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  • 1
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    The method of radioactive tracer for measuring the amount of inorganic nanoparticles in biological samples (2015)
    Institute of Physics
    Details
    Publication Date: 2015-11-06
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics
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  • 2
    Electronic Resource
    Electronic Resource
    About the motion of a heavy flexible string attached to the satellite in the central field of attraction (1972)
    Springer
    Celestial mechanics and dynamical astronomy 6 (1972), S. 268-277 
    Details
    ISSN: 1572-9478
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Abstract The motion of a heavy inextensible flexible string attached to the satellite in the central gravitational field is discussed. It is supposed that the mass of the string is infinitesimally small compared to the mass of the satellite and hence it does not affect the latter's motion. Under the assumption that the satellite moves along the Keplerian elliptical orbit (in particular circular orbit), the relative motion of the string is investigated. It has been shown that the motion of the flexible string is unstable which is stable in the case of a solidified string.
    Notes: Резюме Рассматривается движение системы, состоящей из спутника точечной массы с прикрепленной к нему тяжелой, нерастяжимой, гибкой нитью в центральном поле тяготения. Предполагается, что масса нити пренебрежимо мала по сравнению с массой спутника и не оказывает влияния на движение спутника. Исследуется относительное движение нити в предположении, что спутник движется по кеплеровской эллиптической орбите/в частности, круговой/. Показано, что может оказаться неустойчивым то движение гибкой нити, которое устойчиво в случае затвердевшей нити.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01231471
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  • 3
    Electronic Resource
    Electronic Resource
    On the motion around the centre of mass of a viscously elastic sphere in the restricted elliptic three-body problem (1990)
    Springer
    Celestial mechanics and dynamical astronomy 50 (1990), S. 231-249 
    Details
    ISSN: 1572-9478
    Keywords: Viscoelastic sphere ; conditionally-periodic orbit ; small deformation ; evolution of motions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In the restricted three-body problem we consider the motion of a viscously elastic sphere (planet) with its centre of mass moving in a conditionally-periodic orbit. The approximate equations describing the rotational motion of the sphere in terms of the Andoyer variables are obtained by the method of the separation of motion and averaging; the evolution of the motion is also analysed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00048766
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  • 4
    Electronic Resource
    Electronic Resource
    Method of creating cutoffs in calcareous soils (1972)
    Springer
    Power technology and engineering 6 (1972), S. 631-636 
    Details
    ISSN: 1570-1468
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Conclusions 1. The stabilizing compositions developed on a base of phenolic alcohols (PA) and total shale phenols diluted with ethyl alcohol (PDEA) can stabilize soils with a high carbonate content. The viscosity of the starting materials (PA and PDEA), produced by industry, and of the stabilizing compositions ensure their penetration into low-permeability soils, and the good chemical stability of the stabilized soils in corrosive media provides a long service life of cutoffs created from these materials. 2. Recommendations were drawn up concerning the procedure of injection stabilization of soils and use of the method for solving engineering problems, which are the basis for planning injection operations in the foundations of structures by this method. The Gidrospetsproekt planning institute has approved this method of soil stabilization for use at construction sites. 3. A long service life of the cutoffs is secured by the high corrosion resistance of the PA- and PDEA-base resin, which indicates the economic expediency of using these materials in hydraulic construction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02377795
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  • 5
    Electronic Resource
    Electronic Resource
    Off-centering of Pb and Sn impurities in GeTe induced by strong local stress (1996)
    Springer
    JETP letters 63 (1996), S. 635-638 
    Details
    ISSN: 1090-6487
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Noncentrality of large impurity atoms—Pb and Sn atoms—substituting for Ge atoms in a GeTe lattice has been discovered by means of EXAFS investigations in Ge0.9Pb0.1Te and Ge0.85Sn0.15Te samples. The transition of impurity atoms into a noncentral position under conditions of a strong local stress is explained by the participation of an unshared electron pair from the impurity atoms in the formation of the chemical bond.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.567079
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  • 6
    Electronic Resource
    Electronic Resource
    Instability of DX-like impurity centers in PbTe:Ga at annealing (2000)
    Springer
    Semiconductors 34 (2000), S. 1144-1146 
    Details
    ISSN: 1063-7826
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The kinetics of variation in the resistance of PbTe:Ga single crystals, with their Fermi level pinned within the band gap, during annealing at temperatures of up to 400°C was studied for the first time. It is shown that annealing the crystals for only several minutes at 200–250°C leads to the transformation of the material, which is semi-insulating at low temperatures, into a strongly degenerate semiconductor with a free electron concentration of about 10−18 cm−3. In other words, annealing results in the decomposition of DX-like impurity centers, which account for Fermi level pinning within the PbTe:Ga band gap. The corresponding activation energy is determined. It is found that high-temperature annealing at about 400°C promotes the tendency to a partial recovery of semi-insulating properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1317572
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  • 7
    Electronic Resource
    Electronic Resource
    EXAFS studies of the local environment of lead and selenium atoms in PbTe1−x Sex solid solutions (1999)
    Springer
    Physics of the solid state 41 (1999), S. 1275-1282 
    Details
    ISSN: 1063-7834
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract EXAFS spectroscopy is used to study the local environment of lead and selenium atoms in PbTe1−x Sex solid solutions. In addition to a bimodal distribution of the bond lengths in the first-coordination sphere, an unusually large value of the Debye-Waller factors for the Pb-Pb interatomic distances (second-coordination sphere) and a substantial deviation of this value from Vegard’s law are observed. Monte Carlo calculations show that these observations are related to the complicated structure of the distribution function for Pb-Pb distances. It is found that the number of Se-Se pairs in the second-coordination sphere exceeds the statistical value, which indicates that chemical factors play an important role in the structure of the solid solutions. The contribution of chemical factors to the enthalpy of mixing of the solid solution is estimated (≈0.5 kcal/mole) and this value is shown to be comparable to the deformation contribution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1130981
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  • 8
    Electronic Resource
    Electronic Resource
    Structure and electric properties of InTe1-x Sex,In1-x GaxTe, and In1-x Tlx Te solid solutions (2000)
    Springer
    Crystallography reports 45 (2000), S. 555-559 
    Details
    ISSN: 1063-7745
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The local environment of Ga, Tl, and Se atoms in InTe-based solid solutions have been studied by the method of EXAFS spectroscopy. It is shown that these atoms can be regarded as substitutional impurities occupying the In(1), In (2), and Te positions in the InTe structure. Electric measurements showed that the In1-x GaxTe and InTe1-x Sex solid solutions are semiconductors at x 〉 0.24 and x 〉 0.15, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1306560
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  • 9
    Electronic Resource
    Electronic Resource
    CO2 efflux by rapid decomposition of low molecular organic substances in soils (1998)
    Springer
    Sciences of soils 3 (1998), S. 11-22 
    Details
    ISSN: 1432-9492
    Keywords: Glucose ; Glucose ; Decomposition kinetics ; Modelling ; Microbial soil biomass ; CO2 ; 14C
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Decomposition rates of the [2-14C]-glucose and [2-14C]-glycine in four different soils of the long-term field trial of Moscow were investigated in a 3-months laboratory experiment in which 14CO2 respiration was measured. A model with three decomposition components and two distribution parameters was developed and validated with the data of the experiment. The decay rate constants of free [2-14C]-glucose (4–32 day-1) were slower than those of [2-14C]-glycine (16–44 day-1). The calculated use efficiency for microbial biosynthesis of the second carbon atom was 47% for glucose and 31% for glycine. The potential half-life of labelled carbon in the microbial soil biomass ranged from 0.6 to 4.4 days, depending on the soil type and the initial amount of added substrate. The calculated total utilisation of carbon by the soil biomass from glycine was about 2–5 times lower than that of glucose. The modelled 14C incorporation into the microbial soil biomass reached its maximum on the first day of the incubation experiment and did not exceed 22% of the 14C input. Both of the investigated substances decomposed most rapidly in the soil samples from sites that have not being fertilised with organic or mineral fertilisers during an 81-years period.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10112-998-0002-2
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  • 10
    Electronic Resource
    Electronic Resource
    Catalytic method for modifying the surface of pyrolytic graphite (1994)
    Springer
    Russian chemical bulletin 43 (1994), S. 1128-1131 
    Details
    ISSN: 1573-9171
    Keywords: pyrolytic graphite ; scanning tunneling microscopy (STM) ; modification ; catalysis ; defects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A new method for chemically modifying highly oriented pyrolytic graphite based on the catalytic oxidation of the surface with platinum as the catalyst is proposed. The method makes it possible only to modify the outer layer of the crystalline lattice without destroying it. As a result, a great number of “point” defects appear on the outer surface of the crystal, which are uniformly distributed on the surface with high density.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00698228
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