Ultrafine-grained Al matrix nanocomposites, reinforced with Al2O3 nanoparticles, were produced from milled powders, either by equal channel angular pressing (ECAP), at room or high temperature, without back pressure, spark plasma sintering (SPS). Their microstructures, mechanical properties (compression, hardness, and sliding wear), thermal stabilities (thermally induced softening cracking) com...

The degradation processes of two self-polishing antifouling coatings containing copper-based agents (CuSCN and Cu2O) in 3.5% NaCl solution the protection effect coating systems were studied by electrochemical impedance spectroscopy (EIS), Fourier transform infrared (FTIR) scanning electron microscope (SEM/EDS) methods. results demonstrate that after immersion for 1525 d at room temperature, sti...

We conducted an experimental and analytical study to understand the mechanisms and dominant parameters for ogive-nose rods and 7.62mm APM2 bullets that perforate 5083-H116 aluminum armor plates. The 20-mm-diameter, 95-mm-long, ogive-nose, 197g, hard steel rods were launched with a gas gun to striking velocities between 230-370m/s. The 7.62-mm-diameter, 10.7g, APM2 bullet consists of a brass jac...

Delirium is the second most common psychiatric diagnosis among hospitalized cancer patients. There are no previous studies on postoperative delirium after radical cystectomy. The relation between postoperative delirium and mortality has not been studied in cancer patients. We designed this observational prospective cohort study in order to determine the incidence and risk factors for postoperat...