81.   Phytoplankton in Antarctic waters are being damaged by ultra-violet radiation because of the opening of the ozone hole over the South Pole, according to NASA scientists.

82.   The incident involved the overriding of a safety interlock, enabling the inadvertent opening of a radiation-shielding door.

83.   Security arrangements for the opening of mail etc have to be made watertight.

84.   Many larger personal injury firms have augmented key date systems by generating reports at various intervals from the opening of a case.

85.   Indeed, a number of students suggested that this type of cataphoric reference was a common enough characteristic of the openings of literary texts.

86.   And the repolarization is associated here with the opening of potassium channels.

87.   This then, this depolarization then allows the opening of voltage gated calcium channels, the calcium inside rises and contraction occurs.

88.   That clearly has proved to be attractive from other routes outside this immediate area with the opening of the southern bypass.

89.   She drew a breath as he gazed at it for an instant, watching its slow movements, the gentle opening of its tiny mouth as if expressing surprise.

90.   She was jolted out of her reverie by the noisy opening of the ward doors, and the rattling of a trolley being pushed between them.