Zobrazeno 1 - 10
of 228
pro vyhledávání: '"Gheorghe DUCA"'
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 19, Iss 1, Pp 29-39 (2024)
The intricate dynamics of antioxidant interactions holds promise for innovating formulations to reduce patient antioxidants doses and prolong efficacy, these aspects being also important for other industrial applications, such as food preservation. I
Externí odkaz:
https://doaj.org/article/d7839dad59234f9b83bbe64ac0bd6efd
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 18, Iss 1, Pp 38-45 (2023)
This paper is dedicated to the synthesis of a copolymer with reducing properties obtained by functionalizing chitosan with quercetin and determining the antioxidant activity of the derivatives obtained depending on the molar mass of the polymer. For
Externí odkaz:
https://doaj.org/article/f1ced2281ab14ef499288e8922a7b7cf
Autor:
Serghei Pogrebnoi, Nicolae Eremia, Dmitri Bilan, Lucian Lupascu, Natalia Bolocan, Gheorghe Duca, Svetlana Armasu, Dumitru Terteac, Vitalie Cebanu, Serghei Tincu, Alexandru Znagovan, Iulia Neicovcena, Olga Coseleva, Valerina Slanina, Fliur Macaev
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 18, Iss 1, Pp 46-51 (2023)
The chemical composition, antioxidant and antimicrobial activity of propolis ethanolic and water-ethanolic extracts from the central zone of Moldova have been investigated by GC-MS and liquid chromatography. There were found 20 amino acids, of which
Externí odkaz:
https://doaj.org/article/ac0c1cb9acd443d7aade51a3dd4441b1
Autor:
Marina Zveaghintseva, Eugenia Stingaci, Serghei Pogrebnoi, Lucian Lupascu, Alic Barba, Gheorghe Duca, Vladimir Valica, Livia Uncu, Victor Kravtsov, Dumitru Terteac, Alexandr Brinzan, Fliur Macaev
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 17, Iss 2, Pp 109-119 (2022)
In this work new methods to obtain complexes from β-cyclodextrin and dehydroabietic acid with chromenol-triazol hybrid with the sizes limits of approximately 0.1-250 μm are reported. Kneading, co-evaporation and co-precipitation for the resolution
Externí odkaz:
https://doaj.org/article/74cb591fa63a4507a02a49989420c7d5
Autor:
Viacheslav Shvydkiy, Sergey Dolgov, Alexander Dubovik, Mikhail Kozlov, Alisa Povkh, Lyudmila Shishkina, Gheorghe Duca
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 17, Iss 2, Pp 35-42 (2022)
This paper presents a study of the hydrochemical composition and physicochemical properties of natural water samples from various sources in the Voronezh and Moscow regions. Two model systems are proposed for assessing the state of the aquatic enviro
Externí odkaz:
https://doaj.org/article/4c4b51683344417da7adf18c01441ab1
Autor:
Gheorghe ȚÎBÎRNĂ, Gheorghe DUCA, Eva GUDUMAC, Consuela Norina FORNA, Viorica VARODI, Andrei ȚÎBÎRNĂ, Nicolae GLADUN, Vladimir HOTINEANU, Adrian HOTINEANU
Publikováno v:
Buletinul Academiei de Ştiinţe a Moldovei: Ştiinţe Medicale, Vol 73, Iss 2, Pp 18-26 (2022)
Ideea lucrării vine din programul științific de stat sub denumirea „Chirurgia modernă personalizată în diagnosticul și tratamentul complex al tumorilor la copii”.Pe data 24-25 martie 2022 la Academia de Științe a Moldovei, s-a desfășur
Externí odkaz:
https://doaj.org/article/b37a37f130384123befad9133848d430
Autor:
Gheorghe Duca
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 16, Iss 2, Pp 28-45 (2021)
This review paper is focused on the detailed consideration of the structure, properties and reactions of H2O2. The paper highlights the importance of revealing these processes’ mechanisms, since they have been insufficiently studied so far, or the
Externí odkaz:
https://doaj.org/article/5e1e5329a4054b538ca85d229a40afd9
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 16, Iss 1, Pp 46-59 (2021)
The photochemical transformations of thioglycolic acid using model systems was studied by varying the irradiation sources and the kinetic parameters were determined. It was found that thioglycolic acid undergoes destruction on induced photolysis in t
Externí odkaz:
https://doaj.org/article/f23a413d44804618853cd3c92b90ec65
Autor:
Olga Morarescu, Marionela Traistari, Alic Barba, Gheorghe Duca, Nicon Ungur, Veaceslav Kulcițki
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 16, Iss 1, Pp 99-104 (2021)
The selective one-step synthesis of 13-epi-manoyl oxide is reported based on a low-temperature superacidic cyclization of sclareol. The reaction conditions have been finely tuned in order to achieve a 9:1 ratio between epimeric oxides in favor of the
Externí odkaz:
https://doaj.org/article/fe9885feccab43f8b2b1936d67131a1f
Publikováno v:
Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry, Vol 14, Iss 1, Pp 47-53 (2019)
It is known, that highly toxic pesticide hexachlorocyclohexane (HCH) is resistant to decomposition and has a long-term accumulating capacity. Nevertheless, it undergoes complete degradation in reactions with hydroxyl radicals in Fenton-like systems.
Externí odkaz:
https://doaj.org/article/b2d667b88a314ed7a33ed7bb9544a7c8