Procedures in International Law
A Procedural Perspective in Law.- Procedures in International Law.- The Quest and the Notion.- National Legal Procedures.- Limiting National Jurisdiction by Procedural Means.- Substantive International Law Before National Fora.- International Legal Adjudication.- Alternative Methods of Dispute Resolution.- Conflicts Between Adjudicators Applying International Law.
Contested enslavement: the Portuguese in Angola and the problem of debt, c. 1600–1800
The Portuguese were keen slave traders on the west central coast of Africa in the early modern period, but governors in Angola appear to have been increasingly unhappy about certain aspects of enslavement in relation to debt, and in particular that of children. Slavery for debt was uncommon in early modern Europe, where three arguments, drawn from Roman law, were usually cited by way of justification: birth; war; and self-sale. Cavazzi, an Italian Capuchin missionary travelling around Angola between 1654 and 1665, suggested several similarities between the legal justifications for slavery in Africa and Europe, but also pointed up a major difference: while in Angola in the early modern period enslavement could result from a number of instances of default, in Portugal at the same time - and in Europe more widely – debtors tended to find themselves imprisoned if they defaulted on a payment, rather than enslaved. This paper will consider the nature of debt enslavement in Angola in the early modern period, and how it impacted on the transatlantic slave trade.
Production of xylanase by Aspergillus awamori on complex medium in stirred tank and airlift tower loop reactors
Abstract Aspergillus awamori was cultivated on complex medium containing wheat bran as sole carbon source in the precultures as well as in the main cultures in stirred tank and airlift tower loop reactors. The decomposition of the wheat bran particles by α -amylase and xylanase produced by the fungus was investigated by monitoring the enzyme activities, the CO 2 production rate, the concentrations of reducing sugars, glucose, xylose, phosphate and ammonium as well as by applying transmission electron microscopy. By applying synthetic medium in the preculture, the time lag was longer, the growth faster, the xylanase activity higher in the main culture, than by using wheat bran in the preculture. With increasing the stirrer speed the intimate contact between the pellets and the wheat bran was reduced, which caused a decrease of the growth and the xylanase production. By applying ground wheat bran, filamentous mycelium was formed, the growth and the substrate uptake rates increased, but the xylanase production decreased due to the less intimate contact between the fungus and the wheat bran. In the airlift tower loop reactor filamentous mycelium was formed due to the low specific power input. In spite of the high medium viscosity, high xylanase productivity was obtained. With ground wheat bran the particles were completely covered by filamentous mycelium, medium viscosity strongly increased and as consequence the growth and xylanase production decreased.