in this work we simulated the representative volume element (rve) of carbon nanotube (cnt) which is surrounded by high temperature superconductor (ybco) by using ansys finite element software. first we considered perfect model (for ybco and cnt) and investigated the effect of radius, length, and the number of nanotube in young’s modulus of the ybco by applying force on rve. then, a third region...

In this paper, uniform and variable edge microgeometry design inserts are utilised and tested for 3D turning process. In 3D tool engagement with workpiece, thickness of the chip varies from a maximum equal to the feed rate (at primary cutting edge) to a minimum on the tool’s corner radius (at trailing cutting edge). The ideal tool edge preparation should posses a variable configuration which ha...

The photothermal deflection technique is used to measure the thermal diffusivity of a metal+eramic composite. The present, as well as other data on composites are analyzed to estimate a value for the Kapitza radius, rk, which represents the effectivevalue of the thermal boundary resistance of heterointerfaces. Remarkably, the data from different metal+eramic composite materials lead to a simila...

The Lemaˆıtre and Schwarzschild analytical solutions for a relativistic spherical body of constant density are linked together through the use of the Weyl quadratic invariant. The critical radius for quasi-static gravita-tional collapse is shown to vary continuously from 9/8 of the Schwarzschild radius to the Schwarzschild radius itself while the internal pressures become locally anisotropic.

hepatic coccidiosis is considered as a major problem in rabbits which mortality rate may go high as a result of unhygienic maintenance with overcrowding. this study was aimed to determine abundance and pathologic changes of hepatic coccidiosis in rabbits of northwestern iran. a total of 320 rabbits (110 new zealand, 110 angora, and 100 native) in different sex and age groups were randomly se...

In recent years, hydroforming process has been applied in different industries such as aerospace, automotive and military industries due to its advantages, such as high dimensional accuracy, capability of forming complicated parts and high drawing ratio. Hydrodynamic deep drawing with radial pressure is one type of hydroforming process. In this paper, forming of cylindrical cups in hydrodynamic...

In critically ill infants and children, intravascular (IV) access is sometimes very difficult. In such cases intraosseous (IO) infusion should be used as the method of choice. However, in practice, different problems are experienced with this procedure. To overcome the practical problems and to confirm the efficacy of IO infusion in reversing hypovolemic shock, an animal model was used by ...

 It is known that the directed cycle of order $n$ uniquely achieves the minimum spectral radius among all strongly connected digraphs of order $nge 3$. In this paper, among others, we determine the digraphs which achieve the second, the third and the fourth minimum spectral radii respectively among strongly connected digraphs of order $nge 4$.  

Rabbit farming is a powerful source of dietary meat, rabbit fluff, and skins. The research was conducted at the farm Precarpathian State Agricultural Research Station Institute Agriculture Carpathian Region National Academy Agrarian Sciences. article describes creation new highly productive genetic populations rabbits identified as best options for crossing maternal paternal forms. Three breeds...

We have carried out a series of small scale collisional N-body calculations of single-mass star clusters to investigate the dependence of the lifetime of star clusters on their initial parameters. Our models move through an external galaxy potential with a logarithmic density profile and they are limited by a cut-off radius. In order to find scaling relations between the lifetime of star cluste...