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Smutka L.,Czech University of Life Sciences | Pulkrabek J.,Czech University of Life Sciences | Vasilenok V.,ITMO | Benesova I.,Czech University of Life Sciences | Lubanda J.-P.,Czech University of Life Sciences
Listy Cukrovarnicke a Reparske | Year: 2014

After a long period (especially 1990s) of Russian sugar sector stagnation (at that time, the level of domestic production declined below 25 % of domestic consumption), a significant strengthening of production capacities has been recorded in the last ten years. It was the domestic production capacities reduction in the 1990s which led to a very significant decrease in Russian export on one hand and on the other hand a significant growth of import. That resulted in an “extreme” growth of negative trade balance, not only in relation to trade in sugar, but also in relation to trade in products containing sugar. In 1990s the Russian Federation imported almost 4.8 mil. tonnes of sugar per year in total value exceeding one billion USD. This trend had a devastating impact especially on domestic sugar industry development and Russian position in the international sugar market got worse. In period 2000–2013, Russia recorded a gradual resuscitation of Russian sugar industry. This new trend was accompanied by a reduction of imported sugar volume (the level of imports reached “only” cc 612 ths. tonnes); this was accompanied by a significant improvement of the trade negative balance value (cc 303 mil. USD). Russian dependency on sugar imports was considerably reduced. As a result of many reforms even the competitiveness of Russian sugar industry and trade strengthened. The growth of competitiveness was recorded especially in relation to those countries which signed an agreement with Russia regarding the customs union or free trade zone, i.e., mostly CIS members. © 2014, Listy Cukrovarnicke a Reparske. All rights reserved.

Zhigailov S.,Tallinn University of Technology | Musalimov V.,ITMO | Aryassov G.,Tallinn University of Technology
Proceedings of the International Conference of DAAAM Baltic "Industrial Engineering" | Year: 2014

As an experiment for the doctoral thesis the idea of creating a mechanical model for the simulation of gait with which could be to measure the movements of the various parts of a person's legs while walking could be measured is proposed. In fact the installation of sensors on the man's leg in many places cannot provide accurate measurements of displacements (accelerometer mounted on the muscle contractions because it's contractions does not give accurate results) [1]. So, one of the most logical way to provide measurements is creation of mechanical model (stand) - a prototype imitating walking human leg. Displacements of moving parts of stand can be measured by sensors - accelerometers [2]. Certainly obtained accelerations using sensors must be made in accordance with accelerations of human leg parts.

Burunkova J.,ITMO | Denisiuk I.,ITMO | Vorzobova N.,ITMO | Daroczi L.,Debrecen University | And 3 more authors.
European Polymer Journal | Year: 2013

We report the method of incorporation of preformed gold nanoparticles (AuNPs) into the acrylic polymer (AP) matrices and optical, TEM characterization of AuNP/AP bulk and film composite. It was shown that incorporation of dodecanethiol-covered AuNP can be enhanced in the presence of SiO2 nanoparticles, enabling at the same time a wider range of tailoring of composite properties for optical processing. © 2013 Elsevier Ltd. All rights reserved.

Karabutov A.A.,Moscow State University | Shipsha V.G.,ITMO | Zharinov A.N.,Moscow State University
NDT in Progress 2011 - 6th International Workshop of NDT Experts, Proceedings | Year: 2011

Isotropic pyrocarbon used in various fields of technology: as a gasket in aircraft and space engines, gaskets in pumps for pumping corrosive liquids in new designs of compressors for pumping gas and oil. In addition, it is used for the manufacture of artificial heart valves of man. Modern ultrasonic inspection reveals their appearance in size from 1 mm. We are using contact laser-ultrasonic method for detection these defects in an isotropic pyrocarbon. Acoustic pulse excited by the laser has short duration (70 ns FWHM) and as a result, high spatial resolution. In-depth resolution of the system in the isotropic pyrocarbon is ~ 100 um. Phase of the reflected signal clearly indicates the nature of inclusion: positive-anisotropic pyrocarbon, negative-soot inclusion. The presence of the inclusion of the anisotropic phase was checked by destructive method-by polishing the sample and observing it under polarized light of met allographic microscope. Photographs in polarized light shows two layers of anisotropic pyrocarbon at a distance of ~30 micron from each other. These inclusions can be seen on B scan as a single object, because distance between the layers is less than the spatial pulse length. The results of test show, that contact laser-ultrasonic evaluation can be effectively explored for isotropic pyrocarbon investigation.

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