1. Direct absorption measurements on very thin filters made of graphite and isotropic carbon confirmed the various diminution values.

2. The direct absorption edge was then studied by means of transmission (T = 15 K) and thermoreflectance (T = 35 and 51 K) measurements.

3. ‘Biologically based integrated weed management is the basis of our programs.’ ‘This discovery encouraged chemists to explore the molecular structures of Biologically active chemicals.’ ‘Ultraviolet radiation is able to damage DNA and other Biologically important molecules through direct absorption.’