The topography of the field and flux inside and above the surfaces of ferromagnetic plates during their contact and contactless magnetization

Modeling and experimental studies of the spatial distributions of the field and flux inside and above the surface of ferromagnetic plates of different dimension types, which were locally magnetized by U-shaped electromagnets, were performed. It was established that the location of a magnetic inhomogeneity in the interpole zone of an electromagnet substantially affects the results of a local measurement of the coercive force using a demagnetization current. It is shown that the presence of a gap in the magnetic circuit impairs the magnetization of the interpole zone of an object to a higher degree than the magnetization of the near-pole zone. Recommendations on the concentration of the magnetic flux in the interpole zone via a decrease in the interpole distance of the electromagnet are given. Possible locations of internal-field probes that provide local measurements of the magnetic properties of a substance are determined. © 2013 Pleiades Publishing, Ltd

Gyppokrat - der altgriechische arzt

Ist neben 460 Jahre unserer Ära auf der Insel des Sensens, Griechenland geboren worden. Gyppokrat der Sehnen unter Perikla, behandelte der Zeitgenosse Sokrates und Platon, von der erheuchelten Verrücktheit lächelnden Philosophen Demokrita. Er ist als "der Vater der Medizin» und der Gründer der eigenen medizinischen Schule anerkannt. Diese intellektuelle Schule hat gemacht die Medizin in Altertümlichem Griechenland, sie wie die abgesonderte Disziplin, vom Zauber und der Philosophie abgetrennt, mit denen sie traditionell assoziiert war. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/2597

Organizational and pedagogical peculiarities of the "good" and "evil" concepts formation at the Student Youth.

The article emphasizes that both in the Orthodox and in the secular pedagogy the essence of the concept the "good" is generally regarded as an absolute good, i.e. the absolute values, but the evil is never absolute. It has been proved that the ability to distinguish the good and the evil is the essence of morality, which has been formed since early childhood. The organizational and pedagogical features of these concepts’ formation at the school youth were identified: out of confessionality, the use of interdisciplinary relations; study of the foundations of the Christian culture and the philosophy of the country, the world; the familiarization with the examples of the lives of the Saints; the optimal combination of the secular and the Orthodox means and methods of training; showing the Biblical knowledge as a guide how to act in everyday life.В статье рассматривается сущность понятия «добро» как абсолютное добро, т.е. абсолютные ценности, а зло никогда не бывает абсолютным. Доказано, что способность различать добро и зло составляет сущность нравственности ученика, которая формируется с раннего детства. Выявлены организационно-педагогические особенности формирования у ученической молодежи данных понятий: вне конфессиональность; использование межпредметных связей; изучение основ христианской культуры и философии страны, мира; ознакомление с примерами жития святых; оптимальное сочетание светских и православных средств и методов обучения; показ, что Библейские знания являются руководством к действию в повседневной жизни

Three-dimensional distribution of the magnetic field and the flux in locally magnetized two-layer ferromagnetic objects

Numerical simulation of the spatial distribution of the magnetic field and the flux in two-layer objects is executed. The possibility of measuring the depth of a highly coercive layer on a soft magnetic core by the magnetic field measured on the surface of the object in the interpolar space of a U-shaped electromagnet is theoretically and experimentally shown. © 2016 Author(s)

Complex application of magnetic and magnetoacoustic parameters in the structuroscopy of ferromagnetic materials

The set of magnetic parameters and amplitude-frequency spectral characteristics of magnetoacoustic emission (MAE) of a large group of metal ferromagnetic materials differing in their physical properties and size are investigated. It is shown that the change in critical fields determined by the shape of the magnetization curve and the hysteresis loop of bulk samples with an increase in the annealing temperature of cold-deformed steel 20G is 1.5-3 times greater than the change in such well-known parameters for estimating the stress-strain state, such as coercive force and residual magnetic induction. It has been established that the amplitude of magnetoacoustic emission correlates with the residual magnetic induction, which makes it possible to recommend the complex application of these testing parameters in scanning systems of structuroscopy of ferromagnetic materials. © Published under licence by IOP Publishing Ltd.Russian Foundation for Basic Research, RFBR: 18-38-00253The research was carried out within the state assignment of Minobrnauki of Russia (theme “Diagnostics” No. АААА-А18-118020690196-3), supported in part by RFBR (project No. 18-38-00253)

Group analysis and exact solutions of a class of variable coefficient nonlinear telegraph equations

A complete group classification of a class of variable coefficient (1+1)-dimensional telegraph equations $f(x)u_{tt}=(H(u)u_x)_x+K(u)u_x$, is given, by using a compatibility method and additional equivalence transformations. A number of new interesting nonlinear invariant models which have non-trivial invariance algebras are obtained. Furthermore, the possible additional equivalence transformations between equations from the class under consideration are investigated. Exact solutions of special forms of these equations are also constructed via classical Lie method and generalized conditional transformations. Local conservation laws with characteristics of order 0 of the class under consideration are classified with respect to the group of equivalence transformations.Comment: 23 page

СТАНДАРТИ НАДАННЯ МЕДИЧНОЇ ДОПОМОГИ ХВОРИМ НА ЦУКРОВИЙ ДІАБЕТ МЕДИЧНОЮ СЕСТРОЮ ЗАГАЛЬНОЇ ПРАКТИКИ

The article represents an exemplary local protocol for providing of medical care to patients with diabetes mellitus by general duty nurse, created by the authors on the basis of modern normative documents (clinical protocols of medical care to patients with diabetes mellitus type 1 and 2).У статті наведено примірний локальний протокол із надання медичної допомоги хворим на цукровий діабет медичною сестрою загальної практики, розроблений авторами на основі сучасних нормативних документів (уніфікованих клінічних протоколів із надання медичної допомоги хворим на цукровий діабет 1 та 2 типів)

Magnetic parameters of control of stress-strained state carbon steels

The complex of magnetic and magnetoacoustic properties of cold and annealed at different temperatures steels with a carbon content of 0.2% (steel 20G) and 0.7% (steel 70G) has been researched. It was found that with increasing annealing temperature of these steels up to 700 0C monotonically increasing values associated with the intensity of irreversible processes of magnetization reversal. It is shown that the coercive force of 70G steel by varying the annealing changes nonmonotonically and can not be a parameter control. Among quasistatically measured magnetic parameters to control the annealing can be used residual induction and the induction of the coercive return. The structural sensitivity of such parameters of the magnetoacoustic emission (MAE) as amplitude, base frequency, maximum field of MAE has been researched. The amplitude and the maximum field MAE correlate with remanence substances investigated steels may be used for diagnostics.Исследован комплекс магнитных и магнитоакустических свойств холоднодеформированных и отожженных при различных температурах сталей с содержанием углерода 0,2 % (сталь 20Г) и 0,7 % (сталь 70Г). Установлено, что при увеличении температуры отжига этих сталей вплоть до 700 0С монотонно растут значения параметров, связанных с интенсивностью необратимых процессов перемагничивания. Показано, что коэрцитивная сила стали 70Г при вариации отжига меняется немонотонно и не может быть параметром контроля. Из числа квазистатически измеряемых магнитных параметров для контроля отжига могут быть использованы остаточная индукция и индукция коэрцитивного возврата. Исследована структурная чувствительность таких параметров магнитоакустической эмиссии (МАЭ), как амплитуда, основная частота, поле максимума МАЭ. Показано, что амплитуда и поле максимума МАЭ коррелируют с остаточной магнитной индукцией вещества исследованных сталей и могут быть использованы при диагностике.Работа выполнена в рамках государственного задания ФАНО России по теме «Диагностика» № 01201463329

Group Analysis of Variable Coefficient Diffusion-Convection Equations. I. Enhanced Group Classification

We discuss the classical statement of group classification problem and some its extensions in the general case. After that, we carry out the complete extended group classification for a class of (1+1)-dimensional nonlinear diffusion--convection equations with coefficients depending on the space variable. At first, we construct the usual equivalence group and the extended one including transformations which are nonlocal with respect to arbitrary elements. The extended equivalence group has interesting structure since it contains a non-trivial subgroup of non-local gauge equivalence transformations. The complete group classification of the class under consideration is carried out with respect to the extended equivalence group and with respect to the set of all point transformations. Usage of extended equivalence and correct choice of gauges of arbitrary elements play the major role for simple and clear formulation of the final results. The set of admissible transformations of this class is preliminary investigated.Comment: 25 page

THE DETERMINATION OF THE DEPTH OF HARDENED LAYER ON STEEL PRODUCTS ACCORDING TO THE CHANGE OF THE FORM OF HYSTERESIS LOOP MEASURED LOCALLY

The change of the thickness of a hardened layer in the tested object by means of plates having various thickness and located on a magnetic soft core has been modeled. The oppor-tunity of the testing of a surface hardening when measuring the value of the magnetic field strength when the fixed value of the magnetic flux in dependence on the depth of hardened layer has been revealed.Настоящая работа выполнена по теме «Диагностика» № 01201463329