No 11-12, Novembre-Decembre 2009

Tome 54, No 11-12 Novembre-Decembre 2009

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1. Centennial of acad. Ecaterina Ciorănescu-Nenitzescu’s birthday

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2. Angela POPESCU, Elena ANDREI, Daniela ISTRATI, Constantin DRĂGHICI, Crinu CIUCULESCU and Mircea D. BANCIU

Flow-vacuum pyrolysis of polycyclic compounds. 27. Pyrolysis of 8,9-dihydro-14H- tetrazolo[1,5a]dibenzo[c,f]azonine and 6,7,8,9-tetrahydro-tetrazolo[1,5a]benzo[c]azocine.

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Key words: flow-vacuum pyrolysis, tetrazoloazonine, tetrazoloazocine, N-cyanoderivatives.

3. Emilia OLTEANU, Angela POPESCU, Constantin DRĂGHICI and Crinu CIUCULESCU

Flow-vacuum pyrolysis of polycyclic compounds.28. Pyrolysis of 1a,2,2a,6b,7, 7a-hexahydro-1β-
(hydroxymethyl)-2,7-methano-cyclo-propa[b]biphenylene.

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Key words: flow-vacuum pyrolysis, benzotetracyclic primary alcohol, tetrahydro-hydroxymethyl-benzo[e]azulenes.

4. Ana Cristina RĂDUŢIU, Ion BACIU, Miron T. CĂPROIU, Constantin DRĂGHICI, Adrian BETERINGHE, Maria MAGANU, Radu SOCOTEANU, Titus CONSTANTINESCU and Alexandru T. BALABAN

Two isomeric bis-dinitrocarboxyphenyl-Kriptofix-22 derivatives: synthesis and characteristics.

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Key words: K22 Isomers derivatives, 1H- and 13C-NMR, theoretical structural investigation, hydrophobic/hydrophilic balance.

5. Luminitza PÂRVULESCU, Anca MARTON, Marina MIHAI, Constantin DRĂGHICI, Richard A. VARGA and Mircea D. GHEORGHIU

6,6-dimethyl- and 6,6-diphenylfulvene as cycloaddents in reaction with Moore’s ketene.

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Key words: ketenes, fulvenes, cycloadditions.

6. Sandra REEMERS, Helmut KEUL and Martin MÖLLER

Synthesis and films of dendritic poly(ε-caprolactone) hybrids.

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Key words: HDI-uretdione, dendritic hybrids, hydrophobic surfaces, oleophobic, scaning force microscopy.

7. Alexandru C. RAZUS, Liviu BIRZAN, Mihaela CRISTEA, Eleonora-Mihaela UNGUREANU and
Dan-Ion CAVAL

Electrochemical behaviour of bis diazenyls containing azulenyl moieties.

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Key words: azo–azulene compounds, cyclic voltammetry, ionization potentials, molecular orbital calculations.

8. Florea DUMITRAŞCU, Constantin DRĂGHICI, Miron T. CĂPROIU, Dan G. DUMITRESCU, Marcel Mirel POPA

New pyrrolo[1,2-b]pyridazine derivatives.

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Key words: pyrrolo[1,2-b]pyridazine, pyridazinium N-ylides, multicomponent reaction.

9. Mariana Viorica BOGĂŢIAN, Anca HÎRTOPEANU, Alina NICOLESCU, Gheorghe BOGĂŢIAN, Călin DELEANU, Maria MAGANU and Petru FILIP

Pyrylium salts with long alkyl substituents. 2,6-dipalmitoyl- and 2,6-distearoyl-3,4-dimethyl pyrylium salts, derived pyridines and pyridinium salts.

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Key words: pyrylium and pyridinium salts with long alkyl substituents, regioselectivity.

10. Paul Cătălin BALAURE, Ion COSTEA, Florin IORDACHE, Constantin DRĂGHICI and Cristian ENACHE

Synthesis of new dibenzo[b,f]azepine derivatives.

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Key words: dibenzo[b,f]azepine, 10,11 dihydrodibenzo[b,f]azepine, antiepileptic drugs.

11. Michaela Dina STĂNESCU, Beatrice CALMUSCHI-CULA and Cornelia GURAN

Dibenzobicyclo[2.2.2]octane derivatives. II. Structure and decomposition evidenced by X-ray analysis.

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Key words: dibenzobicyclo[2.2.2]octane derivatives, X-ray study, decomposition at complexation.

12. Magdalena Cristina STANCIU, Marieta NICHIFOR and Bogdan C. SIMIONESCU

New biocompatible polyesters based on bile acids.

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Key words: polyester, bile acid, thermal behaviour, cristallinity.

13. Ion SAVA

FeS2/polyimide composite films. Synthesis and characterization.

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Key words: FeS2/polyimide composite film, thermal stability, dynamic mechanical behaviour.

14. Cristina PRISACARIU and Elena SCORTANU

The thermal behaviour of selected crosslinked polyurethanes as revealed by thermogravimetry and static compression tests.

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Key words: isocyanates, polyurethane elastomers, thermogravimetry, static compression tests.

15. Elena SCORTANU and Cristina PRISACARIU

New heterocyclic polymers with vicinal parabanic structures.

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Key words: heterocyclization reaction, parabanic structure, thermal stability, transformation degree.

16. Simona MORARIU, Irina-Elena LĂMĂTIC and Maria BERCEA

Rheological behavior of smectite aqueous dispersions.

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Key words: bentonite, smectite, viscoelastic properties, clay dispersion.

17. Irina-Elena LĂMĂTIC, Maria BERCEA and Simona MORARIU

Intrinsic viscosity of aqueous polyvinyl alcohol solutions.

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Key words: polyvinyl alcohol, viscosity, Mark-Houwink relationship.

18. Constantin I. CHIRIAC, Fulga TANASA and Marioara NECHIFOR

A novel direct boron-mediated synthesis of cinnamic acids from aromatic aldehydes and aliphatic carboxylic acids.

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Key words: direct condensation reaction, sodium tetraborate-lithium chloride, cinnamic acids.

19.  Emil C. BURUIANĂ, Mirela ZAMFIR and Tinca BURUIANĂ

Evidence for a fluorescence enhancement of some dansyl and stilbene derivatives used as optical
chemosensors.

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Key words: stilbene, dansyl, fluorescence, “turn-on” sensors.

20.  Tinca BURUIANĂ, Violeta MELINTE, Florentina JITARU and Emil C. BURUIANĂ

Evaluation of some multifunctional monomers for use in dental purposes.

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Key words: dimethacrylate, carboxyl, dental formulation, mechanical parameters.

21.  Elena HAMCIUC, Corneliu HAMCIUC and Maria CAZACU

Comparative evaluation of some properties of two poly(ether-imide) thin films with/without fluorine in the structure.

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Key words: poly(ether-imide)s, thin films, thermal stability, contact angles, water vapors sorption capacity.

22.  Radu-Dan RUSU, Mariana-Dana DAMACEANU and Maria BRUMĂ

Comparative study of soluble poly(keto-naphthylimide)s.

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Key words: soluble poly(keto-naphthylimide)s, high thermostability, thin films, photoluminiscence.

23. Irina BACOŞCĂ, Elena HAMCIUC, Maria BRUMĂ and Marta SZESZTAY

Modified aromatic polyimides with flexible groups.

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Key words: polyimides, good solubility, thin films, thermal stability.

24. Marieta CONSTANTIN and Gheorghe FUNDUEANU

Cyclodextrin-containing poly(vinyl alcohol) as non-viral gene delivery systems. 1. Preparation of polymers.

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Key words: cationic polymers, poly(vinyl alcohol), β-cyclodextrin, gene delivery system.

25. Violeta NEAGU and Ion BUNIA

Synthesis and morphologic characterization of ethylacrylate : acrylonitrile : divinylbenzene
copolymers.

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Key words: acrylic copolymers, suspension polymerization, porous structure determination, swelling.

26. Sergiu COSERI

Diisocyanates reactivity with diols under pseudo-high dilution condition.

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Key words: diisocyanate, diol, reactivity, oligomer, alcohol.

27. Cornel MUNTEANU, Niculae I. IONESCU, Marcel FEDER, Lucian DIAMANDESCU and
Monica CĂLDĂRARU

Catalytic and electrical properties of iron oxide in deep propane oxidation.

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Key words: hematite, propane oxidation, electrical conductivity.

28. Mirela ENACHE and Elena VOLANSCHI

The influence of ionic strength on the binding of antitumor drug actinomycin D to double stranded DNA.

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Key words: actinomycin D, DNA binding, ionic strength.

29. Ioana STĂNCULESCU and Cezar BENDIC

In silico study of hydroxyl radical reaction with 1,2-dimethyl-1,2,3,4-tetrahydroisoquinolines.

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Key words: hydroxyl radical, tetrahydroisoquioline, transition state, AM1, IRC, CHN.

30. Marin MICUTZ, Teodora STAICU, Minodora LECA and Corneliu GHICA

Adsorption complexes of collagenous polypeptide-ionic surfactant in aqueous medium. 1. The formation of micellar structure of ionic surfactant adsorbed onto collagenous polypeptide chain.

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Key words: collagen, collagen hydrolyzate, polypeptide, ionic surfactant, adsorption complexes.

31. Dorin ŞULEA and Minodora LECA

Collagen-Thuja tincture biomaterials for wound treatment. 1. Analysis of the volatile fraction from Thuja columnaris tincture by GC/MS.

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Key words: volatile compounds of Thuja occidentalis var. columnaria tincture, GC-MS analysis, antimicrobial activity, wound treatment.

32. Mihaela Violeta GHICA, Mădălina Georgiana ALBU, Lăcrămioara POPA, Minodora LECA,
Lavinia BRĂZDARU, Cosmin COTRUŢ and Viorica TRANDAFIR

Drug delivery systems based on collagen-tannic acid matrices.

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Key words: collagen, tannic acid, FT-IR spectral characteristics, in vitro release, enzymatic degradation.

33. Ionel POPESCU, Akos REDEY, Ioan-Cezar MARCU, Bogdan POPESCU, Eva MAKO and Ioan SĂNDULESCU

Catalytic combustion of methane over unsupported and γ-Al2O3 supported Sr2FeTaO6  and Sr2Fe0.7Co0.3TaO6 double perovskites.

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Key words: double perovskites, methane, catalytic combustion.

34. Maria-Gabriela ALEXANDRU, Ioana JITARU, Polina BOUROSH, Constantin DRĂGHICI, Erwann JEANNEAU, Victor Ch. KRAVTSOV and Yurii A. SIMONOV

Two new hydrogen bonded networks obtained in MCl2·xH2O (M=Mn, Cu)- N,N’-ethylenebisacetamide system.

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Key words: N,N’-ethylenebisacetamide, cocrystals, Cu(II), Mn(II), tridimensional frameworks.

35. Alexandru CECAL, Florica IONICĂ, Gheorghe NEMŢOI and Karin POPA

Use of β-rays absorption in the study of steel corrosion.

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Key words: β-rays absorption, corrosive solutions, kinetics, steel, 204 Tl-radionuclide.

36. Cătălin LISA, Gabriela LISA and Silvia CURTEANU

Neural networks used for the prediction of the structure-thermal stability relation.

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Key words: feedforward neural networks, modular neural networks, thermal stability, polyimides.

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No 10, Octobre 2009

Tome 54, No 10 Octobre 2009

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1. Viorel BRÂNZOI, Luisa PILAN and Florina BRÂNZOI

Amperometric glucose biosensor based on electropolymerized carbon nanotube/polypyrrole composite film.

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Key words: nanocomposite films, polypyrrole, carbon nanotubes, amperometric biosensor, glucose.

2. Ioan BALDEA, Dana-Maria SABOU and Alexandra CSAVDARI

Oxidation of 2-mercaptopropionic acid by hexacyanoferrate-(III). Mechanistic interpretation on the basis of one-plus rate equation.

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Key words: thiol oxidation, hexacyanoferrate-(III), one-plus rate equation.

3. Alexandra MORARU, Istvan SVAB and Dan Florin MIHĂILESCU

Charmm force field parameterization of bacterial lipopolysaccharides.

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Key words: lipopolysaccharide, lipid A, Gram negative, outer membrane, molecular model.

4. Loredana Elena VIJAN

The interaction of vancomycin with DNA.

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Key words: vancomycin, calf thymus DNA, UV-Vis absorption.

5. Shoujun LAI, Xijun CHANG, Sui WANG, Jie MAO and Lei TIAN

Studies on the interaction between CdS quantum dots and organic dyes: absorbtion and fluorescence spectroscopy.

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Key words: quantum dots, organic dyes, reaction mechanism, spectrum.

6. Ali Reza ASHRAFI, Farhad REZAEI and Amir LOGHMAN

PI index of the C4C8(S)-nanotorus.

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Key words: PI index, C4C8(S) nanotorus.

7. Romana DRAŞOVEAN and Simona CONDURACHE BOTA

Influence of the conditions of the thermal treatment on the electrical properties of cobalt oxide layers.

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Key words: electrical properties, thin films, conductivity, thermal treatment.

8. Béla KISS, Daniela-Saveta POPA, Marius BOJIŢĂ, Felicia LOGHIN

Devepolment and validation of a HPLC-DAD/FLD method for the determination of MDMA, MDA, methamphetamine, morphine, morphine-glucuronides and 6-monoacetylmorphine in human plasma.

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Key words: heroin, morphine, metabolites, amphetamines, chromatography.

9. Ioan Marius MIHAESCU and Gabi DROCHIOIU

Cyanide reaction with ninhydrin: the effect of pH changes and UV-VIS radiation upon the analytical results.

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Key words: cyanide determination; pH effect; UV-Vis effect; ninhydrin reaction.

10. Daniela ISTRATI, Luminitza PÂRVULESCU, Angela POPESCU, Dan MIHĂIESCU, Elena ANDREI and Florin BADEA

Flow-vacuum pyrolysis of dibenzocycloheptane annelated derivative on zeolites catalysts.

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Key words: flow-vacuum pyrolysis, zeolite catalyst, dibenzocycloheptane derivatives.

No 9, Septembre 2009

Tome 54, No 9 Septembre 2009

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1. Ştefania RACOVIŢĂ, Silvia VASILIU, Marcel POPA and Cornelia LUCA

Polysaccharides based on micro- and nanoparticles obtained by ionic gelation and their applications as drug delivery systems.

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Key words: polysaccharides beads, ionotropic gelation method, drug delivery.

2. Eugen I. SEGAL

Applications of an algorithm to derive rate equations by means of kinetic graphs.

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Key words: kinetic graph, quasisteady state approximation, linear mechanism.

3. Doroteia VULPEŞ, Mihai V. PUTZ and Adrian CHIRIAC

QSAR study on the anaesthetic activity of some barbiturates and thiobarbiturates.

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Key words: QSAR, regression analysis, anaesthetic activity, electronic and geometric descriptors, model with predictive power.

4. Tanţa SPĂTARU

Electrochemical deposition of hydrous ruthenium oxide on conductive diamond films and its application to phenol oxidation in acidic media.

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Key words: hydrous ruthenium oxide, composite materials, conductive diamond, phenol oxidation.

5. Manuela MURARIU, Karin POPA, Ecaterina-Stela DRĂGAN and Gabi DROCHIOIU

Synthetic cysteine-peptide and its relation with heavy and radioactive metals.

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Key words: peptide synthesis, mass spectrometry, circular dichroism, atomic force microscopy, Mercury-203, radiotoxicity, glutathione.

6. Roxana DONE, Ioana STĂNCULESCU and Cristina MANDRAVEL

Actual trends in threshold limit values evaluation: application to halogen containing compounds using multilinear regression method.

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Key words: Threshold Limit Values (TLV’s); multilinear regression method (MLR); halogenated alkanes; molecular modeling.

7. Laura MUREŞAN, Mihaela NISTOR, Elisabeth CSÖREGI and Ionel Cătălin POPESCU

Reagentless amperometric biosensor for NADH detection.

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Key words: amperometric biosensors, NADOx, NADH detection, Os-redox polymer.

8. Daniela GRĂDINARU, Denisa MARGINĂ and Claudia BORŞA

In vitro studies regarding the antioxidant effects of procaine, Gerovital H3 and Aslavital.

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Key words: antioxidant, superoxide radical, conjugated dienes.

9. Viorica-Niculina STĂNESCU, Mihaela OLTEANU, Manuela FLOREA-SPIROIU and Zina VULUGA

Fractal properties of collagen/chitosan/montmorillonite membranes.

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Key words: fractal dimension, collagen, chitosan, montmorilonite.

10. Jae Young BAE, Tae Kwan YUN, Sung Soo HAN, Byung Gil MIN, Imre BAKO and Soong-Hyuck SUH

Fabrication and characteristics of variable crystalline TiO2 for photocatalytic activities.

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Key words: nanocrystalline, anatase, rutile, catalysis, photodegradation.

No 8, Août 2009

Tome 54, No 8 Août 2009

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1. Mihai CARAMIHAI, Ioan DUMITRACHE and Ana Aurelia CHIRVASE

Progress in characterization, modeling and control of aerobic bioprocess. Part II. Aerobic bioprocess modeling and control.

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Key words: aerobic bioprocess; modeling; control, case study.

2. Carmen LIMBAN, Alexandru-Vasile MISSIR, Ileana Cornelia CHIRIŢĂ, George Mihai NIŢULESCU, Constantin DRĂGHICI, Miron T. CĂPROIU, Mariana Carmen CHIFIRIUC and Olguţa Nicoleta DRĂCEA

New 2-(4-ethyl-phenoxymethyl)benzoic acid thioureides. Synthesis, spectral analyses and microbiological assay.

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Key words: 2-(4-ethyl-phenoxymethyl)benzoic acid thioureides, 1H-NMR, C-NMR , antimicrobial.

3. Rachid ZNIBER, Ahmed MOUSSAIF, Redouane ACHOUR, Mostafa EL GHOUL, Abdelkrim FILALI MALTOUF, Abdel Illah MEKKAK et Abdelkamel HARRATA

Activité biologique de dérivés du benzimidazole.

Biologic activity of benzimidazole derivatives.

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Key words: benzimidazole, Escherichia coli W 3350, DH 5α, bacillus subtillis, polyethylene glycols, catalyse par trasfert de phase.

4. Maria MRACEC, Alexandra GRUIA, Ana BOROTA, Ramona CURPĂN RAD, Liliana HALIP OSTOPOVICI and Mircea MRACEC

QSAR study of a series of quinoline derivatives active on the alpha2 adrenergic receptor subtypes.

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Key words: QSAR, MLR, quinoline derivatives, alpha2-adrenergic receptors.

5. Sergiu Adrian CHICU and Georgeta Maria SIMU

Hydractinia echinata test system. I. Toxicity determination of some benzenic, biphenylic and
naphthalenic phenols. Comparative SAR-QSAR study.

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Key words: phenols, Hydractinia echinata, M/Clog1/MRC50, Mlog1/IC50, ESIP, SAR, QSAR models, standard toxicity, limited isotoxicity, push-pull electronic mechanism, total molecular symmetry, pseudo-meta conjugation.

6. Emilia AMZOIU, Manuel Ovidiu AMZOIU and Paul Gabriel ANOAICA

Molecular descriptors for the study of lipophilicity in catecholamine class.

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Key words: partition coefficient, catecholamines, QSAR, molecular descriptors.

7. Mihaela AVĂDĂNEI, Elena Gabriela HITRUC and Cornelia LUCA

Spectral and AFM studies on UV-crosslinked films of poly(4-vinylpyridine) derivatives.

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Key words: poly(4-vinylpyridine), quaternized poly(4-vinylpyridine), photocrosslinking; photoresist.

8. Manuela CIOBANU, Cristina-Eliza BRUNCHI, Elena PERJU, Vasile COZAN and Maria BRUMĂ

New copoly(ether-imide-sulfone) oligomers having pendant ionic groups.

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Key words: polycondesation, copoly(ether-imide-sulfone), pendant ionic groups, viscosity.

9. Ioan CĂLINESCU, Daniel IGHIGEANU, Diana MARTIN, Constantin MATEI, Adrian TRIFAN and Constantin OPROIU

VOCs removal by combined use of electron beam, microwave and catalyst.

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Key words: Volatile Organic Compounds, electron beam, microwave, catalyst.

10. Dana GINGAŞU, Ioana MÎNDRU, Luminiţa PATRON, Lucian DIAMANDESCU, Corneliu Bazil CIZMAŞ and Ioana FIRĂSTRĂU

Lithium ferrites obtained by thermal decomposition of ureate complex compounds.

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Key words: lithium ferrite, XRD patterns, Mössbauer spectra.