Some regions in Kazakhstan and Russia have a long winter season. On average, the ice freezes is in early December and the end of March. In this study, the authors investigate the different type of soil, four specimens of soil with different engineering characteristics and soil classification by a unified classification method. The freezing test was carried out for four ...

The experimental setup KOLKHIDA has been designed to study the interactions of polarized neutrons with polarized nuclei, in particular to study the neutron nuclear precession (nuclear pseudomagnetism) and also for studying magnetic properties of crystals. The investigation has been performed at the Frank Laboratory of Neutron Physics, JINR.

Methylammonium lead iodide perovskite materials have been shown to be efficient in photovoltaic devices. The current fabrication process has not been perfected, leaving defects such as site vacancies, which can trap charge and have a detrimental effect on photogenerated charge carriers. Here focus is placed on the effect a Pb site vacancy has on the charge-carrier dynamics following ...

In this article, we define promising materials for creating the structure of a nonporous cathode-electrolyte. The synthesis of initial powders by the method of self-propagating high-temperature synthesis is studied and described. The specific surface area, morphology and phase composition of powders were investigated.

Cathode materials with mixed ion-electron conductivity (MIEC) are necessary for the development of low or intermediate temperature solid oxide fuel cells. Perovskite and perovskite-related materials are promising candidates on this role. In the review the conductivity and the thermal expansion of materials with various types of perovskite-related structures such as pure ...

In this paper, a two-hop amplify-and-forward relaying system, where an energy-constrained relay node entirely depends on the energy scavenged from the source signal, is investigated. This paper analyzes the performance of the energy-harvesting (EH) protocols, namely, ideal relaying receiver, powersplitting relaying (PSR), and time-switching relaying (TSR), over independent but ...

The article focuses on paramount targets for developing “smart” cities in the Republic of Kazakhstan. The conducted studies substantiate the effectiveness of reforms in the housing and utilities sector of Kazakhstan in accordance with the branch state programs and the need for a comprehensive solution of the existing problems for the further successful development of ...

In modern construction, glued wood is used mainly by Scandinavian countries, Canada, the USA and Russia. It is rational to use glued wood not only in low-rise housing construction, but also as supporting and protecting structures of large-span public buildings. Large-span glued wooden structures have become popular in modern construction and are widely used for public ...

Hyperfine interactions of 57Fe nuclei in Fe100-xNix nanostructures synthesized in polymer ion-track membranes were studied by Mössbauer spectroscopy. The main part of obtained nanostructures was Fe100-xNix nanotubes with bcc structure for 0 ≤ x ≤ 40, and with fcc structure for 50 ≤ x ≤ 90. The length, outside diameter and wall thickness of nanotubes were 12 µm, 400 ± 10 nm and ...