A microfluorimetric investigation of the dynamics accumulation of a porphyrin type photosensitizer in normal and malignant cells
A microfluorimetric investigation of the dynamics accumulation of a porphyrin type photosensitizer in normal and malignant cells
Z.A. Khurshilova, M.I. Leikina, L.L. Litinskaya, E.B. Chernyaeva
Intercellular fluorescence of a photosensitizer-dye (hematoporphyrin) with its bonding with normal and malignant cells is investigated. The spatial distribution of the dye in a cell and the dependence of the intensity of the fluorescence of cells of the culture on curing time in the dye are studied, along with the effect of change in the acidity of the medium on the penetration of the porphyrin into the cell.
Show AbstractExtrinsic electroluminescence of V-doped GaAs
Extrinsic electroluminescence of V-doped GaAs
V.S. Vavilov, V.A. Morozova, O.V. Rychkova
Extrinsic electroluminescence in GaAs: V is discovered at $\epsilon >7\cdot 10^3$ V/cm and T = 80-300 K. A close correspondence of the form of the bands of the electroluminescence to the absorption spectra in the range $h\nu \sim 1,1$ eV and the photoluminescence spectrum in the range $h\nu \sim 0,7$ eV is observed. It is shown that electroluminescence in the range of $\sim$0,7 eV is caused by intracenter transitions of the $V^0$ atoms, while in the $\sim$1.1 range it is caused by transitions of the $V^-$ atoms.
Show AbstractDescribing the relaxation process for imbalanced vacancies created by radiation
Describing the relaxation process for imbalanced vacancies created by radiation
G.S. Zhdanov, K.P. Gurov, T.V. Kryukova
Solution is acquired for the Nazarov-Gurov equations for mutual diffusion with consideration of imbalanced vacancies for a special form of their initial distribution. The evolution of the curves of distribution of excess vacancies and deviation from the balanced value of the concentration of atoms of the A variety is shown for different parameter values.
Show AbstractDevelopment of optical principles of diffraction of X-rays in continuously layered crystals
Development of optical principles of diffraction of X-rays in continuously layered crystals
A.V. Kolpakov, V.I. Punegov
Optical principles are used to analyze diffraction of X-rays in crystals with a constant deformation gradient. The physical interpretation of the scattering of the X-rays is based on construction of phase layers, whose interferential interaction explains the structure of the curves of diffraction reflection from crystals with a constant deformation gradient. This model may be used to build a starting approximation for solving inverse problems of restoring the structure of distorted near-surface layers.
Show AbstractStudy of the patterns of movement of an ion beam in the near-surface layer of a monocrystal using a secondary ion-electron emission method
Study of the patterns of movement of an ion beam in the near-surface layer of a monocrystal using a secondary ion-electron emission method
B.A. Brusilovskii
The angular relations of the coefficient of ion-electron emission of a copper monocrystal are studied with bombardment of a target near a series of directions and planes with low indices. It is established that even at the discharge depth of the secondary electrons there is a planar order to the target.
Show AbstractAn investigation of antimony and bismuth monocrystals using a method for Rayleigh scattering of M$\stackrel{..}{o}$ssbauer radiation
An investigation of antimony and bismuth monocrystals using a method for Rayleigh scattering of M$\stackrel{..}{o}$ssbauer radiation
A.A. Opalenko, A.A. Kiselev, I.A. Avenarius
A method for Rayleigh scattering of M$\stackrel{..}{o}$ssbauer radiation is used to measure the anisotropic Debye-Waller factors for Sb and Bi monocrystals. The acquired results beneficially differ from the results of X-ray and neutron diffraction experiments thanks to the absence of a contribution from heat diffusion scattering. The results may be used to develop dynamic models of Sb and Bi crystals.
Show AbstractStructural characteristics and properties of near-boundary fields of amorphous hydrated silicon
Structural characteristics and properties of near-boundary fields of amorphous hydrated silicon
Yu.A. Zarif'yants, V.O. Abramov, Yu.L. Gal'chenko, A.S. Avilov, G.M. Chukicheva
A sharp reduction is discovered in the intensity of photoluminescence in fields of a-Si:H films bordering on a metal. Electron diffraction is investigated to explain this effect. Correct normalization of the interferential function is used to calculate the radial functions of distribution. It was found that the samples differ in terms of the coordination numbers and the radii of the first coordinational sphere. Differences in the spectrum of the density of states of the a-Si:H layers on different substrates are associated with this.
Show AbstractIsostructural ordering in a decahydrate of aluminomethylammonium alums
Isostructural ordering in a decahydrate of aluminomethylammonium alums
N.D. Gavrilova, Yu.P. Kozlova
Measurements are performed of the temperature relations of the dielectric and pyroelectric properties of crystals of decahydrates of aluminomethylammonium alums near a temperature of 145 K. Based on the acquired results a conclusion is drawn about the existence at 145.3 K of an isostructural dipole ordering which may be associated with ordering of the $H_2O$ molecules or of the $CH_3NH_3$ groups.
Show AbstractCalculating deeply inelastic diagram asymptotics with vector mesons in an exchange channel in a range of low $х$ in a Feynman calibration
Calculating deeply inelastic diagram asymptotics with vector mesons in an exchange channel in a range of low $х$ in a Feynman calibration
N.I. Usyukina
Twice logarithmic asymptotics of diagrams from the perturbation theory with vector mesons are examined using integral representations and Mellin expansions in an exchange channel in a deeply inelastic range at low values of $x$ in a Feynman calibration.
Show AbstractOn the criterion of resonance overlap and deformation of separatrices
On the criterion of resonance overlap and deformation of separatrices
P.V. Elyutin
For two-dimensional images which preserve a surface, a method is indicated for building the skeleton of the separatrix which does not use the smallness of nonlinearity. It is shown in an example of a standard image that near the boundary of global stochasticity the deformation of the separatrix is comparable with the width of the stochastic layer and is substantive in the criterion of resonance overlap. A two resonance model, for which an above stochasticity threshold evaluation is acquired which is in agreement with the results of computer experiments, is also examined.
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