To study the spatial distribution and scale of oil gas near faults in petroliferous basins, a prediction model is established for degree damage that different stages evolution exert on sealing ability mudstone cap rocks by calculating fault to rocks. This applied Nanpu 5th Structure results show at survey lines L2 L8, F1 Fault destroyed capacity rock 2nd member Dongying Formation (E3d2). The un...

background: despite widespread clinical uses of resin-modifi ed glass-ionomers (rmgis), their sealing ability is still a concern. this study evaluated the effect of delayed light activation (dla) of rmgi on marginal sealing in differently pretreated cavities. materials and methods: in this in vitro study, two standardized class v cavities were prepared on the buccal and lingual surfaces of 56 s...

introduction: the purpose of this study was to compare the apical sealing ability of lateral and vertical compaction techniques following immediate and delayed post space preparation. materials and methods: seventy-four distal and palatal roots of human extracted molars were instrumented and randomly divided into 4 experimental groups (n=15), two experimental control groups (n=5), and two posit...

for management of a symptomatic maxillary lateral incisor with dull pain on chewing, suppurative sinus tract, defective metal-ceramic crown and iatrogenic internal root resorption, an interdisciplinary approach was taken. two-visit nonsurgical treatment with calcium-enriched mixture (cem) cement, replacement of metal-ceramic crown with all-ceramic crown and corrective periodontal plastic surger...

introduction: in cases of limited access to the surgical site, an alternative approach is to obturate the canal prior to surgery. endodontic surgery is subsequently performed by root-end resection without retro-cavity preparation. this in vitro study was designed to compare the sealing ability of resected roots filled with either mineral trioxide aggregate (mta) or calcium enriched mixture (cem...

PURPOSE The merits of laparoscopic sealing devices have been poorly characterized. The purpose of this study was to compare two bipolar sealing devices [LigaSure V (LS) and Gyrus PK (GP)], an ultrasonic device [Harmonic Scalpel ACE (HS)] and a novel device using nanotechnology [EnSeal PTC (ES)]. MATERIALS AND METHODS The ability of all four 5 mm devices to seal 5 mm bovine arteries was tested...

Bone resorption in vertebrates relies on the ability of osteoclasts to assemble F-actin-rich podosomes that condense into podosomal belts, forming sealing zones. Sealing zones segregate bone-facing ruffled membranes from other membrane domains, and disassemble when osteoclasts migrate to new areas. How podosome/sealing zone dynamics is regulated remains unknown. We illustrate the essential role...

The mammary gland undergoes a complex set of changes to establish copious milk secretion at parturition. To test the hypothesis that signaling through the Rho pathway plays a role in secretory activation, transgenic mice expressing a constitutively activated form of the Rho effector protein PKN1 in the mammary epithelium were generated. PKN1 activation had no effect in late pregnancy but inhibi...