The versatility of gold for electrode manufacture suggests that it could be an ideal material for some microbial fuel cell applications. However, previous studies have suggested that microorganisms that readily transfer electrons to graphite do not transfer electrons to gold. Investigations with Geobacter sulfurreducens demonstrated that it could grow on gold anodes producing current nearly as ...

Comparative sequencing of Pseudomonas aeruginosa genes oriC, citS, ampC, oprI, fliC, and pilA in 19 environmental and clinical isolates revealed the sequence diversity to be about 1 order of magnitude lower than in comparable housekeeping genes of Salmonella. In contrast to the low nucleotide substitution rate, the frequency of recombination among different P. aeruginosa genotypes was high, lea...

We study the number N(n,An, X) of number fields of degree n whose Galois closure has Galois group An and whose discriminant is bounded by X. By a conjecture of Malle, we expect that N(n,An, X) ∼ Cn ·X 1 2 ·(logX)bn for constants bn and Cn. For 6 ≤ n ≤ 84393, the best known upper bound is N(n,An, X) � X n+2 4 ; this bound follows from Schmidt’s Theorem, which implies there are � X n+2 4 number f...

Acinetobacter baumannii continues to be a major health problem especially in hospital settings. Herein, features that may play a role in persistence and disease potential were investigated in a collection of clinical A. baumannii strains from Australia. Twitching motility was found to be a common trait in A. baumannii international clone I strains and in abundant biofilm formers, whereas swarmi...