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This paper briefly analyzes the technology behind the upward bending of the frontend of the strip leaving the reversing stand of a plate mill. It emphasizes the importance of more precise speed coordination of motors driving the horizontal rolls. The paper further presents the results of testing a variety of speed and load parameters. It concludes that the upper roll and the lower roll differ significantly in motor torque. This difference is attributable to the significant dynamic deviations in speed that are observed when the rolls nip the metal strip, and to the fact that the load distribution controller (LDC) is slow. The paper showcases the author-developed method for motor speed coordination during frontend bending. It proposes a control system featuring a switching structure. The paper further shows the structure of a model that simulates connected roll drives. Simulations prove more precise speed control during frontend bending. This finding has been confirmed by experimentation. The method has been implemented as an algorithm on Mill 5000. The paper concludes with recommendations on its adoption in plate mills.

Matching load modes of the drives of the top and bottom rolls of rolling mill stands is an important scientific and practical problem. Solving it is relevant for the drives of reversing stands of modern plate mills. The solution complexity is caused by the need for matching load balancing mode with the mode of forming a bend of the head end of the strip plate at the stand outlet. The oscillograms of the speeds and torques of the top and bottom roll drives have been analyzed for the existing drive control algorithm. The double or more difference in the drive torques in roughing passes has been confirmed. Thereat, the bottom roll drive torque reaches the limiting level, and the top roll drive switches to the generator mode. A technique for matching the modes of the upward bending and the drive load distribution systems has been proposed. A control technique has been developed, ensuring a forced matching of speeds. The diagram of an adaptive load-distributing controller is given. The oscillograms of the drive torques have been analyzed for the technique developed. Conclusions have been made on improving the accuracy and reducing the time for matching the torques. Information is given on the technical effect of implementing the developed technique on a 5000 plate mill.

In our work, chitin was isolated from the adult grain moth biomass, its properties were studied, and a nanoform was obtained. The moth chitin differs from the classic crab chitin produced on an industrial scale by a lower degree of crystallinity, hygroscopicity, and a higher content of amino groups, which makes it easier to obtain nanoforms. Chitin nanoflbrils can be used for various medical applications.

It has been shown that in order to obtain oxide coatings with desired properties, in the process of their synthesis, it is necessary to measure and control the technological parameters and properties of the coatings. The authors proposed an automated system for the synthesis and study of coating parameters by the micro-arc oxidation method. An algorithm for the selection of methods and instruments for measuring technological modes and parameters of synthesized coatings according to technical and economic indicators and a method for choosing the optimal means for measuring technological parameters of the microarc oxidation process according to technical and economic indicators based on the average gain criterion have been developed. The analyzed technical indicators include metrological characteristics of measuring instruments. The technique was implemented in the selection of optimal measuring instruments for coating parameters in the process of micro-arc oxidation, which confirmed the relevance of the development of an automated system for the synthesis of coatings with specified properties, with a relative measurement error of the parameters not exceeding ±0.5 % by micro-arc oxidation.

The new challenges in the submillimeter astronomy call for the instruments combining high sensitivity and angular resolution, wide field of view, and multiwavelength (multicolor) spectral range. New single dish mm/submm telescopes in Eurasia are in high demand as well as their inclusion in the Event Horizon Telescope (EHT) VLBI network. The astroclimate studies aimed at the selection of the appropriate Eurasian site for a new mm/submm telescope began in 2012. The ESMT concept suggests the construction of three new mm/submm radio telescopes of 15–21 m class to be built in Suffa (Aktashtau), Uzbekistan, in Russia, and in Tibet, China to cover frequency bands up to 230 GHz (Russia), up to 350 GHz (Uzbekistan) and up to 1.5 THz (China). In the ESMT concept European ALMA antennas are taken as a starting point, increased their diameter to 21m, optimized an optical layout and the truss frame, supplemented an active surface and tertiary optics, including adaptive optics. Variants of the ESMT optical layout and tertiary optics are presented, which make it possible to maintain a compact dilution cryostat with KID-array camera in a vertical position during operation of the telescope to ensure its operability. The characteristics of the image quality of ESMT with a large-format KID-array camera in a field of view up to 10′×10′ are estimated. The possibilities of applying active optics with the use of fast holography, precise laser trackers and radars and adaptive optics with a tilted tertiary mirror are considered.

New challenges in submillimeter wave astronomy require instruments with a combination of high sensitivity and angular resolution, wide field of view and multiwave (multicolor) spectral range. New large single mm/submm telescopes are in high demand, as well as their inclusion in the global Event Horizon Telescope (EHT) VLBI network. At the same time, there are no large mm/submm telescopes in Asia at all while appropriate sites exist and their appearance in Asia or Eurasia is long overdue. Kinetic inductance detectors (KID) are ideal for large-format array implementation, which will be necessary for future telescope development. Concept of multicolor subTHz KID-array MUSICAM demo camera and its instrumental testing is given. It allows us to perform some necessary steps toward the creation of the Eurasian SubMillimeter Telescopes (ESMT), which concept and scientific tasks are presented as well.

Proton-beam writing is a high-resolution lithographic technology that can be used to fabricate 3D micro- and nanostructures for various applications. In particular, the method is suitable for creating 3D matrices for cell growth and development. However, mainly polymethylmethacrylate and inorganic silicon polymers are used as resists for such lithographs. At the same time, it is interesting to use biological polymers as a substrate, which has already proven themselves well in medical and biological applications. Chitosan is a naturally occurring polymer that finds its application in various industrial and biomedical fields. Recently, it has become a promising material for biological functionalization of microelectromechanical systems, for creating laboratories on a chip. In our work, we show the possibility of using chitosan films as a positive resist for proton lithography. The proton beam writing technique allows obtaining fine linear structures on the chitosan surface, with excellent quality of walls. Creating fine micro- and nanoscale structures by proton beam writhing opens new possibilities for chitosan-based materials.

A series of nanocomposite materials based on chitosan comprising iodine and triarylmethane dyes has been developed. The materials can find their use in the fields of biomedicine and biotechnology. The composites have been characterized by physico-chemical methods; their antibacterial activity has been assessed.