OPTIMIZATION OF THE SELECTION OF THE METHOD OF SEA WATER DESALINATION FOR THE REGION

Criteria for the choice of a way of desalting of sea water in the Crimean region - «study and reliability», «geographical», «industrial application», «economic», «an electric power expense», «ecological safety» and others are offered. Based on these criteria we selected the most optimal method of desalination of sea water for the Crimean region

A clinical case of using the concept of monitoring in the treatment of a gunshot defect of the soft tissues of the knee joint

Rapid rehabilitation and restoration of the function of damaged anatomical areas in the military is the main goal of military medicine. In the case of gunshot wounds of the knee joint with defects of soft tissues, one of the optional methods of reconstructive and plastic "closure" is the usage of a propeller flap. The clinical case represents a mine-explosive wound of the lower extremities with a defect of the soft tissues of the lateral aspect of the right knee joint in a serviceman of the Ukrainian Armed Forces as a result of artillery shelling in the east of Ukraine in November 2022. There was an isolated shrapnel tangential non-penetrating wound on the lateral aspect of the right knee joint with a soft tissue defect measuring 7.2x3.2-1.0 cm. The aim of the work was to study the thermographic and sonographic features of soft tissue perfusion after gunshot injuries of the lower extremities and on the basis of the temperature dynamics data from the wound surface in combination with the sonographic examination of the vessels to determine the rationality and relevance in the reconstruction of defects of the lower extremities by propeller tactics. Reconstruction with flap with a perforating vessel as the "key" of LSGA (lateral superior genicular artery) and a dynamic multimodal concept (DMT) with the use of audio doppler in the pre-, intra- and postoperative period) with closure of the defect due to a rotary perforating flap with supplying was carried out. During the entire period of treatment, of the injured the temperature background from the surface of the flap was followed up using FLIR C2, and sonographic changes in blood flow were monitored in the projection of the LSGA location. We came to the conclusion that applying the technique of flaps on perforating vessels, several goals are tactically achieved: restoration of the completeness and function of the damaged area, reduction of complications in the recipient and donor areas. Thus, the propeller flap can be classified as a primary option for "replacemen t" of tissues among the restorative tactics of the damaged area of the lower extremities caused by a gunshot origin

Electric current circuits in astrophysics

Cosmic magnetic structures have in common that they are anchored in a dynamo, that an external driver converts kinetic energy into internal magnetic energy, that this magnetic energy is transported as Poynting fl ux across the magnetically dominated structure, and that the magnetic energy is released in the form of particle acceleration, heating, bulk motion, MHD waves, and radiation. The investigation of the electric current system is particularly illuminating as to the course of events and the physics involved. We demonstrate this for the radio pulsar wind, the solar flare, and terrestrial magnetic storms

Nonlinear model of ice surface softening during friction

The ice surface softening during friction is shown as a result of spontaneous appearance of shear strain caused by external supercritical heating. This transformation is described by the Kelvin-Voigt equation for viscoelastic medium, by the relaxation equations of Landau-Khalatnikov-type and for heat conductivity. The study reveals that the above-named equations formally coincide with the synergetic Lorenz system, where the order parameter is reduced to shear strain, stress acts as the conjugate field, and temperature plays the role of a control parameter. Using the adiabatic approximation, the stationary values of these quantities are derived. The examination of dependence of the relaxed shear modulus on strain explains the ice surface softening according to the first-order transition mechanism. The critical heating rate is proportional to the relaxed value of the ice shear modulus and inversely proportional to its typical value

The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions

The 1 H NMR spectral technique has been applied to the study of samples of ZSM-5-type zeolites. These samples were synthesized using the template procedure and possessed various aluminium concentrations in their crystal lattice. The characteristics of the adsorbed water layers and the values of the free surface energy of the adsorbents were determined. It was established that, for aqueous suspensions of zeolites, the highest concentration of water in the pores was characteristic of the sample containing the lowest amount of aluminium. It was suggested that the amount of water in the pores is determined not so much by the concentration of primary adsorption sites as by the conditions under which the development of water clusters occurs as well as by the competing sorption of water and ambient air

A Study of the Brönsted Site Acidity of Crystalline and Amorphous Aluminosilicates: 1. Desorption of Ammonia, Dehydration of 2-Propanol and Cracking of Cumene

The acidity of the H-form aluminosilicates, which include ZSM-5, mordenite, Y-faujasite, Al-containing aerosils and silica gels, and the layering of aluminosilicate compounds on an aerosil surface was measured by temperature-programmed mass spectrometry desorption (TPD) of NH 3 . It was found that the desorption energies of NH 3 decrease in the order: H-M > H-ZSM-5 > Al-aerosils> H-Y > CVD Al-silicates> Al-silica gels. The catalytic activities of the studied samples in 2-propanol dehydration and cumene cracking have been shown to decrease in the same order

ENVIRONMENTAL CONSIDERATIONS AND MANAGEMENT EFFICIENCY OF INNOVATIVE DEVELOPMENT OF THE INDUSTRIAL PETROCHEMICAL REGION CASE STUDY: THE REPUBLIC OF TATARSTAN

© 2020. All Rights Reserved. Since the high potential of petrochemical industry in the creation of environmental impact, environment impact assessment of the development of petrochemical industry is of significant importance. This article considers regional management as the regulation of the behavior of a managed facility (state and non-state) by regional bodies, organizations, officials for the purposes determined by the state and the region. The direction of the facility is carried out by applying a variety of means, such as economic, environmental, administrative, ideological, legal and non-legal. Regional management is studying the formation of objective prerequisites for the economic development of the region, the management of the production structure, social sphere, ensuring living conditions, the resettlement and placement of the economy, the formation of a mechanism for the functioning and management of the economy, social sphere and ecology as well as environmental impact assessment of petrochemical industries. The subject of study, in addition to elements of the internal structure of the region’s governance, should be the links of this region with other regions of the country and states. Such relations are of the greatest importance for the region’s production development, which is caused by the need to exchange raw materials and technologies, equipment and components, products at various stages of value added increment. In the petrochemical industry, it is necessary to take into account high capital costs, air pollution, the uncertainties associated with its strong monopolization, as well as the high potential for increasing the oil recovery ratio and the depth of its chemical processing

Synthesis and Adsorptive Constitutive Properties of MMS/MFI Materials Prepared on the Basis of Al-Aerosil

A method for the one-stage bitemplate synthesis of mesoporous zeolite-containing materials based on Al-aerosil (Al-MZ) is proposed. The prepared materials were characterized by IR spectroscopy (FT-IR), X-ray diffraction (XRD) and nitrogen adsorption methods