Aim. A new manufacturing method aiming at to producing more flexible and resistant NiTi endodontic instruments has been recently developed (Hyflex, produced with CM wire). The purpose of the study was to determine whether this new manufacturing method produces NiTi instruments (Hyflex) of superior flexibility and/or superior resistance to cyclic fatigue, when compared with instruments produced ...

We study complexified Harmonic Oscillator with a position dependent mass, referred to in the present paper as Exotic Oscillator (EO), in arbitrary dimensions. The real space EO has an interesting dynamics: in the equation of motion the full Hamiltonian operator appears in place of the frequency parameter in a Harmonic Oscillator. We reveal some generic features in the constraint structure of th...

BACKGROUND The efficacy of decision making based on longitudinal spirometric measurements depends critically on the precision of the available data, which is determined by the magnitude of the within-person variation. AIMS Firstly, to describe and investigate two statistical methods-a pairwise estimate of within-person standard deviation s(p) and the reliability coefficient G-for use in the m...

multiple sclerosis (ms) is an inflammatory and autoimmune disease.ms is characterized by blood brain barrier breakdown, inflammation, axonal injury, degeneration of the myelin sheath and etc. a significant association between inflammation and degeneration of neurons is observed in the brain. also active ms lesions always associated with inflammation thus inflammation is a target for treatment o...