نبذة مختصرة : In the last three years, our research follows two main issues, defined by the slogans: "green meets toxic" and "green meets green". The first issue considers the potential use of ambient friendly solvents for toxic organic com- pounds of industrial and practical importance. The other is related to liquid phase behavior in solutions of ecologically sustainable substances. The "green" solvents studied are: ionic liquids, liquid poly(ethylene glycol), glycerol and 1,2- and 1,3-propanediol. In the past ten years, Portugal has rapidly advanced in scientific research and development, showing a consistent state strategy in this respect. Statistics and facts obviously speak in favor to this claim: 1 i) in 2008, Portugal invested over 2,513,000,000 Euro for this purpose, i.e., 1.51 % of the gross national product (GNP), which is the highest level ever, surpassing those of Ireland and Spain; ii) within the aforementioned funds, nearly a half came from the private sector and this increase is enormous - almost three times more compared to 2005; iii) the number of researchers per thousand active members of the population reached 7.2, being now over the average in the European Union; iv) Portugal probably has one of the best stimulation politics for private investments in research - companies could have tax reductions of up to 82.5 % of their scientific input; v) in the period 2004-2008, Portugal had one of the best increase rates of scientific production - the number of publication per million inhabitants in journals acknowledged by the Information Sciences Institute (ISI) list, increased from 373 to 626 (nearly 70 %).
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