SciELO

Chemical equilibrium in the complexation of first transition series divalent cations Cu2+, Mn2+ and Zn2+ with chitosan

This study provided the data for calculating the stability constants formed in the aqueous HCl equilibrium of chitosan and Cu2+, Mn2+ and Zn2+, and determined the species distribution diagrams to show ...
Nature

Hydrogen peroxide: a metabolic by-product or a common mediator of ageing signals?

Nascimur uno modo, multis morimu ('in one way we are born, in many ways we die'), and there is probably no single way to age. Indeed, so far there is no single accepted explanation or mechanism of ...
The Independent

Major mobile provider lost nearly 400,000 customers thanks to price hikes

For free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Virgin Media O2 has issued a warning regarding ...
Reuters

Virgin Media O2 owners to buy British fibre firm Substantial for $2.7 billion

Feb 18 (Reuters) - A consortium including Liberty Global (LBTYA.O), opens new tab agreed on Wednesday to buy British alternative fibre provider Substantial Group for 2 billion pounds ($2.72 billion) ...
thorax.bmj

BTS guideline for oxygen use in adults in healthcare and emergency settings

Definitions of hypoxaemia, hypoxia, type 1 respiratory failure and hyperoxaemia Definition of hypercapnia and type 2 respiratory failure Definition of acidosis (respiratory acidosis and metabolic ...