Archive for 2011

No 12 Decembre 2011

Tome 56, No 12  Decembre 2011

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1.  Maria MIHEŢ and Vasile Mircea CRISTEA

Contributions to the model predictive control of the UOP fluid catalytic cracking unit

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Key words: catalytic cracking, dynamic simulator, model predictive control.

2.  Simona CONDURACHE-BOTA, Romana DRAŞOVEAN, Nicolae ŢIGĂU and Alicia Petronela RÂMBU

The influence of substrate temperature on the structure and on the optical reflection spectrum of bismuth thin films

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Key words: bismuth, vacuum thermal evaporation, XRD, grain size, reflectance

3. Luminiţa ISAC, Ionuţ POPOVICI and Anca DUŢĂ

Tailoring chemically sprayed CuxS films crystallinity

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Key words: copper sulfide films, spray pyrolysis deposition, crystallinity, electrical properties

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

A new efficient one-pot synthesis of 2,5-diaryl- 1,3,4-oxadiazoles

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Key words: one-pot synthesis, 2,5-diaryl-1,3,4-oxadiazoles, phosphoric acid, sodium borohydride

5.  Viorel CHIHAIA, Jose Maria CALDERON-MORENO, Nicolae STANICĂ, Viorica PARVULESCU, Mariuca GARTNER and Soong-Hyuck SUH

Thermodynamic and structural properties of penetrable-sphere systems: theory and simulation

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Key words: penetrable-sphere fluid, molecular dynamics simulation, statistical thermodynamic theory

6. Daniela BALA, Petronia DASU and Constantin MIHAILCIUC

Electrochemical behaviour of potassium hexacyanoferrates (II) and (III) in middle phase microemulsion

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Key words: electrochemistry in MPME, cyclic voltammetry, diffusion coefficients, active working electrode area

7. Bianca MARANESCU, Aurelia VISA, Smaranda ILIESCU, Adriana POPA, Gheorghe ILIA, Valentin MARANESCU, Zeno SIMON and Mircea MRACEC

Structural properties of Ni2+ vinylphosphonate using PM3 semi-empirical analysis

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Key words: metal organic frameworks, PM3 semi-empirical, vinylphosphonates, structural properties, electric properties

8.  Cristina TĂNASE, Ana Aurelia CHIRVASE, Camelia UNGUREANU, Mihai CARAMIHAI and Ovidiu MUNTEAN

Study of double-substrate limited growth of Pseudomonas aeruginosa in aerobic bioprocess

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Key words: Pseudomonas aeruginosa, aerobic growth, double-substrate limited growth kinetics.

9.  Mihail CONTINEANU, Iulia CONTINEANU, Ana NEACŞU and Adina-Elena STANCIU

EPR study of paramagnetic centers in gamma irradiated polycrystalline ammonium paramolybdate (APMO) and ammonium parawolframate (APW)

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Key words: gamma irradiation, free radicals, paramagnetic centers, unpaired electron, hyperfine splitting.

10.  Beatrice-Anamaria TEODORU, Angela POPESCU, Daniela ISTRATI, Luminitza PÂRVULESCU, Constantin DRAGHICI, Dan MIHAIESCU and Florin BADEA

Thermal decomposition of polycyclic acetates over HZSM-5 zeolite in flow-vacuum conditions

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Key words: flow-vacuum pyrolysis, polycyclic acetates, HZSM-5 zeolite catalyst

No 10-11 Octobre-Novembre 2011

Tome 56, No 10-11  Octobre-Novembre 2011

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ROMPHYSCHEM-14, June 2-4, 2010: the crisis edition

Dr. Vlad Tudor Popa “Ilie Murgulescu” Institute of Physical Chemistry

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1. Irina DUMITRIU, Radu Claudiu FIERĂSCU, Raluca Ioana BUNGHEZ, Simona Florentina POP, Sanda Maria DONCEA, Mihaela Lucia ION and Rodica Mariana ION

Analytical methods for artefacts complex analysis

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Key words: artefacts, analytical methods, spectroscopic techniques, radiation-based techniques

2. Carmen RACLEŞ, Mihaela ALEXANDRU, Alexandra NISTOR and Maria CAZACU

Surface properties of siloxane-based surfactants containing tromethamol units

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Key words: siloxane, surfactants, wetting behaviour, dynamic vapor sorption.

3. Maria IGNAT and Evelini POPOVICI

Synthesis of mesoporous carbon materials via nanocasting route – comparative study of glycerol and sucrose as carbon sources

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Key words: nanocasting, carbon precursor, mesoporous carbon.

4. Nicolae DOCA, Nicolina POP, Alin MOGOŞ, Paul ALBU and Titus VLASE

Selective activation of heterogeneous systems: a consequence of the Jahn-Teller effect

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Key words: activation mechanism, Morse oscillators, vibrational energy transfer, supersymmetry, thermal decomposition

5. Adriana FULIAŞ, Alina BOBRIC, Gabriela VLASE, Titus VLASE and Nicolae DOCA

Thermal stability and biological interactions of some cephalosporins

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Key words: cephalosporins, thermal behaviour, Drosophila melanogaster

6.  Adriana FULIAŞ, Nicolae DOCA, Gabriela VLASE, Bogdan TIŢA, Dumitru TIŢA and Titus VLASE

Thermal decomposition kinetics of cefadroxil

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Key words: cefadroxil, thermal analysis, kinetic parameters, NPK method.

7. Liana Simona SBÎRNĂ, Aurora REISS, Anisoara PREDA, Florina CIOLAN and Irina NICOLAESCU

Stereochemistry of various complexes containing a bidentate Schiff base that is able to change denticity

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Key words: complex compounds, Schiff bases, bi- and tridentate ligands, changeable, denticity, tetra- and hexa-coordination, d8 and d10 metal ions

8. Liudmila GUSINA, Ion BULHAC, Diana DRAGANCEA, Yurii A. SIMONOV and Sergiu SHOVA

Structural and spectroscopic characterization of dioxomolybdenum(VI) complexes with Schiff bases derived from isonicotinoylhydrazide

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Key words: Schiff base ligands, molybdenum(VI) complexes, X-Ray structure

9. Dan CONSTANTINESCU,Mariella CONSTANTINESCU, Constanţa MARIN-PERIANU, Horia PETRAN, Cristian PETCU, Angela-Gabriela CARACAŞ and Elena Maria ANGHEL

Principles and method of determining the thermal diffusivity of homogeneous and isotropic materials

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Key words: thermal diffusivity, conduction heat transfer, sensitivity analysis, unitary thermal response

10.  Bogdan TUTUNARU, Adriana SAMIDE, Adina CIUCIU and Ioana PRUNARU

The effect of N-(2-hydroxybenzilidene) thiosemicarbazide on corrosion resistance of electrodeposited tin layer onto carbon steel in acidic media

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Key words: tin coatings, electro-deposited, N-(2-hydroxybenzilidene) thiosemicarbazide, surface structure, SEM.

11.  Nicoleta CIOATERĂ, Adriana SAMIDE, Aurelia MAXUT, Rose-Noëlle VANNIER and Michel TRAISNEL

Electrodeposition of Ni-Ceria nanocomposite coatings and their corrosion behavior

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Key words: electrodeposition, nanostructured ceria, nickel, composite coating, corrosion resistance.

12.  Maria-Laura SOARE, Magdalena-Rodica BUJDUVEANU, Eleonora-Mihaela UNGUREANU, Emilian GEORGESCU and Liviu BIRZAN

Comparative electrochemical studies on substituted benzoyl indolizine-1-carboxylates

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Key words: ethyl 3-(4-bromobenzoyl) indolizine-1-carboxylate, ethyl 3-(4- chlorobenzoyl) indolizine-1-carboxylate, ethyl 3-(4- methylbenzoyl) indolizine-1-carboxylate, cyclic voltammetry, differential pulse voltammetry

13.  Gabriela Maria OPREA, Angela Mariana MICHNEA and Cristina MIHALI

Adsorption kinetics of 8-hydroxyquinoline on smithsonite

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Key words: smithsonite, kinetic, 8-hydroxyquinoline, adsorption.

14. Dan CONSTANTINESCU,46 Mariella CONSTANTINESCU, Horia PETRAN, Cristian PETCU, Angela-Gabriela CARACAŞ and Elena Maria ANGHEL

Analysis on the thermal behaviour of the thermal storage units for phase change materials

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Key words: Stefan equation, phase change, latent heat, phase change front velocity.

15.  Gheorghe TOMOAIA, Maria TOMOAIA-COTISEL, Lacrimioara-Bianca POP, Alexandru POP, Ossi HOROVITZ, Aurora MOCANU, Nicolae JUMATE and Liviu-Dorel BOBOS

Synthesis and characterization of some composites based on nanostructured phosphates, collagen and chitosan

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Key words: hydroxyapatite, silicon substituted hydroxyapatite, nanopowders, collagen, chitosan

16.  Maria TOMOAIA-COTISEL, Roxana-Diana PASCA, Ossi HOROVITZ and Aurora MOCANU

Surface potentials of cholesterol and dimyristoyl phosphatidylcholine monolayers at the air/water interface

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Key words: dimyristoyl phosphatidylcholine, DMPC, cholesterol, monolayers, surface potential, dipole moments.

17.  Veronica BRĂTAN, Paul CHESLER, Anca VASILE, Ligia TODAN, Maria ZAHARESCU and Monica CĂLDĂRARU

Surface properties and catalytic oxidation on V2O5-CeO2 catalysts

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Key words: CeVO4, electrical conductivity, EPR, UV-Vis, propylene oxidation

18.   Dora LUCACI, Maria VIŞA and Anca DUŢĂ

Copper removal on wood–fly ash substrates – thermodynamic study

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Key words: sawdust, biosorption, heavy metals, wastewater treatment

19.  Ionuţ POPOVICI, Dana PERNIU, Luminiţa ISAC, Raluca CIOC and Anca DUŢĂ

Surfactant assisted control over morphology and surface properties of sprayed TiO2 thin films

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Key words: TiO2, spray pyrolysis deposition, surfactant, morphology

20.  L. V. EL’NIKOVA

Lattice model calculations on aqueous solutions of acetone and tetramethylurea

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Key words: aqueous acetone, aqueous tetramethylurea, mixing schemes, lattice modeling, Monte Carlo

No 9 Septembre 2011

Tome 56, No 9  Septembre 2011

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1. Anca PETER, Monica MARIAN, Camelia NICULA, Leonard MIHALY-COZMUTA, Anca MIHALY-COZMUTA and Emil INDREA

The sorptive performance of micrfoorganisms- zeolite systems to remove Cu2+, Zn2+, Cd2+, Fe2+ and Pb2+

 

 

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Key words: metal ions, sorption kinetics modeling, microorganisms and microorganisms-zeolite systems

2.  Niculae I. IONESCU

Role of the non-reactive adsorbed species in the heterogeneous catalytic oscillatory reactions

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Key words: non-reactive adsorbed species, oscillations.

3. Mihaela VLASSA, George BORODI, Alexandru BIRIŞ, Gabriela BLĂNIŢĂ, Mircea VLASSA and Cristian SILVESTRU

Characterization by vibrational spectroscopy of coordination polymers obtained from CuII, NiII and ZnII cyclam perchlorate and amaranth

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Key words: coordination polymer, cyclam, self-assembly, azo dye, IR and Raman spectrometry.

4. Amalia ŞTEFANIU, Olga IULIAN and Oana CIOCIRLAN

 

Density, viscosity and refractive index of L-alanine and L-histidine in aqueous NaCl solutions at 298.15 K

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Key words: amino acid, apparent molar volume, viscosity

 

5.  Teodor SANDU, Andrei SÂRBU, Floriana CONSTANTIN, Emilia OCNARU, Silviu VULPE, Anca DUMITRU and Horia IOVU

Polyphenol oxidase immobilization on functionalized polypyrrole

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Key words: polypyrrole, polyphenol oxidase, covalent immobilization.

 

6. Viorel BRÂNZOI, Ancuta MUSINĂ, and Florina BRÂNZOI

 

 

 

Amperometric urea biosensor based platinum electrode modified with a composite film

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Key words: amperometric biosensor, polyaniline, composite films, modified electrode, Cyclic voltammetry, and Scanning electron microscopy (SEM).

7. Lucia GÂNSCĂ, Sanda MAXIM, Irina CIOTLĂUŞ, Adriana ANDREICA and Ioan OPREAN

 

Exo- and endohormones. XXV. Synthesis of an isomeric mixture of (8E,10Z)-8,10-tetradecadien-1-al, sexual attractant for horse chestnut leafminer Cameraria ohridella (lepidoptera, gacillariidae)

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Key words: (8E,10Z)-8,10-tetradecadien-1-al, Grignard-Schlosser cross- coupling reaction, sex pheromone, Cameraria ohridella species.

8.  Oana CARP, Diana VISINESCU, Greta PATRINOIU and Alina TIRSOAGA

Green synthetic strategies of oxide materials: polysaccharides-assisted synthesis. Part IV. Alginate-assisted synthesis of nanosized metal-oxides

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Key words: alginate, polysaccharides, metal oxide, green synthesis.

9.  Claudiu IONESCU, Marioara ABRUDEANU, Pierre PONTHIAUX, François WENGER and Vasile RIZEA

 

Eggect of normal force on tribocorrosion behaviour of Ni – 30Cr model alloy in LiOH – H3BO3 solution

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Key words: tribocorrosion, wear, Ni – 30Cr model alloy.

10.  Florina CONSTANTIN, Jean-Pierre MILLET, Marioara ABRUDEANU and Gabriela-Adriana PLĂIAŞU

 

Influence of a cooling liquid on the corrosion behaviour of AlMn alloy

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Key words: aluminium-manganese alloy, corrosion inhibitor, tolyltriazole, intermetallic particles.

No 8 Août 2011

Tome 56, No 8  Août 2011

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1. Cristina DONATH, Elena NEACSU and Niculae ENE

Cyclic voltammetry of iron ions in molten halides electrolytes

 

 

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Key words: molten electrolyte, electrochemistry, cyclic voltammetry, electrode processes.

2. Mino R. CAIRA, Florea DUMITRASCU, Emilian GEORGESCU, Florentina GEORGESCU, Marcel Mirel POPA

New pyrroles from quinazolinium N1-ylides and acetylenic dipolarophiles

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Key words: pyrroles, quinazolinium N-ylides, 1,3-dipolar cycloaddition, X-ray analysis

3. Elena NEAGU, Gabriela Paun ROMAN and Gabriel Lucian RADU

Antioxidant capacity of some Salvia officinalis concentrated extracts

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Key words: Salvia officinalis, ultrafiltration, polyphenols, DPPH, ABTS

4. Adriana ADOCHITEI and Gabi DROCHIOIU

 

Rapid characterization of peptide secondary structure by FT-IR spectroscopy

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Key words: FT-IR, protein structure, peptide conformation, CD spectroscopy

5. Simona VARVARA, Ileana ROTARU, Maria POPA and Liana Maria MUREŞAN

 

Inhibition of bronze corrosion in aerated acidic solution using amino acids as environmentally friendly inhibitors

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Key words: bronze, corrosion, amino acids, polarisation curves, electrochemical impedance spectroscopy

 

6.  Rodica NIŢOI

The effect of the Ce(III)-iodate interactions in the Briggs-Rauscher oscillating reaction

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Key words: Ce(III)-Iodate interactions, [CeIII (IO3)n]3-n , H2O2 decomposition

 

7.  Dorin ŞULEA, Marin MICUTZ, Mădălina Georgiana ALBU, Teodora STAICU, Minodora LECA, Lăcrămioara POPA and Mihaela Violeta GHICA

 

 

 

Collagen-Thuja tincture biomaterials for wound treatment. 3. Hydrogels containing thuja tincture and chlorhexidine digluconate

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Key words: collagen hydrogels with CHDG and thuja tincture, FT-IR, UV-CD, rheology, CHDG delivery

8. Daniel MARECI, Sorin Iacob STRUGARU, Corneliu MUNTEANU, Radu TĂRNĂUCEANU and Daniel SUTIMAN

 

Corrosion performance of plasma nitrided austenitic stainless steel in phosphate solutions at pH=6.0

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Key words: austenitic stainless steel, microhardness, open circuit potential, potentiodynamic polarization, SEM, EIS

9.  Viorica-Niculina STĂNESCU, Mihaela OLTEANU, Manuela FLOREA-SPIROIU, Elena PINCU and Viorica MELTZER

Starch/chitosan film forming hydrogel

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Key words: chitosan, starch, alkylpolyglucoside, film forming hydrogel.

10.  Maria MERNEA, Octavian CĂLBOREAN, Andrei TIŢA and Dan Florin MIHAILESCU

 

Pro206Ser and Arg441His mutations influence on human tryptophan hydroxylase 2 activity – a molecular modeling study

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Key words: TPH2, bipolar disoeder, catalytic site, flexibility, structural model.

No 7 Juillet 2011

Tome 56, No 7 Juillet 2011

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1. Doina DIMONIE, Constantin RADOVICI, Inna TRANDAFIR, Simona Florentina POP, Irina DUMITRIU, Radu FIERASCU, Luiza JECU, Celina PETREA, Catalin ZAHARIA and Ramona COŞEREA

Some aspects concerning the silicate delamination for obtaining polymeric bio-hybrids based on starch

 

 

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Key words: bio-hybrids, nanocomposites, starch, polyvinyl alcohol, multilayered silicate, plasticizer, melt processing

2. Emilian GEORGESCU, Denisa DUMITRESCU, Florentina GEORGESCU, Constantin DRAGHICI and FloreaDUMITRASCU

Pyrrolo[2,1-a]isoquinoline derivatives via 1,3-dipolar cycloaddition of isoquinolinium N-ylides (II)

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Key words: isoquinolinium N-ylides, acrylonitrile, crotononitrile, TPCD:Py4Co(HCrO4)2, pyrrolo[2,1-a]isoquinoline

3.  Daniel MARECI, ManuelaROMAŞ, Adrian CĂILEAN and Daniel SUTIMAN

Electrochemical studies of cobalt-chromium- molybdenum alloys in artificial saliva

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Key words: CoCrMo alloys, open circuit potential, potentiodynamic polarisation curves, EIS, optical microscopy

4. Lucia GÂNSCĂ, Adriana ANDREICA, Irina CIOTLĂUŞ, Sanda MAXIM and Ioan OPREAN

 

Exo- and endohormones. XXIV. A convenient synthesis of (Z)-11-tetradecen-1-yl acetate, component of Lepidoptera insect sex pheromone

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Key words: (Z)-11-tetradecene-1-yl acetate, synthesis, sex pheomone, Lepidoptera

5. Emilia AMZOIU, Paul Gabriel ANOAICA and Costinel I. LEPĂDATU

 

QSAR study of toxicity of aromatic nitroderivatives using the electronegativity of OMO/UMO states as fingerprint descriptors

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Key words: aromatic nitroderivatives, toxic activity, electronegativity descriptor.

 

6. Mihaela DUDIŢĂ, Cristina BOGATU, Alexandru ENEŞCA and Anca DUŢĂ

Thin films of SnO2 obtained electrochemically from surfactants containing electrolytes

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Key words: tin oxide, surfactant, anodic oxidation, morphology

 

7.  Cornelia ILIE, Stela IANCU, Monica DULDNER and Dan F. ANGHEL

 

Water-dispersible, biodegradable copolyesters from PET wastes. I. Investigation of hydrophilic character

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Key words: PET waste, chemical recycling, aliphatic-aromatic copolyesters, water dispersible, biodegradable copolyesters

8. Lidia VARVARI, Vasilica LATEŞ and Ionel Cătălin POPESCU

 

Determination of antioxidant capacity using xanthine-xanthine oxidase system coupled Os(III) with H2O2 amperometric biosensor

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Key words: antioxidant capacity, hydrogen peroxide, xanthine oxidase, superoxide dismutase, ascorbic acid

9.  Georgiana BOLAT, Daniel SUTIMAN and Gabriela LISA

Excess molar volumes of binary mixtures (acetic acid + water, benzene, N-hexane and N-heptane) at several temperatures

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Key words: density, binary mixtures, acetic acid, molecular interactions

10.  Cătălin VASILESCU, Mircea OLTEANU and Paul FLONDOR

 

Description of the reconditioning effect in biology by means of fractal-like enzyme kinetics of intracellular reactions

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Key words: fractal-like kinetics, preconditioning, endotoxin tolerance

No 6 Juin 2011

Tome 56, No 6 Juin 2011

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1.  Catalysis in Roumania 2011

 

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2. Gabriela BLĂNIŢĂ, Ovidiu ARDELEAN, Dan LUPU, Gheorghe BORODI, Maria MIHEŢ, Maria COROŞ, Mircea VLASSA, Ioan MIŞAN, Ioan COLDEA and Gabriel POPENECIU

Microwave assisted synthesis of MOF-5 at atmospheric pressure

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Key words: metal-organic framework, MOF-5, microwave synthesis at ambient pressure

3.  Emil INDREA, Ecaterina BICA, Elisabeth-Jeanne POPOVICI, Ramona-Crina SUCIU, Marcela Corina ROŞU and Teofil-Danuţ SILIPAŞ

Rietveld refinement of power X-ray diffraction of nanocrystalline noble metals – tungsten trioxide

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Key words: photocatalysts, tungsten trioxide, sol-gel, microstructure, Rietveld method

4. Natasza KRAWCZYK, Izabela WITOŃSKA, Aleksandra KRÓLAK, Magdalena FRAJTAK and Stanisław KARSKI

 

Catalytic hydrogenation of nitrates on Pd-In/TiO2 catalysts

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Key words: nitrate removal, Pd-In/TiO2 catalysts, catalytic denitrification.

5. Marcela-Corina ROŞU, Ramona-Crina SUCIU, Simina-Virginia DREVE, 3.0 Teofil-Dănuţ SILIPAŞ, Ioan BRATU and Emil INDREA

 

The influence of TiO2 content in preparation of TiO2/ITO nanostructured films

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Key words: TiO2, photocatalyst, photocatalytic activity, nanostructured films

 

6. Ramona-Crina SUCIU, Marcela-Corina ROŞU, Teofil-Dănuţ SILIPAŞ, Alexandru Radu BIRIŞ, Ioan BRATU and Emil INDREA

TiO2 thin films prepared by spin coating technique

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Key words: sol-gel, titanium diethanolamine complex, photocatalysts, microstructure, TiO2

 

7.  Emil INDREA, Ramona-Crina SUCIU, Marcela-Corina Roşu and Teofil-Dănuţ SILIPAŞ

 

Rietveld analysis of nanocristalline titania prepared by sol-gel method

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Key words: photocatalysts, nanocrystalline titania, sol-gel, microstructure, Rietveld method

8. Vladislav V. STYROV and Sergei V. SIMCHENKO

 

A means for insight into the nonequlibrium electronic processes during heterogeneous chemical reactions

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Key words: selenium, p-n junction, chemicurrent, atomic hydrogen, nonequilibrium states in catalysis

9.  Aleksandra KRÓLAK, Izabela WITOŃSKA, Natasza KRAWCZYK, Magdalena FRAJTAK and Stanisław KARSKI

Stability of Pd/SiO2 and Pd-Tl/ SiO2 catalysts in hydrodechlorination of 2,4-dichlorophenol

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Key words: catalytic dehydrogenation, Pd-Tl/SiO2 catalysts, hydrodechlorination of 2,4-dichlorophenol

10.  Magdalena FRAJTAK, Izabela WITOŃSKA, Aleksandra KRÓLAK, Natasza KRAWCZYK and Stanisław KARSKI

The influence of tellurium addition to supported palladium catalysts on their catalytic properties in glucose oxidation

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Key words: catalytic oxidation, Pd-Te/SiO2 catalysts, oxidation of glucose

11. Mihaela D. LAZAR, Monica DAN, Maria MIHET, Valer ALMASAN, Vasile REDNIC and George BORODI

 

Hydrogen production by low temperature methane steam reforming using Ag and Au modified alumina supported nickel catalysts

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Key words: hydrogen, methane steam reforming, Ni-Au catalysts, Ni-Ag catalysts

12.  Monica DAN, Mihaela D. LAZAR, Vasile REDNIC, Valer ALMASAN

 

Methane steam reforming over Ni/Al2O3 promoted by CeO and La O

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Key words: hydrogen, methane steam reforming, oxide promoted Ni catalysts

13.  Stefania ŞIMON, Alexandru R. BIRIŞ, Dan M. LUPU, Ioan MIŞAN, Alexandru S. BIRIŞ, Simona CLICHICI and Cornel IANCU

 

Carbon nanotubes via catalytic chemical vapor deposition method using induction heating – an advantageous route

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Key words: RF-CCVD, EF-CCVD, MWCNT, SWCNT

14.  Ovidiu ARDELEAN, Gabriela BLĂNIŢA, Maria MIHEŢ, Ioan COLDEA, Dan LUPU, and Petru PALADE

Supported Pt and Pd catalysts as additive for hydrogen adsorption enhancement in MOFs

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Key words: metal-organic frameworks, spillover, hydrogen adsorption

15. Maria MIHEŢ, Mihaela D. LAZĂR, Valer ALMĂŞAN and Gheorghe BORODI

 

Low temperature hydrogen selective catalytic reduction of NO and Pd/Al O 23

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Key words: NOx, H2-SCR, Pd/Al2O3, NO-TPD

16.  Adriana VULCU, Camelia BERGHIAN GROSAN, Maria CHIRIAC and Valer ALMASAN

 

The 15N labelled L-glutamic acid: experimental and computational NMR studies

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Key words: L-[15N]-glutamic acid, biosynthesis, NMR, DFT, B3LYP

17.  Ahmed MOUSSAIF, Roberto MARTIN, Youssef RAMLI, Rachid ZNIBER, Redouane ACHOUR, Mostafa EL GHOUL, Mercedes ALVARO and Hermenegildo GARCIA

 

 

Chiral bis(oxazoline)copper(II) covalently anchored to single wall carbon nanotube as recoverable catalyst for enantioselective Friedel- Crafts hydroxyalkylation

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Key words: single wall carbon nanotubes, soluble single wall carbon nanotubes, enantioselective catalysts, chiral bisoxazolines, recoverable homogeneous catalysts

No 5 Mai 2011

Tome 56, No 5 Mai 2011

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In memoriam Dr. Henry V. KEHIAIAN (1929–2009)

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1. Bruno MARONGIU, Silvia PORCEDDA, Alessandra PIRAS, Danilo FALCONIERI, Maria Rosaria TINÉ

 

The DISQUAC model

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Key words: thermodynamic properties, theoretical model, organic mixtures

2. Susana MIHAIU, Irina ATKINSON, Oana MOCIOIU, Alexandra TOADER, Ecaterina TENEA and Maria ZAHARESCU

Phase formation mechanism in the ZnO-SnO2 binary system

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Key words: SnO2-ZnO binary system, inverse spinel Zn2SnO4, X-ray diffraction, FT-IR spectroscopy

3.  Bianca MARANESCU, Aurelia VISA, Maria MRACEC, Gheorghe ILIA, Valentin MARANESCU, Zeno SIMON and Mircea MRACEC

Lamellar Co2+ vinylphosphonate metal organic framework. PM3 semi-empirical analysis of structural properties

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Key words: vinylphosphonates, metal organic frameworks, PM3 semi-empirical, structural properties, electric properties.

4. Niculae I. IONESCU

 

Kinetics of gas desorption from solid surfaces

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Key words: desorption solid-gas, logarithmic law

5. Dana DRĂGOESCU, Alexandru BÂRHALĂ and Mariana TEODORESCU

 

Vapour-liquid equilibria for the binary mixtures of methyl ethyl ketone (2-butanone) + some chloroalkanes at temperatures from 298.15 to 318.15 K. Comparisons with DISQUAC model prediction

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Key words: vapour-liquid equilibria, excess Gibbs energy, mixtures, 2-butanone, chloroalkanes, DISQUAC model.

6. Viorel SASCA, Orsina VERDEŞ, Livia AVRAM, Alexandru POPA, Paul BARVINSCHI and Mircea MRACEC

Non-isothermal kinetic study of the constitutional water loss from 12-tungstophosphosric acid and some of its acidic cesium salts

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Key words: non-isothermal kinetic study, tungstophosphoric acid, acid cesium tungstophosphate, constitutional water loss.

 

7.  Viorel FEROIU and Dan GEANĂ

 

Properties of pure refrigerants and refrigerant mixtures from cubic equations of state

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Key words: equation of state, vapour-liquid equilibrium, volumetric properties, refrigerants

8. Ioana SISU, Eugen SISU and Georgeta Maria SIMU

 

Modified polysaccharides with azoic chromophores. 1. Hydrophylic diaminodiphenil methane dye

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Key words: maltodextrine, reductive aminations, 4,4’-diaminodiphenylmethane monoazoic dye, hydrophylic dye, H acid, R acid

9.  Loredana E. NITA, Aurica P. CHIRIAC, Manuela T. NISTOR and Iulia STOICA

Biomaterials based on 2-hydroxyethyl methacrylate: the influence of the initiator type

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Key words: hydroxyethyl methacrylate, 3, 9 – divinyl – 2, 4, 8, 10 -tetraoxaspiro [5.5] – undecane, polymerization

10.  Simona MORARIU and Maria BERCEA

Clustering in poly(oxyethylene) aqueous solutions

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Key words: poly(oxyethylene), Huggins constant, viscoelastic properties, cluster.

11. Cristina STOICESCU, Olga IULIAN and Raluca ISOPESCU

 

Liquid-liquid phase equilibria of (1-propanol + water + n-alcohol) ternary systems at 294.15 K. I. 1-propanol + water + 1-butanol or 1-pentanol or 1-hexanol

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Key words: LLE data, water + n-alcohols ternary systems, UNIQUAC model, extraction solvents

12.  Cristina STOICESCU, Olga IULIAN and Raluca ISOPESCU

 

Liquid-liquid phase equilibria of (1-propanol + water + n-alcohol) ternary systems at 294.15 K. II. 1-propanol + water + 1-heptanol or 1-octanol or 1-nonanol or 1-decanol

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Key words: LLE data, water +1-propanol+ superior n-alcohols ternary systems, extraction solvents

13.  Anca FEDELEŞ, Oana CIOCÎRLAN and Olga IULIAN

 

Viscometric studies of binary dimethyl sulfoxide + 1-hexanol system

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Key words: viscosity, excess functions, DMSO, 1-hexanol.

No 4 Avril 2011

Tome 56, No 4 Avril 2011

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Professor Alexandru T. Balaban’s 80th anniversary

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1. Liliana M. PĂCUREANU, Ludovic KURUNCZI and Zeno SIMON

 

Quantum chemistry approaches to ligand-receptor interactions in Timişoara

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Key words: quantum chemistry, aqueous solutions, saline bond, hydrogen bonds.

2. Carmen I. MITAN, Valerian DRAGUTAN and Ileana DRAGUTAN

New insights into the mechanism of alkene metathesis

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Key words: alkene, metathesis, RCM mechanism, Ru-alkylidene, Ru-methylidene

3.  Claude NICOLAU

Conformation specific therapeutic vaccines against protein misfolding diseases

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Key words: Alzheimer Disease, conformation-sensitive antibodies, liposomes, memory recovery, transgenic mice

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

 

Reactions of pyrylium perchlorates having long alkyl substituents with aminoacids

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Key words: pyrylium and pyridinum perchlorates, aminoacids

5. Alexandru C. RAZUS, Liviu BIRZAN, Victorita TECUCEANU, Mihaela CRISTEA and Anamaria HANGANU

 

Benzo- and dibenzo-crown ethers substituted with (azulene-1-yl)-imino or (azulene-1-yl)-carbonyl groups

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Key words: azulene, (di)benzo-crown ethers, Schiff bases, acylation

6. Constantin TANASE, Florea G. COCU, Miron T. CAPROIU, Constantin DRAGHICI, Ionela Victoria NEAGOE and Gina MANDA

Synthesis of new oxabicyclo[3.3.0]octane nucleoside analogues with pyrimidine bases

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Key words: oxabiciclo[3.3.0]octane nucleoside, Vorbruggen nucleoside synthesis, antineoplastic activity

 

7. Adrian BETERINGHE, Ana Cristina RĂDUŢIU, Marioara BEM, Rodica Daniela BĂRĂŢOIU, Elena-Nuşa HRISTEA and Titus CONSTANTINESCU

 

Partial least squares (PLS) analysis for hydrophile-lipophile balance (HLB) of some nonionic surfactants. QSPR study

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Key words: PLS, HLB, QSPR, non-ionic surfactants, Griffin method

8. Adina ROGOZEA, Florenta SAVONEA, Agneta CARAGHEORGHEOPOL, Ioneta-Codrina BUJANCA and
Mihai DIMONIE

 

Soap free emulsion polymerization. A spin probe study of the colloid system in the early stages of reaction

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Key words: EPR, polymerization mechanism, surface-active oligomers, local viscosity

9.  Romică SANDU and Mihaela HILLEBRAND

Circular dichroism characterisation of the inclusion complexes of 2-acetyl-phenoxathiin sulphone with cyclodextrins: experimental data and TDDFT calculations

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Key words: induced circular dichroism, cyclodextrin complexes, phenoxathiin-sulphone derivatives, TDDFT calculations

10. Maria MRACEC, Tudor I. OPREA and Mircea MRACEC

Models of the algistatic activity of 5-amino-1-aryl-1H-tetrazoles

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Key words: CoMFA, MTD, PLS, MLR, algistatics

11. Dorina CASONI and Costel SÂRBU

 

Modeling of food preservatives chromatographic lipophilicity applying genetic algorithm and multiple linear regression

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Key words: lipophilicity, QSPR, multiple linear regression, genetic algorithms, food preservatives

12.  Alexandru CECAL, Liliana AIRINEI, Gheorghe NEMŢOI and Florica IONICĂ

 

The study of corrosion reactions by means of a radiometric technique

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Key words: β-rays, corrosion kinetics, radiometric technique, steels, voltammograms

13.  Gabriela TATARU, Marcel POPA and Jacques DESBRIERES

 

Microparticles of hydrogels type based on carboxymethylcellulose and gelatin for controlled release of water soluble drugs

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Key words: microparticles, interpenetrated network, carboxymethylcellulose, gelatin, hydrogel

14. Mircea GRIGORAS, Loredana VACAREANU and Teofilia IVAN

 

Synthesis of a triphenylamine-based macrocycle with rhombimine shape

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Key words: Schiff base compounds, [2+2] macrocycles, rhombimine and rhombamine macrocycles, solution interconvertable conformation

15.  Constantin I. CHIRIAC, Fulga TANASĂ and Marioara NECHIFOR

 

Sodium tetraborate-dibenzo-18-crown ether-6 complex as reagent in the synthesis of cinnamic acids from aromatic aldehydes and aliphatic carboxylic acids

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Key words: synthesis, cinnamic acids, sodium tetraborate-dibenzo-18-crown ether-6 complex

16.  Cristina PRISACARIU, Elena SCORTANU and Victor A. PRISACARIU

 

Improvement of polyurethane elastomer products performance via control of chemical structure

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Key words: polyurethanes, mechanical properties, thermal behavior, structural studies, flexible hard segments

17.  Cristina PRISACARIU and Elena SCORTANU

 

A study of stress relaxation processes in selected segmented polyurethane elastomers

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Key words: segmented polyurethane elastomers, stress relaxation, inelasticity

18. Ruxandra GHEORGHE, Carmen TISEANU and Marius ANDRUH

 

 

 

 

Homobinuclear 4f-4f complexes with 2,6- diformyl-4-methyl-phenol: investigation of luminescence properties

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Key words: lanthanide, complexes, europium, terbium, luminescence, homobinuclear complexes

No 3 Mars 2011

Tome 56, No 3 Mars 2011

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1. Irina POPESCU, Dana Mihalea SUFLET, Irina Mihaela PELIN and Gabrielle Charlotte CHIŢANU

Biomedical applications of maleic anhydride copolymers

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Key words: maleic anhydride copolymers, antitumor activity, controlled drug delivery

2. Namrata Tripathi SHALINI and Vinod Kumar SHARMA

Synthesis, characterization and biological aspects of iron(III) and cobalt(III) complexes with Schiff bases derived from substituted mercaptotriazole

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Key words: iron(III), cobalt(III), mercaptotriazole, spectroscopic studies, antifungal activity

3. Narges SAMADANI LANGEROODI and Vida JODAIAN

Isomerization of chloro-olefins of allyl structure by heterogeneous catalysis

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Key words: Fe2O3, chloroalkenes, isomerization, Mössbauer spectroscopy

4. Florica Papa, Dana GINGAŞU, Luminiţa PATRON, Akane MIYAZAKI and Ioan BALINT

Impact of the catalyst basicity on the mechanism of OCM reaction performed over alkaline Nd2O3 mixed oxides

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Key words: oxidative coupling of methane, methane oxidative conversion, basicity of oxide surface, lanthanide-alkaline-earth oxide catalysts

5. Camelia HULUBEI and Dumitru POPOVICI

Novel polyimides containing alicyclic units. Synthesis and characterization

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Key words: polyimides, alicyclic dianhydride thermostablility, solubility

6. Cristina ONIŞOR, Mihalj POŠA and Costel SÂRBU

Modeling of chromatographic lipophilicity indices of bile acids and their derivatives

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Key words: bile acids and their derivatives, HPLC, lipophilicity, QSPR, genetic algorithm

7. Mirela CĂLINESCU, Daniela MANEA and Gabriela PAVELESCU

Synthesys and spectroscopic properties of new complex compounds of europium(III) and terbium(III) with 2-hydroxy-1-naphthaldehyde acetylhydrazone and heterocyclic bases

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Key words: europium(III), terbium(III), lanthanides, luminescence, metal complexes

8. Marilena VASILESCU, Alina LATUS, Rodica D. BǍRǍŢOIU, Marioara BEM and Titus CONSTANTINESCU

Pluronic copolymer nanostructure for solubilization of hydrophobic benzofurazan derivatives in water. A spectrophotometric study

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Key words: micellar solubilization, 4-amino-7-nitrobenzoxadiazole derivatives, Pluronic L64, UV-Vis absorptrion, fluorescence

9. Alexandru Ioan CHIVULESCU, Mihaela BADEA DONI, Mihaela-Carmen CHEREGI, Andrei Florin DANET

Determination of amoxicillin, ampicillin and penicillin G using a flow injection analysis method with chemiluminescence detection

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Key words: flow injection analysis, chemiluminescence, β-lactam antibiotics analysis, luminol, UV irradiation

10. Dumitru OANCEA, Valentin MUNTEANU, Domnina RAZUS and Maria MITU

Temperature and pressure effect on the isothermal catalytic ignition of n-hexane/air mixtures on platinum

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Key words: atalytic ignition, induction period, platinum wire, n-hexane-air

11. Daniela IVANOV, Magda PETROVANU and Mircea CONSTANTINESCU

Transylidation of 3-methyl-phenacylpyridazinium ylides with phenylisocyanate. Influence of triethylamonium cation over prototropic rearrangement

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Key words: pyridazinium N-ylides, phenylisocyanate, triethylamonium cation, prototropic rearrangement


No 2 Fevrier 2011

Tome 56, No 2 Février 2011

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1. Daniela IVANOV, Dan MAFTEI and Mircea A. CONSTANTINESCU

Maleamic acids cyclodehydration with anhydrides. DFT study in the gas phase and solution

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Key words: cyclic transition state; DFT; maleimide; isomaleimide; cyclodehydration

2. Mihail CONTINEANU, Iulia CONTINEANU, Ana NEACŞU and Ştefan PERIŞANU

Kinetics and mechanism of the thermal decay of the radicals formed during the radiolysis of sodium selenate

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Key words: sodium selenate, ESR, radiolysis, thermal decay

3. Daniela BALA, Teodora STAICU and Constantin MIHAILCIUC

Onentropysourceandvarioustypes ofoverpotentialsencounteredatITIES in closed circuit conditions

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Key words: ITIES, closed circuit, entropy production, redox chemical reaction, polarization, overpotentials

4. Florina BRÂNZOI , Viorel BRÂNZOI and Iulia HĂRĂBOR

Adsorption and inhibitive corrosion properties of some new polymeric compounds on carbon steels in cooling water systems

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Key words: organic inhibitors, microwaves energy, cooling water systems, electrochemical polarization, spectroscopy FT-IR, electrochemical impedance spectroscopy and metallurgical microscopy techniques

5. Dorin ŞULEA, Marin MICUTZ, Mădălina Georgiana ALBU, Teodora STAICU and Minodora LECA

Collagen-thuja tincture biomaterials for wound treatment. 2. Hydrogels and porous matrices

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Key words: collagen hydrogels, collagen porous matrices, collagen-based biomaterials containing thuja tincture

6. Elena BACALUM, Medeea RADULESCU, Emilia-Elena IORGULESCU and Victor DAVID

Breakthrough parameters of SPE procedure on C18 cartridges for some polar compounds

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Key words: the breakthrough volume; hold-up volume; retention volume; C18 sorbent; atenolol; metoprolol; pentoxifylline

7. Greta PATRINOIU, Diana VISINESCU, Alina TIRSOAGA and Oana CARP

Green synthetic strategy for oxide materials: polysaccharides-assisted synthesis. Part III. Dextran-assisted synthesis of nanosized metal-oxides

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Key words: dextran, oxide nanopsrticles, coating, template

8. Mihaela FLOREA, Stephanie DELSARTE, Elisabeth van KEULEN and Paul GRANGE

1-butanol dehydration and dehydrogenation over vanadium aluminium oxynitride catalysts

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Key words: vanadium, oxynitrides catalysts, 1-butanol, dehydration, dehydrogenation

9. Irina PETROVICIU, Doina CREANGĂ, Ionela MELINTE, Ileana CREŢU, Andrei MEDVEDOVICI and Florin ALBU

The use of LC-MS in the identification of natural dyes in the epitaphios from Suceviţa Monastery (15th century)

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Key words: natural dyes, liquid chromatography, mass spectrometry (single stage and tandem), epitaphios, Suceviţa Monastery

10. Eugen SEGAL

The use of graphs in the kinetic analysis of multiroute reactions

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Key words: graphs, rate equation, multiroute reaction, cyclic characteristic, conjugation parameters


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