economics. The concepts they study can be useful in economic models of policies – to reduce virgin materials extraction, to …

Does extraction increase the likelihood of antistate violence in the early phases of statebuilding processes? While … much research has focused on the impacts of war on statebuilding, the potential "war-making effects" of extraction have … colonial Eastern Africa. Analyses based on a newly collected historical data set confirm the correlation between extraction and …

microalgae are used for biodiesel production. To simplify the process, the extraction of the oils and their reaction are made to … as an extraction solvent and reaction medium. The use of SC-CO2 allows easy separation of the products and leaves the …. Within 6 h, the maximum biodiesel production yield was found to be 19.3% at a temperature of 35 °C and at an M:O molar ratio …

; part one depends on studying the optimum condition of extraction with different co-solvent on different textile fabrics, as … the extraction can be an energy, economic and environmental friendly by waste recycling. Part two deals on studying the …

. As a matter of fact, they became the catalyst of new problems: As appeared subsequently, the end of land transformations … does not mean at all the termination of problems, but only their beginning. It is well known the fact that improvement of … the last one, is impossible without an objective estimation of the state and existing problems. The aim of this paper is …

. The goal of this paper is to review the problems with different renewable energies and to outlay different scenarios for … the timing of major impact from global warming and oil peak. The problems with renewable energies have mostly economic …

problems that face the successful implementation of the trainee program under the frameworks of various theories of … organizational management. To solve these problems, this article presents a detailed diagnosis of the management shortcomings to … to minimize the problems and maximize the success of the Management Trainee Program in the case study organization. …