The performance of a new graphite castor oil polyurethane composite electrode is evaluated as an amperometric flow injection detector using hydroquinone (HQ) as a probe. HQ was determined in photographic developers with a minimum detectable net concentration of 100 μmol L-1, and 81 determinations h-1, after optimization of parameters such as the detection potential, sample loop volume, and carr...

In this paper, the authors start from the observation of two apparently contradictory trends: the increasing regionalization of trade and the proliferation of regional trade agreements, on the one hand, and the increase of the average number of trading partners of each country and of the trading distances over time due to decreasing transportation and communication costs, on the other, pointing...

While in principle, international payments could be carried out using any currency or set of currencies, in practice, the US dollar is predominant in international trade and financial flows. The dollar acts as a ‘vehicle currency’ in the sense that agents in non-dollar economies will generally engage in currency trade indirectly using the US dollar rather than using direct bilateral trade among...

This paper investigates the link between foreign aid and exports between the two shores of the Mediterranean. The main hypothesis is that the Euro-Mediterranean Process should promote not only trade but also stronger links between the European Union (EU) and the Middle East and North Africa (MENA). Hence, we expect development aid to have a positive impact on exports, which could also intensify...