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Money supply and the credit market in early modern economies : the case of eigh...

In this paper, we address the partial equilibrium functioning of the shortterm credit market in the Eighteenth-century Lisbon and its response to three major events: massive gold inflows from Brazil, a catastrophic destruction of capital caused by the 1755 earthquake and the enactment of a 5% legal ceiling on interest rates 1757. We build a time series for the market interest rate, and a regression shows money ...

Sobre a importância de construir uma teoria do Direito Internacional em face do...

The present essay is based on a lecture delivered on the 25 August 2011 at the KIMEP (Kazakhstan Institute of Management, Economics and Strategic Research). Its principal aim is to explore the relationship between international law and nationalism, whilst arguing that both concepts cannot be viewed as two separate and self-contained realities, but should rather be considered in light of their mutual interaction...

Modelling and simulation of biodiesel production processes

Monotoring of the degradation of concrete structures in environments containing...

This study aims to develop a methodology for evaluating the degradation of concrete structures subjected to aggressive environments containing chloride ions based on the use of monitoring systems with sensors permanently installed within the structures. Assays were performed on specimens subjected to controlled media in the laboratory. Measurements of linear polarization resistance (LPR), ionic resistivity of t...

Simulation of two-dimensional combustion propagation on Fe2O3/Al thermite non-h...

In previous works, a two-dimensional model was constructed and tested in a successful attempt to simulate the nonsteady radial combustion propagation on thin disk shaped samples of Fe2O3/Aluminum thermite mixtures. The main characteristics of the model can be summarized as: pseudo-homogeneous medium considering the contribution of air to simulate a porous medium; zero order, non-temperature dependent beyond a g...

Gaseificação térmica de resíduos agroindustriais

sobre o potencial energético de resíduos agroindustriais da região de Portalegre. Os ensaios foram realizados utilizando uma unidade piloto de gaseificação térmica de biomassa, de leito fluidizado borbulhante, às temperaturas de 750◦ C, 800◦ C e 850◦ C, com caudais mássicos de 30 kg/h, 40 kg/h e 60 kg/h. Os resultados do estudo demonstram a influência negativa que o aumento da temperatura provoca no poder calor...

Estudo da degradação de estruturas de betão armado expostas ao ataque por sulfatos

As estruturas de betão armado quando sujeitas a ambientes agressivos tendem a perder capacidade de proteção das armaduras nelas inseridas. É conhecido que, a proteção das armaduras está associada ao PH do betão que as envolve, e cujo valor tende a diminuir na presença de sulfatos que contribuem para a descalcificação do betão. Quando o PH desce para níveis inferiores a 9, ficam criadas as condições para a disso...

Editorial Note

As the Portuguese Economic Journal is now publishing its decennial volume, it gives us great satisfaction to observe that, relative to realistic expectations, the journal is continuing on its successful path. The Impact Factor of the journal, as measured by the Journal Citation Reports of Thomson Reuters, has increased steadily since the journal was first included in JCR 2007. Another mark of success is that th...

Modeling and simulation of radial combustion propagation of Fe2O3/Al thermite s...

In previous works, a one-dimensional model was built to simulate the non-steady radial combustion propagation on thin disk shaped samples of Fe2O3/Aluminum thermite mixtures and was successfully tested. Now, the purpose is to extend the referred model to the more sensible two-dimensional features of the samples, maintaining the main characteristics of the previous model: zero order kinetics, conductive/radiativ...

Adaptive collocation methods for the numerical solution of differential models

A PDE integration algorithm that associates a Method of Lines (MOL) strategy based on finite differences or high resolution space discretizations, with a collocation strategy based on increasing level one or two-dimensional dyadic grids is presented. It reveals potential either as a grid generation procedure for predefined steep localised functions, and as an integration scheme for moving steep gradient PDE pro...