Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Ravi K. Kukkadapu"'
Autor:
Desiree P. Hullaster, Gerilyn S. Soreghan, Ravi K. Kukkadapu, Brock S. Dumont, Kato T. Dee, Andrew S. Elwood Madden
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
Siliciclastic strata of the Colorado Plateau attract attention for their striking red, green, bleached, and variegated colors that potentially record both early depositional and later diagenetic events. We investigated the proximal-most strata of the
Externí odkaz:
https://doaj.org/article/4fe52a74066c4cf3a0cbf10788857076
Autor:
Kenton A. Rod, Kaizad F. Patel, Swatantar Kumar, Elizabeth Cantando, Weinan Leng, Ravi K. Kukkadapu, Odeta Qafoku, Mark Bowden, Daniel I. Kaplan, Kenneth M. Kemner
Publikováno v:
Frontiers in Water, Vol 2 (2020)
In aqueous systems, including groundwater, nano-colloids (1–100 nm diameter) and small colloids (
Externí odkaz:
https://doaj.org/article/f10aa77c724647dc8d12121de20d3876
Autor:
Kenton A. Rod, A. Peyton Smith, Weinan Leng, Sean Colby, Ravi K. Kukkadapu, Mark Bowden, Odeta Qafoku, Wooyong Um, Michael F. Hochella Jr., Vanessa L. Bailey, Ryan S. Renslow
Publikováno v:
Vadose Zone Journal, Vol 19, Iss 1, Pp n/a-n/a (2020)
Abstract Increasing temperatures in alpine regions accompanied by glacial retreat is occurring rapidly due to climate change. This may affect riparian soils by increasing weathering rates, resulting in greater organic carbon (OC) release to rivers vi
Externí odkaz:
https://doaj.org/article/45e36115b7064084a2a2ca96700cab79
Publikováno v:
Environmental Science & Technology. 56:14452-14461
Aquifer groundwater quality is largely controlled by sediment composition and physical heterogeneity, which commonly sustains a unique redox gradient pattern. Attenuation of heavy metals within these heterogeneous aquifers is reliant on multiple fact
Autor:
Odeta Qafoku, Amity Andersen, William R. Kew, Ravi K. Kukkadapu, Sarah D. Burton, Libor Kovarik, Qian Zhao, Sebastian T. Mergelsberg, Thomas W. Wietsma, Charles T. Resch, James J. Moran, Nikolla P. Qafoku, Mark E. Bowden
Publikováno v:
ACS Earth and Space Chemistry. 6:1674-1687
Publikováno v:
Soil Science Society of America Journal. 86:264-274
Autor:
Hailiang Dong, Shuisong Ni, Yizhi Sheng, Gary A. Lorigan, Ravi K. Kukkadapu, Robert M. McCarrick, Jinglong Hu, Simin Zhao, Qiang Zeng, Ethan Coffin, Andre J. Sommer
Publikováno v:
Geochimica et Cosmochimica Acta. 307:1-21
Lignin is a major component of plant-derived soil organic matter (SOM) in soils and sediments. Fe-bearing clay minerals are widely distributed in these environments and often co-exist with lignin. While previous studies have reported the electron shu
Autor:
Maya Engel, Vincent Noël, Samuel Pierce, Libor Kovarik, Ravi K. Kukkadapu, Juan S. Lezama Pacheco, Odeta Qafoku, J. Ray Runyon, Jon Chorover, Weijiang Zhou, John Cliff, Kristin Boye, John R. Bargar
Publikováno v:
Water Research. 238:119990
Autor:
Odeta Qafoku, Libor Kovarik, Tatiana G. Levitskaia, Hilary P. Emerson, Daria Boglaienko, Denis E. Cherkasov, Ravi K. Kukkadapu, Yelena Katsenovich
Publikováno v:
Environmental Science: Nano. 8:97-109
Nano-structural transformation of iron minerals in the natural environment is altered and often retarded in the presence of silica (e.g., impeded transformation of ferrihydrite) resulting in a modulated interaction with constituents or contaminants p
Autor:
Gabriel B. Hall, Edgar C. Buck, Daria Boglaienko, Tatiana G. Levitskaia, Yelena Katsenovich, Vanessa E. Holfeltz, Jennifer A. Soltis, Carlo U. Segre, Lucas E. Sweet, Yingge Du, Ravi K. Kukkadapu, Hilary P. Emerson
Publikováno v:
Communications Chemistry, Vol 3, Iss 1, Pp 1-11 (2020)
The sequestration of metal ions into the crystal structure of minerals is common in nature. To date, the incorporation of technetium(IV) into iron minerals has been studied predominantly for systems under carefully controlled anaerobic conditions. Me