Publications

Vadose Zone Modeling: Introduction and Importance - (Review Article)

Simunek, J., Bradford, S.A. 2008. Vadose Zone Modeling: Introduction and Importance. Vadose Zone Journal. Vol 7:581-586

Microbiological Evaluation of fecal bacterial Composition from surface water through Aquifer Sand Material - (Peer Reviewed Journal)

Ibekwe, A.M., Lyon, S.R. 2008. Microbiological Evaluation of fecal bacterial Composition from surface water through Aquifer Sand Material. Journal of Water and Health. Vol 6 No 3:411-421

Transport and Fate of Bacteria in Porous Media: Coupled Effects of Chemical Conditions and Pore Space Geometry - (Peer Reviewed Journal)

Torkzaban, S., Tazehkand, S.S., Walker, S.L., Bradford, S.A. 2008. Transport and Fate of Bacteria in Porous Media: Coupled Effects of Chemical Conditions and Pore Space Geometry. Water Resources Research. Vol 44:1-12

Colloid Transport in Unsaturated Porous Media: The Role of Water Content and Ionic Strength on Particle Straining - (Peer Reviewed Journal)

Torksaban, S., Bradford, S.A., Van Genuchten, M.T., Walker, S.L. 2007. Colloid Transport in Unsaturated Porous Media: The Role of Water Content and Ionic Strength on Particle Straining. Journal of Contaminant Hydrology. Vol 96:113-127

Reuse of concentrated animal feed operation wastewater on agricultural lands - (Peer Reviewed Journal)

Bradford, S.A., Segal, E., Zhang, W., Wang, Q. 2008. Reuse of concentrated animal feed operation wastewater on agricultural lands. Journal of Environmental Quality. Vol 37:S97-S115

Resolving the coupled effects of hydrodynamics and DLVO forces on colloid attachment in porous media - (Peer Reviewed Journal)

Torkzaban, S., Bradford, S.A., Walker, S.L. 2007. Resolving the coupled effects of hydrodynamics and DLVO forces on colloid attachment in porous media. Langmuir. Vol 23:9652-9660

Colloid Transport and Retention in Unsaturated Porous Media: A Review of Interface-Collector, and Pore-Scale Processes and Models - (Peer Reviewed Journal)

Bradford, S.A., Torkzaban, S. 2008. Colloid Transport and Retention in Unsaturated Porous Media: A Review of Interface-Collector, and Pore-Scale Processes and Models. Vadose Zone Journal. Vol 7:667-681

Integration of Hard and Soft Data to Characterize Field-Scale Hydraulic Properties for Flow and Transport Studies - (Peer Reviewed Journal)

Segal, E., Bradford, S.A., Shouse, P.J., Lazarovitch, N., Corwin, D.L. 2008. Integration of Hard and Soft Data to Characterize Field-Scale Hydraulic Properties for Flow and Transport Studies. Vadose Zone Journal. Vol 7, No. 3:878-889

CHARACTERIZATION OF DEVELOPING MICROBIAL COMMUNITIES IN MOUNT ST. HELEN'S PYROCLASTIC SUBSTRATE - (Peer Reviewed Journal)

Ibekwe, A.M., Kennedy, A.C., Halvorson, J.J., Yang, C. 2007. Characterization of developing microbial communities in Mount St. Helen's pyroclastic substrate. Soil Biology and Biochemistry. Vol 39:2496-2507

BACTERIA TRANSPORT AND DEPOSITION UNDER UNSATURATED FLOW CONDITIONS: THE ROLE OF WATER CONTENT AND BACTERIA SURFACE HYDROPHOBICITY - (Peer Reviewed Journal)

Gargiulo, G., Bradford, S.A., Simunek, J., Ustohal, P., Vereecken, H., Klumpp, E. 2008. Bacteria transport and deposition under unsaturated flow conditions: the role of water content and bacteria surface hydrophobicity. Vadose Zone Journal. Vol 7(2):406-419

Coupling of physical and chemical mechanisms of colloid straining in saturated porous media - (Peer Reviewed Journal)

Bradford, S.A., Torkzaban2, S., Walker, S.L. 2007. Coupling of physical and chemical mechanisms of colloid straining in saturated porous media. Water Resources Research. Vol 41:3012-3024

A Stochastic Model for Colloid Transport and Deposition - (Peer Reviewed Journal)

Bradford, S.A., Toride, N. 2007. A stochastic model for colloid transport and deposition. Journal of Environmental Quality. Vol 36:1346-1356

BACTERIA TRANSPORT AND DEPOSITION UNDER UNSATURATED CONDITIONS: THE ROLE OF THE MATRIX GRAIN SIZE AND THE BACTERIA SURFACE PROTEIN - (Peer Reviewed Journal)

Gargiulo, G., Bradford, S.A., Simunek, J., Ustohal, P., Vereecken, H., Klumpp, E. 2007. Bacteria transport and deposition under unsaturated conditions: the role of the matrix grain size and the bacteria surface protein. Journal of Contaminant Hydrology. Vol 92:255-273

SURVIVAL OF ESCHERICHIA COLI O157:H7 IN SOIL AND ON LETTUCE AFTER FUMIGATION - (Peer Reviewed Journal)

Ibekwe, A.M., Grieve, C.M., Yang, C. 2007. Survival of Escherichia Coli O157:H7 in soil and on lettuce after fumigation. Canadian Journal of Microbiology. Vol. 53:623-635

TRANSPORT AND DEPOSITION OF METABOLICALLY ACTIVE AND STATIONARY PHASE DEINOCOCCUS RADIODURANS IN UNSATURATED POROUS MEDIA - (Peer Reviewed Journal)

Gargiulo, G., Bradford, S.A., Simunek, J., Vereecken, H., Klumpp, E. 2007. Transport and deposition of metabolically active and stationary phase deinococcus radiodurans in unsaturated porous media. Environmental Science and Technology. Vol 41:1265-1271

Fate of E. coli O157:H7 in the Environment - (Abstract)

Ibekwe, A.M. 2006. Fate of E. coli O157:H7 in the Environment. Soil Science Society of America Annual Meeting in Indianapolis, IN Nov 12-16, 2006. Paper No. 88-4

Bacterial Composition in Urban Watershed Creeks Impacted by Contaminants from different Sources. - (Abstract)

Ibekwe, A.M., Lyon, S.R. 2006. Bacterial Composition in Urban Watershed Creeks Impacted by Contaminants from different Sources. Soil Science Society of America Annual Meeting in Indianapolis, IN Nov 12-16, 2006. Paper No. 186-2

Soil Diversity Along a Forest Profile Using PCR-DGGE - (Abstract)

Thompson, M., Moss, E., Ibekwe, A.M., Senwo, Z., Taylor, R. 2006. Soil Diversity Along a Forest Profile Using PCR-DGGE. Soil Science Society of America Annual Meeting in Indianapolis, IN Nov 12-16, 2006. CD-ROM

Evaluation of the Effects of Tillage on Selected Soil Enzyme Activities and Soil Microbial Diversity - (Abstract)

Durant, M., Ankumah, R., Corley, M., Ibekwe, A.M., Mcintyre, S.C. 2006. Evaluation of the Effects of Tillage on Selected Soil Enzyme Activities and Soil Microbial Diversity. Soil Science Society of America Annual Meeting in Indianapolis, IN Nov 12-16, 2006. CD-ROM

Evaluation of the Effect of Arsenic Contamination on Selected Soil Enzyme Activities and Microbial Diversity - (Abstract)

Garuba, I., Ankumah, R., Ibekwe, A.M., Corley, M., Egnin, M. 2006. Evaluation of the Effect of Arsenic Contamination on Selected Soil Enzyme Activities and Microbial Diversity. Soil Science Society of America Annual Meeting in Indianapolis, IN Nov 12-16, 2006. CD-ROM.

Transport and Straining of E. coli O157:H7 in Saturated Porous Media - (Abstract)

Bradford, S.A., Simunek, J., Walker, S.L. 2006. Transport and Straining of E. coli O157:H7 in Saturated Porous Media. American Society of Agronomy Meetings in Indianapolis, IN Nov 12-16, 2006. Paper No. 277-5

Transport of Latex Particles in Variably Saturated Heterogeneous Media - (Abstract)

Han, J., Bradford, S.A., Jin, Y. 2006. Transport of Latex Particles in Variably Saturated Heterogeneous Media. American Society of Agronomy Meetings in Indianapolis, IN Nov 12-16, 2006. Paper No. 182-16

Transport and Fate of Nitrate and Pathogens at a Dairy Lagoon Water Application Site - (Abstract)

Segal, E., Bradford, S.A., Lazarovitch, N., Shouse, P.J. 2006. Transport and Fate of Nitrate and Pathogens at a Dairy Lagoon Water Application Site. American Society of Agronomy Meetings in Indianapolis, IN Nov 12-16, 2006. CD-ROM.

Quantification of survival of Escherichia coli 0157:H7 on Plants affected by Contaminated Irrigation Water - (Peer Reviewed Journal)

Ibekwe, A.M., Shouse, P.J., Grieve, C.M. 2006. Quantification of survival of Escherichia Coli 0157:H7 on Plants affected by Contaminated Irrigation Water. Engineering in Life Sciences. Vol. 6:566-572

TRANSPORT AND STRAINING OF E. COLI O157:H7 IN SATURATED POROUS MEDIA - (Peer Reviewed Journal)

Bradford, S.A., Simunek, J., Walker, S.L. 2006. Transport and straining of E. coli O157:H7 in saturated porous media. Water Resources Research. VOL 42, W12S12

SIGNIFICANCE OF STRAINING IN COLLOID DEPOSITION: EVIDENCE AND IMPLICATIONS - (Peer Reviewed Journal)

Bradford, S.A., Simunek, J., Bettahar, M., Van Genuchten, M.T., Yates, S.R. 2006. Significance of straining in colloid deposition: evidence and implications. Water Resources Research. VOL 42, W12S15

IMPACT OF PLANT DENSITY AND MICROBIAL COMPOSITION ON WATER QUALITY FROM A FREE WATER SURFACE CONSTRUCTED WETLAND - (Peer Reviewed Journal)

Ibekwe, A.M., Lyon, S.R., Leddy, M., Jacobson-Meyers, M. 2007. Impact of plant density and microbial composition on water quality from a free water surface constructed wetland. Journal of Applied Microbiology. 102:921-936

IMPACT OF PLANT DENSITY AND MICROBIAL COMPOSITION ON WATER QUALITY FROM A FREE WATER SURFACE CONSTRUCTED WETLAND - (Abstract)

Ibekwe, A.M. 2006. Impact of plant density and microbial composition on water quality from a free water surface constructed wetland. American Society of Agronomy Abstracts, annual meeting, Salt Lake City, UT. [CD-ROM]

PERSISTENCE OF ESCHERICHIA COLI O157:H7 IN SOIL AFTER FUMIGATIONS - (Abstract)

Ibekwe, A.M., Grieve, C.M., Yang, C.-. 2006. Persistence of escherichia coli O157:H7 in soil after fumigations. [CD-ROM] American Society for Microbiology Annual Meeting. Orlando, FL.

COUPLING OF PHYSICAL AND CHEMICAL MECHANISMS OF COLLOID DEPOSITION - (Abstract)

Bradford, S.A., Torkzaban, S., Walker, S. 2006. Coupling of physical and chemical mechanisms of colloid deposition. Annual Colloid and Surface Science Symposium. Paper No. 63.

COLLOID TRANSPORT IN UNSATURATED POROUS MEDIA: THE ROLE OF WATER CONTENT AND IONIC STRENGTH ON PARTICLE STRAINING - (Abstract)

Torkzaban, S., Bradford, S.A., Walker, S. 2006. Colloid transport in unsaturated porous media: the role of water content and ionic strength on particle straining. Annual Colloid and Surface Science Symposium. Paper No. 21.

A NEW PARADIGM FOR PATHOGEN TRANSPORT AND DEPOSITION IN POROUS MEDIA: THE ROLE OF PORE STRUCTURE AND COLLOID-COLLOID INTERACTIONS - (Abstract)

Walker, S., Bradford, S.A. 2006. A new paradigm for pathogen transport and deposition in porous media: the role of pore structure and colloid-colloid interactions. Annual Colloid and Surface Science Symposium. Paper No. 14.

TRANSPORT OF COLIPHAGE IN THE PRESENCE AND ABSENCE OF MANURE SUSPENSION - (Peer Reviewed Journal)

Bradford, S.A., Tadassa, Y.F., Jin, Y. 2006. Transport of coliphage in the presence and absence of manure suspension. Environmental Science and Technology. VOL 35:1692-1701

COLLOID-FACILITATED SOLUTE TRANSPORT IN VARIABLY-SATURATED POROUS MEDIA: NUMERICAL MODEL AND EXPERIMENTAL VERIFICATION - (Peer Reviewed Journal)

Simunek, J., He, C., Pang, L., Bradford, S.A. 2006. Colloid-facilitated solute transport in variably-saturated porous media: numerical model and experimental verification. Vadose Zone Journal. Vol 5:1035-1047

REAL-TIME PCR QUANTIFICATION OF PERSISTENCE OF ESCHERICHIA COLI O157:H7 IN SOIL IMPACTED BY FUMIGATIONS - (Abstract)

Ibekwe, A.M., Grieve, C.M. 2006. Real-time pcr quantification of persistence of escherichia coli o157:h7 in soil impacted by fumigations. (Abstract) CD-ROM. Annual Quantitative Polymerase Chain Reaction (PCR) Meeting.

INTERFACIAL AREA ESTIMATES FOR A NAPL-WATER SYSTEM AND THEIR EFFECT ON PREDICTING GROUNDWATER REMEDIATION EFFICIENCY - (Abstract)

Wildenschild, D., Bradford, S.A. 2005. Interfacial area estimates for a napl-water system and their effect on predicting groundwater remediation efficiency. EOS Transactions, Fall Meeting. 86:H33A-1372. American Geophysical Union.

RESPONSE OF MATTHIOLA INCANA TO IRRIGATION WITH SALINE WASTEWATERS - (Peer Reviewed Journal)

Grieve, C.M., Poss, J.A., Amrhein, C. 2006. Response of Matthiola incana to Irrigation with Saline Wastewaters. HortScience. 41:119-123.

SIGNIFICANCE OF STRAINING IN COLLOID DEPOSITION: EVIDENCE AND IMPLICATIONS - (Abstract)

Bradford, S.A., Simunek, J., Bettahar, M., Van Genuchten, M.T., Yates, S.R. 2005. Significance of straining in colloid deposition: evidence and implications. Geological Society of America Meeting. Paper No. 243-4

TRANSPORT OF GIARDIA AND MANURE SUSPENSIONS IN SATURATED POROUS MEDIA - (Peer Reviewed Journal)

Bradford, S.A., Tadassa, Y.F., Pachepsky, Y.A. 2006. Transport of giardia and manure suspensions in saturated porous media. Journal of Environmental Quality. 35:749-757.

MODELING OF COLLOID TRANSPORT AND DEPOSITION IN POROUS MEDIA - (Proceedings/Symposium)

Bradford, S.A., Van Genuchten, M.T., Simunek, J. 2005. Modeling of colloid transport and deposition in porous media. Proceedings of the workshop on HYDRUS Applications, Oct. 19, 2005, Utrecht Univ., The Netherlands. p. 1-5.

IMPACT OF PLANT SPECIES AND DENSITY ON MICROBIAL COMMUNITY COMPOSITION IN A FREE WATER SURFACE CONSTRUCTED WETLAND - (Abstract)

Ibekwe, A.M., Leddy, M., Lyon, S.R., Jacobson, M. 2005. Impact of plant species and density on microbial community composition in a free water surface constructed wetland. American Society for Microbiology Annual Meeting. CD-ROM, Atlanta, GA.

DETERMINING RATE OF CHANGE IN CUCUMBER RHIZOSPHERE MICROBIAL COMMUNITY COMPOSITION IN RESPONSE TO SOIL PH, SALINITY, AND BORON - (Proceedings/Symposium)

Ibekwe, A.M., Grieve, C.M., Poss, J.A., Grattan, S., Suarez, D.L. 2005. Determining rate of change in cucumber rhizosphere microbial community composition in response to soil pH, salinity, and boron. In: Proceedings of the International Salinity Forum, Managing Saline Soils and Water: Science, Technology, and Soil Issues. April 25-27, 2005. Riverside, CA pp:77-80.

PERSISTENCE OF ESCHERICHIA COLI O157:H7 IN RHIZOSPHERE AND NON-RHIZOSPHERE SOILS AFTER FUMIGATION - (Abstract)

Ibekwe, A.M. 2005. Persistence of Escherichia coli O157:H7 in rhizosphere and non-rhizosphere soils after fumigation. International Union of Microbiological Societies Proceedings/Abstracts. Page 18.

COLLOID-FACILITATED TRANSPORT IN VARIABLY SATURATED POROUS MEDIA: NUMERICAL MODELING AND EXPERIMENTAL VERIFICATION. - (Abstract)

He, C., Simunek, J., Pang, L., Bradford, S.A. 2005. Colloid-facilitated transport in variably saturated porous media: numerical modeling and experimental verification. [CD-ROM] Agronomy Abstracts. SSSA Annual Meeting. Salt Lake City, UT.

CONCENTRATION DEPENDENT COLLOID TRANSPORT IN SATURATED POROUS MEDIA - (Abstract)

Bradford, S.A. 2005. Concentration dependent colloid transport in saturated porous media. American Chemical Society Abstracts, San Diego, CA. 229:U646-U647.