The story of the Twelve Pearls, continued in Ravennetus, finds Barthol, a hundred generations later and seemingly deathless, still attempting to discover the secret of the Pearls. Nelsyn, a young man cut off from his family by war, is the unwitting recipient of one of the Pearls flung into the future. Will he accept the responsibility and use this knowledge for the good of humankind?

Ravennetus

Dean, J. David

Teen & Young Adult

Pandea Pubns

The Fire of Han-Thol begins the saga of The Twelve Pearls. Semi-divine and raised by lions, young Dayn discovers his true identity and purpose for being. To fulfill that purpose, he must unite with Allisyn, Princess of Aestri, to whom Deus, the Father-God, has revealed the Twelve. Only together can they use the Wisdom of the Pearls to overcome the evil Barthol and bring about the World Dream of Deus. But their plans go awry and the Pearls are cast into the future to keep them from the clutches of Barthol.

The Fire of Han-Thol

Dean, David

Literature & Fiction

This project was initiated in response to the establishment of mercury TMDLs around the country and issues raised by this process, specifically concerning the issue of mercury bioavailability. While many TMDLs recognize that point sources constitute a small fraction of the mercury load to a water body, a question has been raised concerning the relative bioavailability of mercury coming from various sources. For instance, is the mercury discharged from a wastewater treatment plant more or less bioavailable than mercury in precipitation, mercury in urban stormwater, or mercury in sediments? This project seeks to address this question by developing a reliable definition and approach to estimating bioavailability, by profiling various sources of mercury in a watershed with regard to the species of mercury present and by profiling those factors or conditions in either the effluent or the receiving water that enhance or mitigate the bioavailability of those forms. The report consists of two volumes. Volume I is a background document for evaluating the biovailability of mercury in wastewater effluents and receiving waters and establishes relevant project objectives. Volume II is a guidance document for wastewater treatment professionals interested in assessing the bioavailability of mercury in their wastewater, comparing it to other sources, and assessing changes in bioavailability in their effluent when it is mixed in a receiving water body. The project concludes that, based on available data and bioavailability as defined in this report, wastewater effluent is one of the lowest among the sources evaluated with respect to mercury bioavailability due to its typically low levels of methylmercury. Due to their typically low levels of suspended solids, wastewater treatment plants employing post-secondary treatment should not contribute appreciably to local sediment mercury burdens.

Estimation of Mercury Bioaccumulation Potential from Wastewater Treatment Plants in Receiving Waters: Phase 2

Science & Math

Mason,Robert

Earth Sciences

Iwa Pub

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Books by Dean, J. David