Calculations of the centrifugal machines critical frequencies rotors are currently carried out on basis finite element method using multi-functional software as same ANSYS and other similar, that work with elements three-dimensional type, well some specialized computer programs working beam-type elements. Anyway, is used. But in this case an user needs a lot time for prepation initial data. The...

In this paper, the boundary-based estimation of pressure distribution in the cardiovascular system is investigated using two dimensional flow images. The conventional methods of non-invasive estimation of pressure distribution in the cardiovascular flow domain use the differential form of governing equations. This study evaluates the advantages of using the integral form of the equations in the...

During the complete oxidation of fatty acids, the electrons removed from fatty acids in different forms (FADH2 and NADH2) pass through the respiratory chain, driving the ATP synthesis. Generally, the ATP yield due to the complete oxidation of fatty acids is calculated by sum total the ATPs obtained due to the oxidation of FADH2 and NADH2 due to lack of any particular method. This calculation is...

Due to the complexity of the physical mechanism of lightning and mathematical formula, Parameter range and large amount of calculation, at present the mathematical model of lightning simulation is always empirical or inconsistent with the physical properties of lightning. In order to bring down the complexity, and to advance physical properties, of the traditional lightning model the paper carr...

Among the complex large quantity of sports phenomenon and sports issues, we need to discuss the causal relationship and essential rule in between. Mathematical statistics is one of the common and practical methods for causal inference. In order to better understand, select, and use mathematical statistic methods, and to avoid deviation of research result due to misuse or even abuse of statistic...