Otosclerosis is a circumscribed disease of the enchondral bone of the otic capsule. It is characterized by alternating phases of bone resorption followed by replacement with dense sclerotic bone. The first identification of this disease was made by Valsalva in 1704 in a description of the bony obliteration of the oval window in a patient with an aquired deafness [64]. The term otosclerosis was ...

Curved tubes of non-circular cross section are widely used in various fields technology. The change the planned operating modes technological processes is associated with wear executing mechanisms, which caused by unstable frequencies and amplitudes oscillations. Thus, issue determining oscillation parameters these elements becomes more significant. technique results tests for stresses, displac...

We introduce a simplified model for the minimization of the elastic energy in thin shells. This model is not obtained by an asymptotic analysis. The nonlinear simplified model admits always minimizers by contrast with the original one. We show the relevance of our approach by proving that the rescaled minimum of the simplified model and the rescaled infimum of the full model have the same limit...

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A straight tube with a smooth axisymmetric constriction is an idealised representation of a stenosed artery. We examine the three-dimensional instability of steady flow plus an oscillatory component in a tube with a smooth 75% stenosis using both linear stability analysis and direct numerical simulation. These flows become unstable through a subcritical period-doubling bifurcation involving alt...

Morpho-anatomical features in leaves, stems and unripe fruits of Solanum pseudocapsicum L., Solanaceae, were investigated by histological methods. Anatomically the plant may be characterised by the presence of uniseriate trichomes, anomocytic stomata, calcium oxalate needles in leaves while presence of oval to circular compound starch grains, angular vessels, vertically upright, uni-biseriate r...

In this study, the pressure drop and heat transfer characteristics of smooth tube internal helically micro-finned tubes with two different fin-to-fin height ratios i.e., equal fin alternating height, are computationally analysed. The is analysed for proof concept reduction. A single phase steady turbulent flow model used a Reynolds number ranging from 12,000 to 54,000. Water as working fluid in...

It is know that a heat exchange tube with flat-oval profile has excellent thermal and aerodynamic characteristics in contrast to round tube. Thus, the same planes, flat significant increase efficiency compared tube, which widely used industry. However, at present, there are limited number of publications on study transfer aerodynamics inside pipe.
 In this paper, we present methodology res...