MEMBRIAlexandru T. BALABANTexas A&M University at Galveston, SUAIon BOLOCANUniversitatea Petrol Gaze PloieºtiMiron Teodor CÃPROIUInstitutul de Chimie Organicã “C.D. Neniþescu” BucureºtiAndrei F. DÃNEÞUniversitatea BucureºtiCorneliu Mircea DAVIDESCUUniversitatea Politehnica TimiºoaraLaurenþiu FILIPESCUUniversitatea Politehnica BucureºtiIonel HAIDUCAcademia RomânãValeriu V. JINESCUUniversitatea Politehnica BucureºtiJiri Jaromir KLEMESUniversity of Pannonia Veszprém UngariaJean-Marie LEHNUniversité Louis Pasteur, Strasbourg, FranþaAngela LUPUUniversitatea Politehnica BucureºtiIonel MANGALAGIUUniversitatea Alexandru Ioan Cuza IasiGheorghe MARIAUniversitatea Politehnica BucureºtiGheorghe D. MATEESCUCase Western Reserve University, Cleveland SUALucian MOÞIUAGER Consulting SRL

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Societatea de Chimie din România SYSCOM 18 Bucureºti SC Biblioteca Chimiei SA

5REVISTA DE CHIMIE

Bucharest - RomaniaChem. Abs.: RCBUAU 66 (5) (597-758)

ISSN 0034-7752Vol. 66, no. 5, May, 2015

CONTENTS

L.Constantin, Ines Nitoi, I.Cristea, Petruta Oancea, Cristina Orbeci, Aurelia Cristina NechiforDegradation Triclosan by TiO2-UV Irradiation in Aqueous Solutions............................................................................................597Violeta-Monica Radu, Elena Diacu, Petra Ionescu, D.GyorgySpatio-Temporal Characterization of Nutrient Pollution in Lower Danube Area.......................................................................601Carolina Negrei, C.Caruntu, O.Ginghina, G.T.A.Burcea Dragomiroiu,Corina Dalia Toderescu, D.BodaQualitative, and Quantitative Determination of Methotrexate Polyglutamates in Erythrocytes By HighPerformance Liquid Chromatography................................................................................................................................................607Mihaela Monica Stanciu-Burileanu, Venera Mihaela Stroe, M.Musat, C.Luca, R. LacatusuQuantification of Selenium Compounds from Soil Samples by HPLC-ICP-MS.........................................................................611F.H.Kamar, Aurelia Cristina Nechifor, A.A.Mohammed, P.C.Albu, Mihaela Emanuela CraciunRemoval of Lead and Cadmium Ions from Aqueous Solution using Walnut Shellsas Low-Cost Adsorbent Materials.......................................................................................................................................................615Mariana Carmen Burtea, I.G.Sandu, Gabriela Alina Cioromele, M.Bordei, A.Ciurea,Gh.RomanescuSustainable Exploitation of Ecosystems on the Big Island of Braila...........................................................................................621Corina Daniela Ene (Nicolae), Ilinca Nicolae, C.Ene, M.Tampa, Clara Matei,Simona Roxana GeorgescuEffect of Tobacco Alkaloids on the Endocrine System...................................................................................................................628Ioana Popa Iordanescu, O.Popa, Narcisa Babeanu, Sultana Nita, Ileana Paraschiv,Nicoleta Dobre, Ileana IonicaPhysico-Chemical Characterization of Amaranth Extracts from Romanian Vegetal Sources withAntioxidant and Antiinflammatory Activities....................................................................................................................................634Mihaiela Andoni, Raluca Pop, Codruta Soica, Georgeta Maria Simu, Maria Ilici,Simona Ardelean, Doina Onisei, Cristina Adriana DeheleanTheoretical Study Regarding the Reactivity of 5-nitrofuran-2-carboxaldehyde thiosemicarbazone....................................637Liliana Rozemarie Manea, Roxana Scarlet, Ana Lacramioara Leon, I.SanduControl of Nanofibers Production Process Through Electrospinning...........................................................................................640Mihaela Ciopec, Adina Negrea, M.Pentea, I.Samfira, Marilena Motoc, Monica ButnariuStudies Concerning the Immobilisation and Stabilization of the Mining Landfills....................................................................645B.Z.TeodorovicGeochemistry of Ni, Co, and Zn in the Calcite Fraction of Organic Rich Layer at Cretacious- paleogeneBoundary from Caravaca (Spain)........................................................................................................................................................654M.Apostu, Nela Bibire, Gladiola Tantaru, Madalina Vieriu, Alina Diana Panainte,Luminita AgoroaeiIon-selective Membrane Electrodes for the Determination of Heavy Metals. Construction,characterization and applications.......................................................................................................................................................657Florentina Golgovici, Mariana Prodana, Anca PopescuEffect of Reprocessing Treatment on the Corrosion of Co-Cr Alloy in Acid Media....................................................................660Marcela Popa, I.Mamaliga, S.Petrescu, Eugenia Teodora, I.TudoseAxial Dispersion Study in Fixed Bed Columns..................................................................................................................................668D. Maftei, I.V.Asaftei, I.Sandu, Liliana Rozemarie Manea, L.M.Birsa, K.EararConversion of Industrial Feedstock, mainly with Butanes and Butenes over HZSM-5 andZn/HZSM-5 (nitrate) catalysts..............................................................................................................................................................673Mirela Nicolov, Z.Szabadai, Cristina Trandafirescu, D.DragosUrea Simulation as a Biofunctional Material.....................................................................................................................................681Elena Grigore, O.Pantea, D.Bombos, Catalina Calin, Andreea Bondarev, Catalina GheorgheEffect of Inhibitors based Amine Derivates on Some Carbon Steel Corrosion..........................................................................685

Ioana Stoica, I.Banu, Gr.BozgaModelling and Simulation of a Catalytic Fixed Beds Network Operated in ForcedUnsteady State Conditions....................................................................................................................................................................691V.V.Jinescu, Vali-Ifigenia Nicolof, C.Jinescu, Angela CheluSuperposition of Effects in Calculating the Deterioration of Tubular Structures and inNon-newtonian Fluid Flow....................................................................................................................................................................698Violeta Alexandra Ion, Oana Cristina Pirvulescu, T.Dobre, N.Duteanu, Sabina Georgiana NituModelling of Thermal Desorption of Volatile Organic Compounds from Activated Carbon...................................................703T.Petreus, Ana Maria Holicov, Gh.Gh.Balan, Dana Elena MitricaComparative Evaluation of Biocompatibility Assays used in Polymer Biomaterials Assessment........................................707Gh.Zecheru, P.Yuchymets, Gh.Draghici. A.DumitrescuMethods for Determining the Remaining Strength Factor of Pipelines with Volumetric Surface Defects..........................710Lenuta-Maria Suta, I.Ledeti, Liana Suciu, D.Hadaruga, Adriana Fulias, Ionela BeluStudy Regarding the Behaviour of Encapsulated Piroxicam in Liquid Media............................................................................718Liana Bogatu, Raluca DragomirSuitable Compositions for Efficient Deep Stamping Lubricants...................................................................................................722Casen Panaitescu, Monica Emanuela StoicaEnhancing of COD Treatment in the Physico-chemical Stage of Refinery Wastewater Treatment Plants........................728Claudia Maria Simonescu, Alina Tatarus, C.Tardei, Delia Patroi, Mioara Dragne,Daniela C.Culita, Rodica-Elena Patescu, L.T.Busuioc, Ioana MelinteNano and Micro-hydroxyapatite Particles for Lead Removal from Wastewater.......................................................................732Carmen Luiza Costuleanu, C.R.Vintu, D.A.Robu, Gabriela Ignat, S.BrezuleanuFood Waste Processing Relationships with Environment Protection..........................................................................................743Cristina Roxana Popa, N.ParaschivRobustness Improvement in Operating the Reactor-Regenerator Group for theCatalytic Cracking Unit Using Advanced Automation....................................................................................................................746G.I.Marton, Petrica Iancu, V.Plesu, Anca Marton, S.G.SorigaSolketal-a Quantum Mecanics Study of the Reaction Mechanism of Ketalization.................................................................750Carmen Otilia Rusanescu, C.Jinescu, G.Paraschiv, S.S.Biris, M.Rusanescu, Olimpia GhermecInfluence of the Nb,V and Mo Elements on the Ecological Micro-alloyed Steel Properties...................................................754

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CUPRINS

Societatea de Chimie din România SYSCOM 18 Bucureºti SC Biblioteca Chimiei SA

5REVISTA DE CHIMIE

Bucuresti - RomâniaChem. Abs.: RCBUAU 66 (4) (597-758)

ISSN 0034-7752Vol. 66, nr. 5, mai, 2015

L.Constantin, Ines Nitoi, I.Cristea, Petruta Oancea, Cristina Orbeci, Aurelia Cristina NechiforDegradarea triclosanului din solutii apoase prin iradiere UV si TiO2...........................................................................................597Violeta-Monica Radu, Elena Diacu, Petra Ionescu, D.GyorgyCaracterizarea spatio-temporala a poluarii cu nutrienti in zona Dunarii de Jos........................................................................601Carolina Negrei, C.Caruntu, O.Ginghina, G.T.A.Burcea Dragomiroiu,Corina Dalia Toderescu, D.BodaDeterminarea calitativa si cantitativa a formelor poliglutamate ale metotrexatului din eritrociteprin cromatografie lichida de inalta performanta............................................................................................................................607Mihaela Monica Stanciu-Burileanu, Venera Mihaela Stroe, M.Musat, C.Luca, R. LacatusuIdentificarea compusilor de seleniu din probe de sol prin HPLC-ICP-MS...................................................................................611F.H.Kamar, Aurelia Cristina Nechifor, A.A.Mohammed, P.C.Albu, Mihaela Emanuela CraciunIndepartarea ionilor de plumb si cadmiu din solutii apoase utilizand coji de nuci ca materialadsorbant accesibil................................................................................................................................................................................615Mariana Carmen Burtea, I.G.Sandu, Gabriela Alina Cioromele, M.Bordei, A.Ciurea,Gh.RomanescuExploatarea durabila a ecosistemelor din Insula Mare a Brailei...................................................................................................621Corina Daniela Ene (Nicolae), Ilinca Nicolae, C.Ene, M.Tampa, Clara Matei,Simona Roxana GeorgescuEfectul alcaloizilor de tutun asupra sistemului endocrin...............................................................................................................628Ioana Popa Iordanescu, O.Popa, Narcisa Babeanu, Sultana Nita, Ileana Paraschiv,Nicoleta Dobre, Ileana IonicaCaracterizarea fizico-chimica a extractului de amarant din surse vegetale din Romania, cuactivitate antioxidanta si antiinflamatoare ......................................................................................................................................634Mihaiela Andoni, Raluca Pop, Codruta Soica, Georgeta Maria Simu, Maria Ilici,Simona Ardelean, Doina Onisei, Cristina Adriana DeheleanStudiu teoretic privind reactivitatea 5-nitrofuran-2- carboxaldehida tiosemicarbazona.........................................................637Liliana Rozemarie Manea, Roxana Scarlet, Ana Lacramioara Leon, I.SanduControlul procesului de obtinere a nanofibrelor prin electrofilare................................................................................................640Mihaela Ciopec, Adina Negrea, M.Pentea, I.Samfira, Marilena Motoc, Monica ButnariuStudii privind imobilizarea si stabilizarea haldelor de steril...........................................................................................................645B.Z.TeodorovicGeochimia Ni, Co, si Zn din fractia calcitica a stratului organic depus in Cretacicul- paleogenin regiunea Caravaca (Spania).............................................................................................................................................................654M.Apostu, Nela Bibire, Gladiola Tantaru, Madalina Vieriu, Alina Diana Panainte,Luminita AgoroaeiElectrozi cu membrana ion-selectiva pentru determinarea unor metale grele. Constructie,caracterizare si aplicatii........................................................................................................................................................................657Florentina Golgovici, Mariana Prodana, Anca PopescuEfectele tratamentului de reprocesare asupra coroziunii aliajului Co/Cr in medii acide........................................................660Marcela Popa, I.Mamaliga, S.Petrescu, Eugenia Teodora, I.TudoseStudiul dispersiei axiale in coloanele cu strat fix.............................................................................................................................668D. Maftei, I.V.Asaftei, I.Sandu, Liliana Rozemarie Manea, L.M.Birsa, K.EararConversia materiilor prime industriale, in special cu butani si butene pe catalizatori HZSM-5 siZn/HZSM-5 (azotat)................................................................................................................................................................................673Mirela Nicolov, Z.Szabadai, Cristina Trandafirescu, D.DragosUreea utilizata in simulari de materialelor biofunctionale.............................................................................................................681Elena Grigore, O.Pantea, D.Bombos, Catalina Calin, Andreea Bondarev, Catalina GheorgheInfluenta inhibitorilor de tip aminic asupra coroziunii unor oteluri...............................................................................................685Ioana Stoica, I.Banu, Gr.BozgaModelarea si simularea reactoarelor catalitice in strat fix actionate in regim nestationar fortat.........................................691

7

V.V.Jinescu, Vali-Ifigenia Nicolof, C.Jinescu, Angela CheluSuprapunerea efectelor la calculul deteriorarii structurilor tubularesi la curgerea fluidelor nenewtoniane................................................................................................................................................698Violeta Alexandra Ion, Oana Cristina Pirvulescu, T.Dobre, N.Duteanu, Sabina Georgiana NituModelarea procesului de regenerare a carbunelui activ prin desorptia termica a compusilor volatili ...............................703T.Petreus, Ana Maria Holicov, Gh.Gh.Balan, Dana Elena MitricaEvaluarea comparativa a unor teste de biocompatibilitate pentru biomaterialele polimerice.............................................707Gh.Zecheru, P.Yuchymets, Gh.Draghici. A.DumitrescuMetode de stabilire a factorului rezistentei mecanice reziduale pentru conductele cu defectesuperficiale de tip lipsa de material....................................................................................................................................................710Lenuta-Maria Suta, I.Ledeti, Liana Suciu, D.Hadaruga, Adriana Fulias, Ionela BeluStudiul comportarii in mediu lichid a piroxicamului incapsulat ..................................................................................................718Liana Bogatu, Raluca DragomirCompozitii adecvate pentru lubrifiantii utilizati la ambutisarea tablelor din industria auto...................................................722Casen Panaitescu, Monica Emanuela StoicaEficientizarea tratamentului COD in faza fizico-chimica in statiile de epurare din rafinarii..................................................728Claudia Maria Simonescu, Alina Tatarus, C.Tardei, Delia Patroi, Mioara Dragne,Daniela C.Culita, Rodica-Elena Patescu, L.T.Busuioc, Ioana MelinteParticule de nanao si micro-hidroxiapatita pentru indepartarea plumbului din apele reziduale...........................................732Carmen Luiza Costuleanu, C.R.Vintu, D.A.Robu, Gabriela Ignat, S.BrezuleanuPrelucrarea deseurilor alimentare pentru asigurarea protectiei mediului .................................................................................743Cristina Roxana Popa, N.ParaschivCresterea robustetii in operarea grupului de reactie dintr-o instalatie de cracare cataliticaprin automatizare avansata..................................................................................................................................................................746G.I.Marton, Petrica Iancu, V.Plesu, Anca Marton, S.G.SorigaSolketal-un studiu al mecanismului reactiei de ketalizare...........................................................................................................750Carmen Otilia Rusanescu, C.Jinescu, G.Paraschiv, S.S.Biris, M.Rusanescu, Olimpia GhermecInfluenta elementelor Nb, V si Mo asupra proprietatilor ecologice ale otelului micro-aliat...................................................754

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