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71.
A. A. Aghekyan G. G. Mkryan A. S. Tsatinyan O. S. Noravyan G. V. Gasparyan 《Russian Journal of Organic Chemistry》2016,52(2):209-213
Reaction of 2,2-dimethyl-2-(p-tolyl)ethyl-, 1-p-tolylcyclopenthylmethyl- and 4-(p-tolyl)tetrahydro-2Н-pyran-4-ylmethylamines with phenoxymethyloxiranes substituted in the aromatic ring afforded new aryloxypropanolamines, some of which show moderate adrenoblocking activity. 相似文献
72.
F. V. Gasparyan A. H. Arakelyan H. D. Khondkaryan 《Journal of Contemporary Physics (Armenian Academy of Sciences)》2016,51(4):345-349
The dark and photo current–voltage characteristics (CVC), the absorption spectrum and the photosensitivity of the field effect transistor based on the silicon nanowires have been investigated. The spectral dependences of the photocurrent have been obtained. It is shown that the absorption capacity of the silicon nanowire is shifted to the shorter wavelengths. In contrast to the bulk silicon, the photocurrent and the photosensitivity rise at room temperature and have the record high values in the ultraviolet region. It is proposed to use the field-effect transistors based on the silicon nanowires operating at the room temperature as the highly-sensitive detectors for the ultraviolet spectral region. 相似文献
73.
L. G. Gasparyan V. P. Mkrtchyan T. K. Dadalyan 《Journal of Contemporary Physics (Armenian Academy of Sciences)》2017,52(3):271-275
The influence of external electric field on the anisotropy of a layer of nematic liquid crystal (NLC) was investigated by means of X-Ray interferometric method. It was shown that in Xray range of the spectrum NLC E7 is a positive anisotropic medium. The decrements of a layer of NLC subjected to the electric field were calculated. As a result of reorientation of NLC molecules perpendicular to the cell substrate, the decrements prove equal for cases when the optical axis of a sample was initially perpendicular or parallel to the X-ray beam polarization vector. 相似文献
74.
Verma Ashukumar Modi Krunal Dey Shuvankar Kongor Anita Panchal Manthan Vora Manoj Panjwani Falak Jain VK. 《Journal of fluorescence》2022,32(2):637-645
Journal of Fluorescence - Herein, a novel N-(4-(tert-butyl)-phenyl)-2-chloroacetamide functionalized thiacalix[4]arene architecture, viz TCAN2PA has been synthesized and the sensing behaviour... 相似文献
75.
M. V. Simonyan L. S. Grigoryan A. G. Gasparyan E. G. Sharoyan 《Crystal Research and Technology》1984,19(4):441-446
An influence of temperature gradient, inert gas pressure and pulling rate on the growth parameters of β-phthalocyanine single crystals grown in the closed ampoules is investigated. The morphology and structure — sensitive properties of β-CuPc crystals grown under different conditions are compared. 相似文献
76.
V. K. Gasparyan 《Journal of fluorescence》2014,24(5):1433-1438
Effects of various factors on synthesis and fluorescent properties of CdSe quantum dots were studied. It was shown that variation of pH, stabilizer and concentration of precursors brings to obtaining of quantum dots with various fluorescent properties. The nanoparticles prepared were conjugated with rabbit antibodies to C-Reactive protein and C-Reactive protein for competitive immunoassay for determination of CRP. It was shown that interaction of these dots as a result of antigen-antibody reaction brings to resonance energy transfer and these changes in fluorescence spectra correlate with concentration of CRP. This approach permits to determine CRP in range between 4–100 ng 相似文献
77.
Ovakimyan M. Zh. Gasparyan G. Ts. Poghosyan A. S. Bichakhchyan A. S. Derdzyan L. V. Stepanyan H. M. Muradyan R. E. 《Russian Journal of General Chemistry》2021,91(8):1494-1498
Russian Journal of General Chemistry - The reactions of (1-bromoethenyl)(diphenyl)phosphine oxide with NH-, OH-, SH-nucleophiles were studied. The reaction of phosphine oxide with alcohols and... 相似文献
78.
A. O. Martirosyan V. E. Hovhanesyan S. P. Gasparyan S. S. Mamayan R. K. Ghazaryan V. N. Madakyan 《Chemistry of Heterocyclic Compounds》2006,42(2):180-183
A selective method was developed for the reduction of functional groups with sodium borohydride using complexes of CoCl2 and CuCl2 with triethylbenzylammonium chloride and cobalt and copper mesotetra[4-(2-hydroxyethyl)pyridyl]porphyrinates as catalysts.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 205–208, February, 2006. 相似文献
79.
G. A. Gevorgyan N. K. Gasparyan A. G. Agababyan G. A. Panosyan 《Russian Journal of Organic Chemistry》2008,44(9):1348-1351
1-Aryl-3-piperidino(morpholino)-2-phenylpropan-1-ols were synthesized by reduction of the corresponding 1-aryl-3-piperidino(morpholino)-2-phenylpropan-1-ones with lithium tetrahydridoaluminate, and the products were separated into erythro and threo isomers by fractional crystallization. Their relative configuration and diastereoisomeric purity was determined by 1H NMR spectroscopy. 相似文献
80.
K. A. Moshkunov I. V. Vizgalov V. I. Burlaka Yu. M. Gasparyan A. A. Pisarev 《Bulletin of the Russian Academy of Sciences: Physics》2012,76(6):716-720
Lithium targets are exposed to deuterium plasma with a fluence of 1022–1023 D/m2 and then heated at a rate of about 5°C/s up to 600°C. Intense deuterium release starts at 400°C. Based on the TDS measurements, it is assumed that deuterium in Li exists in two equilibrium phases: a solid solution and LiD precipitates that start to actively decompose above 400°C. 相似文献