The role of visual sources in the restoration of the historical appearance of the estate Semenovskoe-Otrada

The article addresses the role of works of art as pictorial sources in the restoration of the Russian manor. Given the fact that historical research is facing growing complex challenges, there is a need to consider sources that previously were considered as auxiliary. First of all, this applies to works of art. Pictorial sources are no less important than any other is. As a confirmation of this fact, the article reviews the works of K.K. Kolman, G.A. Bosse, V.V. Kabanov, N.A. Kiselev, Y.N. Raukh, and a painting by an unknown artist of the mid–19th century. Using these artworks as an example, the significance of works of art in the restoration of the historical appearance of a Russian manor, the Semyonovskoye-Otrada manor, is evaluated. A conclusion is drawn whether it is possible to use exclusively works of art for the organization restoration work or whether other sources are also needed

Training of Professional Pedagogues in Modern Socio-Economic Conditions of Higher Education

The article presents the actualization of the methodological base for the design and realization of educational programs for professional training of pedagogues under the socio-economic conditions of the higher education system. The study objective is to identify and describe the principles of the design and realization of educational programs for professional training of pedagogues in modern socio-economic conditions. The main methods of the study include a comparative analysis of scientific literature and modeling. Based on the interdisciplinary comparative theoretical analysis of economical concepts and education system phenomena, the principles of the design and realization of educational programs in modern socio-economic conditions are defined as the result of the study through the means of modeling the processes of professional pedagogues’ training

Fractionation of Arctic Brown Algae (<i>Fucus vesiculosus</i>) Biomass Using 1-Butyl-3-methylimidazolium-Based Ionic Liquids

Arctic brown algae are considered a promising industrial-scale source of bioactive sub-stances as polysaccharides, polyphenols, and low-molecular secondary metabolites. Conventional technologies for their processing are focused mainly on the isolation of polysaccharides and involve the use of hazardous solvents. In the present study a “green” approach to the fractionation of brown algae biomass based on the dissolution in ionic liquids (ILs) with 1-butil-3-methylimidazolium (bmim) cation with further sequential precipitation of polysaccharides and polyphenols with acetone and water, respectively, is proposed. The effects of IL cation nature, temperature, and treatment duration on the dissolution of bladderwrack (Fucus vesiculosus), yields of the fractions, and their chemical composition were studied involving FTIR and NMR spectroscopy, as well as size-exclusion chromatography and monosaccharide analysis. It was shown that the use of bmim acetate ensures almost complete dissolution of plant material after 24 h treatment at 150 °C and separate isolation of the polysaccharide mixture (alginates, cellulose, and fucoidan) and polyphenols (phlorotannins) with the yields of ~40 and ~10%, respectively. The near-quantitative extraction of polyphenolic fraction with the weight-average molecular mass of 10–20 kDa can be achieved even under mild conditions (80–100 °C). Efficient isolation of polysaccharides requires harsh conditions. Higher temperatures contribute to an increase in fucoidan content in the polysaccharide fraction