| 1. |
- Braun, Tibor, et al.
(författare)
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ON THE MOLECULAR STRUCTURE OF THE CO-AUTHOR NETWORK OF ALEXANDRU T. BALABAN
- 2016
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Ingår i: Revue roumaine de chimie. - 0035-3930. ; 61:4-5, s. 231-238
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Scientometric networks based on the bibliography of Professor Alexandru T. Balaban are analyzed. His position in the topological index research community and the structure of his own co-author network are considered. An analogy is suggested between coauthor networks and molecular structures.
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| 2. |
- Ladiu, Carmen Ioana, et al.
(författare)
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NADH electrocatalytic oxidation at glassy carbon paste electrodes modified with meldola blue adsorbed on acidic alpha-zirconium phosphate
- 2007
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Ingår i: Revue Roumaine de Chimie. - 0035-3930. ; 52:1-2, s. 67-74
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Tidskriftsartikel (refereegranskat)abstract
- The electrochemical behavior and the electrocatalytic activity for the NADH oxidation at glassy carbon paste electrodes (GCPEs) modified with Meldola Blue (MB) adsorbed onto acidic cc-zirconium phosphate (ZP*) have been investigated. Cyclic voltammetry and rotating disc electrode measurements, performed in Tris buffer solution (pH 7) in absence and in presence of different NADH concentrations, showed that: (i) the formal standard potential (E degrees') of NIB was found pH dependent, according to the equation E = E degrees (c)-0.059pH + 0.029log(1 + 10(pH-pKa)), where the best fitting value for pK(a) Was estimated to be 4.3 +/- 0.4; (ii) the best electrocatalytic response was obtained for MB-ZP*-modified GCPEs having a ratio between the glassy carbon powder (Sigradur K) and MB-ZP* of 19:1; (iii) the presence of polyethyleneimine in the paste has a significant beneficial effect on the electrocatalytic activity of the investigated modified electrodes. As a general conclusion, it was stated that the particular features of the MB-ZP*-GCPEs are related to the ZP* crystallinity.
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| 3. |
- Munteanu, Florentina, et al.
(författare)
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Formate dehydrogenase-modified carbon paste electrodes for amperometric detection of formate
- 2006
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Ingår i: Revue Roumaine de Chimie. - 0035-3930. ; 51:1, s. 25-30
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Tidskriftsartikel (refereegranskat)abstract
- A simple and inexpensive amperometric biosensor for formate detection was obtained by immobilization of for-mate dehydrogenase (FDH) on graphite powder, modified with a new phenothiazine derivative (DDDP; 16H, 18H-dibenzo[c,l]-7,9-dithia-16,18-diazapentacene). Two different enzyme environments were used: FDH was adsorbed on DDDP-modified graphite powder in the presence of polyethylenimine (PEI) as well as in its absence. In both cases, when 10 mM NAD(+) were added in the supporting electrolyte (phosphate buffer, pH 7.0), the biosensor developed a response to formate, obeying Michaelis-Menten kinetics with a linear domain up to 3 mM formate. The biosensor sensitivity, calculated as the ratio 1(max)/K-M(aPP), was better in the second case (0.962 mA/M), but the best detection limit (3 AM) was observed in the first case.
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| 4. |
- Muresan, Laura, et al.
(författare)
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Reagentless Amperometric Biosensor For Nadh Detection
- 2009
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Ingår i: Revue Roumaine de Chimie. - 0035-3930. ; 54:9, s. 755-760
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Tidskriftsartikel (refereegranskat)abstract
- A sensitive and selective amperometric biosensor, based on NADH-oxidase (NADOx) working in tandem with horseradish peroxidase (HRP), which is electrically connected to graphite electrode via Os-redox polymer (RP), was developed. Two designs were considered for the biosensor optimization: (i) the first one, [G/HRP-NADOx], exploited the direct electron transfer between HRP and the graphite electrode (G); (ii) the second one, [G/RP-HR-P-NADOx], used R-P as mediator. In both cases the enzyme matrix was cross-linked using poly(ethylenglycol) diglycidyl ether. The biosensors sensitivities, estimated as the slopes of linear ranges from the calibration curves, recorded in a single line flow injection setup, showed that G/RP-HRP-NADOx electrode (1.62 +/- 0.05 mA M-1) presents a higher efficiency than G/HRP-NADOx electrode (0.30 +/- 0.03 mA M-1).
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| 5. |
- Raheel, Ahmad, et al.
(författare)
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SYNTHESIS, ANTIMICROBIAL ACTIVITY, UREASE INHIBITION AND MOLECULAR DOCKING STUDIES OF NEW PROLINE LINKED THIOUREA DERIVATIVES
- 2020
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Ingår i: Revue roumaine de chimie. - : Romanian Academy - Revue Roumaine De Chimie. - 0035-3930. ; 65:9, s. 783-788
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Tidskriftsartikel (refereegranskat)abstract
- A series of new thiourea based carboxylic acids (I-a-I-e) were synthesized and characterized by elemental analysis, FTIR and NMR (H-1 and C-13) spectroscopy. They were preliminary bioassayed for their antibacterial, anifungal and urease inhibition activities. Molecular docking simulations were carried out to determine the probable binding mode of the synthesized compounds. The bioassay results showed that some of titled compounds exhibited encouraging results.
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| 6. |
- Raheel, A., et al.
(författare)
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Synthesis, antimicrobial activity, urease inhibition and molecular docking studies of new proline linked thiourea derivatives
- 2020
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Ingår i: Revue roumaine de chimie. - : Editura Academiei Romane. - 0035-3930. ; 65:9, s. 783-788
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Tidskriftsartikel (refereegranskat)abstract
- A series of new thiourea based carboxylic acids (Ia-Ie) were synthesized and characterized by elemental analysis, FTIR and NMR (1H and 13C) spectroscopy. They were preliminary bioassayed for their antibacterial, anifungal and urease inhibition activities. Molecular docking simulations were carried out to determine the probable binding mode of the synthesized compounds. The bioassay results showed that some of titled compounds exhibited encouraging results.
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