The duplex brain

Full-Duplex Relaying with Half-Duplex Relays

We consider “virtual” full-duplex relaying by means of half-duplex relays. In this configuration, each relay stage in a multi-hop relaying network is formed by at least two relays, used alternatively in transmit and receive modes, such that while one relay transmits its signal to the next stage, the other relay receives a signal from the previous stage. With such a pipelined scheme, the source ...

Duplex DNA

This article describes the sequence-specific isolation and purification of intact double-stranded DNA (dsDNA) by oligonucleotide/PNA-assisted affinity capture (OPAC). The OPAC assay is based on selective tagging of a DNA duplex by biotinylated oligodeoxyribonucleotide (ODN) through formation of a so-called PD-loop. The PD-loop is assembled with the aid of a pair of PNA “openers”, which allow se...

Zipper - a exible duplex method for VDSL I Introduction II The Zipper Duplex Method

A novel duplex scheme for DMT-based VDSL systems on copper wire pairs is introduced. This method, named Zipper, uses different subcarriers in opposite transmission directions to divide the available bandwidth between the two directions. It provides exceptional versatility when it comes to dividing capacity between up and downstream. The scheme has high duplex efficiency, low latency, and most i...

Appendix Vermiformis Duplex.

Duplication of the alimentary tract is uncommon but duplication of the appendix is rare. Basu et al. (1959), in reporting 28 cases of duplication of the alimentary tract, had no case of appendix duplex. Picoli ( 1892) reported the first case of apendix duplex in a female patient who had associated anomalies of duplication of the entire large bowel, two uteri with two vaginae, ectopia vesicae an...

Duplex Stability & Nuclease Resistance