We present an algorithm to decide whether or not a finitely generated subgroup of the isometry group locally finite simplicial tree is both discrete and free. The correctness this relies on following conjecture: every ‘minimal’ n-tuple isometries either contains elliptic element satisfies hypotheses Ping Pong Lemma. prove conjecture for n=2,3, show that it implies generalisation Ihara's Theorem.

The natural maintenance cycles of many mosquito-borne pathogens require establishment of persistent non-lethal infections in the invertebrate host. The mechanism by which this occurs is not well understood, but we have previously shown that an antiviral response directed by small interfering RNAs (siRNAs) is important in modulating the pathogenesis of alphavirus infections in the mosquito. Howe...

The overall reaction catalysed by purified rat liver palmitoyl-CoA synthetase (EC 6.2.1.3) apparently proceeds via an enzyme-bound intermediate that may be either enzyme-fatty acyl-AMP (Berg, 1956), palmitate-enzyme-AMP, palmitate-enzyme-PP, or enzyme-palmitate. This conclusion is consistent with the following observations (Bar-Tana et al., 1973): (a) the initial velocity pattern of the overall...

One of the most interesting 3G networks feature is their integration with the 2G networks. It provides seamless End to-End services. Current widely deployed 2G and 3G networks provide enabling interoperability. These mechanisms include Inter RAT idle mode reselection. Inter RAT dedicated mode reselection is used for PS (Packet Switching) services. The WLAN coverage on one hand provides an extra...