Iran’s Long Reach

The long reach of telomeres.

The primary purpose of telomeres is to protect chromosome ends from erosion during cell division cycles. New observations suggest an additional function for telomeres, namely in gene silencing via formation of long-range chromatin interactions.

Long-reach Technologies Planet Superpon a a Long-reach Optical Access Technologies

s broadband uptake increases globally, the services offered are becoming increasingly band-width-intensive. A service that continues to increase bandwidth requirements is high-definition television (HDTV), which requires in the region of 8 Mb/s per channel. For telecommunications (telecoms) networks to support a single channel of HDTV plus data and telephony services simultaneously, the minimum...

Evolution: The long evolutionary reach of viruses

The structure of a phage capsid protein provides good evidence this phage shares ancestry with an animal virus. In this and similar cases, either the viral lineages predate the emergence of the three contemporary domains of life, or viruses have been leaping the phylogenetic chasms that separate the domains.

The Long Reach of Early childhood poverty

Designing Resilient Long-Reach Passive Optical Networks

We report on an emerging application focused on the design of resilient long reach passive optical networks using combinatorial optimisation techniques. The objective of the application is to determine the optimal position and capacity of a set of metro nodes. We specifically consider dual parented networks whereby each customer must be associated with two metro nodes. An important property of ...