It added that though the eruption had paused early Tuesday, gas continues to emanate from a fissure system
that is now 2.5 miles (four kilometers) long -- and more seismic activity and lava flow was expected.
Code 1 was selected if a tiny, thin red shimmer in the pits and fissure system
is observed, which can slightly come up the slopes (walls) of the fissure system
The first one follows the fissure system of WNW-ESE direction and is situated approximately up-right to the slope.
Farther from the edge of the block in the more integral part of the sandstone body, fissure systems, suffosion and gravity form pseudokarst phenomena.
Before sealing, each fissure system
was cleaned of any plaque residue by bristle brush and prophylactic paste.
The images showed geological evidence of catastrophic floods caused by volcanic activity in a fissure system
called the Cerberus Fossae.
This test showed that use of etch and Prime and Bond[R] was significantly more likely to result in placement of a FS which remained covering more of the pit and fissure system
over a 12 month period than use of Xeno[R] III for enamel preparation.
Most significant is the fissure system
of complementary directions NNE-SSW and ESE-WNW, which also shapes outer form of the Brana outcrop (Fig.
(6-9) This finding might, in part, be ascribed to the presence of remnants of glass-ionomer observed in the deeper parts of pits and fissure systems
, (10) preventing stagnation of cariogenic plaque in difficult-to-clean deep pits and fissures due to the excellent adhesion of glass-ionomers to enamel and the fact that the material fractures internally rather than at the enamel-sealant interface.
(15,34) This could be attributed to the deep narrow fissure systems
selected for this trial which might result in an entrapment of air voids under relatively thick RMGI, hence reducing the strength of adhesive joints.