At the back of the stage a great aperture stands, often sealed by a pair of golden doors.
As pointed out by [11, 12] knowledge about the fracture apertures to be sealed is required and governs the applied pressure in order to achieve maximum penetration length in the rock cracks.
The use of an injection needle for the creation of a hole in the metaphysis eliminates the need to seal the aperture [31].
Damper sealing parameters. 5.
Many species use a calcareous or horny operculum (trapdoor) on the foot to seal off the aperture when the foot is withdrawn into the shell.
The aperture of this MMV was sealed with silicone tape and incubated overnight at 4°C.
Two different types of electrospray ionization source inlets were converted to LSIV sources by equipping the entrance of the atmospheric pressure inlet aperture with a customized cone that is sealed with a removable glass plate holding the matrix/analyte sample.
The results indicated that cement-based grout successfully sealed fractures down to a hydraulic aperture of about 50 μm but not below 30 μm.
The evaluation showed that apertures down to 14 μm needed to be sealed to cope with stipulations set for leakage into the tunnel (2 l/min and 100 m of tunnel).
A magnetic agitator (Bellco Glass, Inc., Vineland, NJ, USA) was used to continually mix flask contents at a speed of 225 rpm, and each flask was sealed with a rubber stopper containing apertures for probes, nutrient inlets/outlets, and sample harvesting.
Cement fractures may have apertures on the order of microns, which are difficult to seal with typical workover techniques.
