Equity in Higher Education – Portuguese Perspective

Access, participation and exclusion from higher education for marginalized and disadvan-taged sections of the population are an intricate socio-political as well as economic practice that has manifold explanations and outcomes. During the last three decades, the higher education has experienced expansion in both enrolments and institutions. The approaches and means of delivery have changed besides the diversification in provision. The role of the state and mar¬ket has also reformed. This characteristic has also altered the nature of equity in higher edu¬cation across the globe. The chapters of this book on different countries of Asia, Europe and Latin America examine access and describe the several spaces where cohorts of relevant age group are included, excluded, or are at threat of exclusion in higher education. The chapters also narrate the state of affairs in which despite numerous alike structure in the experience and outcomes of social exclusion across disenfranchised groups and regions, how some critical differences have led to different paths of struggles and policy formation to attain the objective of equity in higher education.

Poly(vinyl alcohol) with sulfonic acid groups as catalyst for the alpha-pinene alkoxylation

The alkoxylation of a-pinene was carried out over poly(vinyl alcohol) containing sulfonic acid groups, as catalyst. The main product of a-pinene alkoxylation was a-terpinyl methyl ether being also formed bornyl methyl ether, fenchyl methyl ether, limonene and terpinolene as by-products. The absorption band at 1037 cm-1 in the FTIR spectrum of PVA_SSA40 (PVA membrane containing 40% of –OH groups esterified with SSA) which does not appear in the spectrum of PVA, indicates the presence of the sulfonic acid groups. The catalytic activity of PVA with sulfonic acid groups increases when the amount of sulfosuccinic acid used in the polymer crosslinking is increased from 5% to 40%. However, when the crosslinking degree increases from 20% to 40%, the conversion of a-pinene increases only slightly. Good values of selectivity to a-terpinyl methyl ether were obtained over poly(vinyl alcohol) with sulfonic acid groups. A simple kinetic model, which fits experimental concentration data quite well, was developed.