Geogene Grundwasserbeschaffenheit als Bemessungsgrundlage fuer den Grundwasserschutz

From the results of hydrochemical laboratory analyses and evaluations, the natural groundwater quality can be defined and the origin of major constituents can be attributed at atmogenic, pedogenic and lithogenic components. Investigations in study areas in the Quaternary plain of Northern Germany (catchment area of the Jeetzel River in northeastern Lower Saxony), at Harsewinkel in Westfalia and in the Triassic of Franconia indicate that the natural groundwater quality can be characterized by concentrations of a few major constituents, which are closely related to the lithologic conditions. The natural groundwater quality provides a reference level for the assessment of anthropogenic impacts. Specific requirements of groundwater protection for conservation of the natural groundwater quality depend on the hydrochemical composition of the groundwater. Groundwaters with very low salinity are particularly sensitive to solute inputs. Waters in carbonate rocks are generally well buffered against acid atmospheric inputs, they may, however, be influenced by inputs of nitrate or sulphate from the soil zone. (orig.)Available from TIB Hannover: RN 8908(94-127) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Umwelt, Naturschutz und Reaktorsicherheit, Bonn (Germany)DEGerman

Optimierung der Kombination einer Fischer-Tropsch-Synthese mit einer Kohlehydrierung zum Zwecke der Produktion von Motorkraftstoffen Abschlussbericht. Abschlussdatum: Dezember 1978

SIGLEDEGerman

Complete genome sequence and comparative analysis of the metabolically versatile Pseudomonas putida KT2440

Pseudomonas putida is a metabolically versatile saprophytic soil bacterium that has been certified as a biosafety host for the cloning of foreign genes. The bacterium also has considerable potential for biotechnological applications. Sequence analysis of the 6.18 Mb genome of strain KT2440 reveals diverse transport and metabolic systems. Although there is a high level of genome conservation with the pathogenic Pseudomonad Pseudomonas aeruginosa (85% of the predicted coding regions are shared), key virulence factors including exotoxin A and type III secretion systems are absent. Analysis of the genome gives insight into the non-pathogenic nature of P. putida and points to potential new applications in agriculture, biocatalysis, bioremediation and bioplastic production