The chronic inflammation of palatine tonsils is characterized as a multifactorial immunopathological process and takes one of the leading places among nasopharyngeal pathology, especially in children and persons of young age.
The aim of our research was investigating of clinical and ultrasonic features of defeat of palatine tonsils at children of teenage age with chronic tonsillitis

Мозгова, Юлія Анатоліївна

Мозговая, Юлия Анатольевна

Mozghova, Yuliia Anatoliivna

Васильєва, Олена Геннадіївна

Васильева, Елена Геннадьевна

Vasylieva, Olena Hennadiivna

The growth of a foam which is simultaneously draining and bursting is analysed mathematically using the foam drainage equation. The bursting is implemented via a novel upper boundary condition: foam films are assumed to possess a well defined tensile strength. Since capillary suction forces on films depend on the cross-sectional area of surrounding Plateau borders, this is equivalent to assuming a limiting Plateau border area at the top of the foam. The case of a gas–liquid foam being blown up into a vertical column is studied in detail, the results being of relevance to froth stability column measurements. Two regimes of behaviour are possible. The first is where the upward velocity of air relative to the column exceeds the downward gravitational velocity of liquid relative to gas at the top of the foam. Such a foam is predicted to grow indefinitely, although the growth rate at late times is markedly less than that at early times. The second regime is where the upward velocity of the air relative to the column is less than the downward gravitational velocity of liquid at the top: capillary suction always retains a role in determining the net liquid motion in such cases, and the foam grows to a finite steady height. The two respective regimes can also be considered in terms of the froth stability, with the first corresponding to stable foams, and the second to unstable ones. At a fixed air flow velocity, decreasing the foam stability and thereby the film tensile strength, increases the critical Plateau border area for film bursting, and thereby the downward gravitational velocity: this can shift a system from the first regime to the second. We focus on the second regime, and in particular on the case where the foam is nearly stable, in the sense that the final froth height is large (compared to a well defined capillary length scale inherent to the foam itself). The steady state height of the foam and the steady state profile of liquid content versus vertical position are computed. A perturbation eigenvalue analysis is used to determine the exponential rate of approach to steady state. The approach to steady state is predicted to be extremely slow in the case of nearly stable froths, for which the rate of approach eigenvalue becomes vanishingly small

Grassia, P.

Neethling, S.J.

Cervantes, C.

Lee, H.T.

Name not available

The growth, drainage and bursting of foams

Electronic Sumy State University Institutional Repository

CLINICAL AND ULTRASONIC FEATURES OF DEFEAT OF PALATINE TONSILS AT THE SICK TEENAGERS WITH CHRONIC TONSILLITIS Mozgova IU.A., Vasylyeva E.G.  Department of Pediatric of Postgraduate Education, Sumy State University, Sumy, Ukraine  The chronic inflammation of palatine tonsils is characterized as a multifactorial immunopathological process and takes one of the leading places among nasopharyngeal pathology, especially in children and persons of young age.  The aim of our research was investigating of clinical and ultrasonic features of defeat of palatine tonsils at children of teenage age with chronic tonsillitis.  Methods: we examined 32 children, patients with the compensated chronic tonsillitis, aged from 13 till 17 years. General clinical methods were used and ultrasonic research of palatine tonsils.  As a result of the conducted research it is established that children with chronic tonsillitis had complaints like periodic pains on swallowing, discomfort in a oropharynx, a purulent smell from a mouth. On examination were revealed, that all patients had local signs, characteristic for chronic tonsillitis. According to ultrasonic research at children with chronic tonsillitis it was revealed that tonsils were visualized medium echogenicity ((96,83±2,23) %), homogeneous structure, with cross sizes - 15-20 mm ((81,25±7,01) %), lacunas are deepened to 2 mm ((87,50±5,94) %), the thickening of a capsule was observed in (78,13±7,42) %, single fibrous changes - in (53,97±6,33) %, cysts were found in ((3,13±3,13) %).  Thus, the signs of defeat of palatine tonsils revealed by means of ultrasonic research at the children with chronic tonsillitis, significantly supplement visual survey of otolaryngologists that will help them directed by the diagnosis and a choice of rational tactics of treatment.    Mozgova IU.A. Indicators of immunoglobulins A, M, G in the serum of young children suffering from intestinal infection of rotavirus etiology / IU.A. Mozgova, E.G. Vasylyeva // XII International Medical Scientific Conference for Students and Young Doctors 8-11 october.Pleven, Bulgaria. - 2014. - P.151 

Clinical and ultrasonic features of defeat of palatine tonsils at the sick teenagers with chronic tonsillitis

The growth of a foam which is simultaneously draining and bursting is analysed mathematically using the foam drainage equation. The bursting is implemented via a novel upper boundary condition: foam films are assumed to possess a well defined tensile strength. Since capillary suction forces on films depend on the cross-sectional area of surrounding Plateau borders, this is equivalent to assuming a limiting Plateau border area at the top of the foam. The case of a gas-liquid foam being blown up into a vertical column is studied in detail, the results being of relevance to froth stability column measurements. Two regimes of behaviour are possible. The first is where the upward velocity of air relative to the column exceeds the downward gravitational velocity of liquid relative to gas at the top of the foam. Such a foam is predicted to grow indefinitely, although the growth rate at late times is markedly less than that at early times. The second regime is where the upward velocity of the air relative to the column is less than the downward gravitational velocity of liquid at the top: capillary suction always retains a role in determining the net liquid motion in such cases, and the foam grows to a finite steady height. The two respective regimes can also be considered in terms of the froth stability, with the first corresponding to stable foams, and the second to unstable ones. At a fixed air flow velocity, decreasing the foam stability and thereby the film tensile strength, increases the critical Plateau border area for film bursting, and thereby the downward gravitational velocity: this can shift a system from the first regime to the second. We focus on the second regime, and in particular on the case where the foam is nearly stable, in the sense that the final froth height is large (compared to a well defined capillary length scale inherent to the foam itself). The steady state height of the foam and the steady state profile of liquid content versus vertical position are computed. A perturbation eigenvalue analysis is used to determine the exponential rate of approach to steady state. The approach to steady state is predicted to be extremely slow in the case of nearly stable froths, for which the rate of approach eigenvalue becomes vanishingly small. © 2005 Elsevier B.V. All rights reserved

Neethling, S. J.

Lee, H. T.

The University of Manchester - Institutional Repository

University of Strathclyde Institutional Repository

http://dx.doi.org/10.1016/j.colsurfa.2005.08.040

Clinical and ultrasonic features of defeat of palatine tonsils at the sick teenagers with chronic tonsillitis

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Electronic Sumy State University Institutional Repository

The University of Manchester - Institutional Repository

The University of Manchester - Institutional Repository

University of Strathclyde Institutional Repository