Ilia Nikiforov

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We explore the generalization to the helical case of the classical Ewald method, the harbinger of all modern self-consistent treatments of waves in crystals, including ab initio electronic structure methods. Ewald-like formulas that do not rely on a unit cell with translational symmetry prove to be numerically tractable and able to provide the crucial(More)
During the past one to two decades, practicing physicians and clinical researchers have shown an increasing interest in the psychogenic factors (especially chronic anxiety) that contribute to the development of emotional behavior disorders and anthropogenic occupational malfunctions. A comprehensive medical psychological assessment of 80 patients with high(More)
While the presence of axial screw dislocations in helical nanowires and nanotubes is known to be due to the growth process, their effect on the electronic properties remains unexplored. Relying on objective molecular dynamics simulations coupled to density functional tight-binding models for ZnO and Si, and supporting density functional theory calculations,(More)
Based upon the analysis of 1015 case records of patients, aged 16-70, with different hip joint pathology types, carried out during 1985-1990, there were revealed mistakes and complications after reconstructive-restorative operations. In the group of patients with dysplastic coxarthrosis they noted rather frequent (12% of cases) formation of "tectum" in(More)
The purpose of this paper is to address issues pertaining to the substantiation of trends in improving the narcological service with regard to the present restructuring of antialcohol policy. It is necessary to give up the practice of locating narcological facilities in accommodated premises and to develop the network of dispensaries by constructing new(More)
By combining experiments performed on nanoribbons in situ within a high-resolution TEM with objective molecular dynamics simulations, we reveal common mechanisms in the bending response of few-layer-thick hexagonal boron nitride and graphene nanoribbons. Both materials are observed forming localized kinks in the fully reversible bending experiments.(More)
A study of a new regimen of insulin comatose therapy by intravenous instillation has shown the feasibility of determining the minimal comatose dose of insulin and achieving the comatose state in the first days of insulin therapy. This method makes it possible to utilize the advantages of insulin comatose treatment (a more marked arresting antipsychotic(More)