SnO-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application.

Porous nanocomposites using two (tin dioxide-silica dioxide) and three (tin dioxide-indium oxide-silica dioxide)-component systems for gas sensors were created with the sol-gel method. To understand some of the physical-chemical processes that occurred during the adsorption of gas molecules on the surface of the produced nanostructures, two models-the Langmuir model and the Brunauer-Emmett-Teller theory-were used to carry out calculations. The results of the phase analysis concerning the interaction between the components during the formation of the nanostructures were obtained through the use of X-ray diffraction, thermogravimetric analysis, the Brunauer-Emmett-Teller technique (to determine the surface areas), the method of partial pressure diagrams in a wide range of temperatures and pressures and the results of the measurement of the nanocomposites' sensitivity.

Step-By-Step Modeling and Demetallation Experimental Study on the Porous Structure in Zeolites.

The organization of microporous space in zeolites is discussed. A new step-by-step model is proposed that explains the principles of organizing the hierarchy of microporous space at the stage of assembling zeolites from elements of minimal size: a primary building unit, secondary building units, tertiary building units or building polyhedra, a sodalite cage, and a supercage. To illustrate the stepwise hierarchical porous structure of nanomaterials, the following zeolites with small and large micropores have been selected as the model objects: sodalite (SOD, the maximum diameter of a sphere that can enter the pores is 0.

[EPIDEMIOLOGICAL FEATURES OF PAPILLOMAVIRUS INFECTIONS AND CERVICAL CANCER IN THE REPUBLIC OF BASHKORTOSTAN AND THE KALININGRAD REGION].

In the context of improving cancer prevention programs, it becomes relevant to justify the introduction of regional HPV cervical cancer screening programs based on a study of the prevalence of human papillomavirus infection and cervical cancer. Aim: to identify the main patterns of the prevalence of human papillomavirus infection and cervical cancer in Bashkortostan and the Kaliningrad region for the scientific substantiation of the criteria for the adoption of regional screening programs. A prospective analytical cohort single-stage observational examination of 3428 women of the Republic of Bashkortostan and 1246 women of the Kaliningrad region was carried out, as well as a retrospective observational analytical study of cervical cancer incidence in Bashkiria and the Kaliningrad region according to the official statistics from 2011 to 2020 compared to Russian indicators.

Fractal-Percolation Structure Architectonics in Sol-Gel Synthesis.

It was developed a new technique to assess micro- and mesopores with sizes below a few nanometers. The porous materials with hierarchical fractal-percolation structure were obtained with the sol-gel method. The tetraethoxysilane hydrolysis and polycondensation reactions were performed in the presence of salts as the sources of metal oxides.

Role of the PB-loop in ApcE and phycobilisome core function in cyanobacterium Synechocystis sp. PCC 6803.

The phycobilisome (PBS) is a giant highly-structured pigment-protein antenna of cyanobacteria and red algae. PBS is composed of the phycobiliproteins and several linker polypeptides. The large core-membrane linker protein (L or ApcE) influences many features and functions of PBS and consists of several domains including the chromophorylated PB-domain.