As a critical review it is somewhat less satisfactory, for many topics are mentioned but casually or receive but scant attention, a defect clearly unavoidable in the preparation of a text meant primarily to be practical. Nevertheless, it represents a treatment of the subject that will prove most useful. Much could be done to make the index more helpful, and the lack of an index of the many auth...

The concentrations of seven trace metals (Fe, Mn, Cu, Cr, Co, Pb and Zn) in three sediment cores were analysed to assess the depositional trends of metals and their contamination level in the Mandovi estuary, west coast of India. All sediment cores showed enrichment of trace metals in the upper part of core sediments and decrease in concentration with depth, suggesting excess of anthropogenic l...

Modern positioning and locating technologies, e.g., GPS, have generated huge amounts of geo-referenced point data that are crucial to understand environmental and social-economic phenomena. Unfortunately, traditional disk-resident databases are inefficient in handling large-scale point data. In this study, we propose to utilize the massive data parallel processing power of General Purpose compu...

Recent decades have witnessed a danger to food security as well human health because of pollutants’ negative impact on crop quality. An accurate estimate the heavy metal concentrations in Egypt’s north Nile Delta is required lower high concentration levels soil means develop remediation strategy that stabilizes metals contaminated soil. Using geo-accumulation index (I-geo), contamination factor...

In order to meet the significantly increased metal demand of the world market, it has been decided to expand the capacity of the existing alumina refineries and to set up new plants (more than 2 Mt/a each). The selection among the bauxite sources is based on previous exploration data, such as: tonnage, grade, mineralogy, etc., the geographical position of the deposit, existing natural and const...