Aiming at the problem of cement ring sealing failure during deep high temperature shale gas exploitation, comprehensively considering influence characteristics multi-cluster fracturing multiple horizontal wells and formation temperature, cementing southwest region is taken as research object. After exposure to different temperatures (95?C 135?C) for times (5, 10, 20 times), axial triaxial tests...

OBJECTIVES The objective of this study was to design laser treatment protocols to induce sufficient thermal damage to a tumour embedded in a prostate model, while protecting the surrounding healthy tissue. METHODS A computational Monte Carlo simulation algorithm of light transport in a spherical prostatic tumour containing gold nanorods was developed to determine laser energy deposition. The ...

Laser induced damage threshold (LIDT) is an important optical indicator for nonlinear Potassium Dihydrogen Phosphate (KDP) crystal used in high power laser systems. In this study, KDP optical crystals are initially machined with single point diamond turning (SPDT), followed by water dissolution ultra-precision polishing (WDUP) and then tested with 355 nm nanosecond pulsed-lasers. Power spectral...