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Two-body nonleptonic decays of the heavy mesons in the factorization approach

Frontiers of physics 2023年第6期18卷 107-126页

作者： Shuo-Ying Yu Xian-Wei Kang v.o.galkin Key Laboratory of Beam Technology of the Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China Federal Research Center“Computer Science and Control” Russian Academy of SciencesVavilov Street 40119333 MoscowRussia

In the framework of the factorization approach we calculate the branching fractions of 100 two-body nonleptonic decay channels in total,including 44 channels of the charm meson decays and 56 channels of the bottom meson *** charm meson decays,we test and confirm the previous observation that taking the limit for the number of colors N→∞significantly improves theoretical *** bottom meson decays,the penguin contributions are included in *** an essential input,we employ the weak decay form factors obtained in the framework of the relativistic quark model based on the quasi-potential *** form factors have well been tested by calculating observables in the semileptonic D and B meson decays and confronting obtained results with experimental *** general,the predictions for the nonleptonic decay branching fractions are ***,for a quantitative calculation it is necessary to account for a more subtle effects of the final-state interaction.

关键词： form factor quark model nonleptonic decay factorization method

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Microstructure Refinement and Precipitation Characteristics of TMCP-Processed Plates for Pipeline Applications

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Journal of Iron and Steel Research International 2011年第S1期18卷 482-486页

作者： Nastich S.Y Morozov Y.D Matrosov M.Y galkin v.v Denisov S.v I.P.Bardin Research Institute Center for Pipe and Weld Structure Steels9/232-nd Baumanskaya Str.105005MoscowRussia "MMK"-Magnitogorsky Iron and Steel Works 93Kirov Str.455002MagnitogorskRussia

The influence of technological parameters of controlled rolling and accelerated cooling (TMCP-processing) on microstructure and mechanical properties of plates with thickness of 25 mm and more at the mill "5000" of oJSC "Мagnitogorsk Iron and Steel Works" were *** necessity of formation of fine-grained ferrite-bainite microstructure without elongated areas of coarse lath bainite for achievement of DWTT properties is *** conditions and type of Nb(C,N) and (Nb,v)(C,N) particles with the size of less than 10 nm in the process of rolling and additional tempering are defined.

关键词： microalloying microstructure accelerated cooling precipitation

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Morphology of Gametes and Insemination in the vestimentiferan <i>Riftia pachyptila</i>

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open Journal of Marine Science 2012年第3期2卷 96-102页

作者： A. L. Drozdov S. v. galkin A.v. Zhirmunsky Institute of Marine Biology FEB RAS ul. Palchevskogo Vladivostok Russia P.P. Shirshov Institute of oceanology RAS Nakhimovsky pr. Moscow Russia

Ultrastructure of gametes (sperm and eggs) of vestimentiferan tubeworms and external-internal insemination by means of spermatozeugmata in Riftia pachyptila were described. The spermatozoa of Riftia are threadlike, about 130 μm long, and have a diameter of about 0.7 μm, narrowing to 0.2 μm in the apical portion of the macrodome, and pointed at the end of the tail. oocytes are produced by the ovaries at the first meiotic prophase stage. The early oocytes are small, hardly exceeding 10 μm in diameter, spherical cells with a poorly differentiated cytoplasm and large nuclei with a nucleolus. Completely formed oocytes reaching up to 130 μm in diameter leave the ovary, their germinal vesicle is unresorbed and has a nucleolus. They are coated by a yolk membrane of 1.2 μm. The eggs enter the oviduct, move along, and accumulate in its expanded anterior portion, the ovisack. The sperm is released in seawater as sperm packages, each having the shape of a torch. Then sperm moves to females and sperm packages at the posterior end of the oviduct surrounding of eggs. Inside the female tube, spermatozoa and, possibly, yet unsplit sperm packages, invade the oviducts through genital openings, where the unfertilized eggs are already present in the terminal portion of the eggsack.

关键词： Riftia Sperm Eggs Insemination Spermatozeugmata

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Impedance Spectroscopy of Concentrated Zirconia Nanopowder Dispersed Systems Experimental Technique

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World Journal of Condensed Matter Physics 2012年第1期2卷 1-9页

作者： o. S. Doroshkevych A. v. Shylo o. v. Saprukina I. A. Danilenko T. E. Konstantinova L. A. Ahkozov Donetsk o. o. galkin Institute for Physics and Engineering Donetsk Ukraine Donetsk o. o. galkin Institute for Physics and Engineering Donetsk Ukraine.

We propose an experimental spectroscopy method for investigating the electrical characteristics of concentrated nanopowder dispersed systems based on compacted Zro2. The technique is based on measurement of electrochemical impedance of the compacts. A possibility is shown for using the technique to study the processes of structure formation in nanopowder dispersed systems. It is shown that the technique is quite sensitive to detect subtle effects due to the chemical composition of the reactants from which the dispersed phase has been synthesized and external electromagnetic fields. In particular, it has been determined that the powders produced by chemical deposition possess conductiv-ity by nanoparticle volume which is several order of magnitude lower than that for powders obtained from the chloride feedstock. It has been revealed that exposure to weak (H = 105 A/m - 106 A/m) pulsed magnetic fields leads to a redistribution of free charge carriers between volume and surface of the nanoparticles.

关键词： Impedance Spectroscopy Nanopowder Dispersed Systems Zirconia Dioxide Low-Energy Action

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用侧向测井识别彼尔姆北部油田亲油性储层和沥青质层段

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测井技术 2020年第4期44卷 362-366页

作者：加尔金列可姆采夫伊留申巴杰黑杜雪威(译) 彼尔姆国立科研理工大学彼尔姆俄罗斯俄罗斯联邦莫斯科卢克石油公司彼尔姆俄罗斯中国石油集团测井有限公司技术中心陕西西安710021

根据砂岩岩心资料,确定彼尔姆地区存在沥青砂。采用X射线层析成像方法,评价不同电阻率范围内饱和油岩心的润湿性。研究发现,亲水性储层的侧向测井电阻率小于120Ω·m,微侧向测井电阻率小于100Ω·m,亲油性“白色”砂岩的电阻率大于200Ω... 详细信息

根据砂岩岩心资料,确定彼尔姆地区存在沥青砂。采用X射线层析成像方法,评价不同电阻率范围内饱和油岩心的润湿性。研究发现,亲水性储层的侧向测井电阻率小于120Ω·m,微侧向测井电阻率小于100Ω·m,亲油性“白色”砂岩的电阻率大于200Ω·m,微侧向测井电阻率小于100Ω·m,侧向测井资料识别出的“黑色砂岩”电阻率大于200Ω·m,微侧向测井电阻率为100~300Ω·m。通过X射线层析成像和微侧向测井方法,可有效识别亲水性储层、亲油性饱和油储层及亲油性沥青质储层(“黑色砂岩”)等不同储层,能够解决油田的有效开发难题。

关键词：侧向测井微侧向测井沥青砂润湿性 X射线层析成像亲油性储层沥青化

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