In the present study, we designed a ring rolling preform for producing a ringed product with a grooved outer circumferential surface. One of the most common defects in the profile of a ring rolling process is unfilling, which occurs when the deformation amount of product is small or the depth of the groove in the outer surface is large. To prevent unfilling, the deformation amount should be inc...

We developed a Monte-Carlo code for the treatment of the radiative transfer in arbitrary clumpy dust configurations. Both the radiation of the (central) energy source(s) and the thermal emission of the dust are considered. Intensity and polarization maps of the modelled objects can be computed. As the first application of our code we studied the radiative transfer in a spherical two-phase clump...

The emergence of low cost sensors capable of providing texture and depth information of a scene is enabling the deployment of several applications such as gesture and object recognition and three-dimensional reconstruction of environments. However, commercially available sensors output low resolution data, which may not be suitable when more detailed information is necessary. With the purpose o...

The fabrication of the micro-channel array through micro-embossing on an ultrafine-grained (UFG) LZ91 Mg-Li alloy was investigated in this paper. Micro-embossing tests indicated that the depth of the channels increase with increasing temperatures. Micro-array channels with widths ranging from 50 μm to 200 μm were performed with an applied force of 2 kN at 423 K, following by a dwell time of 60 ...

UNLABELLED ADMISSION: Emdogain is the only one biomaterial using biomicra effect which is practiced in periodontal surgery. PURPOSE The purpose of the study was a clinical and radiological assessment of bone loss treatment using Emdogain. MATERIAL AND METHODS There were 19 persons examined (11 women and 8 men) which have bone loss treated. Initial and monitoring examination after 10 months ...

The purposes of this investigation were 2-fold: to study the physical properties and sealing ability of Viscosity Enhanced Root Repair Material (VERRM); and, to compare them with Mineral Trioxide Aggregate (MTA). VERRM has a composition similar to mineral trioxide aggregate, with handling characteristics and consistency similar to commercially available materials such as IRM and Super EBA. The ...

The cardiovascular effects of a single dose of two short-acting intravenous anaesthetics, methohexitone and propanidid, were studied in ten healthy male volunteers. The doses used were selected to produce clinical anaesthesia of similar depth and duration. Methohexitone increased heart rate initially without changing arterial or filling pressures. The C(a-v)02 difference was decreased, suggesti...

We present experimental and numerical results of the effect that a partial discharge has on the morphological and micro-mechanical properties of non-spherical, convex particles in a silo. The comparison of the particle orientation after filling the silo and its subsequent partial discharge reveals important shear-induced orientation, which affects stress propagation. For elongated particles, th...

Human visual perception is a fundamentally relational process: Lightness perception depends on luminance ratios, and depth perception depends on occlusion (difference of depth) cues. Neurons in low-level visual cortex are sensitive to the difference (but not the value itself) of signals, and these differences have to be used to reconstruct the input. This process can be regarded as a 2-dimensio...