Peter Möller - Böcker

Natural saline water, waste water, and irrigation return flow endanger the groundwater aquifers in the Rift. In the long run this will ruin the socio-economic backbone of the settlements in the area. Sustainability of the water resources will only be achieved when the process of water replenishment and its underground flow is understood and water extraction is regionally controlled. Rare earth element and spider patterns are presented as new tools for studying the hydrology. Progress in 3-D modelling of groundwater flow proved successfully the impact of pumping on the surroundings of wells and overexploitation of aquifers.

Dieses Lehrbuch führt in das interne Rechnungswesen ein und beschreibt danach im Einzelnen drei Arten von Rechnungen: (1) absatzbezogene Rechnungen (Arten-, Stellen- und Trägerrechnung), (2) divisionsbezogene Rechnungen zur Steuerung von Unternehmensteilen und (3) entscheidungsorientierte Rechnungen.

Rare Earth Elements (REE) as well as tantalum and niobium are of tremendous importance because of their specific high-technology applications. The contributions gathered in this volume give an up-to-date survey on the mineralogy, primary ore deposits, prospecting, processing and applications of REE, Ta, and Nd, making this volume a useful handbook for practitioners and students. Finally, the comprehensive coverage of the fundamental aspects, especially as regards REE as tracers of geological phenomena, will prove extremely helpful.

Natural saline water, waste water, and irrigation return flow endanger the groundwater aquifers in the Rift. Sustainability of the water resources will only be achieved when the process of water replenishment and its underground flow is understood and water extraction is regionally controlled.