Atividade microbiana em solos, influenciada por resíduos de algodão e torta de mamona

Microbial activity constitutes a good indicator of soil quality, and is influenced by the addition of carbon in the system serving as a substrate for microorganisms that increase their activity and release of CO2, comprising the edaphic respiration of the soil. The objective of this study was to evaluate the microbial activity in different soil types with the addition of cake press of castor bean and cotton textile residue. The study was conducted in a greenhouse at the headquarters of Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Cotton in randomized block design in 4 x 3 factorial arrangement with four replications. At predetermined intervals of 4 days, the containers were opened and the solution of NaOH titrated with HCl 2N in the presence of acid/base indicator phenolphthalein. After reading, the same amount of NaOH was added and the containers were closed again. The difference between the amounts of acid needed to neutralize the sodium hydroxide in a control container and the treatments was equivalent to the amount of carbon dioxide produced by soil microorganisms. It was found that the residues influenced the microbial activity in different soil types, especially in the initial determinations, presenting themselves as good sources for mineralization and nutrient supply, the castor bean proportionating higher cumulative release of CO2 by microorganisms.

Avaliação da distribuição da densidade em MDF a partir da técnica da onda de ultra-som

The goal of this research was to determine the density distribution in medium density fiberboard (MDF), manufactured with polyurethane derived from castor oil using, ultrasonic wave technique. The equipment used in this test is Steinkamp BP7 with plan and exponential transducers, both with 45 kHz frequencies, located in several zones on the plate in order to determine wave ultrasonic velocity. The Pinus caribaea and Eucalyptus grandis fiberboard were manufactured in the quality control and products development laboratory of Duratex with 500 mm long, 500 mm large, 8 and 15 mm of thickness. Three MDF for each fiber specimen and thickness were fabricated, totalizing twelve plates tested. The MDF were produced with 5% polyurethane addition, in temperature of 160°C, tension press of 53 bars and addition of moisture content of 12%. For determination of fiberboard density, samples were extracted from the same zones where the wave ultrasonic velocity was determined. In this case, DAX-Ray equipment was used. Statistical analysis shows good agreement with wave ultrasonic velocity and the density profile, validating the application of non-destructive technique in order to determine the density profile of MDF's.

Selecting green suppliers based on GSCM practices: Using fuzzy TOPSIS applied to a Brazilian electronics company

Due to an increased awareness and significant environmental pressures from various stakeholders, companies have begun to realize the significance of incorporating green practices into their daily activities. This paper proposes a framework using Fuzzy TOPSIS to select green suppliers for a Brazilian electronics company; our framework is built on the criteria of green supply chain management (GSCM) practices. An empirical analysis is made, and the data are collected from a set of 12 available suppliers. We use a fuzzy TOPSIS approach to rank the suppliers, and the results of the proposed framework are compared with the ranks obtained by both the geometric mean and the graded mean methods of fuzzy TOPSIS methodology. Then a Spearman rank correlation coefficient is used to find the statistical difference between the ranks obtained by the three methods. Finally, a sensitivity analysis has been performed to examine the influence of the preferences given by the decision makers for the chosen GSCM practices on the selection of green suppliers. Results indicate that the four dominant criteria are Commitment of senior management to GSCM; Product designs that reduce, reuse, recycle, or reclaim materials, components, or energy; Compliance with legal environmental requirements and auditing programs; and Product designs that avoid or reduce toxic or hazardous material use. © 2013 Elsevier B.V. All rights reserved.

As inversões sujeito-verbo e a concordância verbal: um estudo sobre a influência da posposição do sujeito em gêneros escritos de imprensa do português brasileiro

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A oligarquia paulista e sua articulação com o governo de Floriano Peixoto durante a Revolta da Armada (1893 - 1894)

Pós-graduação em História - FCLAS

O Brasil e a Guerra do Pacífico: alianças estratégicas e relações diplomáticas (1879-1883)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Intelectualidade e imprensa negra paulista: os casos do Getulino e Progresso (1923-1931)

Pós-graduação em História - FCLAS

As crônicas portuguesas de D. João da Câmara na Gazeta de Notícias (1901-1905)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Dispositivo para avaliar a força muscular dos membros superiores

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A consagração do mito Mário Palmério no cenário político do Triângulo Mineiro (1940-1950)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

História oral de idosos asilados em São Carlos-SP: velhice, asilo e memória da cidade (1950-2008)

Pós-graduação em História - FCHS

Literatura e jornalismo em Eça de Queiróz/ Ecos de Paris/ Gazeta de Notícias – 1892-1894

Pós-graduação em Letras - FCLAS

O poder da imprensa na construção da imagem do escritor no Brasil contemporâneo: jornalistas e críticos na transformação de um ex-líder ipesiano em autor símbolo das liberdades democráticas

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O Panorama (1837-1868): história de um Jornal

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

A imprensa alternativa da contracultura no Brasil (1968-1974): alcances e desafios

Este artigo refere-se a utilização da imprensa alternativa da contracultura como importante fonte para a construção histórica, seus alcances e desafios.