy to remove a tumor in the middle esophagus. The consequences of dividing an enlarged azygos vein in this kind of patient are reported and discussed.

Fatores que influenciam o desmame precoce nas crianças menores de 6 meses na área de saúde da UBS cidade Continental - município de Serra /ES

O aleitamento materno é uma das estratégias mais efetivas de vínculo, nutrição e proteção no binômio mãe-filho que podemos incentivar, além da eficácia econômica e da facilidade de acesso ao alimento. A importância do aleitamento materno tem sido abordada, principalmente sob o ponto de vista nutricional, imunológico e psicossocial; portanto, é um assunto de interesse multiprofissional. Durante os atendimentos de pediatria realizados na unidade pôde-se observar que muitas crianças na faixa etária de 0-6 meses haviam deixado precocemente o aleitamento materno exclusivo, vários eram os motivos que levaram as mães a tal atitude, alguns relacionados à falta de informação quanto a importância do leite materno. Neste estudo tenta-se proporcionar, pelos profissionais de saúde, informações para as mães referentes ao aconselhamento em amamentação com base em teoria e prática. Um de nossos objetivos foi fazer um ótimo trabalho preventivo nas principais causas do desmame precoce e experiências e vivências clínicas na assistência à mãe-filho-família, alem de treinar em "aconselhamento em amamentação" nas salas de espera da unidade a todas as mães e todos os integrantes das famílias com crianças menores de 6 meses para desempenhar papel relevante no aumento das taxas e duração do aleitamento materno, empregando uma importante estratégia didática de comunicação entre profissionais de saúde e a mãe para a proteção, promoção e apoio ao aleitamento materno.