The relevance of solving the technological problem of guaranteed inactivation of microflora by heating in liquid media and the preservation of their useful components, in particular, in wine materials, is substantiated. Traditional heat treatment with heating up to 70...75 °C leads to a deterioration in the properties of the medium due to the thermal decomposition of its useful components. Newer is the technology of heating by the energy of the microwave field in the working chamber. But its significant drawback is the formation of standing waves in the metal chamber, causing local zones of overheating in places of maxima and underheating in places of wave minima. The consequence of this is the deterioration of the chemical composition of products and unsatisfactory inactivation of microflora. The elimination of these disadvantages of microwave processing of media is proposed to be carried out in a non-resonant chamber developed by the authors. Selective heating in the new chamber is produced by the energy of a uniform microwave field. At the same time, there are no local overheating and underheating of products. The technical implementation of a non-resonant type chamber involves the concentration of field energy in the volume of production, the conversion of the ballast field energy into thermal energy and its utilization. The work includes theoretical substantiation and experimental confirmation of the advantages of the new technology compared to the traditional one. Selective heating of products in a non-resonant working chamber entails the possibility of reducing the temperature required for guaranteed inactivation of microflora by 25...30 °C. This helps to preserve the components of the product due to the absence of overheating and reduce energy costs. In addition, it provides: exclusion of harmful radiation from the working chamber; prevention of self-overheating of the generator and exclusion of the dependence of the energy efficiency of the chamber on the level of its loading with products.
The article substantiates the dependence of the effectiveness of ensuring the survivability of weapons and military equipment on the levels of intensity of countermeasures against various factors, which are characterized by the capabilities of technical means of countermeasures against the enemy's intelligence and firepower and the capabilities of his forces and means. It is the presence and timely use of opportunities and resources that will contribute to the preservation of the functions of the weapon and its restoration in case of damage. These factors in a generalized form include the counteracting effects of various modern and promising means: on the one hand, reconnaissance and enemy fire; on the other - masking of military equipment in position, movement on the march and preparation for the functioning of weapons and equipment, first of all, through the creation and wide practical application of broadband radio absorbing materials with the necessary properties of absorbing the energy of the electromagnetic field to reduce their visibility. The requirements and possibilities of effective protection of weapons and military equipment using broadband composite polymer ferrite materials that absorb the energy of waves in the microwave and infrared wave ranges of technical intelligence radar and thermal imaging devices are substantiated. It was determined: the dependence of the index of preservation of weapons functions, in the case of the use of radar masking means, on the range of their detection by technical means of intelligence; dependence of the parameters of the forecast trend of changes over time of the indicator of the recovery of weapons samples, in case of their damage by the enemy, and the confidence intervals of the trend on the prospective time interval of their combat use. A method of determining the optimal parameters of the trend of the process of changes over time of the indicator of operational readiness of weapons and military equipment in the event of their failure at a critical time interval of their operation is also proposed, which allows to determine the predictive value of the indicator of readiness for a given time of its application and to determine when the level of this indicator readiness of the weapon sample becomes unsatisfactory. Keywords: weapons and military equipment; technical means of intelligence; evaluation of the results of the use of radio absorbing materials; predictive assessments of survivability and readiness indicators; indicator of preservation of weapons functions, indicator of restoration of a sample of weapons.
The article proposes a graph-analytical method of comparing four arbitrary alternative samples of composite radio-absorbing ferrite coating (CRFС) on sixteen time indicators of their quality, reflecting different aspects of consumer utility of such samples. The main (integrated) quality indicators of composite radio-absorbing ferrite coatings are determined such as: efficiency (level of usefulness in practical application); operational properties; manufacturability of production and application; mechanical strength. The multi-criteria choice task is reduced to single-criteria. Then the implementation of direct comparison of samples CRFС. Specific examples of application of the method of comparing a variant of the composite radio-absorbing ferrite coating OD-RAM of own development, with three other existing in practice radio-absorbing coatings are given. The application of generalized quality indicators of manufactured composites, which are determined by graphs of multiple factors, is proposed. This allows you to find out the problem factors. It is proved that the developed composite radio-absorbing ferrite coatings OD-RAM have a generalized quality index that exceeds the known foreign samples by (30 - 40)%. Further development of the methodology is proposed, which can be implemented for comparative evaluation of options for protection of armaments and military equipment, for comparison of the same type of protective samples of CRFС, in order to select an acceptable set of alternatives. The article contains new data on the practical application of multifactor comparison of manufactured composites on some new indicators of the quality of the composite being developed, according to its electrophysical and electromagnetic parameters. Keywords: radio-absorbing ferrite materials, comparison of coating options, basic quality indicators of composite radio-absorbing coatings, comparative evaluations of options for protection of armaments and military equipment, comparison of the same type of samples.
There is a tendency of intensive development of a new scientific area aimed at optimizing the processes of comprehensive ensuring the life of society and industrial processes of countries, specifically logistics, and its more important aspect, military logistics. This paper considers typical contradictions between the need and opportunities for additional development of the theory of processes involving this system. On the one hand, the military has important, dynamic, multifaceted processes for the comprehensive provision of their combat operations to analyze, which requires significant intensification of the development of methods and models for quantitative analysis of the effectiveness of the functioning of military logistics systems. On the other hand, there is now limited availability of theoretical developments and the practical application of the necessary, convenient, effective mathematical tools aimed at computerization of solving the problems of providing military scientific and technical problems in real time. Matrix technology for forecasting the dynamics of functioning of closed systems of military logistics of various military purposes is proposed. Matrix calculus makes it possible to obtain intermediate and ultimate results in a compact form and carry out complex and cumbersome calculations using effective algorithms. A method to precisely solve the system of linear differential equations describing processes of arbitrary type has been proposed. The method is based on the use of the operational calculus by Laplace. The possibilities of the method and procedures of forecasting are illustrated by solving practical military tasks that arise during the functioning of military logistics systems of varying complexity. These tasks differ in configuration, different numbers of possible states, and state transitions
The methodical approach to determining the level of environmental friendliness to the development of machinebuilding enterprises is proposed, which takes into account the distribution of the environment to the general and innovation-investment. The expediency of using multivariate factor analysis for the partial system substantiation and generalizing indicators of profitability is proved. The results of the study are illustrated by the example of the machine-building enterprises in Kharkiv industrial region.
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