In this paper we construct a new family of flat Minkowski planes of group dimension 3. These planes share the positive half with the classical real Minkowski plane and admit simple groups of automorphisms isomorphic to PSL2ðRÞ acting diagonally on the torus. We further determine the full automorphism groups and the Klein–Kroll types of these flat Minkowski planes. 2000 Mathematics Subject Class...

In this study, we sought to assess the cardiopulmonary functions in three pediatric heart transplant recipients, two of whom are with dilated cardiomyopathy, whereas one is with cyanotic heart disease, in early postoperative period. Cardiopulmonary exercise testing was performed using an incremental cycling at 1 mo after surgery. The results revealed that our study subjects had obvious impairme...

Mandibular condyle plays an important role in the growth and reconstruction of the temporomandibular joint (TMJ). We aimed to obtain orthotropic elastic parameters of the condyle using a continuous-wave ultrasonic technique and to observe the effects of condylar elastic parameters on stress distribution of the TMJ using finite element analysis (FEA). Using the ultrasonic technique, all nine ela...

Objective: The objective is to obtain the stresses due to strip loading in orthotropic plate lying over an irregular isotropic elastic medium. Methods: Anti-plane strain problem with perfect bonding boundary conditions following by Fourier Transformation on the equilibrium equation are used to obtain the solution. The deformation field due to shear line load at any point of the medium consistin...

Investigations involving the experimental and numerical analysis of inkjet (powder-based) 3DP are relatively limited for cement mortar materials. This study, by using specimens, aimed to determine optimum strength 3D printed structural members in all three planes identifying compressive cubes, modulus elasticity Poisson’s ratio. In addition, this study analyse verify model cementitious (CP) pri...

In this paper, we derive the second-order crack opening displacement tensor for an arbitrarily oriented elliptical in elliptically orthotropic (EO) matrix. This result is obtained explicit closed form. The approach based on Saint-Venant’s idea of linear transformation between boundary value problems and isotropic bodies. solution utilizes classical representation ellipsoid where smallest aspect...