The aim of this paper is to investigate and optimize surface quality and geometrical characteristics in drilling process of AISI H13 steel, because they are critical items for precision manufacturing. After conducting the experiments, two regression models are developed to extensively evaluate the effect of drilling parameters on process outputs. After that, evolutionary multi-objective optimiz...

In this publication, we have developed a simple and quick isolation method of stem cells from the umbilical cord. Usually, cord is waste product during child delivery procedure, but cords contain valuable called mesenchymal stroma (also MSCs), which can be basis for different applications e.g., testing effect therapeutic compounds as well development cure degenerative diseases like bone cartila...

The QCD axion and an axion-like particle (ALP) are compelling candidates of dark matter. For the axion, it is known that when Peccei-Quinn (PQ) symmetry spontaneously broken after inflation, large initial fluctuation can lead to clump formation. On other hand, already during has been believed formation does not occur due small amplitude fluctuation. We revisit this prevailing understanding, con...

Fiber reinforced polymer (FRP) material is currently being produced in different configurations and widely used to strengthen and retrofit concrete structures and bridges. It is also possible to apply other strengthening methods without changing the appearance or the dimensions of the structure. Near Surface Mounted (NSM) is a recent strengthening method using CFRP bars (rods or laminate strips...