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Supersymmetry in the Geometric Representation of the Early Universe Wave Function

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Journal of Modern Physics 2023年第6期14卷 777-789页

作者： Bohdan I. lev Bogolyubov Institute for Theoretical Physics NAS of Ukraine Kyiv Ukraine Condensed Matter Physics Department J. Stefan Institute Ljubljana Slovenia Faculty of Mathematics and Physics University of Ljubljana Ljubljana Slovenia

The main goal of this article is to present a new result of a possible approach to the geometrical description of the birth and evolution of the universe. The novelty of the article is that it is possible to explain the nature of supersymmetry in terms of the geometric representation of the wave function and to propose a mechanism of spontaneous symmetry breaking of the excitation of the universe with different degrees of freedom. It is under such conditions that the well-known spontaneous symmetry breaking occurs and individual excitation acquires mass. At the same time, a phase transition of the first kind occurs with the formation of a new phase.

关键词： Clifford Algebra Wave Function Early Universe Supersymmetry Spontaneous Symmetry Breaking

Dislocations in Cosserat Plates

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Journal of Applied Mathematics and Physics 2022年第11期10卷 3369-3384页

作者： Roman Kvasov lev Steinberg Department of Mathematics University of Puerto Rico at Aguadilla Puerto Rico USA Department of Mathematics University of Puerto Rico at Mayaguez Puerto Rico USA

This article provides the numerical modeling of the dislocations in the Cosserat elastic plates based on the Cosserat Plates Theory developed by the authors. The dislocation is modeled by a sequence of domains that converge to the point of the dislocation and by a residual force distributed around that point. The plate deformation caused by the dislocation is calculated using the Finite Element Method. We also discuss the effect of the dislocation on the cavities present in the Cosserat plates.

关键词： Dislocation Cosserat Plates Cosserat Materials

Predicting elastic properties of hard-coating alloys using ab-initio and machine learning methods

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npj Computational Materials 2022年第1期8卷 139-148页

作者： H.levämäki F.Tasnádi D.G.Sangiovanni L.J.S.Johnson R.Armiento I.A.Abrikosov Department of Physics Chemistry and BiologyLinköping UniversitySE-58183LinköpingSweden Sandvik Coromant S-12680StockholmSweden Materials Modeling and Development Laboratory National University of Science and Technology‘MISIS’119049MoscowRussia

Accelerated design of hard-coating materials requires state-of-the-art computational tools,which include data-driven techniques,building databases,and training machine learning *** develop a heavily automated high-throughput workflow to build a database of industrially relevant hard-coating materials,such as binary and ternary *** use the high-throughput toolkit to automate the density functional theory calculation *** present results,including elastic constants that are a key parameter determining mechanical properties of hard-coatings,for X_(1−x)Y_(x)N ternary nitrides,where X,Y∈{Al,Ti,Zr,Hf}and fraction x=0,1/4,1/2,3/4,*** also explore ways for machine learning to support and complement the designed *** find that the crystal graph convolutional neural network trained on ordered lattices has sufficient accuracy for the disordered nitrides,suggesting that existing databases provide important data for predicting mechanical properties of qualitatively different types of materials,in our case disordered hard-coating alloys.

关键词： coating alloys ternary

Factorizations of groups and related topics

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Science China Mathematics 2009年第2期52卷 217-230页

作者： AMBERG Bernhard KAZARIN lev Fachbereich 08 Universitaet MainzGermany Department of Mathematics Yaroslavl State University

This is a survey of some recent progress in the theory of groups with factorizations. Some of the methods can be used to obtain information about finite groups in general, nilpotent algebras and nearrings.

关键词： products of groups factorizations

Development and prospects of the fire space monitoring system in Kazakhstan

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Frontiers of Earth Science 2012年第3期6卷 276-282页

作者： lev SPIVAK Oleg ARKHIPKIN Gulshat SAGATDINOVA Space Research Institute National Center of Space Research and Technology Shevchenko Almaty 050010 Kazakhstan

This article provides a brief description of the fire space monitoring system in Kazakhstan, including the GIS-technology incorporated in its structure. The system performs operative space monitoring of fire areas and burnt areas, mapping of large fire areas, analysis of seasonal and long-term dynamics of burnt areas, and estimation of fire risk zones. Examples of output information obtained from space monitoring of fires are given. Possible directions of development of fire space monitoring in Kazakhstan are specified.

关键词： space images remote sensing fire space monitoring fire areas burnt areas operating mapping,zones of high fire risk

Development of sorghum mutants with improved in vitro protein digestibility by CRISPR/Cas9 editing of kafirin genes

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作物学报:英文版 2023年第5期11卷 1411-1418页

作者： lev A.Elkonin Grigoriy A.Gerashchenkov Natalie V.Borisenko Odyssey A.Kenzhegulov Saule Kh.Sarsenova Natalya A.Rozhnova Valery M.Panin Federal Centre of Agriculture Research of South-East Region Saratov 410010Russia Institute of Biochemistry and Genetics-Subdivision of the Ufa Federal Research Centre of the Russian Academy of Sciences Ufa 450054Russia

Sorghum(Sorghum bicolor(L.) Moench) is a major world crop that is a reliable source of fodder and food grain in arid regions. However, unlike other cereals, sorghum grain has low nutritional value, owing mainly to the resistance of its storage proteins(kafirins) to protease digestion. Changing the composition of kafirins or their primary structure may address this problem. To induce mutations in kafirin-encoding genes that were expected to disturb their accumulation in endosperm cells, we used a genome-editing approach. By Agrobacterium-mediated genetic transformation of immature embryos of cv. Avans, we obtained 14 transgenic plants with genetic constructs for site-directed mutagenesis of the k1C5 and g KAF1 genes encoding 22 k Da a-and 28 kDa γ-kafirins, respectively. Sequencing of 5 regenerants obtained by using k1C5-addressing vector revealed two plants with mutations. T_1 progeny of these mutants had higher in vitro digestibility of endosperm proteins(86%–92%), in comparison with the donor Avans(63%–67%). The kernels of these plants had a thick vitreous endosperm. A mutant with increased in vitro protein digestibility and vitreous endosperm, carrying a mutation in the target sequence, was also obtained by use of the gKAF1-addressing vector. Thus, using genome editing technology, we have obtained mutants with improved kafirin digestibility that can be used in sorghum breeding.

关键词： Sorghum CRISPR/Cas Kafirins In vitro protein digestibility Vitreous endosperm

Exploration and determination of the principles of rotary-percussive underground slimhole drilling

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International Journal of Mining Science and Technology 2014年第2期24卷 245-249页

作者： Shadrina Anastasija Saruev lev Institute of Natural Resources Tomsk Polytechnic University Institute of High-Technology Physics Tomsk Polytechnic University

A possibility of the efficient use of rotary percussive drilling to provide drilling smaller diameter holes(40–70 mm) both in mining and prospecting is disclosed herein. A new construction designed for the nipple thread connection is described. The relative amplitude variation, change of power pulse time and energy in their propagation throughout the drilling tool are determined. A possibility of the efficient power pulse transfer along the drill string to the rock destruction tools with new nipple connections which allow automating the make-up and breakout system of drill pipe was supported by experiments.

关键词：小井眼钻井旋转撞击式螺纹连接钻井工具脉冲时间钻孔直径冲击钻进

Regulating dual-use research:Lessons from Israel and the United States

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Journal of Biosafety and Biosecurity 2019年第2期1卷 80-85页

作者： Ori lev Department of Public Policy and Administration Sapir Academic CollegeIsrael

Over the past 20 years,and with greater urgency since the H5N1 papers controversy(2012),dual-use research of concern(DURC)has been extensively debated by the scientific community,regulators,and the public at *** have raised the need to regulate DURC;however,despite the urgency of this issue,to date,only two countries have implemented specific regulations,United States and Israel(notably,China is in the final stages of creating a set of DURC-related regulations).In this paper,I have compared these policies as case studies that may benefit other ***,the present study aimed to critically compare the DURC policies of the US and Israel and determine whether their different approaches provide a rigorous framework for the regulation of DURC.I have shown that in some aspects,they have adopted similar approaches;for example,allowing local committees to play a role in assessing the ***,they differ in certain important aspects;for instance,the US policies have laid out a mechanism through which academic institutions and the government decide jointly on how to address risky studies,while the Israeli law places the authority solely in government *** aim in comparing the policies is twofold;first,to reveal the weaknesses and strengths of each policy,thereby aiding their improvement,and second,to provide those that are considering developing policies in this field an overview of what the current approaches look like,thereby enabling them to articulate their own approach while taking into account the experience gained by the US and Israel.

关键词： Antimicrobial resistance Extended spectrum beta lactamase(ESBL) Urinary tract infections(UTIs) Gram negative bacteria(GNB)

Nonlocal Free Energy of a Spatially Inhomogeneous Superconductor

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Communications in Theoretical Physics 2012年第5期57卷 879-892页

作者： K.V.Grigorishin B.I.lev Boholyubov Institute for Theoretical Physics of the Ukrainian National Academy of Sciences 14-b Metrolohichna str.Kiev-03680Ukraine

The microscopic approach is developed for obtaining of the free energy of a superconductor based on direct calculation of the vacuum *** free energy functional of the spatially inhomogeneous superconductor in a magnetic field is obtained with help of the developed *** obtained functional is generalization of GinzburgLandau functionals for any temperature,for arbitrary spatial variations of the order parameter and for the nonlocality of a magnetic response and the order ***,the nonlocality of the magnetic response is the consequence of order parameter's *** extremals of this functional are considered in the explicit form in the low-and high-temperature limit at the condition of slowness of spatial variations of the order parameter.

关键词：空间变化超导体不均匀非局部能源免费非局域性发达国家