About Concentration
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.
Headlines: Harry 'in turmoil' and 'royal soap Oprah'
... The findings, not yet published in a peer-to-peer journal - say a trip to the cinema could be a boost for your heart and for you to benefit memory and Concentration...
Italy Holocaust survivor Liliana Segre under guard amid death threats
... Along with other Jewish prisoners transferred from Auschwitz in January 1945, Ms Segre was taken to the Ravensbrück Concentration camp in Germany...
To live where, if you have a good home care want to
...High Concentrations of substandard care in some areas no other choice let the family to accept an under-performing home for elderly and disabled relatives, an analysis suggests...