Informational and analytical support of social and labor aspects of an urban settlement

Purpose: The aim of this article is to identify and assess the key problems of the city of Rostov-on-Don in social and labor aspects in order to determine the competitive position of the city relative to the million-plus cities regarding its advantages and key trends. Structure/Methodology/Approach: To realize the goals of strategic planning, it seems appropriate: first, to obtain an analytical assessment of the state of the social and labor sphere of the city of Rostov-on-Don; second, to obtain a comparative assessment of the state relative to the cities of one million Russian citizens; third, to formulate the key problems that have arisen in this field and, fourth, to formulate the competitive position of the city of Rostov-on-Don. Results: To arrange strategic directions for the development of the city of Rostov-on-Don, authors determined the competitive position of the city in the social and labor sphere in the form of advantages, key problems and key trends. Practical implications: The results could be implemented at the municipality level in the formation of the spatial policy of urban development and improving the quality of life of the population. Originality/Value: The main contribution of this study is to implement a system approach to the process of improving and developing information and analytical support for the management of municipal territories.peer-reviewe

Dichlorido[2-(3,5-dimethyl-1H-pyrazol-1-yl-ĸN²)ethanamine-ĸN]zinc(II)

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Dichlorido[2-(3,5-dimethyl-1H-pyrazol-1-yl-κN 2)ethanamine-κN]zinc(II)

The amine title complex, [ZnCl2(C7H13N3)], resulted from imine hydrolysis in a Schiff base compound. The Zn metal atom has a distorted tetra­hedral geometry with the most significant deviation identified in the magnitude of the N—Zn—N angle. This deviation stems from the participation of the Zn and N atoms in a six-membered metallocyclic ring. The latter is in an approximate screw-boat conformation. Two strong N—H⋯Cl hydrogen bonds link the mol­ecules into ribbons propagating along the b-axis direction. The ribbons contain two second-order hydrogen-bonded motifs: a chain and a ring. The chain described by the graph set notation C 2 2(6) is formed by one hydrogen bond going in the forward direction (donor to acceptor) and the other in the backward direction (acceptor to donor). In the ring motif R 2 2(8), both hydrogen bonds propagate in the forward direction

Nucleophilicity of Neutral versus Cationic Magnesium Silyl Compounds

Charge and ancillary ligands affect the reactivity of monomeric tris(trimethylsilyl)silyl magnesium compounds. Diamine-coordinated (tmeda)Mg{Si(SiMe3)3}Me (tmeda = tetramethylethylenediamine; 2-tmeda) and (dpe)Mg{Si(SiMe3)3}Me (dpe =1,2-N,N-dipyrrolidenylethane; 2-dpe) are synthesized by salt elimination reactions of L2MgMeBr and KSi(SiMe3)3. Compounds 2-tmeda or 2-dpe react with MeI or MeOTf to give MeSi(SiMe3)3 as the product of Si–C bond formation. In contrast, 2-tmeda and 2-dpe undergo exclusively reaction at the magnesium methyl group with electrophiles such as Me3SiI, B(C6F5)3, HB(C6F5)2, and [Ph3C][B(C6F5)4]. These reactions provide a series of neutral, zwitterionic, and cationic magnesium silyl compounds, and from this series we have found that silyl group transfer is less effective with cationic magnesium compounds than neutral complexes

Experimental investigation of laminar forced convection of nanofluid in heat exchange equipment

The laminar forced convection in a recuperative heat exchanger operating with nanofluids with MgO nanoparticles was investigated experimentally. In the experiments, nanoparticle concentration varied in the range from 2.5 to 12 wt. %. The nanoparticle size equalled 50 nm. The viscosity and thermal conductivity coefficients of the nanosuspensions were experimentally determined. The dependence of the average heat transfer coefficient and pressure drop on the Reynolds number for nanofluids was obtained

Experimental Investigation of Magnetic Particle Transport in a Circular Minichannel in a Constant Magnetic Field

Experimental investigation of the deposition of nanoparticles in a circular channel in a constant magnetic field has been carried out. The dynamics of growth of nanoparticles deposits on the channel walls depending on the Reynolds number and magnetic field strength has been studied in the experiments. The influence of magnetic field on pressure drop at different Reynolds numbers has been investigated. Characteristic profiles of the zones of nanoparticles depositions have been obtained for the first time; the sizes of the deposition areas and the rates of their formation depending on the Reynolds numbers, magnetic field strength and time have been determined