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941 results on '"Nigmatullin R."'

323. NIMRAD: novel technique for respiratory data treatment.

Author

Nigmatullin, R., Ionescu, C., and Baleanu, D.

Abstract

This paper illustrates the efficiency and simplicity of a new technique which is determined in this paper as NIMRAD (the non-invasive methods of the reduced analysis of data) for describing information extracted from biological signals. As a specific example, we consider the respiratory data. The NIMRAD can be applied for quantitative description of data recorded for complex systems in cases where the adequate model is absent and the treatment procedure should not contain any uncontrollable error. The theoretical developments are applied to signals measured from the respiratory system by means of the forced oscillation technique based on non-invasive lung function test. In order to verify the feasibility of the proposed algorithm for developing new diagnosis tools, we apply NIMRAD on two different respiratory data sets, namely from a healthy subject and from a patient diagnosed with asthma. The results are promising and suggest that NIMRAD could be further tailored and used for specific clinical applications. [ABSTRACT FROM AUTHOR]

Published
2014
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324. Thermodynamics of Ising rare-earth magnet in the static fluctuation approximation.

Author

Khamzin, A. and Nigmatullin, R.

Subjects
*THERMODYNAMICS, *RARE earth metals, *GEOMAGNETISM, *FLUCTUATIONS (Physics), *APPROXIMATION theory, *ANISOTROPY, *PHASE transitions
Abstract

The authors obtain the closed self-consistent system of equations for calculation of the desired thermodynamic values of the Ising magnet with arbitrary spin and in presence of the single-ion anisotropy in the frame of the original static fluctuation approach (SFA). The essence of the SFA is based on accurate calculations of fluctuations of a molecular field. As an example the complete analysis of the critical behavior of the Ising magnet with spin S = 1 (Blume-Capiel model) is shown. The expressions for the phase transitions lines of the first and the second order are found. In addition, the coordinates of the tricritical point for some types of cubic lattices are found also. [ABSTRACT FROM AUTHOR]

Published
2014
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325. Propane—Butane deasphalting of tar

Author

Khairudinov, I. R., primary, Saifullin, N. R., additional, Nigmatullin, R. G., additional, Sultanov, F. M., additional, Gantsev, V. A., additional, Sazhina, T. I., additional, and Kut’in, Yu. A., additional

Published
1999
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347. Application of Fractional Moments for Comparing Random Variables with Varying Probability Distributions.

Author

Al Shami, Munther R., Mugdadi, A. R., Nigmatullin, R. R., and Osokin, S. I.

Subjects
RANDOM variables, DISTRIBUTION (Probability theory), GENERALIZATION, MEAN value theorems, FRACTIONAL calculus, BETA functions, LOGARITHMIC functions
Abstract

New methods are being presented for statistical treatment of different random variables with unknown probability distributions. These include analysis based on the probability circles, probability ellipses, generalized mean values, generalized Pearson correlation coefficient and the beta-function analysis. Unlike other conventional statistical procedures, the main distinctive feature of these new methods is that no assumptions are made about the nature of the probability distribution of the random series being evaluated. Furthermore, the suggested procedures do not introduce uncontrollable errors during their application. The effectiveness of these methods is demonstrated on simulated data with extended and reduced sample sizes having different probability distributions. [ABSTRACT FROM AUTHOR]

Published
2013

348. Thermodynamic and magnetic properties of linear spin complexes of ortho-water molecules.

Author

Khamzin, A. and Nigmatullin, R.

Subjects
*SUPRAMOLECULES, *MAGNETIC properties, *THERMODYNAMICS, *MATHEMATICAL transformations, *LINE geometry
Abstract

The article focuses on the possibility of the formation of magnetic linear chains of ortho-water molecules among supramolecular water complexes as well as their magnetic and thermodynamic properties. It cites the different scenarios on the formation of linear magnetic chains, which include the acquisition of a nonzero magnetic moment by the ortho-water molecules at the end of linear nanoassociates. It adds that the resulting spin complexes adds stability to nanoassocciate in an aqeous solution.

Published
2013
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