In 2011, there were 6,767 new cases of oral cancer in the UK: 4,510 (67%) in men and 2,257 (33%) in women, giving a male:female ratio of around 20:10.[ 1-4 ] The crude incidence rate shows that there are 15 new oral cancer cases for every 100,000 males in the UK, and 7 for every 100,000 females.
A strut is a structural component designed to resist longitudinal compression. Struts provide outwards-facing support in their lengthwise direction, which can be used to keep two other components separate, performing the opposite function of a tie.
The term structural system or structural frame in structural engineering refers to load-resisting sub-system of a structure. The structural system transfers loads through interconnected structural components or members. Commonly used structures can be classified into five major categories, depending on the type of primary stress that may arise in the members of the structures under major design loads.