Pantheon Repositório Institucional da UFRJ

X-ray microtomography (microCT) can be applied for 3D visualization of the internal structure and quantitative analysis of a pore network in a nondestructive manner. With the growth of computer simulation combined with the use of digital images, the use of digital rock analysis has...

Following the Fukushima accident, there is clear progress in studies and researches involving safety in nuclear power plants to prevent accidents with total or partial degradation of the reactor core, known as a severe accident. In order to ensure the physical integrity of the ...

In this thesis, it is proposed and developed a method of isotopic depletion calculation using Generalized Perturbation Theory (GPT), for subcritical systems driven by an external neutron source. Throughout fuel burnup cycle, occur process that cause changes in the nuclide densities and ...

The emergence of the design thinking theme in the last two decades, leveraged by the speed of digital media, has been arousing curiosity in the productive field. Today, the discussion of this approach advances as a means of systematically introducing creativity into productive envi...

Decommissioning problems within the oil and gas industry often demand rather involved decision making processes, which may give rise to a large number of criteria since it considers the usually conflicting interests of multiple stakeholders. Moreover, each criterion must be evaluated in ...