Matveyev Kurgan, Russia

Kurgan State University
Matveyev Kurgan, Russia

Kurgan State University is a university in Kurgan, Kurgan Oblast of Russia. It was established in 1951 in accordance with presidential decree by the merger of engineering and public teaching institutions. University prepares specialists humanitarian, socio-economic and technical specialties.The University is located in six buildings. Training is on teaching and laboratory-based area of over 52400 square meters. Wikipedia.

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Kurdyukov V.I.,Kurgan State University | Andreev A.A.,Kurgan State University
Glass and Ceramics (English translation of Steklo i Keramika) | Year: 2017

A theoretical and experimental investigation of the influence of the structural parameters of ceramic compositions in the system abrasive kernel – binder – pores on their specific fracture energy is presented. The experimental procedure is described. A graphical interpretation of the experimental results and their analysis in the form of mathematical models for calculating the fracture energy of compositions with different structure is presented. © 2017 Springer Science+Business Media New York

Gurevich Yu.G.,Kurgan State University
Powder Metallurgy and Metal Ceramics | Year: 2012

A relatively simple process for coating of porous powder steel parts with a wear-resistant porousless layer of white cast iron has been developed. The wear resistance of the coating is comparable with that of high-chromium cast iron. © 2012 Springer Science+Business Media, Inc.

Yanko V.M.,Kurgan State University
Chemical and Petroleum Engineering | Year: 2014

The antifrictional properties and wear resistance of polymeric materials when sliding on metal surface are studied. The factors contributing to enhancement of the reliability and life of plastic sliding bearings and mobile seals are determined. © 2014 Springer Science+Business Media New York.

Tverskov B.M.,Kurgan State University
Russian Engineering Research | Year: 2014

A method is proposed for damping the torsional vibrations of an automobile transmission. In this method, the rigidity of the damper is reduced to a value at which vibration is impossible. © 2014 Allerton Press, Inc.

Yanko V.M.,Kurgan State University
Chemical and Petroleum Engineering | Year: 2013

Surface hardening methods are considered and analyzed for titanium and titanium alloy components, including engineering solutions for writing inventions. © 2013 Springer Science+Business Media New York.

Yanko V.M.,Kurgan State University
Russian Engineering Research | Year: 2014

Surface treatment of titanium joint components so as to prevent jamming and increase their wear resistance is considered. Threaded joints in titanium pipes with a modified surface undergo bench tests. © 2014 Allerton Press, Inc.

Nabokov V.K.,Kurgan State University
Russian Engineering Research | Year: 2015

Analysis of the advantages and disadvantages of existing caterpillar systems permits recommendations regarding the development of new caterpillar designs with flexible hinges. © 2015, Allerton Press, Inc.

The article presents data on the effect of the combined action of food and muscular load on the level of hydrolytic enzymes in blood serum of healthy young people 18-22 years old, with various levels of adaptation to the effects of physical activity. The first group (n=8) of the examined persons were high-qualified athletes developing their speed and power qualities in anaerobic energetic regime (Greco-Roman wrestling, sambo, judo). The second group (n=8) were athletes developing endurance in aerobic energetic regime (skiers, track and field athletes - stayers, biathletes). The control group (n=8) consists of non-athletes. The content of hydrolytic enzymes: pepsinogen-1, pepsinogen-2, the activity of pancreatic α-amylase, lipase were defined by ELISA. The content and activity of ferments were defined in blood serum, taken in the morning fasting and post-prandial period in dynamics after 15, 45, 75 and 105 min after administration of the test breakfast (100 g of ground boiled beef and 200 ml of unsweetened tea) in a state of relative physiological rest and after the veloergometric exercise muscular load (at the level of 60-70% of maximal oxygen consumption) during an hour (in 7-14 days). Multidirectional changes of concentration of investigated enzymes in the postprandial period among examined were defined in the conditions of relative physiological rest and under the action of the muscular tension. For groups of athletes higher α-amylase and lipase blood activity were characteristic both in a state of physiological rest and under the action of muscular load. It was also determined that after the muscular tension there was an increase in activity of α-amylase at 75 min and lipases at 15 min relative to background indicators at non-athletes. For the athletes from the second group the increase (p<0,01) relative to background data of activity as α-amylase as lipase on an empty stomach was noted. However postprandial (15-45 min) α-amylase (p<0,05) and lipase (p<0,001) activity was significantly decreased. At relatively high rates of fasting α-amylase activity there was a decrease of its level in the postprandial period, whereas at low rates of enzyme activity on an empty stomach its increase can be occurred in the postprandial period. Lipase activity changed in groups of athletes unidirectionally, it decreased (p<0,01) in athletes of the first group at 45 min. and in athletes from the second group at 15-105 min (p<0,001). For athletes of the first group, also as well for non-athletes, significantly lower blood lipase activity was noted at rest and in the conditions of muscular tension. After a physical load lipase activity in athletes from the second group was decreased throughout the postprandial period. Blood serum concentration of pepsinogen-1 and pepsinogen-2 were also significantly higher in the groups of athletes, but only in fasting conditions. Afterreceiving the breakfast the content of these proenzymes were significantly lower in athletes comparable to the control group. Pepsinogen-2 concentration had a strong tendency to significant decrease after muscular exercise in all athletes throughout the postprandial period (at 15 and 105 min). For the athletes from the first group a decrease of pepsinogen-2 concentration to the values accepted as a norm (4-22 μg/l) was tended. The obtained data suggest that the revealed changes are associated with a sport orientation and a level of daily physical activity.

There is developed the technology of steel saturation of nonsintered carbide frames, which makes possible the complete maintenance of the sizes of component after the saturation. During the preliminary sintering of carbide frame and its following saturation by the alloyed steel, the volume shrinkage reaches 6-10%. As it was established by the preliminary experiments, during the saturation of rough (non-sintered) frame from the titanium carbide, the shrinkage volume decreased to its complete removal. However, the mechanical strength of carbide pressings during their traditional manufacturing is rather low, which complicates their transportation and organization of saturation. Various bindings were used for the purpose of increasing of strength of pressings from the titanium carbide. At the first stages of research, glycerin was chosen as the plasticizer and binding. There is substantiated, that the optimal content of glycerin is 9-13% (mas.). With such content of glycerin, pressings sustained the insignificant dynamic loadings and did not maintain their sizes. There is substantiated that the mixture of glycerin and petrolatum, which was applied as the binding of pressing of titanium carbide, provides its steel saturation. During the saturation of carbide frame with the temperature of 1465-1480 oC, the dissolution of titanium from carbide in steel is practically absent.

Rechkalov A.V.,Kurgan State University | Gorshkova N.E.,Kurgan State University
Human Physiology | Year: 2011

The biochemical parameters of blood in highly qualified athletes coached in different energy regimens after graded bicycle exercise and consuming trial carbohydrate breakfast were studied. The glucose, total protein, albumin, calcium, magnesium, potassium, chlorine, and sodium concentrations were evaluated in blood serum. Significant differences in the glucose, magnesium, sodium and chlorine concentrations in athletes and individuals not going in for sports were found. These results provide evidence for considerable changes in energy and water-salt metabolisms after training under different energy conditions. © 2011 Pleiades Publishing, Ltd.

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