Dol Aleksandr Viktorovich Russia Saratov State University 1, Saratov State University, Russia, 410012, Saratov, Astrahanskaya st., 83 dzero@pisem.net Author's articles 3-dimentional mathematical model of blood flow with secondary heart theory The new approach to investigation of multilayer graphene mechanical properties by the finite-element method Threshold Values of Morphological Parameters Associated with Cerebral Aneurysm Rupture Risk Influence of Convolution Kernel and Beam-Hardening Effect on the Assessment of Trabecular Bone Mineral Density Using Quantitative Computed Tomography