The present study focuses on effects of initial pH on dibenzothiophene (DBT) desulfurization via 4S pathway by growing cells of Ralstonia eutropha. For so doing, temporal changes of biomass concentration, glucose as a sole carbon source, pH value, and 2-hydroxybiphenyl (2-HBP) formation have been monitored during the bioprocess. The biomass concentration has been modeled by the logistic equatio...

The gastrointestinal (GI) tract represents a complex ecosystem in which a balance exists between the intestinal microflora and the host. The microflora comprises predominantly of facultative anaerobes e.g. lactobacillus and obligate anaerobes e.g. bifidobacterium. Aerobic organisms are not present in the GI tract of healthy individuals except Pseudomonas in very small numbers. Most of the gut m...

Traditionally, viruses and other malware were distributed using push techniques – viruses directly or malware authors actively distributed copies around. With the exception of auto-executing worms this method of distribution requires user intervention – a user has to click on an email attachment or launch a program. And users have been told for years to be very cautious about all unsolicited em...

This article analyzes the information about Sighnoq, one of cities located in middle reaches Syrdarya, its geographical location, topography, population, trade and economic relations, important strategic center capital medieval sources.