Passive safety of high-speed passenger trains at accident collisions on 1520 mm gauge railways

The fundamental principles of the passive protection concept of high-speed passenger trains at accident collisions on 1520 mm gauge railways have been developed. The scientific methodology and mathematical models for the analysis of plastic deformation of cab frame elements and energy-absorbing devices (EAD) at an impact have been developed. The cab frame and EAD for a new-generation locomotive have been designed. The EAD prototype crash test has been carried out

Graphene on SiC(0001) inspected by dynamic atomic force microscopy at room temperature

10.3762/bjnano.6.93Beilstein Journal of Nanotechnology61901-90

Transformation of metallic boron into substitutional dopants in graphene on 6 H − SiC ( 0001 )

We investigate the development of the local bonding and chemical state of boron atoms during the growth of B-doped graphene on 6H−SiC(0001). Photoemission experiments reveal the presence of two chemical states, namely, boron in the uppermost SiC bilayers and boron substituted in both the graphene and buffer layer lattices. We demonstrate the participation of the dopant in the π electron system of graphene by the presence of the π∗ resonance in the near edge x-ray adsorption fine structure (NEXAFS) recorded at the B K-edge. The experimental findings are supported by NEXAFS simulations

On-Surface Synthesis and Characterization of [7]Triangulene Quantum Ring

Nano Letters21861–86

Ultra-high Yield On-surface Synthesis and Assembly of Circumcoronene into Chiral Electronic Kagome-honeycomb Lattice

Science Advacnes7eabf026

Наш опыт диагностики и лечения больных с боковыми кистами шеи

Мета дослідження — вивчення ефективності способів діагностики бічних кіст шиї. Завдання роботи — удосконалити комплексний спосіб візуалізації пухлиноподібних утворень на доопераційному етапі.The investigation results of the efficiency of the complex diagnosis of the lateral neck cysts are given. It is shown that the complex diagnosis within three technologies allows to differentiate lateral neck cyst from other similar and serious diseasesПриведены результаты изучения эффективности комплексной диагностики боковых кист шеи. Показано, что использование комплексной диагностики в рамках трех технологий позволяет максимально отдифференцировать боковую кисту шеи от других сложных и схожих заболеваний

Atomically precise bottom-up synthesis of -extended [5]triangulene

10.1126/sciadv.aav7717Science Advances57eaav771