Search Results - (Author, Cooperation:A A Zhukov)
-
1Latest Papers from Table of Contents or Articles in PressStaff View
Publication Date: 2018-11-15Publisher: Institute of Physics (IOP)Print ISSN: 1757-8981Electronic ISSN: 1757-899XTopics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressY. Ye ; G. Blaser ; M. H. Horrocks ; M. J. Ruedas-Rama ; S. Ibrahim ; A. A. Zhukov ; A. Orte ; D. Klenerman ; S. E. Jackson ; D. Komander
Nature Publishing Group (NPG)
Published 2012Staff ViewPublication Date: 2012-12-04Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Fluorescence Resonance Energy Transfer ; *Models, Molecular ; Protein Binding ; Protein Structure, Tertiary ; Ubiquitin/*chemistry/*metabolismPublished by: -
3Articles: DFG German National LicensesZhukov, A. A. ; Purnell, A. ; Miyoshi, Y. ; Bugoslavsky, Y. ; Lockman, Z. ; Berenov, A.
Woodbury, NY : American Institute of Physics (AIP)
Published 2002Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: The microwave power and frequency dependence of the surface resistance of MgB2 films and powder samples were studied. Sample quality is relatively easy to identify by the breakdown in the ω2 law for poor-quality samples at all temperatures. The performance of MgB2 at 10 GHz and 21 K was compared directly with that of high-quality YBCO films. The surface resistance of MgB2 was found to be approximately three times higher at low microwave power and showed an onset of nonlinearity at microwave surface fields ten times lower than the YBCO film. It is clear that MgB2 films are not yet optimized for microwave applications. © 2002 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesTrunin, M. R. ; Zhukov, A. A. ; Tsydynzhapov, G. É. ; Sokolov, A. T. ; Klinkova, L. A. ; Barkovskii, N. V.
Springer
Published 1996Staff ViewISSN: 1090-6487Keywords: 84.37.+q ; 74.72.Yg ; 74.72.Bk ; 74.72.HsSource: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract The temperature dependences of the real part R s and the imaginary part X s of the surface impedance Z s =R s +iX s of the superconductor Ba0.6K0.4BiO3 (T c ≃30 K) are measured at a frequency of 9.4 GHz. Its temperature dependence Z s (T) and that of the complex conductivity σ s (T) can be described on the basis of a two-fluid model under two assumptions: The density of superconducting carriers increases linearly, and the relaxation time increases as a power law (∝1/T 5), with decreasing temperature T〈T c . This model also describes well the curves Z s (T) and σs (T) recently measured for YBa2Cu3O6.95 and Bi2Sr2CaCu2O8 single crystals.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesStaff View
ISSN: 1090-6487Keywords: 74.25.Nf ; 74.72.BkSource: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract The real and imaginary parts of the surface impedance Z s =R s +iX s of YBa2Cu3O6.95 single crystals are measured at a frequency ω/π=9.4 GHz. The quantities R s (T) and X s (T) are linear functions of temperature for T〈0.3T c (T c =93.5 K). A maximum of R s (T) and a plateau of X s (T) are observed in the interval 35〈T〈65 K. Our experimental data, just as all recent measurements of R s (T) in YBa2Cu3O6.95 single crystals in the temperature range 0〈T〈1.3T c , are described well in a two-fluid model which assumes electron-phonon scattering of quasiparticles.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1090-6509Source: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract The surface impedance Z s=R s+iX s of samples of Ba0.6K0.4BiO3 in the temperature range 4〈T〈50 K is measured at 9.42 GHz. The BCS theory completely describes the electrodynamic properties of Nb in the dirty limit, and its application to Ba0.6K0.4BiO3 allows determination of the London penetration depth λ L(0)=3100±100 Å.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1090-6509Source: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract The real part R s and the imaginary part X s of the surface impedance Z s=R s+ iX s of Tl2Ba2CaCu2O8−δ and YBa2Cu3O6.95 single crystals have been measured with high precision at frequency ω/2π=9.4 GHz in the temperature range 0〈T〈140 K. In the Tl2Ba2CaCu2O8−δ crystal a linear temperature dependence R s(T) has been found for T⩽50 K, and the magnetic field penetration depth λ(4.2 K)=X s(4.2 K)/ω μ 0≈3760 Å has been measured. Along with well known features of the function Z s(T) in high-quality YBa2Cu3O6.95 single crystals, such as the linearity of λ(T) and R s(T) for T〈T c/3 and a maximum of R s(T) at T∼T c/2, the linearity range of λ(T) extends to T≃50 K, and this curve has a plateau in the range 60〈T〈85 K. The curve of R s(T) in both the superconducting and normal states of YBa2Cu3O6.95 is well described by a two-fluid model with the electron-phonon mechanism of quasiparticle relaxation. A formula describing the curve of λ 2(0)/λ 2(T) throughout the studied temperature range is also given.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesZhukov, A. A. ; Joukov, N. A. ; Mikheev, M. G. ; Perkins, G. K. ; Caplin, A. D. ; Bugoslavsky, Yu. V.
Springer
Published 1998Staff ViewISSN: 1090-6509Source: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract A solution is obtained for the Bean critical-state model in an inclined magnetic field which leads to localization of the irreversible magnetic moment induced by the shielding currents. An experimental investigation of YBa2Cu3Oy single crystals and epitaxial films, and also plates of classical superconductors using vector magnetometry yields results fully consistent with the model calculations. The established geometric effects have an important influence on measurements of the angular dependence of the critical current and its anisotropy in a high-temperature superconductor.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesShovkun, D. V. ; Trunin, M. R. ; Zhukov, A. A. ; Nefyodov, Yu. A. ; Bontemps, N. ; Enríquez, H. ; Buzdin, A. ; Daumens, M. ; Tamegai, T.
Springer
Published 2000Staff ViewISSN: 1090-6487Keywords: 74.72.Hs ; 74.25.HaSource: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract The c-axis penetration depth Δλc in Bi2Sr2CaCu2O8+δ (BSCCO) single crystals as a function of temperature has been determined using two techniques, namely, measurements of the ac-susceptibility at a frequency of 100 kHz and the surface impedance at 9.4 GHz. Both techniques yield an almost linear function Δλc(T)∝T in the temperature range T〈0.5T c. Electrodynamic analysis of the impedance anisotropy has allowed us to estimate λc(0)≈50 µm in BSCCO crystals overdoped with oxygen (T c≈84 K) and λc(0)≈150 µm at the optimal doping level (T c≈90 K).Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesZhukov, A. A. ; Mikheev, M. G. ; Voronkova, V. I. ; Kugel’, K. I. ; Rakhmanov, A. L. ; Küpfer, H. ; Wolf, T. ; Perkins, G. K. ; Caplin, A. D.
Springer
Published 1999Staff ViewISSN: 1090-6487Keywords: 74.72.Bk ; 75.60.Ej ; 74.25.HaSource: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract Magnetization oscillations due to the commensurability of the vortex and crystal lattice periods in YBa2Cu3Oy (y=6.97±0.02) single crystals are investigated using a high angular resolution magnetometer. A sharp peak in the temperature dependence of the oscillation amplitude as well as other features in the behavior of the oscillation amplitude and of the irreversible magnetization are observed at T f ∼60 K. It is inferred that T f is the temperature of a transition of the solid vortex state to a smectic phase.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesStaff View
ISSN: 1573-4811Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 1573-885XSource: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesKokora, A. N. ; Zhukov, A. A. ; Shalashov, V. A. ; Lyumarov, E. N. ; Kalyanova, M. P. ; Belyanin, V. A.
Springer
Published 1966Staff ViewISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract It is known that the structure of cast irons and steels can contain both cementite and graphite. In unalloyed steels and cast irons cementite is a metastable phase and can be graphitized in the process of prolonged annealing, which is used in the production of malleable cast irons and graphitized steels. Alloying with carbide-forming elements (Cr, Mn, V, etc.) in various amounts can stabilize cementite, providing stably white or stably mottled cast irons. A recently discovered phenomenon connected with formation of metastable graphite in the structure of alloy cast irons and steels, which undergoes carbidization in prolonged annealing, has been called metastable graphitization and is much less known.Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Conclusions The mechanism of layer-by-layer crystallization of globular graphite with the formation of fullerenes suggested by some researchers (and correct in principle) should be supplemented by taking into account the following thermodynamic aspect. A buckeyball like C60 cannot become itself an endogenic center of graphitization, because its diameter of less than 1 nm should be compressed by a very high Laplace pressure due to the effect of the interphase surface tension: then the chemical potential of the carbon will exceed that of cementite and cause “carbonization” instead of “graphitization”. It is more likely that “fullerene” curved layers are deposited on quite coarse tensoactive nonmetallic inclusions (endogenic and exogenic) rather than on the C60 buckeyballs.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesZhukov, A. A. ; Polovinchuk, V. P. ; Osadchuk, A. Yu. ; Opalikhina, O. D. ; Pilipchuk, V. I.
Springer
Published 1992Staff ViewISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Conclusions When cast irons containing ledeburitic cementite are heated, the peripheral regions of the inclusions are decarburized as a result of the diffusion of carbon to the surrounding metal, and the chemical composition of the carbide M3C deviates from stoichiometric. This is manifested by the formation of microrelief on the surface of the inclusion of ledeburitic cementite, in which the layered structure within a single monocrystal of cementite has practically a single preferred direction. The development of microrelief and the formation of baikovite have much in common.Type of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsType of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesStaff View
ISSN: 1573-8973Source: Springer Online Journal Archives 1860-2000Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsNotes: Abstract Extensive use of die casting is limited by the short operating life of molds with cyclically changing temperature and stresses. As a result of this action there is thermal fatigue failure of the operating surface layer of a mold. This article considers features of the thermal fatigue failure mechanism for steels 3Kh2V8F and 4Kh5MFS used for mold manufacture.Type of Medium: Electronic ResourceURL: