FROM the preparative aspect, the conventional paper chromatographic technique is rather limited, in that only a few micrograms of material can be spotted on a single strip or sheet, and the labour ...

They observed that the directive by the Minister of Education, Dr Olatunji Alausa for WAEC, NECO and other public examination bodies to migrate fully from paper-pencil mode to computer-based ...

The adventures of Mark Twain by CBS Sunday Morning on YouTube Robert Hirst is curator of the Mark Twain Papers at UC Berkeley, where a small army of editors has been laboring for six years to ...

This Bitesize article features AQA chemistry past papers, explores practice questions and worked examples to help students prepare for the chemistry GCSE exams.