John Georg Seland

Stilling

Førsteamanuensis

Tilhørighet

Forskergrupper

Forskning

Min forskning er fokusert på karakterisering av molekylers dynamikk og organisering i ulike typer materialer ved bruk av Kjerne Magnetisk Resonans (NMR) spektroskopi og MR-avbildning. Teknikkene som benyttes er basert på hvordan dynamiske prosesser som relaksasjon og diffusjon påvirker signalet, og hva dette kan fortelle oss om vekselvirkninger mellom molekylene. Jeg jobber spesielt med karakterisering av væskefylte porøse systemer, ulike former for myke materialer, og anvendelser innen medisinsk avbildning. 

 

 

 

 

Undervisning

Jeg underviser kursene:

KJEM110 - Kjemi og energi

 

 

Publikasjoner
Konferanseforedrag
Konferanseabstrakt
Vitenskapelig artikkel
Annen presentasjon
Konferanseposter
Deltakelse i radio eller TV
Doktorgradsavhandling
Vitenskapelig litteraturgjennomgang
Forelesning
Masteroppgave

Se en fullstendig oversikt over publikasjoner i NVA.

  • Nanoparticles for Enhanced Oil Recovery: Phase Transition of Aluminum-Cross-Linked Partially Hydrolyzed Polyacrylamide under Low-Salinity Conditions by Rheology and Nuclear Magnetic Resonance" A. S. Kedir, J. G. Seland, A. Skauge, T. Skauge. Energy Fuels,  28 (5), 2948–2958 (2014).
  • "Nanoparticles for Enhanced Oil Recovery: Influence of pH on Aluminum-Cross-linked Partially Hydrolyzed Polyacrylamide-Investigation by Rheology and NMR" A. S. Kedir, J. G. Seland, A. Skauge, T. Skauge. Energy Fuels, 28 (4), 2343–2351, (2014),
  • "Investigating pore to pore exchange in systems saturated with water and oil", R. T. Lewis, S. Nåden, J. G. Seland. Diffusion Fundamentals, 18 1, (2013).
  • "Relaxometric properties of gadolinium-grafted mesoporous SBA-15 silica materials with varying pore size", H. Skår, Y. Liang, E. S. Erichsen, R. Anwander, J. G. Seland. Microporous and Mesoporous Materials, 175 125. (2013).

 

  • "Screening of the relaxivity of gadolinium-loaded periodic mesoporous silica functionalized by means of soft metalorganic silylamide grafting", H. Skår, J. G. Seland, Y. Liang, N. Å. Frøystein, K. W. Törnroos, R. Anwander. European Journal of Inorganic Chemistry, 35 5969. (2013).

 

  • "A comparison of retrospectively self-gated magnetic resonance imaging and high-frequency echocardiography for characterization of left ventricular function in mice" B. H. Amundsen, M. Ericsson, J. G. Seland, T. Pavlin, Ø. Ellingsen, C. Brekken, Lab Anim. 45, 31, (2011).

 

  • "Dynamic correlations between susceptibility gradients and T2-relaxation as a probe for wettability properties of liquid saturated rock cores", T. Pavlin and J. G. Seland, Diffusion Fundamentals, 14  8, (2010).

 

  • "High Frequency Modulated Gradient Spin Echo Diffusion Measurements with Chemical Shift Resolution" J. G. Seland, Diffusion Fundamentals, 14  7, (2010).

 

  • "Dynamic Water Changes in Excised Rat Myocardium assessed by Continuous Distribution of T1 and T2” M. Bruvold, J. G. Seland, H. Brurok, P. Jynge, Magn. Reson. Med. 58 (3), 442 (2007).

 

 

 

 

 

  • “Analyzing equilibrium water exchange between myocardial tissue compartments using dynamical two-dimensional correlation experiments combined with manganese-enhanced relaxography” J. G. Seland, M. Bruvold, H. W. Anthonsen, H. Brurok, J. Krane, and P. Jynge, Magn. Reson. Med, 58 (4), 674 (2007).
  • “NMR-propagator measurements in porous media in the presence of surface relaxation and internal fields” U.M. Scheven, J.G. Seland and D.G. Cory, Magn. Reson. Imag, 23, 363, (2005).
  • “Determination of water compartments in rat myocardium using combined D-T1 and T1-T2 experiments” J. G. Seland, M. Bruvold, H. W. Anthonsen, H. Brurok, W. Nordhøy, P. Jynge, and J. Krane, Magn. Reson. Imag, 23, 354, (2005).
  • “Correlations between diffusion, internal magnetic field gradients, and transverse relaxation in porous systems containing oil and water” J. G. Seland, K. E. Washburn, H. W. Anthonsen, and J. Krane, Phys. Rev. E. 70, 051305 (2004).
  • “Exploring the separate NMR responses from crude oil and water simultaneously present in a rock core” G. H. Sørland,  H. W. Anthonsen, J. G. Seland,  F. Antonsen, H. C. Widerøe , and J. Krane, Appl. Magn. Reson. 26, (2004).
  • “NMR propagator measurements on flow through a random pack of porous glass beads and how they are affected by dispersion, relaxation and internal field inhomogeneities” U. M. Scheven, J. G. Seland, and D. Cory, Phys. Rev. E, 69, 021201, (2004).
  • “Background gradient suppression in pulsed gradient stimulated echo diffusion measurements” P. Z. Sun, J. G. Seland, and D. Cory, J. Magn. Reson., 161, 168, (2003).
  • “Combining PFG and CPMG NMR measurements for separate characterization of oil and water simultaneously present in heterogeneous systems” J. G. Seland, G. H. Sørland, H. W. Anthonsen, and J. Krane, Appl. Magn. Reson. 24, 41 (2003).
  • “A PFG-NMR study of restricted diffusion in heterogeneous polymer particles” J. G. Seland, M. Ottaviani, and B. Hafskjold, J. Coll. Int. Sci. 239, 168 (2001).
  • “Diffusion measurements at long observation times in the presence of spatially variable internal magnetic field gradients” J. G. Seland, G. H. Sørland, K. Zick, and B. Hafskjold, J. Magn. Reson. 146, 14 (2000).
  • “Improved convection compensated pulsed field gradient spin-echo and stimulated-echo methods” G. H. Sørland, J. G. Seland, H. W. Anthonsen, and J. Krane, J. Magn. Reson. 142, 323 (2000).
  • “Measurement of diffusion in porous polythylene powder using PFGSTE NMR” J. G. Seland and B. Hafskjold, Magn. Reson. Imag. 16, 687 (1998).
  • “FTIR studies of the NO3 initiated degradation of but-2-yne: Mechanism and rate constant determination” J. G. Seland, I. M. W. Noremasaune, and C. J. Nielsen, J. Chem Soc. Far. Trans, 92, 3459 (1996).

 

Kompetanse
  • Kjernemagnetisk resonans (NMR/MRI)
  • Diffusjon
  • Porøse systemer

Vitenskaplig erfaring

Aug. 2008 - : Førsteamanuensis, Kjemisk institutt, Universitetet i Bergen, Bergen, Norge.

Nov. 2003-Aug. 2008: Forsker, Institutt for sirkulasjon og bildediagnostikk, Norges teknisk-naturvitenskaplige universitet, Trondheim, Norge 

April 2005-Jul. 2005: Forsker, Department of Biomedical Engineering, Worcester Polytechnic Institute, Worcester, USA

Jan. 2003-April. 2003: Forsker, Institutt for kjemi, Norges teknisk-naturvitenskaplige universitet, Trondheim, Norge

April 2003-Jul. 2003: Forsker, Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, USA

Jan. 2002-Des.2002: Forsker, Department of Nuclear Engineering, Massachusetts Institute of Technology, Cambridge, USA

Jan. 2001-Des. 2001: Post Doktor, Institutt for kjemi, Norges teknisk-naturvitenskaplige universitet, Trondheim, Norge

Utdannelse

Dr. Ing. i fysikalsk kjemi, Norges teknisk-naturvitenskaplige universitet, Trondheim, Norge, 2000

Hovedfag i fysikalsk kjemi, Universitet i Oslo, Oslo, Norge, 1994