Cultures of the newly isolated bacterial strains AD20, AD25, and AD27, identified as strains of Ancylobacter aquaticus, were capable of growth on 1,2-dichloroethane (DCE) as the sole carbon and energy source. These strains, as well as two other new DCE utilizers, were facultative methylotrophs and were also able to grow on 2-chloroethanol, chloroacetate, and 2-chloropropionate. In all strains t...

The haloalkane dehalogenases are detoxifying enzymes that convert a broad range of halogenated substrates to the corresponding alcohols. Complete crystal structures of haloalkane dehalogenase from Sphingomonas paucimobilis UT26 (LinB), and complexes of LinB with 1,2-propanediol/1-bromopropane-2-ol and 2-bromo-2-propene-1-ol, products of debromination of 1,2-dibromopropane and 2,3-dibromopropene...

The suitability of sentinel species to monitor environmental pollution is often hampered by an insufficient knowledge on pollutant trophodynamics. We simultaneously evaluated the influence of individuals' trophic position (as revealed by δ(15)N values) and dietary exploitation of particular systems (using δ(13)C and δ(34)S as proxies) on inorganic pollutant concentrations measured on fledglings...

Magnetotactic bacteria(MTB) display magnetotaxis ability because of biomineralization intracellular nanometer-sized, membrane-bound organelles termed magnetosomes. Despite having been discovered more than half a century, only few representatives MTB have isolated and cultured in the laboratory. In this study, we report genomic characterization novel marine magnetotactic spirillum strain SH-1 be...

Haloalkane dehalogenase (DhaA) catalyzes the hydrolysis of halogenated compounds through cleavage carbon halogen bonds. However, low activity, poor environmental stability, and difficult recycling free DhaA greatly increases economic cost practical application. Inspired by organic–inorganic hybrid system, an iron-based nanocomposite biocatalyst FeHN@DhaA is successfully constructed to enhance i...

In general, we should like to express our lack of sympathy for the expressed purpose of this Symposium, which is the planning of epidemiological studies for the evaluation of effects of major pollutants on humans. Carcinogenesis and leukemogenesis are two particularly worrisome long term effects which deserve consideration with respect to any pollutant. From our experience with ionizing radiati...

The aim of the paper is to compare results obtained by experiments and numerical analysis for vehicle exhaust pollutant emissions and concentrations in urban area. Special attention was plaid to problems of vehicle pollutant emission and dispersion caused by cold start. For description of emission sources a multi-point model was applying. In the model every vehicle is treated as a single moveab...

This paper presents (1) general considerations related to the development of two mathematical models for non-conservative transport of nitrate and ammonium under unsteady water flow conditions; (2) their application to predict the transport of pollutant in both customary and accidental pollutant release circumstances; and (2) a discussion related to models use in water quality management. The s...

Conventional approaches to stormwater quality evaluation combine continuous flow rate monitoring and automated sample collection for chemical analysis to derive an event mean concentration for each pollutant of concern. This approach requires expensive flow monitoring and automated sample collection equipment and the costly analysis of high numbers of water samples. Consequently, such monitorin...