Výsledky vyhledávání - "A O Vardanyan"

Synthesis of N-Substituted Derivatives of 3-(1,4-Benzodioxan-2-yl)-4-phenyl-1,2,4-triazole-5(4H)-thiones

Autor: Henry A. Panosyan, A. A. Aghekyan, A. S. Avagyan, A. B. Sargsyan, S. O. Vardanyan

Publikováno v: Russian Journal of Organic Chemistry. 57:1068-1072

The addition of 5-(1,4-benzodioxan-2-yl)-4-phenyl-4H-1,2,4-triazole-3-thiol to the C=C double bond of acrylonitrile, acrylamide, and ethyl acrylate afforded 3-[3-(1,4-benzodioxan-2-yl)-4-phenyl-5-sulfanylidene-4,5-dihydro-1H-1,2,4-triazol-1-yl]propan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a0073ddb3f6cd008618fe90ed3909710
https://doi.org/10.1134/s107042802107006x

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Synthesis and Some Transformations of 5-(1,4-Benzodioxan-2-yl)-4-phenyl-4H-1,2,4-triazole-3-thiol

Autor: A. B. Sargsyan, S. A. Harutyunyan, A. S. Avagyan, A. A. Aghekyan, S. O. Vardanyan, H. V. Gasparyan

Publikováno v: Russian Journal of Organic Chemistry. 56:436-439

The title compound was synthesized by reaction of 1,4-benzodioxane-2-carbohydrazide with phenyl isothiocyanate, followed by cyclization of the N-phenylthiosemicarbazide thus formed in the presence of alkali. 5-(1,4-Benzodioxan-2-yl)-4-phenyl-4H-1,2,4

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::209d56f8a977dbb95912ff9ba84ba0ce
https://doi.org/10.1134/s1070428020030112

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Synthesis and Antibacterial Activity of New Oxadiazolylbenzodioxane Derivatives

Autor: A. A. Aghekyan, A. B. Sargsyan, H. M. Stepanyan, A. S. Avagyan, R. V. Paronikyan, Henry A. Panosyan, R. E. Muradyan, S. O. Vardanyan

Publikováno v: Russian Journal of Organic Chemistry. 56:385-389

Reactions of 5-(1,4-benzodioxan-2-yl)-1,3,4-oxadiazole-2-thiol with N-substituted chloroacetamides gave a series of the corresponding derivatives at the sulfur atom. Addition reactions of 5-(1,4-benzodioxan-2-yl)-1,3,4-oxadiazole-2-thiol to the C=C d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5088f9e19c995cee9672c836a38f9b09
https://doi.org/10.1134/s1070428020030033

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Synthesis of New Derivatives of 4-(1,4-Benzodioxan-2-yl)thiophene

Autor: A. A. Aghekyan, A. S. Avagyan, S. O. Vardanyan, H. V. Gasparyan, S. A. Harutyunyan

Publikováno v: Russian Journal of Organic Chemistry. 55:598-601

thyl 2-amino-4-(1,4-benzodioxan-2-yl)thiophene-3-carboxylate was synthesized by the Gewald reaction of 2-acetyl-1,4-benzodioxane with ethyl 2-cyanoacetate and sulfur in the presence of diethylamine. The product was used to synthesize a series of amid

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::673f91b4fe5b79483b26037904337eb5
https://doi.org/10.1134/s1070428019050038

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Low-Temperature Transport Properties of Lanthanum Hexaboride La1–xCexB6 Single Crystals

Autor: Vahan Nikoghosyan, S. R. Harutyunyan, V. O. Vardanyan

Publikováno v: Journal of Contemporary Physics (Armenian Academy of Sciences). 53:234-241

Resistivity (ρ), thermal conductivity (k) and Seebeck coefficient (S) of La1–xCexB6 single crystals with various concentrations of cerium Ce ions was measured in a wide temperature range 3−300 K. The obtained data were analyzed in the framework

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::865fd4afa7d6dc68e5604d1290cafc8e
https://doi.org/10.3103/s1068337218030088

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Correlational Nonlinear Optical Femtosecond Laser Profilometer with Micrometer Spatial Resolution

Autor: G. D. Hovhannisyan, S. R. Melikyan, D. L. Hovhannisyan, K. B. Savkin, A. O. Vardanyan, S. V. Tikhomirov

Publikováno v: Measurement Techniques. 60:794-800

A new femtosecond correlation nonlinear optical profilometer with micron spatial resolution is proposed, in order to increase the measurement accuracy of the heterogeneity profile of a surface at a distance up to 1 km. The principle of operation of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d3498ba17cd6a4b842fb9d06ec76baef
https://doi.org/10.1007/s11018-017-1272-6

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Synthesis and investigation of reentrant oxide superconductors

Autor: V. O. Vardanyan, V. S. Kuzanyan, Armen S. Kuzanyan

Publikováno v: Journal of Contemporary Physics (Armenian Academy of Sciences). 52:138-146

The conditions for the occurrence of reentrant superconductivity in granular superconductors are studied. The parameters of synthesis of the ceramic samples of CaLaBaCu3O x , SrLaBaCu3O x and YBa2–x Sr x Cu3O y Se z compositions, the results of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a0d1e214cffe835d320ede3c13d1ac2
https://doi.org/10.3103/s1068337217020074

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Difference-frequency generation in the field of a few-cycle laser pulse propagating in a GaAs crystal with a domain structure

Autor: Aleksandr O Vardanyan, David L Oganesyan, G D Oganesyan

Publikováno v: Quantum Electronics. 43:519-525

Difference-frequency generation in a GaAs crystal with a periodic domain structure in the field of a few-cycle laser pulse is considered for the case of weakly pronounced material dispersion. The straight-line method is used to solve numerically the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::243535f2c63cc2ba2c56ba205bb6ad01
https://doi.org/10.1070/qe2013v043n06abeh014735

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