The temperature dependence of fatigue crack growth in stage IIb was investigated Ti–0.49 mass%O with an alpha single phase. It found that the rate independent at temperatures above 300 K. EBSD maps beside showed prismatic slips 〈a〉 dislocations were dominantly activated during growth. reason why is discussed numerical crystal plasticity analysis. shown local strain notch tip higher than macrosc...

BACKGROUND AND PURPOSE Long-term follow-up data of coiled basilar tip aneurysms are scarce, and little is known about the risk of late aneurysm-related adverse events. We followed a cohort of 154 patients with basilar tip aneurysms coiled between 1995 and 2006. MATERIALS AND METHODS Imaging and clinical data were retrospectively reviewed. The incidence and timing of retreatment, rebleeds, and...

Despite there are some debates with catheter closure of the patent foramen ovale (PFO), 1) it can be an option in reducing the risk of recurrent paradoxical embolism and incidence of migraines. Although it has been a safe and promising technique with a low incidence of periprocedural complication, 2) some of complications during the procedure can be fatal. We found a linear, highly mobile lesio...

An exact analytical solution, based on the method of images, is obtained for the description of the electric field between an atomic force microscope (AFM) tip and a thin dielectric polymer film (30 nm thick) spin coated on a conductive substrate. Three different tip shapes are found to produce electrostatic pressure above the plasticity threshold in the polymers up to 50 MPa. It is shown exper...

We report for the first time how electrophoretic migration of ions and charged nanoparticles (NPs) in low electrolyte concentration solutions affects positive feedback in scanning electrochemical microscopy (SECM). The strength of the electric field in the gap between either the tip and the substrate, or the tip and counter electrodes, is shown to increase proportionally to the decrease in gap ...