Energy demand is increasing dramatically because of the fast industrial development, rising population, and economic growth in the world. To fulfill this energy demand, a large amount of fuel is widely used from different fossil resources. Burning of fossil fuels has caused serious detrimental...

Nowadays, comprehensive perception of the tar characteristics generated from municipal solid waste (MSW) and coal to guide pyrolysis or gasification gas yield upgrading and cleaning has attracted massive research attention. In this study, MSW and coal samples were chosen as principal components....

Energy demand is increasing dramatically because of the fast industrial development, rising population, and economic growth in the world. To fulfill this energy demand, a large amount of fuel is widely used from different fossil resources. Burning of fossil fuels has caused serious detrimental...

Woody biomass was liquefied by water in an autoclave in the reaction temperature range of 280–420°C with sodium carbonate as the catalyst. The experimental results show that the yield of the main liquefaction product (heavy oil) was significantly influenced by the process conditions. The...

The current study describes the emphatic use of response surface methodology for the optimized biodiesel production using chemical and enzymatic transesterification of rice bran and sunflower oils. Optimal biodiesel yields were determined to be 65.3 ± 2.0%, 73.4 ± 3.5%, 96.5 ± 1.6%, 89.3 ±...

Nowadays, comprehensive perception of the tar characteristics generated from municipal solid waste (MSW) and coal to guide pyrolysis or gasification gas yield upgrading and cleaning has attracted massive research attention. In this study, MSW and coal samples were chosen as principal components....

As transformações ocorridas após a privatização do setor ferroviário, aliada a criação da agência reguladora (Agência Nacional de Transportes Terrestre - ANTT), fizeram com que a estrutura de governança desse setor fosse alterada. A nova forma de coordenação em que as ferrovias...

The main purpose of this research is to evaluate the influence of two distinct programs over the coffee consumption in Brazil. Thefirst one is the implementation of “Plano Real” and it’s consequences in terms of monetary stabilization and income growing. Thesecond refers to a program that...