54 documents found, page 1 of 6

The university extension as an agent for social transformation: a case study of...

Community libraries are social environments created by the community to promote access to information and leisure for the local population. These environments become important support points, reducing social inequalities and guaranteeing pedagogical and cultural development. In this context, in 2005, the Community Library of Saramenha de Cima was created, in the neighborhood of the same name in the city of Ouro...

Divulgar para quê? Índice de disclosure e a importância atribuída por doadores ...

- Purpose of the research: To analyze whether the index of disclosure via the website practiced by non-profit entities is in line with the importance attributed by donors and managers to the voluntary disclosure of information. - Theoretical framework: Theory of Disclosure. - Methodology: A dissemination index (WDI) and questionnaires to donors and entities from the Clique Esperança project, in Campo Grande / M...

Tributação dos serviços de hospitalidade 4.0 em plataformas P2P: o caso da Airb...

Divulgar para quê?: índice de disclosure e a importância atribuída por doadores...

Electrochemical aspects in the flotation of leadzinc sulfides in Brazilian sili...

Sodium sulfide plays a multifunctional role in sulfide minerals flotation. The restorative action of minerals surface is its main function. As pH regulator, it reacts on surface and provides the conditions for interactions between minerals-collectors. However, changes in pulp composition can affect the electrochemical conditions desirable for flotation. Thus, the purpose this study was the evaluation of electro...

Avaliação de variáveis operacionais da jigagem de minério de ferro por meio de ...

A jigagem é uma das técnicas mais antigas para se concentrar minérios no mundo, apropriado para empreendimentos de pequeno a médio porte, além compor, comumente, etapas de pré-concentração em grandes usinas, como uma maneira de se reduzir custos de produção. Dentro desta importante perspectiva da jigagem, foi proposta e realizada uma campanha de testes laboratoriais visando a concentração mineral por jigagem, a...

Analysis of quartz floatability using design of experiments.

Quartz floatability in cationic reverse flotation depends on the suitable choice of surfactant type and the conditions under which they are applied. The design of experiments (DOE) allows the evaluation of process variables, in a structured and independent way, with statistical validation and a limited number of tests. Tests of microflotation of quartz, in the size range -150 +75 µm, using factorial design of e...

Escolas adaptam currículo para atender à nova demanda. [Entrevista]

Evaluation of grinding circuits for iron ore.

Grinding has become one of the most important unitary operations for producing pellet feed for direct reduction from low-grade ores and small liberation size, such as compact itabirites. The aim of this study was to evaluate and compare two grinding circuits in an industrial iron ore plant, by evaluating the current operation through sampling, industrial data analysis and mass balancing. The flows analyzed were...

ONGs melhoram gestão de projetos com ajuda de alunos da USP. [Depoimento]