Bayerite is one of the phases of aluminum hydroxide which is precipitated by the carbonation of aluminate solutions obtained from sintered nepheline syenite leaching. In this study, the conditions for the bayerite formation were predicted by thermodynamic modeling of the carbonation process and the Bromley- Zemaitis model was used for this purpose. Carbonation experiments were carried out a...

Research on common pool resources has advanced considerably in recent years (Bromley, 1992). Many research studies have focused on specific situations at specific times and have generated a wealth of case-study material (collections of such case studies include Mc Cay and Acheson, 1987; Berkes, 1989; Bromley, 1992; Agrawal, 2001, has recently reviewed some of this material). Some research has a...

In Sub-Saharan Africa, mobility through transhumance is a much-valued strategy of pastoralists for dealing with rainfall variability (see Swallow 1994; van den Brink, Bromley, and Chavas 1995; Ellis and Swift 1988). Transhumance is generally practiced in the arid to semi-arid regions of Sub-Saharan Africa, an environment characterized by low mean rainfall and high rainfall variability. Higher r...