Vol 118, No 3-4 (2023): ТЕМАТИЧЕСКИЙ БЛОК: ФУНДАМЕНТАЛЬНЫЕ НАУЧНЫЕ ИССЛЕДОВАНИЯ В ОБЛАСТИ ЕСТЕСТВЕННЫХ НАУК

Prediction system of seasonal weather and climate anomalies is developed on the basis of INM RAS climate model. The model includes block of atmospheric dynamics with surface and soil model, block of ocean and sea ice dynamics, and aerosol block. Initial states were generated as anomalies of atmospheric, oceanic and ice states derived from reanalysis added to model climatology. Simulation of weather anomalies in December–February and June–August, 1980–2014 was considered. It is shown that model is capable to reproduce anomalies of winter and summer seasons, including anomalies associated with North Atlantic Oscillation (NAO), Pacific North American Oscillation (PNA). The quality of seasonal forecasts with developed prediction system is close to the quality of other present day seasonal prediction systems. Operative simulations of weather anomalies in June–August, 2022, are considered. It is possible to use successfully the prediction system in operative regime.

The separation of complex hydrogen-containing gas mixtures in order to obtain technical and high-purity hydrogen is an important scientific and technical task that determines the possibility of further systematic development of the "green" economy. The article presents the results of a study of Fe and Ni containing membranes based on zeolite H-ZSM-5 and aluminum oxide, used to purify hydrogen from carbon monoxide, carbon dioxide and nitrogen. Mono and bimetallic Fe and Ni containing membranes were obtained by hot pressing aluminum oxide and H-ZSM-5 zeolite with subsequent secondary growth of the zeolite on the membrane surface, adsorption and reduction of active metals.
Synthesized mono and bimetallic samples Al2O3-ZSM-5-Fe, Al2O3-ZSM-5-Ni and Al2O3-ZSM-5-Fe-Ni with different content of active metals were investigated by various physicochemical methods including low-temperature nitrogen adsorption, chemical adsorption of ammonia, hydrogen, X-ray fluorescence analysis. The bimetallic sample Al2O3-ZSM-5-c-Fe-3%-Ni-2% has higher selectivity in the separation of hydrogen from complex mixtures compared to the results given in the literature. The high selectivity of the above membrane may be due to the possibility of a higher rate of hydrogen adsorption and its migration over the surface of bimetallic particles.

This article reviews approaches to the study of data on RNA-chromatin interactions. Data sources and the data processing methods and protocol we developed are described. The RNA-Chrom database (https://rnachrom2.bioinf.fbb.msu.ru) is also described. Some features of the data are reviewed and future plans are presented.

The work is devoted to the development of a method for diagnosing thermal overloads of metallization systems of ultra-large integrated circuits. The considered metallization systems with a thickness of 0.5 μm with sublayers with a thickness of 0.1 μm (the width of the Al film was 7–70 μm) were exposed to single rectangular current pulses with a duration of no more than 600 μs and an amplitude of up to 8·1010 A/m2.Temperature fields were modeled using experimental oscillograms, melting processes in multilayer thin-film systems were analyzed. It was found that when exposed to a single rectangular current pulse with a duration not exceeding 80 μs and an energy of 85 mJ, the processes of melting of a metal film are the priority process of destruction of the structure. An increase in the pulse duration (τ>80 μs) changes the priority of thermal degradation, and contact melting becomes the main mechanism. It is shown that the presence of titanium and silicon oxide sublayers increases the thermal "load" on the metallization layers and can lead to a decrease in the critical current density. Using the example of the Al–Ti–Si system, it was revealed that isothermal annealing leads to an improvement in the heat-conducting properties of the system and an increase in critical current densities.