No. 4, Avril 2008

Tome 53, No. 4, Avril 2008

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1. Florea DUMITRAŞCU, Constantin DRĂGHICI, Barbu MIU, Miron T. CĂPROIU, Loredana BARBU and Dan G. DUMITRESCU

A novel approach for the synthesis of pyrrolo[1,2-b]pyridazine derivatives

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Key words: pyridazinium N-ylides, 1,3-dipolar cycloaddition, tetrakispyridine cobalt (II) dichromate, pyrrolo[1,2-b]pyridazine

2. Christina ZĂLARU, Florea DUMITRAŞCU, Isabela ŢÂRCOMNICU and Marian NEAŢĂ

New pyrazole derivatives with potential local anesthetic activity

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Key words: pyrazoles, 2′-iodoacetanilides, N-alkylation, anesthetic

3. Ioana M. C. IENAŞCU, Alfa X. LUPEA, Iuliana M. POPESCU, Cristina MOŞOARCĂ and Alina D. ZAMFIR

Synthesis and characterization of some novel 2- hydroxy-N-(2-trifluoromethyl-phenyl)-benzamide derivatives

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Key words: 2-hydroxy-N-(2-trifluoromethyl-phenyl)-benzamide derivatives, ethyl esters, hydrazides, hydrazones, salicylanilide-O-substituted

4. Octavian STAICU, Valentin MUNTEANU, Domnina RAZUS and Dumitru OANCEA

Overall kinetics of isobutene catalytic combustion on a platinum wire at high temperatures

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Key words: catalytic combustion, heat flow rate, overall reaction order, overall activation energy

5. Cătălin LISA, Silvia CURTEANU, Victor BULACOVSCHI and Daniela APREUTESEI

Artificial intelligence methods applied to prediction of the liquid crystalline behavior of some ferrocene
derivatives.

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Key words: modular neural networks, liquid crystalline behavior prediction, ferrocene derivatives

6. Gabriela Elena BADEA and Teodora BADEA

Electrochemical behaviour of nickel in aqueous acetic acid solutions.

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Key words: nickel, acetic acid solutions, passivation, corrosion

7. Marius SOCOL, Laurian VLASE, Ioan BÂLDEA, Sorin LEUCUŢA and Anca CIURTE

A new graphical method to solving homogenous differential equation systems used in pharmacokinetics analysis

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Key words: flow graph, linear homogenous differential equation systems, pharmacokinetic analysis

8. Erdal DINÇ, Dumitru BĂLEANU and Ferdi TOKAR

Simple mathematical resolution for binary mixture of oxfendazole and oxyclozanide in bolus by bivariate and multivariate calibrations based on the linear regression functions.

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Key words: bivariate and multivariate spectral calibrations, simultaneous determination, oxfendazole, dxyclozanide, binary mixture

9. Xue-Tao ZHAO, He-Ping ZHAO, Yuan YUAN and Hong-Wen GAO

Determination of copper at ng mL-1 level in surface water using the electrophilic substitution reaction
between Cu(II) and 3-(3-sulfophenylazo)-6-(4-chloro-2-phosponophen-ylazo)-4,5-
dihydroxynaphthalene-2,7-disulfonic acid-Ca(II) complex.

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Key words: light absorption ratio variation approach, determination of copper, 3-(3-Sulfophenylazo)-6-(4-chloro-2-phosponophenylazo)-4, 5-dihydroxynaphthalene-2, 7-disufonic acid, competitive substitution complexation, spectral correction technique

10. Georgiana VASILE, Andreea MOISE and Elena MIHAILA

Atomic absorption method for determination of antimony in aqueous solutions.

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Key words: antimony determination, atomic absorbtion, hydride technique, in house validation

11. Adriana CĂPITĂNESCU, Claudiu Ştefan TURCULEŢ, Cristian CĂPITĂNESCU, Ion Gh. TĂNASE,
Mirel DRĂGHICI, Emanuel GALATESCU and Gheorghe MANOLE

Assesment of uncertainties in measurement of phospholipase A2 activity from Vipera ammodytes venom.

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Key words: phospholipase assay, uncertainty, venom