D. S. Ivanov

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The fine structure of the jaw apparatus was studied by scanning electron microscopy in eight species of Patellogastropoda. The jaw apparatus is an unpaired two-layered dorsolateral structure with anterior and posterior wings attached to the odontophore by muscles. The jaw of Testudinalia tesulata (O.F. Müller, 1776) is a derivative of the cuticle typical(More)
Interaction between the phases of register allocation and instruction scheduling are often considered in publications devoted to optimizations for the final stage of compilation. Typically, it is proposed to adapt one of the phase for needs of another without their combination into a single unit. However, their integration can essentially reduce the time of(More)
Jaws of various kinds occur in virtually all groups of Mollusca, except for Polyplacophora and Bivalvia. Molluscan jaws are formed by the buccal epithelium and either constitute a single plate, a paired formation or a serial structure. Buccal ectodermal structures in gastropods are rather different. They can be nonrenewable or having final growth, like the(More)
PURPOSE Today intramedullary locked nails are widespread in treatment of diaphyseal long bone fractures of the lower limb. However, such nails have a number of drawbacks: complexity and duration of the installation, high axial stiffness, as well as the failure of locking screws and nail body. Expandable nails such as Fixion have several advantages over(More)
The aim of the current study is to demonstrate the effect of inter-ply delamination on stiffness degradation of multi-ply woven composites. Such a demonstration becomes possible due to new technique of modelling textile laminates. It is based on set of boundary value problems for unit cell of a single ply, where boundary conditions imitate interaction with(More)
PURPOSE This paper includes results of the first stage of research aimed at the development of recommendations for physicians in order to help them to choose a particular type of cerebral arteries aneurysms treatment. METHODS Recent studies show that the majority of aneurysms develop as a result of hemodynamic and degenerative lesions of the vascular(More)
This article reviews studies of Fixion expandable nail biomechanical properties in case of long bones fractures osteosynthesis. The purpose of this study was to systematize biomechanical researches dedicated to the expandable nail. There were found seven biomechanical studies published between 2005 and 2008. Among them, six studies are devoted to mechanical(More)
In the 1960s, one of the mysteries of strong interactions was the enormous proliferation of strong interacting particles or hadrons, which in addition, exhibit a striking property: the more massive the particles, the higher their spin with a linear correlations between the square of the particle mass and its spin. In Regge Theory [2] this correlation is(More)
This article presents new intramedullary (IM) nail design for femur diaphyseal fractures osteosynthesis. Biomechanical comparison of the two IM nails (standard locking and new developed) was conducted. Femur medullary canal architectonics was studied with the help of computer tomography (CT) data. Three-dimensional (3D) models of the femur, its transverse(More)