Superhard Phases of Simple Substances and Binary Compounds of the B-C-N-O System: from Diamond to the Latest Results (a Review)

The basic known and hypothetic one- and two-element phases of the B-C-N-O system (both superhard phases having diamond and boron structures and precursors to synthesize them) are described. The attention has been given to the structure, basic mechanical properties, and methods to identify and characterize the materials. For some phases that have been recently described in the literature the synthesis conditions at high pressures and temperatures are indicated.Comment: Review on superhard B-C-N-O phase

Marketing education in Australia before 1965

Prior to 1965, there was limited activity in marketing education in Australia at the university level. A handful of marketing units, mostly poorly attended, were offered at Universities which had an advertising and sales background, a growing economics context and a strong US influence. However, changes in the system of education and business demand in the 1970s and 1980s have resulted in hundreds of marketing-related units now being offered to thousands of students every year