Archive for 2008

No 12 Décembre 2008

Tome 53, No 12 Décembre 2008

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1. Oana CARP

The influence of the central metallic ion on the thermal behaviour of solid coordination compounds

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Key words: coordination compound, metallic ion, thermal behaviour

2. Gabriela RĂU, Anca MOANŢĂ and George-Dan MOGOŞANU

Novel azoderivatives as liquid crystals

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Key words: azoderivatives, synthesis, liquid crystals

3. Hanene NAJAR, Mongia SAÏD ZINA et Abdelhamid GHORBEL

Effet de la désalumination du support zéolithique sur l’activité du palladium dans la combustion du méthane
Zeolitic support dealumination effect on methane combustion over palladium catalyst

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Key words: Zéolithe-Y, désalumination, catalyse, combustion du methane

4. Magdalena BOŞOMOIU, Grigore BOZGA and Gheorghe SOARE

Methane combustion over a commercial platinum on alumina catalyst: kinetic and catalyst deactivation

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Key words: methane combustion, catalyst, platinum on alumina, kinetics, deactivation

5. Cristina STOICESCU, Olga IULIAN and Florinela SÎRBU

Liquid+liquid equilibrium data for the ternary mixtures of 1-propanol+water with 1-butanol, 1-hexanol, 1-octanol, or 1-decanol at 294.15 K

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Key words: liquid + liquid equilibrium data, water + n-alcohol ternary systems, cloud-point method

6. Olga IULIAN, Florinela SÎRBU and Cristina STOICESCU

Density and apparent molar volume prediction in some ternary electrolyte solutions

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Key words: density prediction, apparent molar volume

7. Alina LATUS and Elena VOLANSCHI

Electrochemical and spectral study of the redox behavior and cardiotoxicity of anticancer drugs with antraquinone structure: quinizarin

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Key words: antraquinone drugs, cyclic voltammetry, UV-VIS spectroelectrochemistry, MO- calculations, cardiotoxicity

8. Silvia CURTEANU and Maria CAZACU

Optimization of a polysiloxane synthesis process using artificial intelligence methods

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Key words: genetic algorithms, neural networks, polysiloxane, optimization

9. Radu SILAGHI-DUMITRESCU

The “push” effect of the thiolate axial ligand in superoxide reductase: a density functional study

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Key words: DFT/ iron/ superoxide reductase/ thiolate push/ enzyme

10. Laurian VLASE, Daniela-Saveta POPA, Sorin E. LEUCUŢA and Felicia LOGHIN

Bioanalysis of methadone in human plasma and urine by LC/MS/MS

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Key words: methadone, LC/MS/MS, plasma, urine

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No 11 Novembre 2008

Tome 53, No 11 Novembre 2008

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1. Ligia-Maria OMOTA, Olga IULIAN, Oana CIOCÎRLAN and Irina NIŢĂ

Viscosity of water, 1,4-dioxane and dimethyl sulfoxide binary and ternary systems at temperatures from 293.15 K to 313.15 K

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Key words: viscosity deviations, 1,4-dioxane, dimethyl sulfoxide, water

2. Mihaela PETRE

Solubility of propylene and propane gases in N-methylpyrrolidone and dimethylformamide solvents

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Key words: propylene, propane, N-methylpyrrolidone, dimethylformamide, Ostwald coefficients

3. Viorel BRÂNZOI, Florina BRÂNZOI and Florentina GOLGOVICI

The electrochemical behaviour of some composite coatings obtained by electrosynthesis on metallic substrate

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Key words: composite coating, conductive polymers, electrochemical oxidation, cyclic voltammetry and electrochemical impedance spectroscopy method

4. Cristian PIRVU, Alexandra BANU, Octavian RADOVICI and Maria MARCU

Aplication of electrochemical impedance spectroscopy (EIS) to study of phenolic films

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Key words: electrochemical impedance, phenol, electrooxidation, pseudocapacitance, equivalent circuit

5. Doina DIMONIE, Constantin RADOVICI, Ramona Marina COSEREA, Sorina GÂREA and Mircea TEODORESCU

The polymer molecular weight and silicate treatment influence upon the morphology of nanocomposites for food packaging

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Key words: nanocomposites, poly (ethylene–co–vinyl acetate), layered silicates, barrier properties, melt processing

6. Dan DRAGU and Mihai BUDA

Practical aspects associated with the use of Jacobi polynomials in the simulation of quasi-reversible
electrode processes with linear potential scan and diffusional control in one dimension

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Key words: cyclic voltammetry, simulation, general Jacobi polynomials, orthogonal collocation

7. Gabriela Geanina VASILE and Ion Gh. TĂNASE

Comparative study of different extraction methods for evaluation of biovailability of terrestrial sediment – bound metallic elements

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Key words: BCR 701, sediment, mobile elements, EDTA

8. Zenovia MOLDOVAN, Florica IONESCU, Ioana VASILESCU, Simona LIŢESCU and Laurenţia ALEXANDRESCU

HDPE-EPDM thermoplastic vulcanizates. Mechanical and IR spectrometric properties

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Key words: HDPE/EPDM thermoplastic vulcanizates.

9. Ruxanda BODÎRLĂU and Carmen-Alice TEACĂ

Softwood chemical modification by reaction with organic anhydrides

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Key words: softwood, chemical modification; FT-IR; weight percent gain; water absorption

10. Zaki AJJI

Radiation-induced preparation of gypsum/ poly(methyl acrylate) composites

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Key words: gypsum, polymer composites, methyl acrylate, radiation polymerization

11. Annemarie PURI, Alina BĂDĂNOIU and Georgeta VOICU

Eco-friendly binders based on fly ash

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Key words: fly ash, lime, alkali-activated binders, sodium silicate

No 10, Octobre 2008

Tome 53, No 10, Octobre 2008

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1. Anabela Sousa De OLIVEIRA, Josino COSTA MOREIRA and Luis Filipe VIEIRA FERREIRA

Surface photochemistry techniques applied to the study of environmental carcinogens

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Key words: surface photochemistry, ground state diffuse reflectance, laser induced luminescence, diffuse reflectance laser flash hotolysis, polycyclic aromatic hydrocarbons, environmental arcinogens

2. Mirela CĂLINESCU, Emilia ION and Adrian-Mihail STADLER

Studies on nickel(II) complex compounds with 2-benzothiazolyl hydrazones

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Key words: hydrazones, benzothiazolyl hydrazones, Ni(II) complexes, ligand field theory

3. Mirela CĂLINESCU, Emilia ION, Rodica GEORGESCU and Ticuţa NEGREANU-PÎRJOL

Synthesis, spectroscopic, antibacterial and antifungal studies on copper(II) complexes with 2-benzothiazolyl hydrazones

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Key words: copper(II) complexes, benzothiazolyl hydrazones, electronic paramagnetic resonance, antimicrobial activity

4. Nicoleta STĂNCIUC (SAVA), Iesel van der PLANCKEN, Gabriela ROTARU and Marc HENDRICKX

Denaturation impact in susceptibility of betalactoglobulin to enzymatic hydrolysis: a kinetic study

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Key words: kinetics, β-lactoglobulin, thermal treatment, hydrolysis, pH-stat

5. Stelian LUPU, Paul Cătălin BALAURE, Cecilia LETE, Mariana MARIN and Nicolae TOTIR

Voltammetric determination of dopamine at PEDOT-Prussian blue composite modified electrodes

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Key words: hybrid inorganic-organic coatings, modified ultramicroelectrode, dopamine, ascorbic acid, differential pulse voltammetry

6. Alexandra BANU, Maria MARCU and Octavian RADOVICI

Electrochemical studies on tribocorrosion behavior of a nickel-chromium-molybdenum dental alloy in
artificial saliva

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Key words: friction, corrosion, stainless steels, dental alloy

7. Alexandra BANU, Octavian RADOVICI and Maria MARCU

The alloying influence on corrosion behaviour of chromium surgical alloys

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Key words: corrosion, chromium alloys, bio-fluids, cyclic voltametry, EIS

8. Maria SPǍTARU, Christu ŢÂRDEI, Monica R. NEMŢANU and Florentina BOGDAN

Rheology of tricalcium phosphate (β-TCP) suspensions

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Key words: β-TCP, aqueous suspensions, additions, rheological characteristics

9. Laura BUCUR, Ticuţa NEGREANU-PÎRJOL, Maria GIURGINCA and Viorica ISTUDOR

Some new Elaeagnus angustifolia L. extracts and the pharmaceutical products’ antioxidant activities
determined by the chemiluminiscence method

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Key words: antioxidant activity, chemiluminiscence method, polyphenols, Elaeagnus angustifolia L.

10. Mircea ŞTEFAN, Daniela Simina ŞTEFAN, Ioana Andreea MARINESCU, Mihai BELCU and Danuţ Ionel VǍIREANU

Simultaneous sorption of cadmium, zinc and lead on montmorillonite

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Key words: sorption, cadmium, zinc, lead, wastewaters

No 9, Septembre 2008

Tome 53, No 9, Septembre 2008

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1. Elena HAMCIUC, Camelia HULUBEI, Maria BRUMĂ, Inga A. RONOVA and Ekaterina A. SOKOLOVA

Influence of conformational parameters on physical properties of some poly(imide-ether-amide)s based on Epiclon

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Key words: poly(imide-ether-amide)s, Epiclon, conformational rigidity, thermal properties, good solubility

2. Camelia HULUBEI

Functional maleimide-based structural polymers

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Key words: maleimides, polymaleimides, crosslinking, thermogravimetric analysis.

3. Marieta CONSTANTIN, Gheorghe FUNDUEANU and Marieta NICHIFOR

Synthesis and characterization of novel flavonoid based biomaterials

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Key words: polyamide fabric, troxerutin, graft polymerization, drug delivery system

4. Ecaterina AVRAM and Gabriela LISA

Thermal degradation behaviour and kinetic analysis of polystyrene with pendent viologen groups

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Key words: polyacrylonitrile, physical gelation, viscoelastic parameters

5. Maria BERCEA, Simona MORARIU and Cristina-Eliza BRUNCHI

Influence of non-solvent on the gelation phenomenon of polymer solutions

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Key words: polyacrylonitrile, sol-gel transition, viscoelastic paramet

6. Nicolae HURDUC, Ramona ENEA, Ioana MOLEAVIN, Elena-Emilia IORGULESCU and Victor DAVID

Characterization of some polysiloxanes containing nucleobases and azobenzene groups in their sidechain
or crown azo-ether within polymeric chains by means of negative-ionization mass spectrometry with atmospheric pressure chemical ionization

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Key words: polysiloxanes, nucleobases, azobenzene, crown ether, mass spectrometry, fragmentation

7. Mircea GRIGORAŞ, Loredana STAFIE and Marian TOTOLIN

Polyimines containing N-hexyl 3,6-carbazolyl-diyl and 1,4-phenylene units in the main polymer chain

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Key words: polyimines, solution polycondensation, linear polymer, macrocyclic compounds

8. Ion SAVA

Synthesis and characterization of some poly(amideimide)s by direct polycondensation

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Key words: poly(amide-imide)s, direct polycondensation, high thermal stability, thin films

9. Maria BRUMĂ, Ion SAVA, Mariana Dana DĂMĂCEANU, Nataliya M. BELOMOINA and Jenifer ROBISON

New polyimides containing siloxane groups in the main chain

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Key words: polyimides, siloxane groups, high thermal stability, thin films, green photoluminescence

10. Mariana Viorica BOGĂŢIAN, Mircea VINATORU, Gheorghe BOGĂŢIAN, Filip CHIRALEU, Mărioara GODEANU and Călin DELEANU

Artificial membranes by the self-assembly of pyridinium salts with a free amino group derived from pyrilium salts with long alkyl substituents

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Key words: pyridinium salts, artificial membranes, optical microscopy, DLS

11. Cristina PRISACARIU and Elena SCORTANU

Morphology of polyurethanes based on the chain extender ethylene glycol and aromatic flexible diisocyanates, as revealed by scanning electron microscopy

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Key words: polyurethanes, diisocyanates, morphology, crystallinity

12. Mihaela SILION (FRUNZA), Marcel Ionel POPA, Gabriela LISA and Doina HRITCU

New hybrid compounds containing intercalated ciprofloxacin into layered double hydroxides: synthesis and characterization

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Key words: layered double hydroxides, ciprofloxacin, coprecipitation, ion exchange

13. Constantin I. CHIRIAC, Fulga TANASA and Mariora NECHIFOR

A new alternative method for the synthesis of cinnamic acids from aromatic aldehydes and zinc acetate

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Key words: cinnamic acid, synthesis, zinc acetate, C-Cforming

14. Emilia OLTEANU, Constantin DRĂGHICI and Miron T. CĂPROIU

The synthesis and the spectral characterization of new bicyclo[2.2.1]heptadiene derivatives

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Key words: norbornadiene; bistosylhydrazone; Bamford Stevens reaction

15. Mirela ENACHE and Elena VOLANSCHI

Fluorescence study of the interaction of antitumor drug actinomycin D with double stranded DNA

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Key words: antitumor drug-DNA interaction, actinomycin D, fluorescence spectroscopy

16. Mihaela SCHULZ, Maria MRACEC, Eugen ŞIŞU, Ludovic KURUNCZI and Mircea MRACEC

PM3 conformational analysis of the (3S,5R,6R)-6 acetylamidopenicillanic acid. I. Geometrical properties

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Key words: (3S,5R,6R)-6-acetylamidopenicillanic acid, conformational analysis, geometrical properties, PM3

17. Gabriela LISA, Silvia CURTEANU and Cătălin LISA

Prediction of excess thermodynamic properties from experimental refractive index of binary mixtures. 2. Artificial neutral network modeling

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Key words: neural networks, excess thermodynamic properties, binary mixtures

18. Cristina STAN, Constantin P. CRISTESCU and Dumitru ALEXANDROAEI

Coherence resonance in excitable systems: activator-inhibitor dynamics

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Key words: excitable systems, coherence resonance, chemical oscillator, electric double layer

19. Alexandru CECAL, Oana HAUTĂ, Ada MACOVEI, Evelini POPOVICI, Ioana RUSU and Nicoleta MELNICIUC-PUICA

Hydrogen yield from water radiolysis in the presence of some pillared clays

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Key words: catalysis, clays, hydrogen, radiolysis, water

20. Dorina BRĂTFĂLEAN, Vasile Mircea CRISTEA, Paul Şerban AGACHI and Dan Florin IRIMIE

Improvement of sunflower oil extraction by modelling and simulation

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Key words: sunflower genotypes, mechanical oil press, Soxhlet extraction, mathematical modeling

No. 8, Août 2008

Tome 53, No. 8, Août 2008

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1. Florea DUMITRAŞCU, Emilian GEORGESCU, Florentina GEORGESCU, Petru FILIP, Barbu MIU and Dan G. DUMITRESCU

New substituted indolizines by 1,3-dipolar cycloaddition reactions. Part 2. 7-cyanoindolizines.

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Key words: pyridinium N-ylides, acetylenic dipolarophiles, 1,3-dipolar cycloaddition, epoxides, 7-cyanoindolizine

2. Carmen LIMBAN, Alexandru-Vasile MISSIR, Ileana Cornelia CHIRIŢĂ, Carmellina Daniela BĂDICEANU, Constantin DRĂGHICI, Mariana Carmen BALOTESCU and Oana STAMATOIU

New thioureides of 2-(4-methyl-phenoxymethyl)-benzoic and 2-(4-methoxy-phenoxymethyl)-benzoic acids with biological activity.

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Key words: thiourea derivatives, thioureides, 2-(4-methylphenoxymethyl)-benzoic acid, 2-(4-methoxyphenoxymethyl)-benzoic acid

3. Niculae I. IONESCU and Monica CǍLDǍRARU

Desorption kinetics in the ZnO nanopowder/ O2 system.

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Key words: desorption, charge transfer, ZnO

4. Erdal DİNÇ, Fahrettin ARSLAN and Dumitru BĂLEANU

Spectrophotometric simultaneous analysis of twocomponent mixture by bivariate and multivariate
calibrations using the linear regression functions.

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Key words: spectral bivariate calibration, spectral multivariate calibration, simultaneous determination, chlorzoxazone, paracetamol, tablets

5. Daniela Simina ŞTEFAN, Ion UNTEA, Violeta NEAGU, Cornelia LUCA and Mircea ŞTEFAN

Selective retention of Hg2+ ions from aqueous solutions by various amide groups-functionalized copolymers.

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Key words: copolymers, amide functional groups, mercury, sorption, wastewaters treatment

6. Aniela POP, Florica MANEA, Ciprian RADOVAN, Ioana CORB, Georgeta BURTICA, Plamen MALCHEV, Stephen PICKEN and Joop SCHOONMAN

Determination of 4-chlorophenol using two types of graphite-based composite electrodes.

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Key words: expanded graphite based composite electrode, 4-chlorophenol, electrochemical determination

7. Radoslav D. MIĆIĆ, Radmila P. MARINKOVIĆ-NEDUČIN, Zoltán SCHAY, István NAGY, Milica HADNAĐEV and Ernő E. KISS

Influence of activation temperature on structural and textural properties of CoMo/Al2O3 hydrodesulfurization catalyst.

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Key words: CoMo/Alumina, HDS catalyst, activation temperature, XP spectra

8. Gheorghe BUMBAC, Cristian CIORNEI, Adrian TURCU and Ovidiu MUNTEAN

New solution for thermal coupling between a crude distillation unit and a fluid catalytic cracking unit.

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Key words: thermal process pinch, grand composite curves, process integration, process heat recovery

9. Mircea Ionuţ PETRESCU and Minodora PASĂRE

True hardness of Ni-P/SiC coatings derived by a mathematical model.

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Key words: electrolytic Ni-P/SiC coatings, ISE effect, true hardness, microhardness mathematical processing

10. Ileana C. FĂRCĂŞANU, Codruţa PARASCHIVESCU, Lavinia RUŢĂ, Eliza OPREA and Sorin AVRAMESCU

Manipulation of Ni2+ tolerance of Sacchromyces cerevisiae cells: a primary step to bioremediation by removal and recovery of Ni2+ from contaminated waters.

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Key words: Saccharomyces cerevisiae, nickel, tolerance, hyperaccumulation

No. 7, Juillet 2008

Tome 53, No. 7, Juillet 2008

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1. Florea DUMITRAŞCU, Constantin DRĂGHICI, Barbu MIU, Dan G. DUMITRESCU and Marcel POPA

Symmetrical and non-symmetrical olefinic and acetylenic dipolarophiles in the synthesis of pyrrolo[1,2-b]pyridazine derivatives.

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

2. Horia PETRIDE, Constantin DRĂGHICI, Cristina FLOREA and Maria MAGANU

Some N-mono- and N, N’-disubstituted derivatives of 2-piperazinecarbonitrile.

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Key words: piperazines, conformation, NMR spectroscopy

3. Daniela APREUTESEI and Georg H. MEHL

Bent-core systems based on [1,3,4]oxadiazole core with shape biaxiality.

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Key words: [1,3,4]oxadiazole derivatives, bent-core mesogenic systems, mesomorphic properties

4. Niculae I. IONESCU

Kinetics of adsorption and desorption in solid-gas systems and the logarithmic rate law.

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Key words: adsorption, desorption, logarithmic law

5. Stelian LUPU, Cecilia LETE, Mariana MARIN and Nicolae TOTIR

Electrochemistry of metal hexacyanoferrates and conducting polymers bilayer structures deposited on conventional size electrodes and ultramicroelectrodes. I. Conventional size modified electrodes.

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Key words: hybrid inorganic-organic coatings, modified electrodes, conducting polymers, polythiophene derivative, polyazulene, Prussian Blue, cyclic voltammetry

6. Stelian LUPU, Cecilia LETE, Mariana MARIN and Nicolae TOTIR

Electrochemistry of metal hexacyanoferrates and conducting polymers bilayer structures deposited on conventional size electrodes and ultramicroelectrodes. II. Modified ultramicroelectrodes.

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Key words: hybrid inorganic-organic coatings, modified ultramicroelectrodes, conducting polymer, Prussian Blue, cyclic voltammetry

7. Viorel BRÂNZOI, Florentina GOLGOVICI and Florina BRÂNZOI

Electronically conductive polymers type polypyrrole and polyaniline obtained by electropolymerization onto aluminium substrate.

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Key words: polypyrrole and polyaniline films, electropolymerization, cyclic voltammetry and electrochemical impedance spectroscopy method

8. Minodora PASĂRE, Mircea Ionuţ PETRESCU and Marioara ABRUDEANU

Heat treatment and P effect on Ni-P/SiC coatings hardness.

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Key words: electrolitic co-deposition, solid state solubility extension, microhardness, ISE effect

9. Mohamed NOHAIR et Mohssine El MORRAKCHI

Optimisation d’un modèle de réseau de neurones robuste à partir de la régularisation Bayesienne et la méthode d’autocorrélation pour la prédiction de la temperature d’ébullition des alcanes A quantitative structure-activity relantionships model for the boiling point of alcanes using Bayesian-regularized neural networks.

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Key words: réseaux de neurones, régularisation bayésienne, méthode d’autocorrélation, alcanes, technique de validation croisée

10. Gabrielle Charlotte CHIŢANU, Irina POPESCU, Irina Mihaela PELIN and Mihaela Iuliana AVADANEI

Synthesis and characterization of maleic anhydride copolymers and their derivatives. 4. Synthesis and
characterization of maleic anhydride-acrylonitrile copolymers.

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Key words: maleic anhydride-acrylonitrile copolymers, radical copolymerization, copolymer composition

No. 6, Juin 2008

Tome 53, No. 6, Juin 2008

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1. Krassimira KUMBILIEVA and Lachezar PETROV

Reaction mechanism and deactivation modes of heterogeneous catalytic systems.

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Key words: catalysis, kinetics, deactivation, reaction mechanism

2. Mariana Viorica BOGĂŢIAN, Anca HÎRTOPEANU, Alina NICOLESCU, Filip CHIRALEU, Maria MAGANU, Mircea VÎNĂTORU, Demetra SIMION and Călin DELEANU

Pyrylium salts with long alkyl substituents and derived pyridinium salts.

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Key words: N-phenylpyridinium chlorides, surfactants, CMC

3. Gabriela IONIŢĂ

Inclusion complexes between β-cyclodextrin and biradicals with a rigid aromatic skelet.

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Key words: biradicals, EPR spectroscopy, cyclodextrin

4. Constantin MIHAILCIUC and Stelian LUPU

Electrodeposition, characterization and application of Pt/CoHCF modified electrode.

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Key words: ascorbic acid, cobalt(II)-hexacyanoferrate, differential pulse voltammetry

5. Constantin MIHAILCIUC and Stelian LUPU

Electrodeposition, characterization and application of Pt/P3MT modified electrode.

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Key words: ascorbic acid, poly(3-metylthiophene), conducting polymer, differential pulse voltammetry

6. Viorel BRÂNZOI, Florina BRÂNZOI, Angela STANCA and Liviu MITITEANU

Corrosion protection of industrial cooling water systems by using new organic polymers as inhibitors.

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Key words: antiscaling and corrosion inhibitors, microwave field, potentiodynamic polarizations, metallography analysis

7. Ioan-Răducan STAN, Maria TOMOAIA-COTISEL, Aurelia STAN and Cristina BORZAN

The effect of surface active compound adsorption on free drop deformations.

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Key words: interfacial tension gradient, Marangoni force, Marangoni effect, free drop deformations, dynamic instability, hydrodynamic model

8. Teodora STAICU, Marin MICUTZ, Gabriela CRISTESCU and Minodora LECA

Temperature influence on surfactants adsorption onto poly(vinyl acetate) latices prepared via surfactant-free emulsion polymerization.

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Key words: surfactant-free emulsion polymerization, monodispersed latices, surfactant adsorption, fluorescence probes

9. Roxana BADULESCU, Ion BOLOCAN and Dan Sorin VASILESCU

Chemical transformation of poly(styrene-alt-maleic anhydride) with p-amino-N, N-diethylaniline.

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Key words: poly (styrene-alt-maleic anhydride), chemical transformation, FTIR analyses

10. Daniela ISTRATI, Angela POPESCU, Dan MIHAIESCU, Ioana SARAMET and Mihaela C. BALAŞU

Flow-vacuum pyrolysis of polycyclic compounds. 25. Pyrolysis of some 3-mercapto-5-substituted-
1,2,4-triazoles.

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Key words: flow-vacuum pyrolysis (FVP), substituted-1,2,4-triazoles

No. 5, Mai 2008

Tome 53, No. 5, Mai 2008

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1. Maria BRUMĂ

Aromatic polyoxadiazoles with silicon in the main chain.

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Key words: polyoxadizoles, diphenylsilylene groups, high thermal stability, thin films, blue photoluminescence

2. Elisabeta-Cristina ANI and Paul Şerban AGACHI

Prediction of the behaviour of a hydrogen-oxygen PEM fuel cell based on a simplified model.

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Key words: fuel cells behaviour, hydrogen-oxygen PEM fuel cells, fuel cells transient behaviour, fuel cells mathematical model

3. Cristina STOICESCU, Olga IULIAN and Florinela SÎRBU

Equilibrium experimental data in ternary system containing water + 1-propanol + 1-butanol, 1-pentanol or 1-hexanol.

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Key words: liquid-liquid equilibria, water + n-alcohol ternary systems, cloud-point method

4. Iozsef JUHASZ, Ion CONSTANTIN, Vasile HOTEA, Elena POP and Mihaela PODARIU

Researches on the electrolyte purification and the useful elements recovery in the copper electrolytic
refining process

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Key words: copper, stibium, arsenium, electrolytic refining

5. Maria CIOROI

5-hydroxymethylfurfural – a possible indicator in the preservation abilities of the thermally processed food.

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Key words: 5-hydroxymethilfurfural (5-HMF), glucose-lysine model system, Maillard reaction, HPLC method

6. Gheorghiţa MITRAN, Ioan-Cezar MARCU, Adriana URDĂ and Ioan SĂNDULESCU

Oxidative dehydrogenation of isobutane over V-Mo-(Ni)-O catalysts.

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Key words: isobutane, oxidative dehydrogenation, isobutene, molybdenum-vanadium mixed oxides, nickel

7. Gheorghiţa MITRAN, Ioan-Cezar MARCU, Mihaela FLOREA and Ioan SĂNDULESCU

Mo-V-M-O (M = Ni, Cu, Zn, Sb, Ta) mixed metal oxides prepared by solid-solid reactions for oxidative dehydrogenation of isobutane.

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Key words: modified molybdenum-vanadium mixed oxides, isobutane, oxidative dehydrogenation

8. Ştefan DIMA, Romică CREŢU and Traian FLOREA

Emulsification of vegetable oils with nonionic surfactants and polypeptides.

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Key words: emulsification, surfactants, interfacial surface, emulsifying activity index

9. Rodica LIPSA, Nita TUDORACHI and Cornelia VASILE

Poly(vinyl alcohol)/poly(lactic acid) blends biodegradable films doped with colloidal silver.

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Key words: poly(vinyl alcohol)/poly(lactic acid) blend, biodegradable films, colloidal silver nanoparticles

10. Adriana ISVORAN, Eudald VILASECA, Laura UNIPAN, Josep-Lluis GARCÉS and Francesc MAS

Computational study of diffusion in cellular twodimensional crowed maedia modeled as mixtures of mobile and immobile obstacles.

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Key words: Monte Carlo algorithm, crowded media, anomalous diffusion

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

No 3, Mars 2008

Tome 53, No 3, Mars 2008

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1. I. Ben GHARBIA, R. KEFI, C. Ben NASR and A. DURIF

Structure and characterization of a new inorganicorganic hybrid complex of Zn(II) with 2-amino-4-methylpyridine

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Key words: 2-amino-4-methylpyridine, organic-inorganic hybrid, π-π interactions, Nuclear Magnetic Resonance (NMR)

2. Aurel PUI, Doina HUMELNICU, Ionel HUMELNICU and Cătălin TANASE

Synthesis of some complexes of dioxouranium(VI) with di-halogeno-tetra-methyl salen ligands

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Key words: Uraniu(VI) complexes, Schiff bases

3. Florea DUMITRAŞCU, Mino R. CAIRA, Constantin DRĂGHICI, Miron T. CĂPROIU, Loredana BARBU and Barbu MIU

New 1,10-phenanthroline derivatives with potential antitumoral activity.

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Key words: N-ylide, 1,3-dipolar cycloaddition, pyrrolophenanthrolines, antitumoral activity

4. Constantin I. TĂNASE, Florea G. COCU, Constantin DRĂGHICI and Miron T. CĂPROIU

Useful intermediates for fine organic synthesis by hydroxylation of 1,2,3,3a,4,6a-hexahydro-1,3-
pentalenedimethanol and bis OH-protected derivatives

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Key words: hexahydro-pentalenedimethanol, KMnO4 hydroxylation, NMR spectra

5. Constantin I. TĂNASE, Florea G. COCU, Constantin DRĂGHICI and Miron T. CĂPROIU

1,2,3,3a,4,6a-hexahydro-1,3-pentalenedimethanol, mono and bis OH-protected derivatives, useful
intermediates for fine organic synthesis.

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Key words: hexahydro-pentalenedimethanol, esters, ethers, NaBH4 reduction, NMR spectra

6. Alexandru CECAL, Ada MACOVEI, Gabriela TAMBA, Oana HAUTA, Karin POPA, Dumitru GANJU and Ioana RUSU

On the hydrogen production by catalyzed radiolysis of water.

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Key words: catalysts, γ-rays, hydrogen, water radiolysis, zeolites

7. Rodica PODE, Eveline POPOVICI, Erika REISZ, Laura COCHECI, Elena Mihaela SEFTEL and Vasile PODE

Sorption characteristics of phosphate and thiocyanate anions on multicomponent Mg/Ni-Altype hydrotalcites

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Key words: Mg/Ni-Al hydrotalcites, anions sorption, equilibrium, standard Gibbs energy

8. Gianina DOBRESCU, Emilia BALABANOVA, Maria ZAHARESCU and Niculae I. IONESCU

TEM micrographs fractal analysis of silica powders

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Key words: fractal dimension, sphere method, TEM micrograph, silica powders

9. Mădălina VĂDUVA and Vasile STANCIU

Separation of nitrogen from air.

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Key words: molecular sieves, adsorption, chromatography, coal

10. Alina BĂDĂNOIU, Maria GEORGESCU and Anca ZAHANAGIU

Properties of blended cements with hazardous waste content.

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Key words: hazardous waste, blended cements, stabilization/solidification, properties

11. Nacer-Eddine DJELALI et Leila DADDI OUBEKKA

Polymérisation cationique du styrène par anode soluble.
Cationic polymerization of styrene by anodic dissolution.

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Key words: électropolymérisation, oxydation, anode métallique, voltampérométrie, coulométrie

12. Silvia CURTEANU

Multiobjective optimization of a free radical polymerization. III. A hybrid method based on genetic algorithms.

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Key words: multiobjective optimization, genetic algorithms, hybrid method, polymerization process.

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