2,154 research outputs found

    Spectral variations of AeBe Herbig stars in the Mon R1 association

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    We present the change in the Halpha emission-line profile of the spectra of some AeBe Herbig stars. In the spectrum of VY Mon, Halpha may have one of three profile types: P Cyg, P Cyg III or single line in accordance with the brightness variations of the star. HD259431 now shows a double Halpha profile with the red component stronger than the blue component, while in the earlier observations the blue peak was higher than the red peak. Finally, the last Halpha profile of LkHalpha215 is very similar to that obtained by Finkenzeller et al.Comment: 4pages, 3figure

    State of the mineral component of rat bone tissue during hypokinesia and the recovery period

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    Experiments were conducted on young growing rats. Hypokinesia lasting from 20 to 200 days caused retarded gain in weight and volume of the femur and delayed development of the cortical layer of the diaphysis. In contrast, the density of the cortical layer of the femoral diaphysis increased due to elevation of the mineral saturation of the bone tissue microstructures. Incorporation of Ca into the bone tissue in hypokinesia had a tendency to reduce. Partial normalization of the bone tissue mineral component occurred during a 20 day recovery period following hypokinesia

    Effect of six-month hypokinesia in dogs on mineral component, reconstruction and mechanical properties of bone tissue

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    Ca45 incorporation into the bones of the limbs, particularly in the area of the muscle attachment increased in dogs as a result of 6 month hypokinesia. There were no phenomena of osteoporosis in the cortical layer of the diaphyses; however, changes in the form of osteons, an increase in the number of anastomoses between the channels and the thinning of the subperiosteal layer pointed to disturbances of the bone tissue reconstruction. Mineral saturation of the bone microstructures of the experimental dogs had a tendency to rise. No changes in the mechanical properties of the long bones occurred as a result of hypokinesia in dogs

    Countering Corruption within the Framework of the Functioning of the Eurasian Economic Union

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    The present study is aimed at considering the issues of competence of the Eurasian Economic Union, defined by international treaties within the framework of the Eurasian Economic Union, on combating corruption in the preparation of acts of the bodies of the Eurasian Economic Union.Aim. To determine the competence of the bodies of the Eurasian Economic Union in the field of anticorruption in the development of acts of the bodies of the Eurasian Economic Union.Tasks. To identify the limits and scope of the competence of the Eurasian Economic Union, established by the Treaty on the Eurasian Economic Union of May 29, 2014, in the field of anti-corruption in the development of acts of the bodies of the Eurasian Economic Union, to determine the grounds for anticorruption expertise provided for by the legislation of the Russian Federation, to determine the degree of effectiveness of the Eurasian integration in the field of anti-corruption.Methods. In this paper, using the methods of logical, comparative and predictive analysis, the factors contributing to the implementation of effective policies of the member states of the Eurasian Economic Union aimed at improving the mechanism for the development of acts of the bodies of the Eurasian Economic Union in the field of combating corruption are identified.Results. The study showed that the Treaty on the Eurasian Economic Union of May 29, 2014 does not provide for the authority of the Eurasian Economic Commission to conduct anti-corruption expertise in the preparation of acts of the bodies of the Eurasian Economic Union. At the same time, the Eurasian Economic Union has powerful legal and organizational tools that allow it to adopt regulatory legal acts that are sufficiently deeply prepared, analyzed and have passed legal procedures. The Eurasian anti-corruption platform proposed for formation will allow applying international experience, and, in addition, protecting the national interests of the Eurasian countries, taking into account the peculiarities of national legal systems.Conclusion. It is advisable to consider the development and adoption of a unified anti-corruption strategy of the Eurasian Economic Union, which would be based on the participation of the EAEU member states and take into account national interests and the specifics of the legal systems of the participating states, including the specifics of legislative regulation in the anti-corruption sphere

    An anomalous subauroral red arc on 4 August, 1972: comparison of ISIS-2 satellite data with numerical calculations

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    International audienceThis study compares the Isis II satellite measurements of the electron density and temperature, the integral airglow intensity and volume emission rate at 630 nm in the SAR arc region, observed at dusk on 4 August, 1972, in the Southern Hemisphere, during the main phase of the geomagnetic storm. The model results were obtained using the time dependent one-dimensional mathematical model of the Earth's ionosphere and plasmasphere (the IZMIRAN model). The major enhancement to the IZMIRAN model developed in this study to explain the two component 630 nm emission observed is the analytical yield spectrum approach to calculate the fluxes of precipitating electrons and the additional production rates of N+2, O+2, O+(4S), O+(2D), O?(2P), and O+(2P) ions, and O(1D) in the SAR arc regions in the Northern and Southern Hemispheres. In order to bring the measured and modelled electron temperatures into agreement, the additional heating electron rate of 1.05 eV cm?3 s?1 was added in the energy balance equation of electrons at altitudes above 5000 km during the main phase of the geomagnetic storm. This additional heating electron rate determines the thermally excited 630 nm emission observed. The IZMIRAN model calculates a 630 nm integral intensity above 350 km of 4.1 kR and a total 630 nm integral intensity of 8.1 kR, values which are slightly lower compared to the observed 4.7 kR and 10.6 kR. We conclude that the 630 nm emission observed can be explained considering both the soft energy electron excited component and the thermally excited component. It is found that the inclusion of N2(v > 0) and O2(v > 0) in the calculations of the O+(4S) loss rate improves the agreement between the calculated Ne and the data on 4 August, 1972. The N2(v > 0) and O2(v > 0) effects are enough to explain the electron density depression in the SAR arc F-region and above F2 peak altitude. Our calculations show that the increase in the O++N2 rate factor due to the vibrationally excited nitrogen produces the 5?19% reductions in the calculated quiet daytime peak density and the 16?24% decrease in NmF2 in the SAR arc region. The increase in the O++N2 loss rate due to vibrationally excited O2 produces the 7?26% decrease in the calculated quiet daytime peak density and the 12?26% decrease in NmF2 in the SAR arc region. We evaluated the role of the electron cooling rates by low-lying electronic excitation of O2(a1?g) and O2(b1?g+), and rotational excitation of O2, and found that the effect of these cooling rates on Te can be considered negligible during the quiet and geomagnetic storm period 3-4 August, 1972. The energy exchange between electron and ion gases, the cooling rate in collisions of O(3P) with thermal electrons with excitation of O(1D), and the electron cooling rates by vibrational excitation of O2 and N2 are the largest cooling rates above 200 km in the SAR arc region on 4 August, 1972. The enhanced IZMIRAN model calculates also number densities of N2(B3∏g+),N2(C3∏u), and N2(A3?u+) at several vibrational levels, O(1S), and the volume emission rate and integral intensity at 557.7 nm in the region between 120 and 1000 km. We found from the model that the integral intensity at 557.7 nm is much less than the integral intensity at 630 nm

    Correctness investigation of a boundary value problem for a parabolic equation with nonlocal space operator with respect to the solution gradient

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    © Published under licence by IOP Publishing Ltd.We consider the parabolic equation whose space operator is product of nonlinear bounded function which depends on nonlocal characteristic with respect to a solution gradient and strongly monotone, potential operator. The existence and uniqueness of the solution in the class of the vector-valued functions with values in Sobolev space are proved

    On unique solvability of one nonlinear nonlocal with respect to the solution gradient nonstationary problem

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    © 2017, Allerton Press, Inc.We consider a parabolic equation whose space operator is a product of a nonlinear bounded function which depends on a nonlocal characteristic with respect to a solution gradient and a strongly monotone potential operator. We prove the existence and uniqueness of the solution in the class of the vector-valued functions with values in the Sobolev space
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