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
Publikasjoner
Vitenskapelig foredrag
- Pavlovic, Zeljana; Waskaas, Madeleine; Grung, Bjørn et al. (2025). Samarbeidslæring i kjemilaboratorieundervisningen for økt læring. (ekstern lenke)
- Soule, Jonathan; Jordheim, Monica; Seland, John Georg et al. (2025). Facilitating student preparation and learning in chemistry courses with a virtual laboratory guide. (ekstern lenke)
- Sørgård, Henrik Nicolay; Seland, John Georg (2019). Investigating liquid displacement in porous media using spatially resolved NMR spectroscopy. (ekstern lenke)
- Sørgård, Henrik Nicolay; Totland, Christian; Nerdal, Willy et al. (2018). Investigating mobility of crude oil adsorbates on mineral surfaces by NMR. (ekstern lenke)
- Fredriksen, Sunniva; Alcorn, Zachary Paul; Frøland, Anders et al. (2018). Surfactant Pre-floods during CO2 Foam for Integrated Enhanced Oil Recovery in Fractured Oil-Wet Carbonates, SPE . (ekstern lenke)
- Seland, John Georg; Sørgård, Henrik Nicolay; Totland, Christian et al. (2017). An NMR-investigation of Crude Oil Adsorbates on Calcite and Quartz Surfaces. (ekstern lenke)
- Lewis, Rhiannon Tveiten; Seland, John Georg (2016). Multi-dimensional NMR experiments for characterization of pore structure heterogeneity and liquid saturations. (ekstern lenke)
- Seland, John Georg (2014). CORRELATIONS BETWEEN INHOMOGENEOUS MAGNETIC FIELDS, INTERNAL GRADIENTS, AND TRANSVERSE RELAXATION, AS A PROBE FOR PORE GEOMETRY AND HETEROGENEITY.. (ekstern lenke)
- Pavlin, Tina; Bruvold, Morten; Jynge, Per et al. (2008). Determining cellular microstructure of isolated rat hearts using correlated time-dependent diffusion and T2 relaxation measurements. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Skarra, Sissel et al. (2008). A relaxographic analysis of multi-compartmental water exchange in isolated perfused rat hearts. (ekstern lenke)
- Pavlin, Tina; Bruvold, Morten; Jynge, Per et al. (2008). Determining cellular microstructure of isolated rat hearts using correlated time dependent diffusion and T2 relaxation measurements. (ekstern lenke)
- Bruvold, Morten; Pavlin, Tina; Helluy, Xavier et al. (2007). In vivo MRI of Small Animals: T1-mapping of Rat Myocardium. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Brurok, Heidi et al. (2006). Studying water exchange in biological tissue using two dimensional relaxation and diffusion measurements. (ekstern lenke)
- Bruvold, Morten; Seland, John Georg; Skarra, Sissel et al. (2006). Changes in T1 and T2 Components in Global Ischemic Rat Heart Tissue. (ekstern lenke)
- Bruvold, Morten; Brurok, Heidi; Krane, Jostein et al. (2005). Differentiating between Intracellular and Extracellular Relaxivities in Rat Myocardium Using MEMRI. (ekstern lenke)
- Scheven, Ulrik; Seland, John Georg; Cory, David (2004). NMR-propagator measurements in porous media in the presence of surface relaxation and internal fields. (ekstern lenke)
- Seland, John Georg; Washburn, Kathryn; Anthonsen, Henrik et al. (2004). Correlations between internal gradients and transverse relaxation in porous systems containing oil and water. (ekstern lenke)
- Seland, John Georg; Washburn, Kathryn; Anthonsen, Henrik et al. (2004). Correlations Between Transverse Relaxation and Internal Gradients in Porous Systems Containing Oil and Water . (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Anthonsen, Henrik et al. (2004). Determination of water compartments in rat myocardium using combined D-T1 and T1-T2 experiments. (ekstern lenke)
- Seland, John Georg; Anthonsen, Henrik; Nordhøy, Wibeke et al. (2004). An Analysis of Water Compartments in Excised Rat Myocardium. (ekstern lenke)
- Anthonsen, Henrik; Sørland, Geir; Seland, John Georg et al. (2004). Characterization of Heterogeneous Systems Using Combinations of PFG and CPMG NMR Measurements. (ekstern lenke)
- Seland, John Georg; Washburn, Kate; Sørland, Geir H et al. (2003). Correlations Between Transverse Relaxation and Internal Gradients in Porous Systems Containing Oil and Water. (ekstern lenke)
- Anthonsen, Henrik; Sørland, Geir; Seland, John Georg et al. (2003). Diffusion and T2-Distributions of water simultaneously present in porous rock. (ekstern lenke)
- Seland, John Georg; Sørland, Geir H; Anthonsen, Henrik et al. (2003). Exploring the Separate NMR Responses from Crude Oil and Water Simultaneously Present in Rock Cores. (ekstern lenke)
- Seland, John Georg; Sørland, Geir; Anthonsen, Henrik et al. (2002). Kombinerte Diffusjon- og relaksasjonsmålinger for karakterisering av heterogene systemer. (ekstern lenke)
- Anthonsen, Henrik; Sørland, Geir; Seland, John Georg et al. (2002). Utplassering av en virtuell kjernemagnetisk resonans fasilitet, VNMRF. (ekstern lenke)
- Seland, John Georg (2000). Diffusjonsmålinger ved lange observasjonstider i systemer med interne gradienter. (ekstern lenke)
Faglig foredrag
Poster
- Maximov, Ivan; Seland, John Georg (2024). An anisotropic capillary based phantom for validation of diffusion-relaxation models. (ekstern lenke)
- Steinkopf, Signe Lilia; Totland, Christian; Seland, John Georg et al. (2016). Fatty acids in wild and farmed salmon by use of MRI and Solid-state NMR.. (ekstern lenke)
- Seland, John Georg (2014). Dynamic correlations between inhomogeneous magnetic fields, internal gradients, and transverse relaxation, as a probe for pore geometry and heterogeneity . (ekstern lenke)
- Pavlin, Tina; Seland, John Georg (2013). Investigating effects from restricted diffusion in multi-component diffusion data. (ekstern lenke)
- Pavlin, Tina; Seland, John Georg (2010). Dynamic correlations between susceptibility gradients and T2-relaxation as a probe for wettability properties of liquid saturated rock cores. (ekstern lenke)
- Pavlin, Tina; Seland, John Georg (2010). Dynamic correlations between susceptibility gradients and T2-relaxation as a probe for wettability properties of liquid saturated rock cores. (ekstern lenke)
- Skår, Hjørdis; Seland, John Georg; Ferrante, Gianni (2010). NMRD profiles of silica based contrast agents at high magnetic fields. (ekstern lenke)
- Seland, John Georg (2010). High Frequency Modulated Gradient Spin Echo Diffusion Measurements with Chemical Shift Resolution. (ekstern lenke)
- Seland, John Georg (2010). High Frequency Modulated Gradient Spin Echo Diffusion Measurements with Chemical Shift Resolution. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Pavlin, Tina et al. (2009). Field dependence of longitudinal relaxation contrast in cardiac manganese enhanced MRI. (ekstern lenke)
- Pavlin, Tina; Jynge, Per; Seland, John Georg (2007). Determination of time-dependent diffusion, T2 and water compartmentation in rat myocardium. (ekstern lenke)
- Seland, John Georg; Helmer, Karl; Bhagavatheeshwaran, Govind et al. (2006). Characterizing Intra- and Extracellular Spaces of Skeletal Muscle In Vivo using MEMRI. (ekstern lenke)
- Helmer, Karl; Seland, John Georg; Henninger, Niels et al. (2006). Separation of the Intra- and Extracellular Apparent Diffusion Coefficients (ADC) of Water in Rat Skeletal Muscle using Spectroscopic MEMRI. (ekstern lenke)
- Bruvold, Morten; Pavlin, Tina; Brurok, Heidi et al. (2006). Manganese-Enhanced Magnetic Resonance In Vivo Imaging of Rat Myocardium Using FLASH: Comparative Study of Contrast at 2.35T and 7T. (ekstern lenke)
- Bruvold, Morten; Seland, John Georg; Skarra, Sissel et al. (2006). A Time-Based Study of Changes in T1 and T2 Components in Excised Rat Myocardium. (ekstern lenke)
- Bruvold, Morten; Seland, John Georg; Skarra, Sissel et al. (2005). A Two-component Relaxographic Analysis of the Effects of Manganese Infusion and Stress in Rat Myocardium. (ekstern lenke)
- Bruvold, Morten; Brurok, Heidi; Krane, Jostein et al. (2005). Differentiating between Intracellular and Extracellular Relaxivities in Rat Myocardium Using MEMRI. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Skarra, Sissel et al. (2005). An Analysis of Water Compartments in Excised and Perfused Rat Myocardium. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Krane, Jostein et al. (2005). Myocardial T1 can differentiate between intracellular (ic)and extracellular (ec) water in perfused rat myocardium. (ekstern lenke)
- Seland, John Georg; Anthonsen, Henrik; Washburn, Kathryn et al. (2004). Correlations between transverse relaxation and internal gradients in porous systems containing oil and water. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Anthonsen, Henrik et al. (2004). Diffusion and Relaxation in Excised Rat Myocardium Containing an Extracellular Contrast Agent. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Brurok, Heidi et al. (2004). Correlations between Longitudinal Relaxation and Diffusion in Excised Rat Myocardium. (ekstern lenke)
- Anthonsen, Henrik; Seland, John Georg; Nordhøy, Wibeke et al. (2004). Detrmination of manganese T1 relaxation in rat myocardium. (ekstern lenke)
- Anthonsen, Henrik; Krane, Jostein; Seland, John Georg et al. (2002). Development of a virtual NMR facility. (ekstern lenke)
- Risa, Øystein; Anthonsen, Henrik; Seland, John Georg et al. (2002). UVB radiation effects on the metabolites, diffusion of water and the T1 and T2 relaxation times in rat lens. (ekstern lenke)
- Seland, John Georg; Hafskjold, Bjørn (2000). Diffusion measurements in porous polymer particles. (ekstern lenke)
- Seland, John Georg; Sørland, Geir (2000). The effect of internal magnetic field gradients on diffusion measurements in heterogeneous systems. (ekstern lenke)
Vitenskapelig artikkel
- Totland, Christian; Steinkopf, Signe Lilia; Storhaug, Lisa Tu et al. (2022). 31P solid-state NMR on skeletal muscle of wild and farmed Atlantic salmon. (ekstern lenke)
- Bratland, Aina Marie Løkkevik; Seland, John Georg (2021). Multidimensional dynamic NMR correlations in sedimentary rock cores at different liquid saturations. (ekstern lenke)
- Almenningen, Stian; Srikumar, Roy; Hussain, Arif et al. (2020). Effect of Mineral Composition on Transverse Relaxation Time Distributions and MR Imaging of Tight Rocks from Offshore Ireland.. (ekstern lenke)
- Fredriksen, Sunniva; Alcorn, Zachary Paul; Frøland, Anders et al. (2019). Surfactant Prefloods During Carbon Dioxide Foam Injection for Integrated Enhanced Oil Recovery in Fractured Oil-Wet Carbonates. (ekstern lenke)
- Sørgård, Henrik Nicolay; Seland, John Georg (2019). Investigating pore geometry in heterogeneous porous samples using spatially resolved G0-Xapp and G0-v correlations. (ekstern lenke)
- Sørgård, Henrik Nicolay; Totland, Christian; Nerdal, Willy et al. (2019). Investigating mobility of crude oil adsorbates on mineral surfaces by NMR. (ekstern lenke)
- Sørgård, Henrik Nicolay; Seland, John Georg (2019). A fluid specific dimension of confinement as a measure of wettability in porous media. (ekstern lenke)
- Bratland, Aina Marie Løkkevik; Pavlin, Tina; Djurhuus, Ketil et al. (2019). Characterising oil and water in porous media using correlations between internal magnetic gradient and transverse relaxation time. (ekstern lenke)
- Lewis, Rhiannon Tveiten; Seland, John Georg (2018). Characterization of pore geometry using correlations between magnetic field and internal gradient. (ekstern lenke)
- Wisniewska, Malgorzata; Seland, John Georg (2018). Investigating structure-dependent diffusion in hydrogels using spatially resolved NMR spectroscopy. (ekstern lenke)
- Wisniewska, Malgorzata; Seland, John Georg; Wang, Wei (2018). Determining the scaling of gel mesh size with changing crosslinker concentration using dynamic swelling, rheometry, and PGSE NMR spectroscopy. (ekstern lenke)
- Sørgård, Henrik Nicolay; Totland, Christian; Nerdal, Willy et al. (2018). Investigating mobility of crude oil adsorbates on mineral surfaces by NMR. (ekstern lenke)
- Totland, Christian; Seland, John Georg; Steinkopf, Signe Lilia et al. (2017). Analysis of wild and farmed salmon using 13C solid-state NMR and MRI directly on fillet tissue. (ekstern lenke)
- Sørgård, Henrik Nicolay; Totland, Christian; Nerdal, Willy et al. (2017). Crude Oil Adsorbates on Calcite and Quartz Surfaces Investigated by NMR Spectroscopy. (ekstern lenke)
- Lewis, Rhiannon Tveiten; Seland, John Georg (2016). A multi-dimensional experiment for characterization of pore structure heterogeneity using NMR. (ekstern lenke)
- Kedir, Abduljelil; Seland, John Georg; Skauge, Arne et al. (2016). Re-entrant transition of aluminum-crosslinked partially hydrolyzed polyacrylamide in a high salinity solvent by rheology and NMR. (ekstern lenke)
- Lewis, Rhiannon Tveiten; Djurhuus, Ketil; Seland, John Georg (2015). Characterising oil and water in porous media using decay due to diffusion in the internal field. (ekstern lenke)
- Kedir, Abduljelil; Seland, John Georg; Skauge, Arne et al. (2014). Nanoparticles for enhanced oil recovery: influence of pH on aluminum-cross-linked partially hydrolyzed polyacrylamide-investigation by rheology and NMR. (ekstern lenke)
- Kedir, Abduljelil; Seland, John Georg; Skauge, Arne et al. (2014). Nanoparticles for enhanced oil recovery: Phase transition of aluminum-cross-linked partially hydrolyzed polyacrylamide under low-salinity conditions by rheology and nuclear magnetic resonance. (ekstern lenke)
- Lewis, Rhiannon Tveiten; Nåden, Susanne; Seland, John Georg (2013). Investigating pore to pore exchange in systems saturated with water and oil. (ekstern lenke)
- Skår, Hjørdis; Liang, Yucang; Erichsen, Egil Severin et al. (2013). Relaxometric properties of gadolinium-grafted mesoporous SBA-15 silica materials with varying pore size. (ekstern lenke)
- Skår, Hjørdis; Seland, John Georg; Liang, Yucang et al. (2013). Screening of the relaxivity of gadolinium-loaded periodic mesoporous silica functionalized by means of soft metalorganic silylamide grafting. (ekstern lenke)
- Amundsen, Brage H.; Ericsson, Madelene; Seland, John Georg et al. (2011). A comparison of retrospectively self-gated magnetic resonance imaging and high-frequency echocardiography for characterization of left ventricular function in mice. (ekstern lenke)
- Bruvold, Morten; Seland, John Georg; Brurok, Heidi et al. (2007). Dynamic water changes in excised rat myocardium assessed by continuous distribution of T-1 and T-2. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Brurok, Heidi et al. (2007). Analyzing equilibrium water exchange between myocardial tissue compartments using dynamical two-dimensional correlation experiments combined with manganese-enhanced relaxography. (ekstern lenke)
- Seland, John Georg; Bruvold, Morten; Anthonsen, Henrik et al. (2005). Determination of water compartments in rat myocardium using combined D-T-1 and T-1-T-2 experiments. (ekstern lenke)
- Seland, John Georg; Washburn, Kathryn; Anthonsen, Henrik et al. (2004). Correlations between diffusion, internal magnetic field gradients and transverse relaxation in porous systems containing oil and water. (ekstern lenke)
- Scheven, Ulrik; Seland, John Georg; Cory, David (2004). NMR propagator measurements on flow through a random pack of porous glass beads and how they are effected by dispersion, relaxation and internal field inhomogeneities. (ekstern lenke)
- Sorland, GH; Anthonsen, HW; Seland, John Georg et al. (2004). Exploring the separate NMR responses from crude oil and water in rock cores. (ekstern lenke)
- Seland, John Georg; Sørland, Geir H; Anthonsen, Henrik et al. (2003). Characterization of Heterogeneous Systems Using Combinations of PFG and CPMG NMR Measurements. (ekstern lenke)
- Sørland, G.H.; Seland, John Georg; Krane, Jostein et al. (2000). Improved Convection Compensating Pulsed Field Gradient Spin-Echo and Stimulated-Echo Methods. (ekstern lenke)
- Seland, John Georg; Sørland, Geir; Zick, Klaus et al. (2000). Diffusion measurements at long observation times in the presence of spatially variable internal magnetic field gradients. (ekstern lenke)
Mastergradsoppgave
Vitenskapelig oversiktsartikkel/review
Doktorgradsavhandling
- Wisniewska-Dale, Malgorzata Anna; Seland, John Georg (2019). Characterizing mass transport in hydrogels using Nuclear Magnetic Resonance. (ekstern lenke)
- Lewis, Rhiannon Tveiten; Seland, John Georg (2015). Characterizing liquid dynamics and surface interactions in porous materials using Nuclear Magnetic Resonance. (ekstern lenke)
- Bruvold, Morten; Jynge, Per; Brurok, Heidi et al. (2008). Manganese and Water in Cardiac Magnetic Resonance Imaging. (ekstern lenke)
Programdeltagelse
Se en full oversikt over publikasjoner i Cristin
- 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).