Mycobacteriophages are viruses that infect mycobacterial hosts such as Mycobacterium smegmatis and Mycobacterium tuberculosis. All mycobacteriophages characterized to date are dsDNA tailed phages, and have either siphoviral or myoviral morphotypes. However, their genetic diversity is considerable, and although sixty-two genomes have been sequenced and… (More)
In the Middle East, species of Garra are believed to have invaded the area in two independent waves from the Indo-Malayan biogeographic region. This hypothesis is based on the structure of the mental disc, a unique specialization of the lower lip, which is believed to be an adaptation to fast-flowing waters. While several species have such a mental disc,… (More)
| This communication presents a modiied lattice structure for IIR lters, which exhibits pleasant scaling properties at no additional computational or memory cost when the reeection coeecients are close to 1. With this structure, the gain at the resonance of a second-order purely-recursive section is nearly independent of the bandwidth.