... The aim of the present study - to increase operation life of propellers by means of creation of hardened case of the surface and decrease the surface roughness, which to be effected without hand accurate grinding. ... For investigation of UF influence on roughness and surface strength of materials, БрА9Ж4Н4 bronze and 0Х14НДЛ stainless steel samples were taken, which are used in fabrication of propellers. ...

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• AUTHOR : Gorodischensky V
• AUTHOR : Krutov A

... 4) Percolation probability: [pic] , where L is linear size of lattice. ... The presence of obstacles in a system leads to: - increase of the critical concentration value; this effect grows with increase of the full area of obstacles and falls with increase of the linear size of ones. - increase of the critical exponent ( value; this effect increase with growth both of linear size of obstacles and of their full area. - increase of the growth rate of ...

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• http://acat02.sinp.msu.ru/plenary.html
• http://acat02.sinp.msu.ru/presentations/kryukov/acat02-020625.pdf
• http://acat02.sinp.msu.ru/presentations/ratnikova/01.pdf

... Basic statement: "Mathematics is much clever, than Mathematician" It means, that after the scientist or engineer developed new mathematical model and designed corresponding equations, the solution to these equations produces new information unpredictable for the author! ... This vibration excites the shear wave in tissue 2 sx 2 - (ct + ) s x = Fx 2 t t Studies in Fluid Dynamics of water jet are connected with two main problems: 1. Flows in contracting nozzle forming high-speed jet. ...

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• http://acoustics.phys.msu.su/teachers/gusev_files/diff2011.pdf
• http://acoustics.phys.msu.su/conf2003.htm
• http://acoustics.phys.msu.su/teachers/gusev_files/diff2012.pdf