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The work of a pulsed aerosol system for fire fighting is modelled, which is designed for fire fighting at oil storages and at the spills of oil products, whose vapors were modelled by gaseous methane. The system represents a device for separate installation, which consists of a charge of solid propellant (the gas generator) and a container with fine-dispersed powder of the flame-damper substance. The methane combustion was described by a one-stage gross-reaction, the influence of the concentration of vapors of the flame-damper substance on the combustion process was taken into account by reducing the pre-exponent factor in the Arrhenius law and was described by an empirical dependence.
The computational experiment showed that the application of the pulsed aerosol system for fire fighting ensures an efficient transport of fine-dispersed aerosol particles of the flame-damping substance and its forming vapors to the combustion zone; the concentration of particles ensures the damping of the heat source.

An exergy analysis of possible regimes of energy supply to the air flow in the ramjet duct is carried out. A condition for the supply of a given heat amount to supersonic flow and a condition of the passage across the sound velocity are obtained for a duct with variable cross-sectional area. An analysis of the flow in a model ramjet duct at a pulsed-periodic energy supply is carried out. For a clear demonstration of possible schemes of heat supply in such a duct, a diagram in the temperature-exergy coordinates is proposed. A duct configuration in which the heat supply to supersonic flow is realized with regard for the limitation of the gas static temperature is proposed.

Fundamental principles of complex exergy analysis of new boiler technologies within power-generating units of thermoelectric power stations are set out. Results of analysis are stated.

Ideas of sustainable development spreading through the educational system form the framework of innovative programs. The problems of sustainable development are recognized as a constituent of professional training in many areas. It is shown with the example of D. Mendeleev Russian University of Chemical Technology that the innovative potential of sustainable development becomes the driving force of modern education. The principles underlying education for sustainable development include understanding of interdisciplinary relations and responsibility for social consequences of application of knowledge.

A review of the literature data is presented, as well as the results of the own authors' investigations in the area of development of synthesis procedures, studies of the reactivity, and search for the ways of the practical application of mono- and bis-triorganylsilyl derivatives of 1,1-dimethylhydrazine with the general formula R_{4 - n}Si(NH-NMe₂)_n where n = 1-4, and (R₃Si)₂N-NMe₂.

A set of the problems and directions of the accelerated development of the methods of synthesis of fluorine-containing β-sultones by means of the interaction of sulphur trioxide with perfluorinated olefins is considered in connection with the outlooks for their wide use to obtain fluorinated materials for a broad range of practical applications. For instance, they are used as semi-products to obtain polyfluorinated sulpho- and carboxylic acids which are involved in the manufacture of fluorinated membranes for electrochemical processes. The effect of substituents at the unsaturated bond on the formation of a four-membered cycle and the effect of Lewis acids on obtaining unsaturated fluorosulphates. The areas of application are described.

The concentrations of heavy metals (mercury, cadmium, lead, copper and zinc) in needles of Pinus sylvestris growing at the polluted and background territories of the basin of the Selenga River are investigated. The dependence between the metal content of needles and the soil is shown. Using the concentration coefficients for different pollution zones, the rows of metal accumulation in pine needles are arranged; they depict the level of the emission load on forests. In the zone of strong pollution, the highest correlations between the concentrations of lead and cadmium in needles and the morphometric parameters of trees are detected.

A quantitative structure-property relationship (QSPR) model obtained by using multiple linear stepwise regression analysis, with correlation coefficient R of 0.979 for the training set and 0.951 for the validation set, was developed to predict the glass transition temperature (T_g) values of polyacrylates. Three quantum chemical descriptors (the molecular average polarizability α, the entropy S, and the lowest unoccupied molecular orbital E_LUMO) obtained directly from polyacrylates monomer structure by density function theory (DFT) calculation, were used to produce the model. The result confirmed the role that quantum chemical descriptors play in studying QSPR of glass transition temperature for polymers.

L-Seryl-L-histidine dipeptide is of scientific interest mainly because of its various biological activities. In this paper, the lowest energy structure of the dipeptide was determined by molecular modeling, and further validated by quantum chemistry calculations and ¹H NMR spectroscopy.

The title complexes, K₂[Eu^III(dtpa)(H₂O)]·5H₂O (H₅dtpa = diethylenetriamine-N,N,N′,N″,N″-pentaacetic acid), Na₂[Tb^III(Httha)]·6H₂O (H₆ttha = triethylenetetramine-N,N,N′,N′,N″,N″-hexaacetic acid), were prepared, and their compositions and structures were determined by elemental analyses and single-crystal X-ray diffraction techniques. The crystal of K₂[Eu^III(dtpa)(H₂O)]·5H₂O belongs to triclinic crystal system and P space group. The crystal data are as follows: a = 8.3540(17) Å, b = 10.147(2) Å, c = 15.059(3) Å, α = 84.63(3)°, β = 82.02(3)°, γ = 83.96(3)°, V = 1253.1(4) ų, Z = 2, R = 0.0325 and wR = 0.1013 for 4407 observed reflections with I ≥ 2σ(I). The [Eu^III(dtpa)(H₂O)]^2- has a nine-coordinate pseudo-monocapped square antiprismatic structure, in which the nine coordinate atoms, three N and six O are from one dtpa ligand and one water molecule. The crystal of the Na₂[Tb^III(Httha)]·6H₂O belongs to monoclinic system and P2₁/c space group. The crystal data are as follows: a = 10.3976(10) Å, b = 12.7908(13) Å, c = 23.199(2) Å, β = 90.914(2)°, V = = 3084.9(5) ų, Z = 4, R = 0.0309 and wR = 0.0704 for 5429 observed reflections with I ≥ ≥ 2σ(I). In the [Tb^III(Httha)]^2-, the Tb³⁺ ion is nine-coordinated yielding a pseudo-monocapped square antiprismatic conformation, in which the ttha ligand coordinates to the central Tb³⁺ ion with four N atoms and five O atoms. There is a free non-coordinate carboxyl group (-CH₂COOH) that can be modified by some biological molecules having target function.