Solution aerosols are injected into an inductlvety coupled argon plasma (ICP) to generate a relatively high number density of positive ions derived from elemental constituents. A small fraction of these ions is extracted through a sampling orifice into a differentially pumped vacuum system housing an ion lens and quadrupole mass spectrometer. The positive ion mass spectrum obtained during nebul...

In the 1970s, taxation of "windfall" profits from primary products and intervention in trade and production tempted governments into expansionary fiscal policies, whilst stifling the private sector and depressing growth. However, the experience of the recent coffee boom has so far been more favourable: those African countries which liberalized and left a large share of the “windfall” with the p...

Should the generosity of unemployment benefits and the progressivity of income taxes depend on the presence of business cycles? This paper proposes a tractable model where there is a role for social insurance against uninsurable shocks to income and unemployment, as well as inefficient business cycles driven by aggregate shocks through matching frictions and nominal rigidities. We derive an aug...

This paper proposes a dynamic politico-economic theory of intergenerational contracts, whose driving force is the intergenerational conflict over government spending. Embedding a repeated probabilistic voting setup in a standard OLG model with human capital accumulation, we find that the empowerment of elderly constituencies is key in order to enforce productive policies. The paper characterize...

An impedimetric aptasensor for ochratoxin A (OTA) detection has been developed on the base of a gold electrode covered with a new modifier consisting of electropolymerized Neutral Red and a mixture of Au nanoparticles suspended in the dendrimeric polymer Botlorn H30®. Thiolated aptamer specific to OTA was covalently attached to Au nanoparticles via Au-S bonding. The interaction of the aptamer w...

Global Aging and Fiscal Policy with International Labor Mobility: A Political Economy Perspective This paper uses an overlapping generations model with international labor mobility and a politically responsive fiscal policy to examine aging in developed and developing regions. Migrant workers change the political structure composed of young and elderly voters in both labor-receiving and labor-s...

In this paper an applied general equilibrium model for the Extremadura region is presented. Our aim is to show the importance of agricultural subsidies in this economy, that it is a distinctive characteristic of this region. To achieve this purpose, we analyse the effects of a supression of these subsidies, using different scenaries related to the labour market and tax compensation. Model param...

Background: Escherichia coli (E. coli) is one of the most important infectious agents in patients undergoing prostate biopsy. It belongs to a large family of gram-negative rods, Enterobacteriaceae. This family includes members of the normal flora of the intestine that are only occasionally pathogenic. Recent considerations of rectal colonization with fluoroquinolone-resistant E. coli shows the ...

budget plays an important role in public sector management and administration .one of its components is revenues forecasting and without the necessary accuracy in predicting revenues, government deficit will occur and people are incapable of facing with losses of reducing of important and essential services like education and health care. in this study, the rational expectations hypothesis is a...