Abstract The Carnian Pluvial Event (CPE) was an interval marked by global climatic and environmental change, along with biotic turnover, which occurred during the early Late Triassic. Although causes consequences of this event remain unclear, one possible scenario is enhanced volcanism injecting greenhouse gases into atmosphere, perturbing carbon cycle, negatively impacting environment. However...

The Segura mining field, the easternmost segment of Góis–Panasqueira–Segura tin–tungsten metallogenic belt (north–central Portugal), includes Sn-W quartz veins and Li-Sn aplite-pegmatites, which are believed to be genetically related Variscan Granites. Sediment geochemistry indicates granite-related Ti-enrichments, locally disturbed by mineralization, suggesting magmatic metamorphic/metasomatic...

An estuarine methanotroph was isolated from sediment enrichments and designated Methylobacter sp. strain BB5.1. In cells grown on medium with added copper, oxidation of methane and trichloroethylene occurred with similar Ks values, but the Vmax for trichloroethylene oxidation was only 0.1% of the methane oxidation Vmax. Cells grown on low-copper medium did not oxidize trichloroethylene and show...

The match-bound technique is a recent and elegant method to prove the termination of rewrite systems using automata techniques. To increase the applicability of the method we incorporate it into the dependency pair framework. The key to this is the introduction of two new enrichments which take the special properties of dependency pair problems into account.

Bacterial respiratory quinones in environmental samples are proposed as sensitive indicators of the aerobic versus anaerobic metabolism of bacterial populations. A liquid chromatographic method for the analysis of respiratory quinones is presented, and the proportions of ubiquinone, menaquinone and desmethylmenaquinone in aerobic and anaerobic enrichments and several environmental samples are r...

When 3,972 ground beef enrichments with 6 confirmed to contain a non-O157 Shiga toxin-producing intimin-positive Escherichia coli isolate were tested for Shiga toxin, intimin, and O group (O26, O45, O103, O111, O121, and O145) genes, 183 potential positives and only 2 of the 6 confirmed positives were identified.

The Okavango Delta in northern Botswana is an endorheic ecosystem formed by 150,000 islands surrounded a flood plain. vegetation of these displays external tree ring enclosing barren interior domain with evaporitic deposits. We sampled the groundwater into piezometers across island at southwest Delta, and drilled sediments. geochemical analysis water exhibits two different compositions: fresh f...