1 The molten glass can be poured into a mold and let cool. 2  This method was used by the Egyptians, and it is also how many lenses are created today. 3  A large amount of molten glass can be gathered at the end of a hollow tube, which is then blown into while the tube is turned.
Indirect costs vary depending on the indirect cost base. Indirect costs are assessed either on a Total Direct Cost (TDC) basis or a so-called Modified Total Direct Cost basis (MTDC). Check sponsor guidelines for direction.
TDC: The indirect cost rates for most non-federal projects are applied to a total direct cost (TDC) base. The rates apply to all direct costs. Clinical Trials: For federally-sponsored clinical trial site activity, use the OSA rate based on modified total direct costs (MTDC).