Avaliação físico-química e comportamento higroscópico de goiaba em pó obtida por spray-dryer

Electrochemical Behaviour of Iron in Chlorinated Alkaline Media. The Effect of Slurries from Granite Processing

O Porriño é uma zona bem conhecida de pedreiras do sudoeste de Galiza, Espanha. Nas operações de processamento do granito são geradas 3 × 105 ton ano-1 de pó nesta área, com consequências graves para o meio ambiente. Este pó resultante comprovou ser um aditivo eficiente do concreto de alta resistência com melhoramento efetivo das suas propriedades mecânicas. Nenhum trabalho foi publicado acerca...

Análise e modelagem do comportamento de SPAMMERS e dos usuários legítimos em redes de email

Email is an increasingly important and ubiquitous mean of communication, both facilitating contact between individuals and enabling rises in the productivity of organizations. However, the relentless rising of automatic unauthorized emails, also known as spam, is eroding away much of the attractiveness of email communication. Most of the attention dedicated to spam detection has focused on the ...

Avaliação da qualidade de agrupamentos em grafos

The process of discovering groups of similar, connected vertices in a graph, known as graph clustering, has interesting applications in several scenarios, such as biology, marketing and recommendation systems. A major challenge concerning this problem is the evaluation of cluster quality, which is used to measure the e ectiveness of clustering algorithms. Many quality metrics for graph cluster ...

Comportamento de compras por impulso no turismo Online

De Química

SYNTHESIS OF BIODIESEL: A CONTEXTUALIZED EXPERIMENT PROPOSAL FOR THE GENERAL CHEMISTRY LABORATORY. The contextualized understanding of concepts in Chemistry by students from other areas is a challenging task. In this experiment, the synthesis of biodiesel is done by base catalyzed transesterification of refined soy oil with methanol at room temperature and common glassware found in any chemistr...