127 research outputs found

    Efficiency of Developing Renewable Energy Market in Russia

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    The goal of this study is to systematize and provide a quantitative and qualitative assessment of potential positive economic and non-economic effects of the implementation of a new mechanism for supporting renewable energy in Russia. It should result in achieving the national medium-term objective to increase the share of renewable energy in the wholesale electricity and capacity market to 2.5 % by 2024. The introduction examines the mechanism for supporting the generators of renewable energy by capacity charge in the wholesale electricity and capacity market. It is assumed that the main positive effects from implementing this mechanism will be the replacement of hydrocarbon fuels burned for generating the electricity in traditional coal or gas power plants; improvement in the trade balance; multiplier effects from the development of RES in related industrial sectors, new value added and jobs in the sectors producing the generating and auxiliary equipment for generators; reduction of carbon dioxide emissions; decrease in average prices in the wholesale electricity market; reduction of expenditure on environmental activities and measures to protect the health in the territories with traditional power plants; additional scal charges. As a result, the quantification of these effects amounts to 47.77 billion rubles in 2024. The authors rely on the experience of foreign countries, expert estimates, forecasts by the Russian Ministry of Energy and the Ministry of Economic Development, research by the Russian Energy Agency, International Energy Agency, International Renewable Energy Agency, Community for Renewable Energy Policy in the 21st Century (REN21), statistics of Russian Federal State Statistics Service.The article has been supported by the Russian Foundation for Basic Research as part of the project 14–06–00075 “National Economic and Environmental Security: Threats, Effects, and Scenario for Interaction of Economy and Environment.

    Connected components of spaces of Morse functions with fixed critical points

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    Let MM be a smooth closed orientable surface and F=Fp,q,rF=F_{p,q,r} be the space of Morse functions on MM having exactly pp critical points of local minima, q1q\ge1 saddle critical points, and rr critical points of local maxima, moreover all the points are fixed. Let FfF_f be the connected component of a function fFf\in F in FF. By means of the winding number introduced by Reinhart (1960), a surjection π0(F)Zp+r1\pi_0(F)\to{\mathbb Z}^{p+r-1} is constructed. In particular, π0(F)=|\pi_0(F)|=\infty, and the Dehn twist about the boundary of any disk containing exactly two critical points, exactly one of which is a saddle point, does not preserve FfF_f. Let D\mathscr D be the group of orientation preserving diffeomorphisms of MM leaving fixed the critical points, D0{\mathscr D}^0 be the connected component of idM{\rm id}_M in D\mathscr D, and DfD{\mathscr D}_f\subset{\mathscr D} the set of diffeomorphisms preserving FfF_f. Let Hf{\mathscr H}_f be the subgroup of Df{\mathscr D}_f generated by D0{\mathscr D}^0 and all diffeomorphisms hDh\in{\mathscr D} which preserve some functions f1Fff_1\in F_f, and let Hfabs{\mathscr H}_f^{\rm abs} be its subgroup generated D0{\mathscr D}^0 and the Dehn twists about the components of level curves of functions f1Fff_1\in F_f. We prove that HfabsDf{\mathscr H}_f^{\rm abs}\subsetneq{\mathscr D}_f if q2q\ge2, and construct an epimorphism Df/HfabsZ2q1{\mathscr D}_f/{\mathscr H}_f^{\rm abs}\to{\mathbb Z}_2^{q-1}, by means of the winding number. A finite polyhedral complex K=Kp,q,rK=K_{p,q,r} associated to the space FF is defined. An epimorphism μ:π1(K)Df/Hf\mu:\pi_1(K)\to{\mathscr D}_f/{\mathscr H}_f and finite generating sets for the groups Df/D0{\mathscr D}_f/{\mathscr D}^0 and Df/Hf{\mathscr D}_f/{\mathscr H}_f in terms of the 2-skeleton of the complex KK are constructed.Comment: 12 pages with 2 figures, in Russian, to be published in Vestnik Moskov. Univ., a typo in theorem 1 is correcte

    Results of analyzing the passport database ‘Spring bread wheat landraces in the VIR collection’

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    Background. Recently, an increased interest in crop landraces has been observed among scientists working with plant genetic resources (PGR). Institutes have been organizing collecting missions to explore old varieties still cultivated locally. Attention paid to landraces is also associated with the introduction of GIS technologies into PGR studies. The N. I. Vavilov All-Russian Institute of Plant Genetic Resources (VIR) holds a unique collection of spring bread wheat landraces. One of the Institute’s top priorities is to develop and maintain a passport database, using a set of fields specifically fit for landraces.Analysis of the passport database. The passport database ‘Spring Bread Wheat Landraces in the VIR Collection’ is analyzed here. The database contains information on 5,925 accessions and has 36 fields. Statistical data are presented for the main fields: origin, collection site, botanical variety, year of registration in the collection, donor institute or expedition, and collector’s name

    Genetic structure analysis of leaf rust resistant triticale accessions from the VIR collection using gliadin patterns

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    The gliadin banding patterns of important accessions from the collection of the N. I. Vavilov All‑Russian Institute of Plant Genetic Resources (VIR) registered in the form of “protein formulas” provide reliable information for the preparation of a “protein passport” for each accession and is convenient for storage and computer processing. It helps to control originality and integrity of accessions during regeneration and their use in breeding. The study involved 17 triticale accessions resistant to leaf rust. The analysis was carried out on single grains of the original accession (a sample of 13–26 kernels) according to the standard protocol adopted by VIR and approved by the International Seed Testing Association (ISTA). The gliadin electrophoretic banding patterns of triticale accessions were registered in the form of “protein formulas”; polymorphism of each accession and genetic diversity within the collection were estimated, and genetic structure of accessions was identified based on the marker protein components. A large variety of the revealed genotypes opens a possibility to identify accessions that combine resistance with other useful traits. Stable and polymorphic accessions including from 2 to 7 biotypes were found. The discovery of interbiotype hybrids and recombinant genotypes in the composition of some polymorphic accessions indicates the instability of their genetic structure and the ongoing formation process. This is due to the heterogeneity of the original parental forms, the tendency to cross‑pollination and insufficiently thorough selection. The data on the triticale genotypic structure can be used in introgressive breeding to control the transfer of rye genetic material to wheat varieties in order to increase their immunity and resistance to adverse factors

    Topology of the spaces of Morse functions on surfaces

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    Let MM be a smooth closed orientable surface, and let FF be the space of Morse functions on MM such that at least χ(M)+1\chi(M)+1 critical points of each function of FF are labeled by different labels (enumerated). Endow the space FF with CC^\infty-topology. We prove the homotopy equivalence FR×M~F\sim R\times{\widetilde{\cal M}} where RR is one of the manifolds RP3{\mathbb R}P^3, S1×S1S^1\times S^1 and the point in dependence on the sign of χ(M)\chi(M), and M~{\widetilde{\cal M}} is the universal moduli space of framed Morse functions, which is a smooth stratified manifold. Morse inequalities for the Betti numbers of the space FF are obtained.Comment: 15 pages, in Russia

    Method for non-invasive assessment of the structure of a heart valve bioprosthesis

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    Background. The study of explanted heart valve bioprostheses is a valuable source of information about the destructive processes in their components that develop as a result of prolonged contact with the recipient’s body. An analysis of the morphology, staging and degree of involvement of various valve prosthesis materials in the prevalence of pathological processes – calcification, mechanical damage, growth of the connective tissue capsule, is the basis for developing potential methods for increasing the service life of these products and reducing the risk of re-interventions. The aim of the study was to evaluate the potential of computed microtomography to analyze the internal structure of a biological prosthetic heart valve explanted due to dysfunction. Material and methods. In this work, we investigated the prevalence of pathological mineralization of the PeriCor bioprosthesis, explanted as a result of the developed dysfunction of the leaflet apparatus with a clinical picture of grade 2B prosthetic insufficiency. The material was described macroscopically, after which it was subjected to high-resolution computed microtomography. In the structure of the sample, X-ray dense areas of pathological mineralization were identified and described, and the volume of the material involved in calcification was assessed. Results. It was shown that the main pathological changes that led to prosthetic dysfunction were degenerative changes in the biomaterial with signs of calcification, thickening and rupture of the leaflets. It was quantitatively determined that the areas of radiologically dense inclusions (calcifications) occupy 11.1 % of the volume of the material. It has been established that the described areas are associated with the sheathing of the frame and with the elements of the suture material used in the production of this bioprosthesis. Conclusion. The method of non-destructive analysis of the internal structure of altered materials of a biological prosthesis studied in this work has demonstrated the possibility of а qualitative and quantitative assessment of areas of pathological mineralization, their distribution and connection with other processes leading to the development of prosthetic dysfunction. The method makes it possible to visualize macro- and microsites of calcification and can become a valuable tool to complement existing approaches to the study of explanted bioprostheses

    Assessment of the role of some candidate genes in the formation of great obstetrical syndromes

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    The frequency of occurrence of genetic polymorphisms of the Folate cycle genes, plasma hemostasis, and “endothelial dysfunction” in patients with complicated and uncomplicated pregnancy and anamnesis was assessed. Polymorphic variants of the F13 gene are more common in patients with normal pregnancy, the polymorphic homozygous variant of the CYP11b2 gene is more common in pathological pregnancies, and there are no significant differences in the other PolymorphismsПроводилась оценка частоты встречаемости генетических полиморфизмов генов фолатного цикла, плазменного звена гемостаза и“дисфункции эндотелия” у пациенток с осложненным и не осложненным течением беременности в анамнезе. Полиморфные варианты гена F13 чаще встречаются у пациенток с нормальным течением беременности, полиморфный гомозиготный вариант гена CYP11b2 чаще встречается при патологической беременности, по остальным полиморфизмам достоверных различий не получено

    Assessment of the role of some candidate genes in the formation of great obstetrical syndromes

    Get PDF
    The frequency of occurrence of genetic polymorphisms of the Folate cycle genes, plasma hemostasis, and “endothelial dysfunction” in patients with complicated and uncomplicated pregnancy and anamnesis was assessed. Polymorphic variants of the F13 gene are more common in patients with normal pregnancy, the polymorphic homozygous variant of the CYP11b2 gene is more common in pathological pregnancies, and there are no significant differences in the other PolymorphismsПроводилась оценка частоты встречаемости генетических полиморфизмов генов фолатного цикла, плазменного звена гемостаза и“дисфункции эндотелия” у пациенток с осложненным и не осложненным течением беременности в анамнезе. Полиморфные варианты гена F13 чаще встречаются у пациенток с нормальным течением беременности, полиморфный гомозиготный вариант гена CYP11b2 чаще встречается при патологической беременности, по остальным полиморфизмам достоверных различий не получено

    LYMPHOCYTE PHENOTYPE IN PATIENTS WITH SKIN MELANOMA AFTER IMMUNOTHERAPY OF ACTIVATED LYMPHOCYTES

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    The major medical problem in the treatment of skin melanoma is improvement methods of treatment, increasing their effectiveness and safety. In this study, adoptive immunotherapy, using lymphocytes activated in vitro, was performed in 15 patients with metastatic melanoma. Evaluated the phenotype of peripheral blood lymphocytes and activation markers (HLA-DR, CD25, CD314, CD38, CD69) before and 3-4 weeks after immunotherapy. It is shown that for these patients is characterized by increasing the number of CD25+ and Treg lymphocytes in the bloodstream, which has not changed after immunotherapy. Adoptive immunotherapy in combination with chemotherapy resulted in a decrease of absolute number of lymphocyte, B- and T-lymphocytes, T helper cells, NKT-cells, CD314+ lymphocytes, CD38+ lymphocytes and immature T-lymphocytes (CD3+CD38+) (р < 0,05). However, there was a positive dynamic to increase the percentage of NK-cells to 32% and CD69+NK-cells to 21% and significant increase in expression of HLA-DR on all lymphocytes (p < 0.05). Adoptive immunotherapy characterized by the absence of side effects and can be recommended as accompanying to basic radiation and chemotherapy
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