No 5, Mai 2006

Tome 51, No 5, Mai 2006

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1. Violeta TUDOR, Geanina MARIN, Victor KRAVTSOV, Yurii A. SIMONOV, Miguel JULVE, Francesc LLORET and Marius ANDRUH

Supramolecular copper(II) dimers resulted from hydrogen bond interactions: synthesis, crystal structures and magnetic properties

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Key words: copper complexes, 2-aminoethanol, hydrogen bonds, thiocyanato complexes, crystal structure, magnetic properties

2. Andrei ROTARU, Bogdan JURCA, Anca MOANŢĂ, Ion SĂLĂGEANU and Eugen SEGAL

Kinetic study of the thermal decomposition of some aromatic ortho-chlorinated azomonoethers. 1.
Decomposition of 4-[(2-chlorobenzyl)oxi]-4’-triflouromethyl-azobenzene

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Key words: non-isothermal kinetics, “model-free” kinetic methods, azomonoether thermal decomposition

3. Valentin CAREJA, Mircea MRACEC, Ludovic SAYTI, Eugen SISU, Ramona TUDOSE and Zeno SIMON

Comparative study of some ionic bridges implying calcium and magnesium cations by computational
methods

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Key words: ionic bridges, glycan-glycan interactions, dissociation energies, geometry, ab initio 6-31G*

4. Camelia SUCIU, Luminiţa PATRON, Ioana MÎNDRU and Oana CARP

Nickel aluminate spinel by thermal decomposition of polynuclear malate complexes

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Key words: polynuclear malate compound, thermal decomposition, nickel aluminate, nanoparticles, XRD

5. Tudor ROŞU, Maria NEGOIU and Viorel CÂRCU

Mixed-ligand complexes. Ternary copper(II) complexes with aminoacids

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Key words: ternary complexes, amino acids, mixed ligand complexes

6. Laura BANCU, Polina BOUROSH, Ioana JITARU, Yurii A. SIMONOV and Janusz LIPKOWSKI

Synthesis and structural characterization of a new cadmium complex with cytosine

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Key words: cadmium complexes, cytosine cation, X-ray diffraction, tautomeric forms, hydrogen bonds

7. Alexandru CECAL, Anca Irena BALAN, Nicoleta MELNICIUC-PUICA and Karin POPA

Use of β-rays backscattering to study the crystallization process of simple salts from solutions

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Key words: β-ray backscattering, crystal growth, kinetic parameters

8. Michaela Dina STĂNESCU, Adina RUS, Maria GIURGINCA and Cornelia GURAN

New dibenzobicyclo[2.2.2]octane derivatives

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Key words: dibenzobicyclo[2.2.2]octane derivatives, coordinative complex

9. Horia PETRIDE, Constantin DRĂGHICI, Cristina FLOREA, Maria MAGANU and Silvia UDREA

E/Z isomerism of some diformamides

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Key words: formamides, restricted rotation, NMR spectroscopy

10. Camelia HULUBEI and Simona MORARIU

Alternating copolymers from N-(4-formylphenoxy-4’-carbonylphenil)maleimide. A comparative study

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Key words: malimide copolymers, liquid crystalline behavior

11. Simona MORARIU and Maria BERCEA

Gels based poly(ethylene oxide)-laponite mixtures

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Key words: laponite, poly(ethylene oxide), gel, viscoelastic properties

12. Irinel Adriana BADEA, Luminiţa VLĂDESCU and Arabela PATRICHI

Simultaneous determination of vitamin E and vitamin H1 by first derivative spectrometry in an ointment preparation

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Key words: α-tocopheryl acetate, para-aminobenzoic acid, first derivative UV spectrometry

13. Vasile DAVID, Corina BĂRCUŢEAN, Cristina GEORGITA and Andrei MEDVEDOVICI

Non-miscible solvent large volume injection – HPLC/DAD method for determination of butylated hydroxyanisole in lovastatin and simvastatin pharmaceutical formulations

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Key words: BHA, lovastatin, simvastatin, non-miscible solvent large volume injection, HPLC, DAD

14. Zenovia MOLDOVAN, Laurenţia ALEXANDRESCU and Mădălina PIŢIGOI

Simultaneous estimation of some polymer additives by the spectrotometric method

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Key words: polimer additives, derivative spectrometry, Rubber

15. Laszlo TARKO

New molecular descriptors for hydrogen bonding potential

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Key words: hydrogen bonding potential, logow, PRECLAV, QSPR

No 4, Avril 2006

Tome 51, No 4, Avril 2006

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1. Professor Alexandru T. Balaban’s 75th anniversary

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1.-bis Addendum to Professor Balaban’s List of Publications

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2. Horia PETRIDE, Oana COSTAN, Cristina FLOREA and Silvia UDREA

Competitive amide hydrolysis in mono- and diformylated ethylenediamines

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Key words: amides, hydrolysis

3. Florea DUMITRAŞCU, Constantin DRĂGHICI, Daniela VULUGA and Miron Teodor CĂPROIU

New pyrazoles by 1,3-dipolar cycloaddition reactions between sydnones and activated alkynes

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Key words: sydnones, pyrazoles, 1,3-dipolar cycloaddition, regioselectivity, NMR spectroscopy

4. Rodica Daniela BĂRĂŢOIU, Anca Elena BARBU, Lucia MUTIHAC, Miron Teodor CĂPROIU, Constantin DRĂGHICI, Radu SOCOTEANU and Titus CONSTANTINESCU

4-(3-(phtalhydrazide)azo)N-phenylaza-15-crown-5. Synthesis and properties

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Key words: luminol, N-phenylaza-15-crown-5, luminol derivative, 1H- and 13CNMR spectra at different temperatures, VIS spectra, pKa

5. Constantin I. CHIRIAC, Fulga TANASĂ and Marioara ONCIU

A new direct synthesis of aromatic amides in the presence of triethyl phosphite and 4- dimethylaminopyridine

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Key words: direct condensation; new activating system; TEP-4-DMAP; aromatic amides

6. Mariana Viorica BOGĂŢIAN, Demetra SIMION (NUŢĂ), Andreea Cristina CORBU, Călin DELEANU, Filip CHIRALEU, Maria MAGANU and Gheorghe BOGĂŢIAN

Synthesis membranes derived from pyridinium salts with long alkyl substituents having a terminal free amino group

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Key words: pyridinium salts, artificial membranes, CMC, DLS

7. Gianina DOBRESCU, Niculae I. IONESCU and Monica CĂLDĂRARU

The fractal dimension of oscillations in SnO2/humid O2 system

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Key words: fractal dimension, oscillations, SnO2

8. Maria MRACEC, Laura JUCHEL and Mircea MRACEC

QSAR analysis of a series of imidazole derivatives acting on the H3 receptor

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Key words: QSAR, MLR, MTD, histamine H3 receptor, imidazolic derivatives

9. Niculae ENE and Maria Ileana IONITA

Electrochemical behaviour of dimethyl ether in alkaline solutions at 298 K

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Key words: dimethyl ether, fuel cell, electrochemistry, voltammetry, electrochemical kinetics

10. Marieta BALCAN, Dan F. ANGHEL, Dan DONESCU and Anca-Nicoleta GĂLĂŢANU

Effect of the mobile phase composition on the retention behavior of polydisperse ethoxylated nonylphenols in reversed-phase high performance liquid chromatography

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Key words: nonionic surfactants, poly(ethylene oxide), RP-HPLC, retention behavior, mobile phase composition

11. Ana Maria TOADER, Daniela BULCU and Elena VOLANSCHI

Spectroelectrochemical study of the redox behaviour of questiomycin drugs in aprotic media

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Key words: 2-aminophenoxazin-3-one, 2-aminophenol, cyclic voltammetry, spectroelectrochemistry, MO calculations

12. Maria MRACEC, Laura JUCHEL and Mircea MRACEC

QSAR analysis of a series of imidazole derivatives acting on the H3 receptor

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Key words: QSAR, MLR, MTD, histamine H3 receptor, imidazolic derivatives

13. Niculae ENE and Maria Ileana IONITA

Electrochemical behaviour of dimethyl ether in alkaline solutions at 298 K

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Key words: dimethyl ether, fuel cell, electrochemistry, voltammetry, electrochemical kinetics

14. Marieta BALCAN, Dan F. ANGHEL, Dan DONESCU and Anca-Nicoleta GĂLĂŢANU

Effect of the mobile phase composition on the retention behavior of polydisperse ethoxylated nonylphenols in reversed-phase high performanceliquid chromatography

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Key words: nonionic surfactants, poly(ethylene oxide), RP-HPLC, retention behavior, mobile phase composition

15. Ana Maria TOADER, Daniela BULCU and Elena VOLANSCHI

Spectroelectrochemical study of the redox behaviour of questiomycin drugs in aprotic media

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Key words: 2-aminophenoxazin-3-one, 2-aminophenol, cyclic voltammetry, spectroelectrochemistry, MO calculations

No 3, Mars 2006

Tome 51, No 3, Mars 2006

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1. Valeriu ATANASIU, Irina STOIAN, Cornelia CERCASOV and Bogdan MANOLESCU

α-tocopherol transfer protein: molecular aspects of specific recognition of α-tocopherol

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Key words: α-tocopherol, tocopherol binding protein, AVED, oxidative stress

2. Cornelia G. PALIVAN, Elena BÂCU, Simona ANTONESCU, Cornelia GURAN and Georg GESCHEIDT

Biologically active Cu(II) and Fe(III) complexes of a phenothiazine derivative with an extended coordination sphere. Solution structures

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Key words: copper and iron complexes of N-[α- benzoyl-amino-β-(10-methyl
3-phenothiazinyl)-acriloyl]-phenylhydrazine

3. Oana STĂNĂŞEL, Aurel IOVI, Hrefna KRISTMANNDOTTIR and Iulian STĂNĂŞEL

Physical-chemistry studies on geothermal waters and scale formations

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Key words: deposition control, Watch simulation program, chalcedony geothermometer

4. Gianina DOBRESCU, Mihai ANASTASESCU and Niculae I. IONESCU

Analyzing STM images of Cu(110) in dilute hydrochloric acid using the dynamic scaling method

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Key words: STM, fractal dimension, dynamic scaling approach, Cu(110)

5. Alexandra BANU, Maria MARCU, Octavian RADOVICI, Cristian PIRVU and Marius VASILESCU

Electrodissolution studies of three aluminum alloys in acid, neutral and alkaline solutions

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Key words: aluminium alloys, corrosion behaviour, EIS

6. Raluca CIUBĂR, Valentina MITRAN, Anişoara CÎMPEAN, Dana IORDĂCHESCU

In vitro effects of nickel on human embrionary lung fibroblasts

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Key words: apoptosis, fibroblasts, oxidative stress, nickel

7. Gheorghe IVAN, Maria GIURGINCA, Nicoleta IFTIMIE and Aurelia MEGHEA

Natural antioxidants for thermo-oxidative stabilization of elastomers

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Key words: natural antioxidants, elastomers, FT-IR spectroscopy, chemiluminescence

8. Alexandru POPA, Viorel SASCA, Radmila MARINKOVIĆ-NEDUČIN and Erne E. KIŠ

Catalytic properties of titania-supported heteropolyacids for ethanol oxidation

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Key words: heteropolyacids, titania, ethanol conversion, reaction

9. Romulus DIMA, Gheorghe SOARE, Grigore BOGZA and Valentin PLEŞU

Gas-liquid hydrodynamics in counter-current columns with KATAPAK®-S and BX structured packing

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Key words: structured packing, gas-liquid flow, pressure drop, liquid hold-up, residence times

10. Ion TRANDAFIR and Radu Z. TUDOSE

The study of the extraction columns with cylindrical rotor – the hold-up

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Key words: extraction liquid-liquid, hold-up, equation

No 2, Février 2006

Tome 51, No 2, Février 2006

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1. Adrian CHIRIAC, Dan CIUBOTARIU, Simona FUNAR-TIMOFEI, Ludovic KURUNCZI, Maria MRACEC, Mircea MRACEC, Zoltan SZABADAI, Edward ŞECLĂMAN and Zeno SIMON

QSAR and 3D-QSAR in Timişoara. 1972 – 2005

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Key words: QSAR, 3D-QSAR, MSD, MTD, MTD-PLS, acetic acid derivatives

2. Bogdan BUCUR, Mónica CATALA ICARDO and José MARTINEZ CALATAYUD

Spectrophotometric determination of ammonium by an rFIA assembly

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Key words: ammonia analysis, reverse Flow Injection Analysis (rFIA), modified Berthelot reaction, gas diffusion separation, spectrophotometric determination

3. Doina HUMELNICU, Ionel HUMELNICU and Dănuţ Gabriel COZMA

Study of the UO2²+–acid-2-amino-1-naphtalen sulphonic (ANS) system in solution

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Key words: uranyl ions, semiempirical methods, Arsenazo III, spectrophotometric methods

4. Abdil ÖZDEMIR, Halil AKSOY, Erdal DINÇ, Dumitru BĂLEANU and Saadet DERMIŞ

Determination of guaifenesin and dextromethorphan in a cough syrup by HPLC with fluorometric detection

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Key words: liquid chromatography, fluorometric detection, syrup

5. Prakash SHETTY and A. Nityananda SHETTY

Complexometric determination of thallium(III) using sodium metabisulphite as a selective releasing agent

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Key words: complexometry, EDTA complex, releasing agent, sodium metabisulphite, thallium determination

6. Gabriela Elena BADEA and Teodora BADEA

Kinetics and mechanism of the bromate electrochemical reduction at platinum electrode

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Key words: bromate, reduction, platinum electrode, mechanism

7. Valentina CHIOSA, Cristina MANDRAVEL, Cristiana-Lucia TEODOREANU and Ioana STĂNCULESCU

Comparison of QSPR properties for cholesterol and cholestanol oligomeric association forms

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Key words: cholesterol, cholestanol, oligomers, QSPR properties, energy of interaction

8. Simona RADA and Ioan SILAGHI-DUMITRESCU

Structural, energetic and electronic characterization of the chiral carbon-nitride nanotubes

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Key words: carbon-nitrogen nanotubes, semiempirical calculations, electronic properties, electronic nanodevices

9. Oana Laura RADU, Sylvie ARMAND, François LENOUVEL, Huges DRIGUEZ, Anişoara CÎMPEAN et Dana IORDĂCHESCU

La glycosylation de la lutéoline, en milieux de solvents organiques, par l’action catalytique de la cyclodextrine glycosyltransférase de Bacillus circulans Luteolin glycosylation in organic solvents under catalytic action of cyclodextrin glycosyltransferase from Bacillus circulans

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Key words: lutéoline, cyclodextrines, cyclodextrine glycosyltransférase, Bacillus circulans, transglycosylation, solvents organiques, applications médicales

10. Vasilica DIMA, Petru BALTĂ and Roxana ŞERBAN

Coloured sulphate glasses

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Key words: sulphate glasses coloured, 3d ions, absorption spectra, redox equilibrium

No 1, Janvier 2006

Tome 51, No 1, Janvier 2006

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1. Oana CARP, Luminiţa PATRON and Eugen SEGAL

Thermal properties of solid coordination compounds. IV. Some applications in materials science

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Key words: coordination compounds, thermal analysis, materials science

2. Ramona TUDOSE, Yves JOURNAUX, Imre LABADI, Wolfgang LINERT, Otilia COSTIŞOR, Marius ANDRUH and Maria BREZEANU

Mixed ligand complexes of iron(II), iron(III) and cobalt(II) with pyrazolonic and pyridine ligands

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Key words: Mannich bases, antipyrine, mixed ligand complexes, piridine, magnetism

3. Florea DUMITRAŞCU, Constantin DRĂGHICI, Mino R. CAIRA, Andrei BĂDOIU and Loredana BARBU

Synthesis of 1-[N-(aryl)methylcarbamoyl]-1,10-phenanthrolinium iodides with potential biological activity

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Key words: 1.10-phenanthroline, quaternization, NMR spectroscopy, helical chirality

4. Florentina-Daniela MUNTEANU, Delia GLIGOR, Ionel Cătălin POPESCU and Lo GORTON

Formate dehydrogenase-modified carbon paste electrodes for amperometric detection of formate

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Key words: biosensors, formate dehydrogenase, nicotinamide adenine dinucleotide, phenothiazine  derivative, polyethyleneimine, modified carbon paste electrodes

5. Maria BERCEA and Simona MORARIU

Interpretation of the intrinsic viscosity–temperature dependence on the basis of the excluded volume analysis

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Key words: intrinsic viscosity, random copolymers, theta temperature

6. Mihai Cosmin COROBEA, Dan DONESCU, Sever ŞERBAN, Cătălin DUCU, Viorel MALINOVSCHI
and Ioan ŞTEFĂNESCU

Polymer-nanoclay hybrids obtained by emulsion polymerization of vinyl acetate in the presence of an organically modified montmorillonite

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Key words: nanocomposites, emulsion polymerization, polyvinylacetate, montmorillonite

7. Daniela Cristina MOMETE, Enrica VERNE, Chiara VITALE BROVARONE and Dan Sorin VASILESCU

Saliva study for a novel dental composite with polymeric matrix

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Key words: dental composite, saliva, pH, sorption, microhardness, ions release

8. Corneliu HAMCIUC, Elena HAMCIUC, Tăchiţă VLAD-BUBULAC and Oana PETREUŞ

Aromatic polyethers containing 1,3,4-oxadiazole rings

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Key words: aromatic polyethers, 1,3,4-oxadiazole rings, good solubility, high thermal stability, fluorescence

9. Ştefan DIMA, Gabriela BAHRIM and Monica MURĂRESCU

Kinetic study on the preparation reaction of carbanion monosubstituted phtalazinium ylides

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Key words: cycloimmonium ylides, phtalazinium ylides, ylide inactivation

10. Dorin BOMBOŞ, Fănica BACALUM, Mihaela BOMBOŞ and Grigore BOZGA

Influence of the Pd distribution in a Pd/HZSM-5 catalyst on acetone conversion to methyl isobutyl ketone

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Key words: bifunctional catalyst, Pd/H-ZSM-5, methyl isobutyl ketone, nonuniform Pd distribution catalyst