Graphene has attracted enormous attention owing to its extraordinary properties, while graphene-based nanocomposites hold promise for many applications. In this paper, we present a two-step exploitation method for preparation of graphene oxides and a facile solvothermal route for preparation of few-layer graphene nanosheets and graphene/WO₃ nanocomposites in an ethanol-distilled water medium. T...

Motivation der behandelten Fragestellung und Kontext Die Lehrund Standardliteratur im Requirements Engineering (RE) wie beispielsweise [1] [2] hat in den vergangen Jahren diverse Praktiken und Methoden beschrieben, die im Rahmen eines Anforderungsprozesses angewendet werden sollten. Explizite Rahmenwerke wie [3] [4] versuchen darüber hinaus, Anforderungsingenieuren „belastbare Best Practices“ a...

The prevalent utilization of organophosphorus pesticides presents a profound risk to the global environment, necessitating immediate development secure and reliable methodology mitigate this hazard. Photocatalytic technology, through generation robust oxidizing free radicals by suitable catalysts, offers viable solution effectively pesticides, thus preserving environmental well-being. In study,...

The enzyme hydrogenase isolated from the sulphate reducing anaerobic bacterium Desulfovibrio gigas was encapsulated in reverse micelles of AOT–water–isooctane. The enzyme ability to consume molecular hydrogen was studied as a function of the micelle size (given by Wo = [H2O]/[organic solvent]). A peak of catalytic activity was obtained for Wo = 18, a micelle size theoretically fitting the heter...

One important mechanism suggested to underlie the acquisition of grammar is rule learning. Indeed, infants aged 0 ; 7 are able to learn rules based on simple identity relations (adjacent repetitions, ABB: "wo fe fe" and non-adjacent repetitions, ABA: "wo fe wo", respectively; Marcus et al., 1999). One unexplored issue is whether young infants are able to process both adjacent and non-adjacent r...

We present a quantitative classification scheme for carbon and oxygen sequence Wolf—Rayet stars. Our scheme uses new high-quality optical AAT and INT observations of 20 stars for which we provide narrow-band photometry and estimates of interstellar reddenings. In increasing order of excitation, our spectral classes range from WC11 to WC4 for Wolf— Rayet stars with a dominant carbon line visual ...

We have developed a fully flexible docking method that uses a reduced lattice representation of protein molecules, adapted for modeling peptide ligand — protein complexes. The CABS model (Carbon Alpha, Carbon Beta, Side Group) employed here was initially designed for single-chain protein folding, and performed well in many applications [Kolinski & Bujnicki, 2005]. Instead of full-atomic protein...