Index Catalog // ScholarsArchive@OSU

Creator:: Gray, Myles, Johnson, Mark G., Dragila, Maria I., and Kleber, Markus
Abstract:: We assessed the effects of porosity and hydrophobicity on water uptake by biochars. Biochars were produced from two feedstocks (hazelnut shells and Douglas fir chips) at three production temperatures (370°C, 500°C, and 620°C). To distinguish the effects of porosity from the effects of hydrophobicity, we compared uptake of water to...
Resource Type:: Article

Creator:: Stewart, Ryan D., Abou Najm, Majdi R., Rupp, David E., and Selker, John S.
Abstract:: Shrinkage cracks in soil function as a dominant control on the partitioning and distribution of moisture fluxes in the vadose zone. Their dynamics influence moisture balance and control water availability for runoff, deep infiltration, and near-surface storage. We present a new low-cost field instrument to monitor the temporal change in...
Resource Type:: Article
Full Text:: , Maria Brown, Nick Dummer, Chuan Li, Wiebke Boettche, Felipe Bretón, 282 Sebastián Bonelli, Hector

Creator:: Weisbrod, Noam, McGinnis, Thomas, Rockhold, Mark L., Niemet, Michael R., and Selker, John S.
Abstract:: Surface tensions of high-salinity solutions are significantly different from those of pure water. Our objective was to develop and test a methodology to determine whether these surface tension effects predictably alter imbibition into dry and moist porous media. Static and dynamic experiments were performed using four grades of quartz sand...
Resource Type:: Article
Full Text:: . [30] Acknowledgments. We would like to thank Maria Dragila for many constructive discussions during

Creator:: Zeglin, L. H., Bottomley, Peter J., Jumpponen, A., Rice, C. W., Arango, M., Lindsley, A., McGowan, A., Mfombep, P., and Myrold, D. D.
Abstract:: Climate change models predict that future precipitation patterns will entail lower-frequency but larger rainfall events, increasing the duration of dry soil conditions. Resulting shifts in microbial C cycling activity could affect soil C storage. Further, microbial response to rainfall events may be constrained by the physiological or nutrient limitation stress...
Resource Type:: Article
Full Text:: , particularly, John Blair, Patrick O’Neal, and Jeff Taylor. Thanks to Maria Dragila and Nathaniel Tisdell for

Creator:: Burns, Erick R., Selker, John S., Parlange, Jean-Yves, and Guenther, Ronald B.
Abstract:: Though many arid and contaminated sites have high salinity, prediction of effects of salinity on water movement in soils has been based on dilute solution approximations. Here a sensitivity analysis compares predicted liquid and vapor pressure in variably saturated porous media found using both the dilute approximations and a more...
Resource Type:: Article
Full Text:: negligible amount of salt). [60] Acknowledgments. Many thanks to Maria Dragila, Noam Weisbrod, Don Solmon

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