Nume: TURCU Romulus Valeriu

Tema: Tema de cercetare domeniul bio-nano-ştiinţe - Aria tematică: INTERDISCIPLINARĂ

Partener: Universitatea Babeş-Bolyai, Cluj Napoca

Proiect: : Utilizarea spectroscopiei de rezonanta magnetica nucleara in studiul si conservarea patrimoniului cultural

Date de contact:
fturcu@phys.ubbcluj.ro

Descriere proiect:

Spectroscopia RMN pentru starea solida este o metoda extrem de utila pentru studiul structurii locale si a dinamicii constituientilor compusilor. O particularitate asociata cu tehnica RMN este sensibilitatea sa la mediul chimic, astfel incat rezultatele analizelor RMN conduc spre concluzii importante privind structura materiei sau modificarile structurale care au loc.

Concret, in prezentul proiect de cercetare sunt analizate mostre osoase de origine umana care au fost fie incinerate fie ingropate ca parte a proceselor funerare. Mostrele acopera o perioada de peste doua milenii incepand din secolul V B.C.

Arie de interes:

Experienta de peste 10 ani in Rezonanta Magnetica (RM) in general si cu precadere in Rezonanta Magnetica Nucleara (RMN) si Microscopia Fortei Rezonantei Magnetice (MFRM). Domeniile actuale de interes cuprind: (i) dezvoltarea tehnilogiei RMN prin rotire la unghiul magic sub presiune, (ii) caracterizarea amestecurilor omogene si/sau neomogen aflate in stare solida/lichida si/sau gazoasa, (iii) corelatii RMN homo- si hetero-nucleare la campuri inalte, (iv) nuclee cuadrupolare, (v) simularea linnilor RMN (SIMPSON, GAMMA), (vi) procese geochimice associate cu sechestrarea geologica a dixidului de carbon, mecanismul reactiei solid-scCO2-H2O, (vii) imagistica RMN, (viii) caracterizarea bio-materialelor prin RPE/RMN/I-RMN.

Publications:

  • S. Simon, R.V.F. Turcu, M. Pop and G. Borodi; “Bismuth Partial Substitution Effect Properties of Bi2Sr2Ca2Cu3O7 System” , Modern Physics Letters B 16, 769 (2002).
  • R.V.F. Turcu, P.Knijn, G.E. Janssen, J. van Bentum, E.R.H. van Eck A.P.M. Kentgens; “Probing into the local structure of GaAs / AlGaAs with nutation NMR / Magnetic Resonance Force Microscopy (MRFM)” , Studia Physica 3, 175 (2004).
  • V. Simon, R.V.F. Turcu, D. Eniu, S. Simon; “Short range order changes induced by heat treatment in yttrium aluminosilicate glasses” , Physica B. 403, 139-144 (2008).
  • V. Simon, D. Laz.r, R.V.F. Turcu, H. Mocuta, K. Magyari, M. Prinz, M. Neumann, S. Simon; “Atomic environment in sol-gel derived nanocrystalline hydroxyapatite” , Materials Science and Engineering B 165 (3), 247 – 251 (2009).
  • .V.F. Turcu, Simion Simon, Serban Constantinescu, Nicoleta Grecu, Dinu Iuga; “Structural changes of piezoelectric La3Ga5SiO14 induced by paramagnetic ions revealed by 71Ga Multiple Quantum Magic Angle Spinning” , Solid State Nucl. Magn. Reson. 36 (2), 92-95 (2009).
  • D.L. Trandafir, R.V.F. Turcu, H. Mocuta, S. Simon; “Structural study of spray dried silica-germanate nanoparticles” , Materials Science and Engineering B 172 (1), 68-71 (2010).
  • M. Todea, B. Frentiu R.V.F. Turcu, S. Simon; “Structural properties of yttrium aluminosilicates microsphere” , J. Phys. Chem. Solids 72, 164 – 168, (2011).
  • J.H. Kwak, J.Z. Hu, R.V.F. Turcu, K.M. Rosso, E.S. Ilton, C. Wang, J.A. Sears, M.H. Engelhard, A.R. Felmy, D.W. Hoyt; “The Role of H2O in the Carbonation of Forsterite in Supercritical CO2” , Int. J. Greenh Gas Con. 5 (4), 1081-1092 (2011).
  • M. Todea, R.V.F. Turcu, B. Frentiu, M. Tamasan, H. Mocuta, O. Ponta, S. Simon; “Amorphous and nanostructured silica and aluminosilicate spray-dried microspheres” , J Mol. Struct. 1000 (1-3), 62-68 (2011).
  • D.W. Hoyt, R.V.F. Turcu, J.A. Sears, K.M. Rosso, S.D. Burton, A.R. Felmy, J.Z. Hu; “High-Pressure Magic Angle Spinning Nuclear Magnetic Resonance” , J. Magn. Reson. 212, 378-385, (2011).
  • J.Z. Hu, J.H. Kwak, Y. Wang, M. Hu, R.V.F. Turcu, C.H.F. Peden; “Characterizing Surface Acidic Sites in Mesoporous Silica Supported Tungsten Oxide Using Solid State NMR and Quantum Chemistry Calculations” , J. Phys. Chem. C 115, 23354-23362, (2011).
  • M. Todea, B. Frentiu, R.V.F Turcu, S. Simon; “Surface structure changes on aluminosilicate microspheres at the interface with simulated body fluid” , Corrosion Sci. 54, 299 – 306, (2012)
  • J.S. Loring, H.T. Schaef, R.V.F. Turcu, C.J. Thompson, Q.R. Miller, P.F. Martin, J.Z. Hu, D.W. Hoyt, O. Qafoku, E.S. Ilton, A.R. Felmy, K.M. Rosso; “In Situ Molecular Spectroscopic Evidence for CO¬2¬ Intercalation into Montmorillonite in Supercritical Carbon Dioxide” , Langmuir 28 (18), 7125 – 7128, (2012)