Pavel Dallakian

Pavel Dallakian
Medical University of Vienna | MedUni Vienna

PhD

About

23
Publications
2,521
Reads
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147
Citations
Citations since 2016
3 Research Items
21 Citations
20162017201820192020202120220123456
20162017201820192020202120220123456
20162017201820192020202120220123456
20162017201820192020202120220123456

Publications

Publications (23)
Poster
Full-text available
Abstracts of the poster at the 5th International Annual Scientific and Practical Conference, May 30-31, 2019, Moscow Тезисы постера на 5-ой Международной ежегодной научно-практической конференции, 30-31 мая 2019 г., Москва
Conference Paper
on-course® [1] has proven to be a helpful tool for career development in biomedical sciences. The structured data gathered in on-course® allows us to investigate the pan-European biomedical education and training landscape. Here we present how, by means of an API (application programming interface), on-course® data can be visualised in statistical...
Data
FlaME - Flash Molecular Editor. Platform independent SWF application file
Article
Full-text available
So far, there have been no Flash-based web tools available for chemical structure input. The authors herein present a feasibility study, aiming at the development of a compact and easy-to-use 2D structure editor, using Adobe's Flash technology and its programming language, ActionScript. As a reference model application from the Java world, we selec...
Article
Full-text available
This paper describes a method for off-line coupling of thin-layer chromatography (TLC) and electron-impact ionization mass spectrometry (EIMS) which is well suited for routine forensic and toxicological investigations of a large number of samples. The advantages and drawbacks of this approach are discussed. Several TLC systems for 493 compounds of...
Article
Bacterial peptides frequently contain both d- and l-amino acids, proteinogenic as well as uncommon ones. Using the example of pyoverdins, iron chelating chromopeptides of the bacterial genus Pseudomonas, the mass spectrometric assignment of enantiomers of the amino acids in the form of their N(O, S)-perfluoroacyl amino acid alkyl esters after GC se...
Article
The photochemistry of three N-acetoacetyl α-amino acid (valine, tert-leucine, isoleucine) methyl esters was investigated. The products after UV irradiation in acetonitrile at 300 nm (direct excitation) were analyzed by gas chromatography coupled with chemical ionization mass spectrometry. In all cases a complex product mixture was found as the resu...
Article
The synthesis and mass spectrometric (MS) and pyrolytic behavior of three 3,5-aryl-substituted isoxazolinyl acetophenones, 2-[4,5-dihydro-5-(4-methoxyphenyl)-3-phenyl-5-isoxazolyl]-1-phenylethanone (I), 2-[4,5-dihydro-5-(4-methoxyphenyl)-3-phenyl-5-isoxazolyl]-1-(4-methylphenyl)ethanone (II) and 2-[4,5-dihydro-5-(4-methoxyphenyl)-3-(4-methylphenyl)...
Article
N-Phthaloyl cysteine derivatives 1a-d were photochemically transformed by elimination, decarboxylation, and via electron transfer cyclization to the products 2,3,4 and 6–8. The spin selectivities of singlet and triplet pathways were investigated in acetonitrile and acetone. The excited singlets were prone to elimination and γ-H abstractions (e.g. f...
Article
The application and advantages of positive chemical ionization with methane [CI(CH4)] for gas chromatography-mass spectrometry (GC-MS) of perfluoroacyl amino acid alkyl esters are discussed. All investigated amino acids show [M + H]+, [M + C2H5]+, and [(M + H) − C3H6]+. By a comparison of the electron ionization (EI) and CI(CH4) mass spectra the an...
Article
The essential oil from guarana [Paullinia cupana H.B.K. var. sorbilis (Mart.) Ducke] was analysed. Nine components were identified, namely (2) methylbenzenes, (1) cyclic monoterpene and (2) cyclic sesquiterpene hydrocarbons, (2) methoxyphenylpropenes and (2) alkylphenol derivatives. The alleged psychoactivity of the essential oil is presumably due...
Article
Full-text available
Gas chromatographic-mass spectrometric (GC-MS) analyses of amphetamine and methamphetamine with chemical ionization (CI) (NH3) and electron impact (EI) were compared after solid-phase extraction from urine. The optimal CI (NH3) conditions for amphetamines were selected; the CI mass spectra of amphetamine, methamphetamine, methylenedioxyamphetamine...
Article
P. B. Dallakyan and A. V. Kiselev, COMPARATIVE ADSORPTION STUDY OF S-CONTAINING AND SE-CONTAINING ORGANIC-COMPOUNDS ON THE GRAPHITIZED THERMAL CARBON BLACK, Zh. Fiz. Khim., 1985, 59, 1278 [Russ. J. Phys. Chem., 1985, 59 (Engl. Transl.)].

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Projects

Project (1)
Project
The web-based list of the pharmaceutical substances with structural and common analytical data of the forensic and analytical interests. Visit the JS version for desktop - https://toxlab.wincept.eu/app/frames.html and mobile devices - https://toxlab.wincept.eu/app/