background: bleaching the discoloured teeth may affect the tooth/composite interface. the aim of this in vitro experimental study was to evaluate the effect of vital tooth bleaching on microleakage of existent class v composite resin restorations bonded with three dental bonding agents.     methods: class v cavities were prepared on buccal surfaces of 72 intact, extracted human anterior teeth w...

Patients with Rett syndrome are known to respond well to music irrespective of their physical and verbal disabilities. Therefore, the relationship between auditory rhythm and their behavior was investigated employing a two-dimensional motion analysis system. Ten female patients aged from three to 17 years were included. When music with a simple regular rhythm started, body rocking appeared auto...

AIMS Current attempts of improving patient selection in cardiac resynchronization therapy (CRT) are mainly based on echocardiographic timing of myocardial velocity peaks. Regional myocardial function is neglected. Apical transverse motion (ATM) is a new parameter to quantify apical rocking as an integrative surrogate of both temporal and functional inhomogeneities within the left ventricle. In ...

The capacity for self-control is critical to adaptive functioning, yet our knowledge of the underlying processes and mechanisms is presently only inchoate. Theoretical work in economics has suggested a model of self-control centering on two key assumptions: (1) a division within the decision-maker between two 'selves' with differing preferences; (2) the idea that self-control is intrinsically c...

Understanding the out-of-plane behavior of unreinforced masonry walls is crucial in seismic assessment existing buildings. Here, dynamic response a vertical spanning strip wall, connected to flexible diaphragm at top, investigated. Despite simplicity model, two rocking rigid bodies elastically restrained highly nonlinear. This due different phenomena: when motion system may assume configuration...

We present a program that uses an optimization algorithm to fit rocking curves of ion-implanted semiconductors. This is an inverse problem that cannot be solved by simple methods. However, using recursion formulae for rocking curve calculations and a model of ion distribution after implantation, it is possible to fit experimental data with a general-purpose optimization method. In our case, we ...

Abstract Mortar-less construction with interlocking bricks has many advantages, such as improved efficiency and relatively low requirements on labour skills. Nevertheless, the seismic performance of brick structures is not well understood yet. In this paper, laboratory tests numerical modelling are carried out to investigate behaviour walls. Laboratory shaking table performed a scaled reinforce...