References
- Berger, M.J., Hubbell, J.H., Seltzer, S.M., Chang, J., Coursey, J.S., Sukumar, R., Zucker, D.S., Olsen, K., 1998. XCOM: Photon Cross Sections Database. National Institute of Standards and Technology. http://www.nist.gov/pml/data/xcom/index.cfm/
- Cardinal, H.N., Holdsworth, D.W., Drangova, M., Hobbs, B.B., Fenster, A., 1993. Experimental and theoretical x-ray imaging performance comparison of iodine and lanthanide contrast agents. Med. Phys., 20, 15-31.
- Clausnitzer, V. Hopmans, J.W., 1999. Determination of phasevolume fractions from tomographic measurements in twophase systems. Adv. Water Resour., 22, 577-584.
- Heijs, A.W., De Lange, J., Schoute, J.F.Th., Bouma, J., 1995. Computed tomography as a tool for non-destructive analysis of flow patterns in macroporous clay soils. Geoderma, 64, 183-196.
- Heindel, T.J., 2011. A review of X-ray flow visualization with applications to multiphase flows. J. Fluids Eng., 133, article number 074001.
- Hirono, T., Takahashi, M., Nakashima, S., 2003. In situ visualization of fluid flow image within deformed rock by X-ray CT. Eng. Geol., 70, 37-46.
- Iglauer, S., Paluszny, A., Pentland, C.H., Blunt, M.J., 2011. Residual CO2 imaged with X-ray micro-tomography. Geophys. Res. Lett., 38, L21403.
- Jinguuji, M., Toprak, S., Kunimatsu, S., 2007. Visualization technique for liquefaction process in chamber experiments by using electrical resistivity monitoring. Soil Dyn. Earthq. Eng., 27, 191-199.
- Ketcham, R.A., Carlson, W.D., 2001. Acquisition, optimization and interpretation of X-ray computed tomographic imagery: applications to the geosciences. Comp. Geosci., 27, 381-400.
- Minagawa, H., Nishikawa, Y., Ikeda, I., Miyazaki, K., Takahara, N., Sakamoto, Y., Komai, T., Narita, H., 2008. Characterization of sand sediment by pore size distribution and permeability using proton nuclear magnetic resonance measurement. J. Geophys. Res., 113, article number B07210.
- Nakano, T., Nakashima, Y., Nakamura, K., Ikeda, S., 2000. Observation and analysis of internal structure of rock using X-ray CT. J. Geol. Soc. Jpn., 106, 363-378.
- Nakashima, Y., 2000. The use of X-ray CT to measure diffusion coefficients of heavy ions in water-saturated porous media. Eng. Geol., 56, 11-17.
- Nakashima, Y., 2003. Diffusivity measurement of heavy ions in Wyoming montmorillonite gels by X-ray computed tomography. J. Contam. Hydrol., 61, 147-156.
- Nakashima, Y., Kamiya, S., 2007. Mathematica programs for the analysis of three-dimensional pore connectivity and anisotropic tortuosity of porous rocks using X-ray computed tomography image data. J. Nucl. Sci. Technol., 44, 1233-1247.
- Nakashima, Y., Nakano. T., 2012. Nondestructive quantitative analysis of a heavy element in solution or suspension by single- shot computed tomography with a polychromatic X-ray source. Anal. Sci., 28, 1133-1138.
- Nakashima Y., Watanabe, Y., 2002. Estimate of transport properties of porous media by micro-focus x-ray computed tomography and random walk simulation. Water Resour. Res., 38, article number 1272.
- Nakashima, Y., Mitsuhata, Y., Nishiwaki, J., Kawabe, Y., Utsuzawa, S., Jinguuji, M., 2011. Non-destructive analysis of oil-contaminated soil core samples by X-ray computed tomography and low-field nuclear magnetic resonance relaxometry: a case study. Water Air Soil Pollut., 214, 681-698.
- Oh, J., Kim, K.Y., Han, W.S., Kim, T., Kim, J.C., Park, E., 2013. Experimental and numerical study on supercritical CO2/brine transport in a fractured rock: Implications of mass transfer, capillary pressure and storage capacity. Adv. Water Resour., (in press).
- Remeysen, K., Swennen, R., 2006. Beam hardening artifact reduction in microfocus computed tomography for improved quantitative coal characterization. Int. J. Coal Geol., 67, 101-111.
- Shi, J.Q., Xue, Z., Durucan, S., 2011. Supercritical CO2 core flooding and imbibition in Tako sandstone-influence of subcore scale heterogeneity. Int. J. Greenh. Gas Control, 5, 75-87.
- Stock, S.R., Nagaraja, S., Barss, J., Dahl, T., Veis, A., 2003. Xray microCT study of pyramids of the sea urchin Lytechinus variegatus. J. Struct. Biol., 141, 9-21.
- Tsuchiyama, A., Hanamoto, T., Nakashima, Y., Nakano, T., 2000. Quantitative evaluation of attenuation contrast of minerals by using a medical X-ray CT scanner. J. Miner. Petrol. Sci., 95, 125-137.
- Uemura, S., Fukabori, D., Tsushima, S., Hirai, S., 2012. Visualization and analysis of CO2 permeation process in a porous media by microfocus X-ray computed tomography. Trans. Jpn. Soc. Mech. Eng. Ser B, 78, 74-82.
- Uemura, S., Kataoka, R., Fukabori, D., Tsushima, S., Hirai, S., 2011. Experiment on liquid and supercritical CO2 distribution using micro-focus X-ray CT for estimation of geological storage. Energy Procedia, 4, 5102-5107.
- Watanabe, N., Ishibashi, T., Tsuchiya, N., Ohsaki, Y., Tamagawa, T., Tsuchiya, Y., Okabe, H., Ito, H., 2013. Geologic core holder with a CFR PEEK body for the X-ray CT-based numerical analysis of fracture flow under confining pressure. Rock Mech. Rock Eng., 46, 413-418.
- Wellington, S.L. Vinegar, H.J., 1987. X-ray computerized tomography. J. Petrol. Technol., 39, 885-898.
- Werth, C.J., Zhang, C., Brusseau, M.L., Oostrom, M., Baumann, T., 2010. A review of non-invasive imaging methods and applications in contaminant hydrogeology research. J.\ Contam. Hydrol., 113, 1-24.
- Wildenschild, D., Sheppard, A.P., 2013. X-ray imaging and analysis techniques for quantifying pore-scale structure and processes in subsurface porous medium systems. Adv. Water Resour., 51, 217-246.
- Wildenschild, D., Vaz, C.M.P., Rivers, M.L., Rikard, D., Christensen, B.S.B., 2002. Using X-ray computed tomography in hydrology: systems, resolutions, and limitations. J. Hydrol., 267, 285-297.
- Zhou, N., Matsumoto, T., Hosokawa, T., Suekane, T., 2010. Pore-Scale visualization of gas trapping in porous media by X-ray CT scanning. Flow Meas. Instrum., 21, 262-267.
- Conceição, P.C., Boeni, M., Dieckow, J., Bayer, C., Mielniczuk, J., 2008. Fracionamento densimétrico com politungstato de sódio no estudo da proteção física da matéria orgânica em solos. R. Bras. Ci. Solo, 32, 541-549.
- Gregory, M.R., Johnston, K.A., 1987. A nontoxic substitute forhazardous heavy liquid - aqueous sodium polytungstate (3Na2WO4. 9WO3. H2O) solution. N. Z. J. Geol. Geophys., 30, 317-320.
- Munsterman, D., Kerstholt, S., 1996. Sodium polytungstate, a new non-toxic alternative to bromoform in heavy liquid separation. Rev. Palaeobot. Palynology, 91, 417-422.
- Skipp, G.L., Brownfield, I., 1993. Improved density gradient separation techniques using sodium polytungstate and a comparison to the use of other heavy liquids. US Geological Survey. Open-File Report, 92-386.
- Torresan, M., 1987. The use of sodium polytungstate in heavy mineral separations. US Geological Survey. Open-File Report, 87-590.