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Localized States of an Excess Electron in an Ionic Cluster

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Communications in Theoretical Physics 2013年第12期60卷 738-746页

作者： K.V.Grigorishin B.I.lev Boholyubov Institute for Theoretical Physics of the National Academy of Sciences of Ukraine

A theory of an electron afnity for an ionic cluster is proposed both in a quasiclassical approach and with quantization of a polarization electric field in a nanoparticle. A critical size of the cluster regarding in formation of an electron's autolocalized state, dependencies of energy and radius of a polaron on a cluster's size are obtained by a variational method. It has been found that binding energy of the electron in the cluster depends on a cluster's radius but a radius of electron's auto-localization does not depend on the cluster's radius and it equals to the polaron radius in a corresponding infinity crystal. A bound state of the electron in a cluster is possible only if the cluster's radius is more than the polaron radius.

关键词：电子亲和势离子簇局域态小极化子经典方法极化电场临界尺寸变分方法

Pseudogamous Apomixis in Maize and Sorghum in Diploid-Tetraploid Crosses

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Phyton-International Journal of Experimental Botany 2019年第4期88卷 389-401页

作者： Marina Tsvetova lev Elkonin Yulia Italianskaya Agricultural Research Institute of South-East Region Department of BiotechnologySaratov410010Russia

Apomictic seed development is a complex process including formation of unreduced embryo sac,parthenogenetic embryo development from the egg cell,and endosperm formation either autonomously,or due to fertilization of polar nuclei by the sperm(under pseudogamous form of apomixis).In the latter case,an obstacle to the normal endosperm development is disturbance of maternal(m)-to-paternal(p)genomic ratio 2m:1p that occurs in the cases of pollination of unreduced embryo sac with haploid *** of tetraploid pollinators can overcome this problem because in such crosses maternal-to-paternal genomic ratio is 4m:2p that provides formation of kernels with plump *** tetraploid lines as pollen parents we observed formation of plump kernels on the ears and panicles of diploid maize and sorghum *** kernels had hybrid endosperm and diploid maternal-type embryo or hybrid embryo with different ploidy level(2n,3n,4n).The frequencies of plump kernels on the ear ranged from 0.2-0.3%to 5.7-6.2%counting from the number of ***-type plants were found in two maize lines,their frequency varying from 10.7 to 37.5%of the progeny *** CMS-lines of sorghum pollinated with tetraploid sorghum accessions,the frequency of plump kernels ranged from 0.6 to 14.0%counting from the number of ovaries;the frequency of maternal-type plants varied from 33.0 up to 96.1%.The hybrid nature of endosperm of the kernels that gave rise to maternal-type plants has been proved by marker gene expression and by SDS-electrophoresis of endosperm *** data testify to variable modes of seed formation under diploid×tetraploid crosses in maize and sorghum both by amphi-and by ***,usage of tetraploid pollinators might be a promising approach for isolation of apomixis in maize and sorghum accessions.

关键词： Interploidy crosses genomic balance unreduced embryo sac pseudogamous apomixis Zea mays L Sorghum bicolor(L.)Moench

Cold Nuclear Fusion in the Unitary Quantum Theory

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Chinese journal of nuclear physics 1995年第4期17卷 360-370页

作者： lev G.Sapogin Igor V.Kulikov Depariment of Physics MADI-Technical UniversilyMoscowRussia Langenfeldgasse 68/24/18 A-1120 ViennaAustria

The interaction of the charged particles in the new Unitary Quantum theory isconsidered. It is shown that the distance of approachment of deuterons to each other verystrongly depends on the phase of the wave function and not only upon the energy. This thesis isnot discussed in the conventional quantum theory. It can easily explain the experiments on thecold nuclear fusion.

关键词： Cold nuclear fusion Unitary quantum theory Non-linear or nonlocal theories and models Nuclear reaction and scattering models

Effect of drought stress on male fertility restoration in A3 CMS-inducing cytoplasm of sorghum

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The Crop Journal 2017年第4期5卷 282-289页

作者： Valentin V.Kozhemyakin lev A.Elkonin Jeffery A.Dahlberg Department of Biotechnology Agricultural Research Institute of South-East Region Tulaikov Street 7 Saratov 410010 Russia Kearney Agricultural Research & Extension (KARE) 9240 South Riverbend Avenue Parlier CA 93648 USA

Use of cytoplasmic male sterility (CMS) in hybrid breeding requires effective male fertility-restoring lines. In sorghum, very few restoring lines that can restore fertility in A_3 CMS have been reported. To identify the reasons for this deficiency, F_1 and F_2 hybrids of an A_3 CMS line crossed with the line IS1112C, a donor of fertility-restoring (Rf) genes for A_3 cytoplasm, and testcrosses of fertile plants to A_3CMS lines were grown under contrasting water availability regimes in dryland and irrigated field plots. In the irrigated plots the frequency of fertile plants in testcrosses was twice that in dryland plots (P < 0.05). Fertile plants from the F_2 family grown in the irrigated plots showed significantly higher restoration ability than fertile plants from the same family grown in dryland plots. F_3 plants from the F_2 family grown in irrigated plots yielded on average a sixfold higherfrequency of fertile plants in testcrosses than F_3 plants derived from dryland plots (P < 0.01).Fertility of testcross hybrids correlated negatively with air vapor pressure deficit (VPD) at flowering (r = - 0.96; P < 0.01) suggesting that VPD is a trigger for downregulation of Rf genes for A_3 cytoplasm.

关键词： Sorghum bicolor (L.) Moench Cytoplasmic male sterility A3 cytoplasm Fertility-restoring genes Epigenetics Vapor pressure deficit

Degassing of primordial hydrogen and helium as the major energy source for internal terrestrial processes

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Geoscience Frontiers 2012年第6期3卷 911-921页

作者： Arie lev Gilat Alexander Vol Geological Survey of Israel(Ret.) 6/2 Shoshan Tsahor St..Modi'in 71705.Israel Oshadi Drug Administration Ltd P.O.Box 2042.Rehovot 76120Israel

Examples of the mightiest energy releases by great earthquakes and volcanic eruptions and hypotheses providing explanations for them are analyzed along with the results of some recently pub- lished researches and visualizations. The emerging conclusions are that the mechanism of the strong earthquake is a chemical explosion; that volcanic eruption is a special type of earthquake wherein the hypocenter rises to the earth-surface; and that there is an association between the seismic-volcanic processes and mantle ＂fluids＂ and the lack of energy for mantle plumes. A conceptual system of hypoth- eses is put forward to explain the conservation of energy during Earth＇s accretion, its quasi-stable release by primordial H- and He-degassing and of the crucial role of the energy of degassing-eomprising- reactions in endogenic processes. Specific mechanisms and chemical processes are proposed for the gas-liquid mantle plumes melting through the solid mantle using heat-energy released in reactions of their metamorphic and chemical transformation under gradual decrease of pressure and temperature; volcanic gases are put forward as energy carriers. 3He performance as a unique measuring transformer correlative to the internal heat flow was used for calculation of energy release by degassing; it equals to 5.12 × 1020 J/yr, an amount of energy five-fold greater than the entire energy loss involved in earthquake and volcanic activity. The hypotheses proposed are objectively testable.

关键词： Earthquakes Volcanism Energy-source Hydrogen Helium Degassing

Application of biostimulants for vegetative propagation of endangered Abies gracilis

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Journal of Forestry Research 2020年第4期31卷 1195-1199页

作者： lev P.Trofimuk Pavel S.Kirillov Aleksandr A.Egorov St.Petersburg State Forest Technical University Institutskii pereulok 5Saint-PetersburgRussia 194021 St.Petersburg State University University quay 7-9Saint-PetersburgRussia 199034

Abies gracilis Kom.(Pinaceae)is one of the rarest and endangered conifers in the Russian flora,which must be cultivated ex situ to ensure its *** of *** do not take root without *** used a selection of biostimulants,concentrations,and conditions of their use to significantly increase Abies gracilis rooting,and to accelerate the production of planting material,and to reduce rooting time to one *** tested 4 rooting systems:IBA,IBA with glucose and glycine,and original biostimulants(S-try and S-5).The original S-5 biostimulating system had the most balanced ratio of *** number of rooted samples increased 2.7 times and the length of roots increased 1.8 time when using S-5 as compared to IBA.S-try and S-5-original biostimulant systems were synthesized and collected in 2011 and 2014,respectively,and were tested in *** Forest Technical University.

关键词： Root formation Abies gracilis Biostimulant Planting Vegetative reproduction

Deep Forest as a framework for a new class of machine-learning models

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National Science Review 2019年第2期6卷 186-187页

作者： lev V.Utkin Anna A.Meldo Andrei V.Konstantinov Laboratory of Neural Network Technology and Artificial Intelligence Peter the Great St. Petersburg Polytechnic University

A new deep learning framework—the socalled Deep Forest (DF), proposed by Zhi-Hua Zhou and Ji Feng [1,2]—can be regarded as one of the important events of 2017 in machine learning, although it was unjustly unnoticed by a large number of researchers. The DF combines several ensemble-based methods, including Random Forests (RFs) and Stacking, into a structure that is similar to a multi-layer neural network, but each layer in the DF

关键词： Deep Forest as a framework for a new class of machine-learning models

Applications of two electric arc plasma torches for the beneficiation of natural quartz

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International Journal of Minerals,Metallurgy and Materials 2019年第3期26卷 267-273页

作者： Yuri-Mikhailovich Grishin Long Miao lev-Alekseevich Borisov Nikolay-Mikhailovich Serykh Alexey-Yurievich Kulagin Department of Thermal physics Bauman Moscow State Technical University Federal State Unitary Enterprise Tsentrkvarts

Experimental beneficiation processes of quartz concentrate in arc plasma torches of two different types and electric powers were studied. An emission scanning electron microscope and a universal laser analyzer were used to investigate the structures as well as the size distributions of grains and microparticles. Inductively coupled plasma–mass spectrometry was used to determine the chemical compositions of nonstructural solid-phase mineral impurities in quartz concentrate. Results related to the modified grains' structure and size distribution, the compositions of impurities, and the gas–liquid inclusions in the quartz concentrate were investigated. The total impurities concentrations in the processed grains were found to satisfy the IOTA-STD standard(industry standard for grading high quality fused quartz products). The optimal condition(i.e., the optimal specific plasma enthalpy) for the production of high-purity quartz in arc plasma torches was found to depend on the geological-genetic type and the structural and textural features(i.e., chemical composition and gas–liquid inclusions) of the quartz concentrate.

关键词： low-temperature plasma beneficiation high purity quartz arc plasma torch IOTA-STD standard

Evaluation of embankment foundation creep in conditions of deep bedding of roof in permafrost soils

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Research in Cold and Arid Regions 2013年第5期5卷 534-539页

作者： Evgeny Ashpiz lev Khrustalev Department of Track and Track Facilities Moscow State University of Railway Department of Geology Lenynskie goryLomonosow Moscow State University

Railroad operating experience in permafrost conditions has shown that deformations of embankments on thawing foun- dations last for a long time. After an initial period of heat settlement due to permafrost degradation, the determining factor is the plastic flow of seasonal thawed soils of the foundation upper layer under the embankment. This paper provides a method to evaluate these deformations, and calculation examples using data from line sections of the Chum-Labytnangi Railway in northwestern Russia. It also discusses several methods of embankment stabilization, including the use of ver- tical thermosiphons.

关键词： permafrost railway plastic flow embankment stabilization methods thermosiphons