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Browsing Faculty Research Publications (School of Chemical, Biological and Environmental Engineering) by Title

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Browsing Faculty Research Publications (School of Chemical, Biological and Environmental Engineering) by Title

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  • Sayde, Chadi; Gregory, Christopher; Gil‐Rodriguez, Maria; Tufillaro, Nick; Tyler, Scott; van de Giesen, Nick; English, Marshal; Cuenca, Richard; Selker, John S. (American Geophysical Union, 2010-06-05)
    Accurate methods are needed to measure changing soil water content from meter to kilometer scales. Laboratory results demonstrate the feasibility of the heat pulse method implemented with fiber optic temperature sensing ...
  • Selker, John; van de Giesen, Nick; Westhoff, Martijn; Luxemburg, Wim; Parlange, Marc B. (American Geophysical Union, 2006-12-19)
    A new approach to monitoring surface waters using distributed fiber optic temperature sensing is presented, allowing resolutions of temperature of 0.01°C every meter along a fiber optic cable of up to 10,000 m in length. ...
  • Louie, Michael J.; Shelby, Patrick M.; Smesrud, Jason S.; Gatchell, Lance O.; Selker, John S. (American Geophysical Union, 2000-09)
    Passive capillary samplers (PCAPS), which sample water from the vadose zone via a hanging water column in a fiberglass wick, have shown potential to provide superior estimates of soil water flux compared to alternative m ...
  • Selker, J.; Leclerq, P.; Parlange, J.-Y.; Steenhuis, T. (American Geophysical Union, 1992-09)
    Precise management of the changing matric potential during infiltration into unsaturated soil required the development of miniature, high-speed, planar tensiometers. A novel design was developed, with response time of le ...
  • Selker, J.; Parlange, J.-Y.; Steenhuis, T. (A merican Geophysical Union, 1992-09)
    An exact integral solution for the moisture profile in growing fingers in sandy soil is derived from Richards' equation. The solution provides moisture content along a finger as a function of position and time and provid ...
  • Jansik, D. P.; Wildenschild, D.; Rosenberg, N. D. (Soil Science Society of America, 2011-08-31)
    Engineered capillary barriers typically consist of two layers of granular materials designed so that the contrast in material hydraulic properties and sloping interface retain infiltrating water in the upper layer. We co ...
  • Rajachidambaram, Meena S.; Varga, Tamas; Kovarik, Libor; Sanghavi, Rahul; Shutthanandan, Vaithiyalingam; Thevuthasan, Suntharampillai; Han, Seung-Yeol; Chang, Chih-Hung; Herman, Gregory S. (AVS: Science & Technology of Materials, Interfaces, and Processing, 2012-07)
    The thermal oxidation of submicron metallic Zn particles was studied as a method to form nanostructured ZnO films. The particles used for this work were characterized by electron microscopy, x ray diffraction, and therma ...
  • Boll, Jan; Selker, John S.; Shalit, Gil; Steenhuis, Tammo S. (American Geophysical Union, 1997-12)
    Modeling of water and solute movement requires knowledge of the nature of the spatial distribution of transport parameters. Only a few of the field experiments reported in the literature contained enough measurements to ...
  • Walter, M. T.; Kim, J.-S.; Steenhuis, T. S.; Parlange, J.-Y.; Heilig, A.; Braddock, R. D.; Selker, J. S.; Boll, J. (American Geophysical Union, 2000-04)
    Artificial capillary barriers are being used to divert water away from sensitive underground regions. Conversely, funneled flow over natural capillary barriers may increase the danger of groundwater contamination by decr ...
  • Ferre, Ty P. A.; Selker, John S. (American Geophysical Union, 2007-12-21)
    A new apparatus is presented that is capable of applying a constant fluid pressure at inflow and outflow boundaries. The apparatus can be refilled during operation and does not rely on an overflow mechanism. The device i ...
  • Selker, John S.; Duan, Jinfan; Parlange, Jean-Yves (American Geophysical Union, 1999-05)
    Most expressions for infiltration rely upon the assumption of vertical uniformity in soil texture and hydraulic properties. We present an extension of the results of Beven [1982, 1984] for infiltration and lateral flow i ...
  • Widrlechner, Mark P.; Daly, Christopher; Keller, Markus; Kaplan, Kim (American Society for Horticultural Science, 2012-02)
    The accurate prediction of winter injury caused by low-temperature events is a key component of the effective cultivation of woody and herbaceous perennial plants. A common method employed to visualize geographic pattern ...
  • Yarwood, R. R.; Rockhold, M. L.; Niemet, M. R.; Selker, J. S.; Bottomley, P. J. (American Geophysical Union, 2006-10-05)
    A novel analytical method was developed that permitted real-time, noninvasive measurements of microbial growth and associated changes in hydrodynamic properties in porous media under unsaturated flowing conditions. Salic ...
  • Flint, Lorraine E.; Flint, Alan L.; Selker, John S. (American Geophysical Union, 2003-04-03)
    Natural hydraulic barriers exist at Yucca Mountain, Nevada, a potential high-level nuclear waste repository, that have been identified as possible lateral diversions for reducing deep percolation through the waste storag ...
  • Armstrong, Ryan T.; Wildenschild, Dorthe (Elsevier, 2012-09)
    Microbial Enhanced Oil Recovery (MEOR) is a process where microorganisms are used for tertiary oil recovery. Numerous mechanisms have been proposed in the literature through which microorganisms facilitate the mobilizati ...
  • Armstrong, Ryan T.; Porter, Mark L.; Wildenschild, Dorthe (Elsevier, 2012-09)
    Synchrotron-based tomographic datasets of oil–water drainage and imbibition cycles have been analyzed to quantify phase saturations and interfacial curvature as well as connected and disconnected fluid configurations. Th ...
  • Benson, James D.; Kearsley, Anthony J.; Higgins, Adam Z. (Elsevier, 2012-06)
    Cryopreservation nearly universally depends on the equilibration of cells and tissues with high concentrations of permeating chemicals known as cryoprotective agents, or CPAs. Despite their protective properties, CPAs ca ...
  • Fry, Allyson K.; Higgins, Adam Z. (Springer, 2012-09)
    Vitrification is a promising approach for cryopreservation of adherent cells because it allows complete avoidance of ice formation. However, high cryoprotectant (CPA) concentrations are required to prevent freezing, and ...
  • Ochiai, Naoyuki; Kraft, Erika L.; Selker, John S. (American Geophysical Union, 2006-12-20)
    Prediction of colloid transport in the subsurface is relevant to researchers in a variety of fields such as contaminant transport, wastewater treatment, and bioremediation. Investigations have traditionally relied on col ...
  • Hackleman, David; Smith, Connor J.; Lebsack, Jonathan (2012-07-27)
    An in-field test of the solvent free microwave extraction of peppermint oil was held in mid-August 2009 at Butler Valley Farms in Stayton, Oregon. Results of the trial were limited due to rapid coalescence of the mint oi ...

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