Institution
Voronezh State University
Education•Voronezh, Russia•
About: Voronezh State University is a education organization based out in Voronezh, Russia. It is known for research contribution in the topics: Silicon & Boundary value problem. The organization has 5166 authors who have published 6097 publications receiving 31680 citations. The organization is also known as: VSU & Voronezh University.
Topics: Silicon, Boundary value problem, Sorption, Dielectric, Membrane
Papers published on a yearly basis
Papers
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TL;DR: The results obtained provide additional evidence for the karyotype conservatism, at least regarding the number of autosomes, for variation in chromosomal distribution of rDNA loci between species and for the lack of the ancestral insect telomeric sequence TTAGG in lace bugs.
Abstract: The karyotypes of 10 species from 9 genera of the family Tingidae (Hemiptera, Heteroptera, Cimicomorpha) are described and illustrated for the first time. These species are: Agrammaatricapillum (Spinola, 1837), Catoplatuscarthusianus (Goeze, 1778), Dictylaplatyoma (Fieber, 1861), Lasiacanthahermani Vasarhelyi, 1977, Oncochilasimplex (Herrich-Schaeffer, 1830), Tingis (Neolasiotropis) pilosa Hummel, 1825, and T. (Tropidocheila) reticulata Herrich-Schaeffer, 1835, all with 2n = 12A + XY, as well as Acalyptamarginata (Wolff, 1804), Derephysia (Paraderephysia) longispina Golub, 1974, and Dictyonotastrichnocera Fieber, 1844, all with 2n = 12A + X(0). Moreover, genera Catoplatus Spinola, 1837, Derephysia Spinola, 1837, and Oncochila (Herrich-Schaeffer, 1830) were explored cytogenetically for the first time. Much as all other hitherto studied lace bugs, the species studied here have 12 autosomes but differ in their sex chromosome systems. The ribosomal clusters were localized on male meiotic cells of all ten species already mentioned and, additionally, in Acalyptacarinata Panzer, 1806 known to have 2n = 12A + X (Grozeva and Nokkala 2001) by fluorescence in situ hybridization (FISH) using a PCR amplified 18S rDNA fragment as a probe. In all cases, rDNA loci were located interstitially on a pair of autosomes. Furthermore, two species possessed some additional rDNA clusters. Thus, Acalyptamarginata showed clearly defined interstitial clusters on one more pair of autosomes, whereas Derephysialongispina had a terminal cluster on the X-chromosome. FISH performed with the telomeric (TTAGG) n probe did not reveal labelling in chromosomes of any species studied. Hence, the results obtained provide additional evidence for the karyotype conservatism, at least regarding the number of autosomes, for variation in chromosomal distribution of rDNA loci between species and for the lack of the ancestral insect telomeric sequence TTAGG in lace bugs. Preliminary taxonomic comments are made basing on some cytogenetic evidence.
16 citations
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TL;DR: In this paper, the representation theory of locally compact Abelian groups is used to introduce linear operators with the two-point Bohr spectrum and to study their spectral properties, in particular, the structure of the inverse operators.
16 citations
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TL;DR: In this article, the controllability problem for a system governed by a semilinear functional differential inclusion in a Banach space in the presence of impulse effects and delay is studied.
Abstract: We study a controllability problem for a system governed by a semilinear functional differential inclusion in a Banach space in the presence of impulse effects and delay. Assuming a regularity of the multivalued non-linearity in terms of the Hausdorff measure of noncompactness we do not require the compactness of the evolution operator generated by the linear part of inclusion. We find existence results for mild solutions of this problem under various growth conditions on the nonlinear part and on the jump functions. As example, we consider the controllability of an impulsive system governed by a wave equation with delayed feedback.
16 citations
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TL;DR: In this article, the effect of electrical and geometric heterogeneity of the surface of heterogeneous sulfocation-exchanger membranes Ralex CM Pes produced by MEGA a.s. (Czech Republic) and the Russian membranes MK-40 manufactured by JSC “Shchekinoazot” on current voltage characteristics (CVC), conditions of occurrence and intensity of electroconvective instability at the membrane/solution interface in intense current modes was carried out.
16 citations
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TL;DR: Kinetic and regulatory properties of NADP-isocitrate dehydrogenase and aspartate aminotransferase responsible for 2-oxoglutarate metabolism in the cytoplasm and mitochondria of rat liver were studied and it was suggested that synthesis of 2-OxoglUTarate should be mainly determined by cy toplasmic NADP (86% of the total activity in the cell), whereas its utilization should depend on cytop lasmic AsAT.
Abstract: Kinetic and regulatory properties of NADP-isocitrate dehydrogenase (NADP-IDH) and aspartate aminotransferase (AsAT) responsible for 2-oxoglutarate metabolism in the cytoplasm and mitochondria of rat liver were studied. Based on the subcellular location of these enzymes and their kinetic parameters (Km, Ksi) obtained with highly purified enzyme preparations, it is suggested that synthesis of 2-oxoglutarate should be mainly determined by cytoplasmic NADP-IDH (86% of the total activity in the cell), whereas its utilization should depend on cytoplasmic AsAT (78% of the total activity). AsAT from the rat liver was specified by substrate inhibition and also by changes in the enzyme affinity for the substrates under the influence of some intermediates of the tricarboxylic acid cycle: isocitrate, succinate, fumarate, and citrate. Key intermediates of nitrogen metabolism (glutamate, glutamine, and aspartate) are involved in the regulation of NADP-IDH and AsAT. These enzymes are regulated oppositely, and the catalytic activity of one enzyme can be stimulated concurrently with a decrease in the activity of the other. Obviously, carbon and nitrogen metabolism in the rat liver can be controlled through redistribution of 2-oxoglutarate between different metabolic processes via regulatory mechanisms influencing differently located forms of NADP-IDH and AsAT.
16 citations
Authors
Showing all 5254 results
Name | H-index | Papers | Citations |
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Misha Ivanov | 51 | 234 | 12737 |
Rashid A. Ganeev | 46 | 469 | 7220 |
Abir U. Igamberdiev | 43 | 220 | 6150 |
Alexander Gusev | 40 | 185 | 11407 |
Fedor Sukochev | 36 | 347 | 4621 |
Igor D. Novikov | 31 | 136 | 5066 |
Gregory Berkolaiko | 31 | 124 | 2925 |
Andrey Polyakov | 30 | 223 | 5028 |
Natalia V. Bykova | 29 | 54 | 2171 |
Stephen Montgomery-Smith | 28 | 121 | 2219 |
N. L. Manakov | 27 | 122 | 2408 |
Dmitry Marchenko | 26 | 88 | 3976 |
V. A. Khonik | 25 | 167 | 2312 |
M. Yu. Antipin | 24 | 587 | 3102 |
Alexander Smogunov | 24 | 70 | 32207 |