In this research, Böhler K340 cold work tool steel was subjected to three different heat treatment protocols, conventional (CHT), shallow cryogenic (SCT), and deep (DCT). The study compares the effect of SCT DCT on microstructure consequently selected mechanical properties (micro- macroscale hardness impact toughness). shows no significant difference in after treatments. However, microhardness ...

OBJECTIVES To assess the effect of two different physical therapy interventions in patients with stable coronary heart disease and non-cardiac chest pain. METHODS A randomized controlled trial was carried out at a university hospital in Norway. A total of 30 patients with known and stable coronary heart disease and self-reported persistent chest pain reproduced by palpation of intercostal tri...

heat stress is a common occupational health hazard at outdoor workplaces especially in a hot-humid climate. overheating of the body can cause a number of problems, including heat rash, heat cramps, dizziness, heat exhaustion, and heat stroke. the present study aimed to assess heat stress indices including di, wbgt, and sw req /phs, as a mean to estimate the heat load on the employees of a petro...

The cryogenic system for the KSTAR superconducting magnets has been commissioned. It consists of a cold box, distribution boxes (DB) and cryogenic transfer lines. The cold box and DB #1 provide 600 g/s of supercritical helium to cool the superconducting (SC) magnets, their SC bus-lines, and the magnet support structures. It also provides 17.5 g/s of liquid helium to the current leads and suppli...