Impact of coherent light on interaction of fungi and bacteria cells cultivated

This article considers impact of coherent red quasi-monochromatic light on interaction of colonies of the Pseudomonas syringae bacteria and the Fusarium macroceras fungus in an in vitro culture. A helium-neon laser and a heat source with a system of light filters and aperture diaphragms were used for irradiation. Two light fluxes were obtained with energy parameters close in magnitude, but significantly different in spatio-temporal coherence. Light with a high statistical ordering stimulated growth of both colonies. Irradiation from the same spectral range and intensity, but with low spatial coherence, increased the functional activity of only small bacteria cells. As a result, there was a suppression of larger fungal cells development that were interacting with them. Therefore, it was the statistical (coherent) properties of light that affected the change in the equilibrium of microorganisms in an artificial biocenosis. This approach can be used in practice for increasing the activity of bacteria antagonists of pathogenic fungi and the non-chemical disease protection of plants

Bacteria as agents of biocontrol of phytopathogens after laser stimulation and of their metabolites’ impact on plants

The problem of increasing activity of phytopathogen antagonist bacteria under the influence of laser irradiation is considered in this paper. Studies on Bacillus subtilis and Pseudomonas fluorescens from various plant protection products have shown that use of laser irradiation leads to an increase in the number of cells in bacterial suspensions. This indicator increased to a maximum of two times at effective exposures in comparison with the non-irradiated variants. That was justification for the need to study the nature of the impact of excessive content of metabolites in the substrate synthesized by such a quantity of bacteria from biological products, which is 2 or more times higher than the number of cells in the standard solutions. With a twofold and fourfold increase in the concentration of metabolites of the studied bacteria compared to their standard content in the medium, the photosynthetic activity of cucumber microplants increased by more than 32%. This suggests that laser stimulation of bacteria – agents of biocontrol of diseases does not adversely affect the functional state of plants

Use of Simulator Equipment for the Development and Testing of Vessel Control Systems

One of the ways to reduce human influence on the control process is the development of automated and automatic control systems. Modern control systems are quite complex and require preliminary ground testing. The article considers the issues of creating Imitation Modelling Stand for such control system synthesis and testing. For this reason, a Control System Model was integrated into the local computer network of the navigation simulator NTPRO 5000. The authors of the paper developed and tested software for information exchange between the navigation simulator and the Control System Model. The authors also developed a functional module of collision avoidance with many targets for testing in a closed loop system with virtual training objects. The results showed that the developed Imitation Modelling Stand allowed developing and testing functional modules of the control systems. In comparison with the found analogues, it is easy to include in a closed simulation cycle various models of command devices, actuators, control objects, objects of training scene, weather conditions; it is universal both for solving problems of manual control and for developing and testing automatic and automated control systems; it is not highly specialised and is created at minimal costs

Use of Simulator Equipment for the Development and Testing of Vessel Control Systems

One of the ways to reduce human influence on the control process is the development of automated and automatic control systems. Modern control systems are quite complex and require preliminary ground testing. In article considered the issues of creating Imitation Modeling Stand for such control system synthesis and testing. For this, a Control System Model was integrated into the local computer network of the navigation simulator NTPRO 5000. Developed and tested software for information exchange between the navigation simulator and Control System Model. Developed a functional module of collision avoidance with many targets for testing in a closed loop system with virtual training objects. The results showed that the developed Imitation Modeling Stand allows to develop and test of functional modules of the control systems; in comparison with the found analogs also makes it easy to include in a closed simulation cycle various models of command devices, actuators, control objects, objects of training scene, weather conditions; is universal, both for solving problems of manual control and for developing and testing automatic and automated control systems is not highly specialized and is created with minimal costs

EFFICIENCY OF USING THE ADAPTED GOAT’S MILK FORMULA IN THE DIET OF HEALTHY YOUNG INFANTS: A MULTICENTER PROSPECTIVE COMPARATIVE STUDY

Background. There is no doubt that it is necessary to study the efficiency of milk formulas that are introduced into the Russian market of baby food. This applies to both new products and known brands of formulas whose composition is subject to change.Objective. Our aim was to assess the clinical efficacy of the adapted goat's milk formula in the diet of young infants.Methods. We conducted a prospective comparative study with healthy full-term  children aged 0–5 months being on a formula (main group) or breast feeding (comparison group). The tolerability of the adapted goat's milk formula, the dynamics of anthropometric indicators, changes in body composition as well as microscopic characteristics  of stool and general clinical and biochemical parameters  of peripheral blood were assessed after 1 month.Results. Good tolerability of the goat's milk formula was noted in 184 (96.8%) of 190 children in the main group. In the course of taking the product, the proportion of children with functional disorders of the gastrointestinal tract decreased significantly from 57 (30%) to 27 (14%) (p < 0.001). Physical development,  complete blood count results, the levels of ferritin, prealbumin and 25(OH)D in children of the main group and the comparison group (n = 71) were comparable and were within the mean age parameters. Qualitative analysis of the level of specific IgE to goat's milk proteins did not reveal any sensibilization in any of the children receiving the milk formula, either at the beginning of the study or after 1 month of taking the product.Conclusion. The studied adapted goat's milk formula can be used in nutrition of young infants in cases of lack or absence of mother's milk