排序方式: 共有55条查询结果,搜索用时 31 毫秒
1.
A. V. Ghazaryan A. Kh. Manaselyan A. A. Kirakosyan 《Journal of Contemporary Physics (Armenian Academy of Sciences)》2010,45(6):269-277
Electronic states in the valence band of a cylindrical ZnSe quantum dot are studied with allowance for the valence band mixing.
Dependences of the wave functions and energy levels on the quantum dot radius are calculated. The influence of a magnetic
field parallel to the quantum dot radius on the energy levels is also considered. 相似文献
2.
Karine A. Eliazyan Aram M. Knyazyan Vergush A. Pivazyan Emma A. Ghazaryan Siranush V. Harutyunyan Aleksandr P. Yengoyan 《Journal of heterocyclic chemistry》2013,50(5):1083-1088
By interaction of N‐methyl(ethyl)‐dithiocarbamate sodium salt with 3‐chloro‐pentane‐2,4‐dion the 1‐(3‐alkyl‐4‐methyl‐2‐thioxo‐2,3‐dihydro‐thiazol‐5‐yl)‐ethanones 1 , 2 and corresponding oximes 7 , 8 were synthesized. On the basis of the mentioned compounds hydrazono ( 3 , 4 ), ureayl and thioureayl ( 5 , 6 ) derivatives, substituted oximes ( 9 , 10 ) and azinyl oximes ( 11 , 12 ) were obtained. The structures of synthesized compounds were confirmed by proton nuclear magnetic resonance spectroscopy and elemental analysis. The pesticidal activities of synthesized compounds were studied. Some of the synthesized compounds simultaneously have shown growth stimulant and fungicidal activity. 相似文献
3.
V. N. Margaryan H. G. Ghazaryan 《Journal of Contemporary Mathematical Analysis (Armenian Academy of Sciences)》2008,43(3):157-178
A two-dimensional linear differential operator P(D) = P(D 1, D 2) is called almost hypoelliptic if all derivatives D α P of the characteristic polynomial P(ζ) = P(ζ 1, ζ 2) are estimated by P(ζ). Assuming that {Ω κ = (x 1, x 2) ∈ E 2 : |x 1| < κ, x 2 ∈ R 1}, the paper proves that if the width κ of the strip Ω κ exceeds some C = C(P) > 0, then all solutions {u} of the almost hypoelliptic equation P(D)u = 0 in a Sobolev space are infinitely smooth functions with respect to x 1. 相似文献
4.
K.B. Ghazaryan 《Journal of sound and vibration》2011,330(26):6456-6466
Within the full system of Maxwell's equations this paper investigates the effects of three kinds of transmission conditions at the interfaces between the laminae of a periodic piezoelectric structure on band gaps of Bloch-Floquet waves propagating oblique to the interfaces. The results that are obtained show that under both electrically shorted and magnetically closed transmission conditions Bloch-Floquet waves exist only at acoustic frequencies. The effects of piezoelectricity on Bloch-Floquet wave band structures are studied at such frequencies. It is shown that for periodic crystal structures with laminae made of identical materials the propagation of Bloch-Floquet waves can occur under electrically shorted interface conditions but not under magnetically closed interface conditions.For electrically open interfaces with mechanically smooth contacts the dynamic setting of the problem provides solutions only for photonic crystals. In this case the piezoelectricity has no effect on band gaps. 相似文献
5.
Anna Ghazaryan Yuri Latushkin Stephen Schecter Aparecido J. de Souza 《Archive for Rational Mechanics and Analysis》2010,198(3):981-1030
For gasless combustion in a one-dimensional solid, we show a type of nonlinear stability of the physical combustion front:
if a perturbation of the front is small in both a spatially uniform norm and an exponentially weighted norm, then the perturbation
stays small in the spatially uniform norm and decays in the exponentially weighted norm, provided the linearized operator
has no eigenvalues in the right half-plane other than zero. Using the Evans function, we show that the zero eigenvalue must
be simple. Factors that complicate the analysis are: (1) the linearized operator is not sectorial, and (2) the linearized
operator has good spectral properties only when the weighted norm is used, but then the nonlinear term is not Lipschitz. The
result is nevertheless physically natural. To prove it, we first show that when the weighted norm is used, the semigroup generated
by the linearized operator decays on a subspace complementary to the operator’s kernel, by showing that it is a compact perturbation
of the semigroup generated by a more easily analyzed triangular operator. We then use this result to help establish that solutions
stay small in the spatially uniform norm, which in turn helps establish nonlinear convergence in the weighted norm. 相似文献
6.
Petrosyan AM Ghazaryan VV Fleck M 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2011,79(5):2020-2022
It is argued that the infrared spectrum of L-lysine sulfate (L-Lys2+·SO4(2-)) published by Krishnakumar et al. [V. Krishnakumar, S. Manohar, R. Nagalakshmi, Spectrochim. Acta A75 (2010) 1394-1397] cannot belong to this crystal species. To confirm this, crystals (L-Lys2+·SO4(2-)) were synthesized and identified by XRD, and ATR FTIR and Raman spectra of L-Lys2+·SO4(2-) were registered and are discussed. 相似文献
7.
JETP Letters - We present results of numerical investigations of high-order wave mixing/harmonic generation (HWM/HHG) with many-body interaction processes derived by a strong two-frequency circular... 相似文献
8.
S. A. Ambartsumian M. V. Belubekyan K. B. Ghazaryan 《Journal of Mathematical Sciences》2009,162(2):180-186
We consider the problem of axial tension of a circular inhomogeneous cylindrical shell by longitudinal forces. The determination
of the stress-strain state of the shell is performed on the basis of a refined theory. The possibility of losing local stability
under axial tension is discussed. 相似文献
9.
Ivanov Yu. B. Soldatov A. A. Pakhomov A. V. Arkhipov M. V. Rosanov N. N. Arkhipov R. M. Sturman B. Podivilov E. Arbuzov A. Bondarenko S. Dydyshka Ya. Kalinovskaya L. Rumyantsev L. Sadykov R. Yermolchyk V. Yermolchyk Yu. Kats E. I. Shilpashree S. P. Shastri Venkataramana Zakharov B. G. Galakhov V. R. Udintseva M. S. Naumov S. V. Shamin S. N. Gizhevskii B. A. Valba O. Gorsky A. Gavryushkin P. N. Martirosyan N. S. Rashchenko S. V. Sagatova D. N. Sagatov N. E. Semerikova A. I. Fedotenko T. M. Litasov K. D. Avchyan B. R. Ghazaryan A. G. Sargsyan K. A. Sedrakian Kh. V. 《JETP Letters》2022,116(5):342-345
JETP Letters - An Erratum to this paper has been published: https://doi.org/10.1134/S0021364022330013 相似文献
10.