Choice of parameters and stability of nonlinear vibration isolation device

Work of active vibration isolation devices with single-mass electromagnetic suspension taking into account of real characteristics of the voltage regulators is described. The analytical researches are carried out; the areas of stability of work of nonlinear vibration isolation device are defined

Detection and defect correction of operating process

The article is devoted to the current problem of enterprise competitiveness rise in hard and competitive terms of business environment. The importance of modern equipment for detection of defects and their correction is explained. Production of chipboard is used as an object of research. Short description and main results of estimation efficiency of innovative solutions of enterprises are considered

Photodegradation of methylene green in the presence of polypropylene microfiber material

Degradation of toxicants in photocatalytic reactor is studied. To an array of data on the photochemical properties of Methylene Green (MG) when exposed to UV radiation in photoreactors was obtained. Based on the analysis of the results obtained, conclusions can be drawn about the relationship between the structure of pollutants, their initial concentration, oxidizer concentration, etc., with the efficiency of utilization, and schemes for photochemical processes was constructed. The role of polypropylene microfiber materials (PMM) in the degradation of MG under UV irradiation was studied

CREATIVE PROJECT (EXPERIENCE OF TOMSK POLYTECHNIC UNIVERSITY)

The empirical basis of the article is a practical experience in implementing creative projects under the CDIO Initiative at Tomsk Polytechnic University for 2 years (4 semesters) in training bachelors majoring in «Quality Management». The implemented projects are considered, and the obtained project results are analyzed and summarized. RecomA mendations to provide pedagogical conditions to implement project activities in undergraduate training are suggested

Engineering of humic acids in biostimulants of plant growths

The generalization of literature data and the results of our scientific research over many years has led to the conclusion that physicochemical effects on natural organic materials can be key in the manifestation of their biological activity to reduce the toxicity of pollutants in the environment and improve plant growth. The bioactive properties of humic substances were studied using luminol-dependent luminescence and bioluminescence. It was shown that humic substances have the highest physiological activity for germination of wheat seeds

Choice of parameters and stability of nonlinear vibration isolation device

Work of active vibration isolation devices with single-mass electromagnetic suspension taking into account of real characteristics of the voltage regulators is described. The analytical researches are carried out; the areas of stability of work of nonlinear vibration isolation device are defined

Innovative computer technologies as an implementer of active methods of training

Introduction of computer means in high schools is dictated by innovative processes in education.One of the latest innovations is Moodle, an open source web-based platform that provides a virtual learningenvironment. The article describes the arrangement of students' learning at the technical university with thehelp of didactic materials placed on the Moodle platform. The experimental work has shown that theorganization of learning by means of the virtual learning environment had a positive effect on the level oftraining of first-year students. The survey conducted after the experiment completion allowed us to revealthe difficulties that students experienced during the work in the electronic environment, and, therefore, toplan the ways of their elimination

The Contribution of Actinobacteria to the Degradation of Chlorinated Compounds: Variations in the Activity of Key Degradation Enzymes

Bacteria make a huge contribution to the purification of the environment from toxic stable pollutants of anthropogenic and natural origin due to the diversity of their enzyme systems. For example, the ability to decompose 3-chlorobenzoate (3CBA) by the four representative genera of Actinobacteria, such as Rhodococcus, Gordonia, Microbacterium, and Arthrobacter, was studied. In most cases, the formation of 4-chlorocatechol as the only key intermediate during the decomposition of 3CBA was observed. However, Rhodococcus opacus strain 1CP was an exception, whose cells decomposed 3CBA via both 3-chloro- and 4-chlorocatechol. The enzyme 3-Chlorobenzoate 1,2-dioxygenase (3CBDO) induced during the growth of these bacteria in the presence of 3CBA differed significantly in substrate specificity from the benzoate dioxygenases induced upon growth in the presence of benzoate. The R. opacus 6a strain was found to contain genes encoding chlorocatechol 1,2-dioxygenase, chloromuconate cycloisomerase, and dienelactone hydrolase, whose nucleotide sequence was 100% consistent with the sequences of the corresponding genes encoding the enzymes of the modified 4-chlorocatechol ortho-cleavage pathway of the strain R. opacus 1CP. However, the gene encoding chloromuconolactone dehalogenase (clcF) was not found in the representatives of the actinomycete genera, including Gordonia and Arthrobacter. A linear mega-plasmid carrying 3-chlorocatechol degradation genes remained stable after maintaining the R. opacus 1CP strain on an agar-rich medium for 25 years. In general, a similar plasmid was absent in actinobacteria of other genera, as well as in closely related species of R. opacus 6a