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Studies of free radicals on surfaces are of interest for several reasons: the spontaneous or stimulated formation of radicals from adsorbed molecules may represent one possible mechanism for heterogeneous catalysis. In some cases the radicals are ionic, indicating that primary oxidation and reduction reactions occur. Radicals can also be used as probes to investigate diffusion processes on catalytic surfaces. The first direct observations were made more than 30 years ago, but detailed studies of structure, reactions and mobility have only recently become feasible with the advent of powerful...

Written for staff in schools and colleges, this book offers the challenge and support necessary to understand, analyze and adopt coaching, mentoring and peer-networking mechanisms as an essential part of the development of professional learning within an organisation. Drawing on the new national strategy for professional development, it emphasises the importance of learning with and from other colleagues, helping your organisation to become a professional learning community and supporting the drive to raise standards and attainment.

Organised into nine distinct but interrelated...