218 research outputs found
Many closed K-magnetic geodesics on S^2
2noIn this paper we adopt an alternative, analytical approach to Arnol’d problem about the existence of closed and embedded K-magnetic geodesics in the round 2-sphere ^2, where :^2→ℝ is a smooth scalar function. In particular, we use Lyapunov-Schmidt finite-dimensional reduction coupled with a local variational formulation in order to get some existence and multiplicity results bypassing the use of symplectic geometric tools such as the celebrated Viterbo’s theorem and Bottkoll results.openopenopenMusina, Roberta; Zuddas, FabioMusina, Roberta; Zuddas, Fabi
Bubbles with constant mean curvature, and almost constant mean curvature, in the hyperbolic space
Given a constant , let be the family of round spheres of radius
in the hyperbolic space , so that any
sphere in has mean curvature . We prove a crucial nondegeneracy result
involving the manifold . As an application, we provide sufficient conditions
on a prescribed function on , which ensure the existence
of a -curve, parametrized by , of embedded
spheres in having mean curvature at each
point
Heterogeneity of filtration in the upper part of the geologic cross-section in Vostochno-Zakamsky oil region of the Republic of Tatarstan
In Tatarstan continuous oil mining has caused large scale pollution of underground water in upper part of the geological section. As a result, there is the increasing problem of quality drinking water supply in many settlements. In this connection, we examined the nature and major filtration heterogeneity Nizhnekazanskogo aquifer. This is the most productive part of the section on underground water for drinking water.Comprehensive review of a variety of data allowed us to establish five main factors: geological, structural, hypsometric, geomorphological and facial. Their combination forms an increased filtration background of rocks. First of all, results allow to choose optimal position of the new water wells and rational planning and exploration work for the underground drinking water
The role of english langauge at the Ural state medical university.
This study considers efficiency of the English language education in the Ural state medical university. The students survey showed the necessity of additional English classes to increase the level of vocational training and communication with colleagues
Weighted Sobolev spaces of radially symmetric functions
We prove dilation invariant inequalities involving radial functions,
poliharmonic operators and weights that are powers of the distance from the
origin. Then we discuss the existence of extremals and in some cases we compute
the best constants.Comment: 38 page
Integration of a specialist into the international space: linguistic training and cross cultural interaction
The article considers the possibilities of international internships for medical students and doctors. The problems of insufficient linguistic training of health care manpower for representing Russian Federation at the international level are discussed. Ways to work out these issues are suggested
Using antocyanian molecules contained in red beet as an acid-base indicator
The purpose of the study is to prove the possibility of using anthocyanin molecules as acid-base indicators.Цель исследования – доказать возможность использования молекул антоцианового ряда в качестве кислотно- основных индикаторов
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