AIM To examine the effect of condensation pressure on surface hardness, microstructure and compressive strength of mineral trioxide aggregate (MTA). METHODOLOGY White ProRoot MTA (Dentsply Tulsa Dental, Johnson City, TN, USA) was mixed and packed into cylindrical polycarbonate tubes. Six groups each of 10 specimens were subjected to pressures of 0.06, 0.44, 1.68, 3.22, 4.46 and 8.88 MPa respe...

In this article, a mathematical model capable of simulating the heat transfer cylindrical vessels whose properties are dependent on temperature is proposed. As case study, it compares, from an approach their and chemical migration characteristics as function reached, different materials commonly used for manufacture water bottles. More specifically, studied were aluminium, polyethylene terephth...

In this article we investigate aspects of turgor-driven plant cell growth within the framework of a model derived from the Eulerian concept of instability. In particular we explore the relationship between cell geometry and cell turgor pressure by extending loss of stability theory to encompass cylindrical cells. Beginning with an analysis of the three-dimensional stress and strain of a cylindr...

The major hemodynamic benefits of intra-aortic balloon pump (IABP) counterpulsation are augmentation in diastolic aortic pressure (Paug ) during inflation, and decrease in end-diastolic aortic pressure (ΔedP) during deflation. When the patient is nursed in the semirecumbent position these benefits are diminished. Attempts to change the shape of the IAB in order to limit or prevent this deterior...

Surface microrollers have emerged as a promising microrobotic platform for navigation in the circulatory system future drug/gene delivery applications. The comprises various vessels with different dimensions, blood flow velocities, and regimes. Therefore, performance of surface would vary vessels. Herein, microrollers, diameters between 5 50 μm, inside systemic circulation including veins, venu...

Equation of state and structure of hard-sphere fluids confined in a cylindrical hard pore were investigated at the vicinity of fluid-solid transition via molecular dynamics simulation. By constructing artificial closed-packed structures in a cylindrical pore, we explicitly capture the fluid-solid phase transition and coexistence for the pore diameters from 2.17sigma to 15sigma. There exist some...