Эгоизм как движущая сила пользовательской активности в социальных медиа и социальных сетях

This article is devoted to the question of functioning of social media and social networking. Represented issues propose the hypothesis of egoism as a driving force of users' activity in social media and social networking on Internet and take the election campaign of Barak Obama as an empirical platform to prove this supposition.В данной статье выдвигается гипотеза, которая рассматривает практический эгоизм как основную движущую силу пользовательской активности в социальных сетях и социальных медиа. Данная гипотеза подкрепляется анализом некоторых популярных социальных сетей и медиа

Specific RNA Interference in Caenorhabditis elegans by Ingested dsRNA Expressed in Bacillus subtilis

In nematodes, genome-wide RNAi-screening has been widely used as a rapid and efficient method to identify genes involved in the aging processes. By far the easiest way of inducing RNA interference (RNAi) in Caenorhabditis elegans is by feeding Escherichia coli that expresses specific double stranded RNA (dsRNA) to knockdown translation of targeted mRNAs. However, it has been shown that E. coli is mildly pathogenic to C. elegans and this pathogenicity might influence aging and the accuracy of the RNAi-screening during aging may as well be affected. Here, we describe a novel system that utilizes the non-pathogenic bacterium Bacillus subtilis, to express dsRNA and therefore eliminates the effects of bacterial pathogenicity from the genetic analysis of aging