@article{deviney_classen_bruce_2023, title={A methodology for using a multilevel perspective framework to analyze complex systems}, url={https://doi.org/10.1177/20597991231160280}, DOI={10.1177/20597991231160280}, journal={Methodological Innovations}, author={Deviney, Alison V and Classen, John J and Bruce, Jacklyn A}, year={2023}, month={Mar} }
 @article{patil_sharara_shah_kulesza_classen_2023, title={Impacts of utilizing swine lagoon sludge as a composting ingredient}, volume={327}, ISSN={["1095-8630"]}, url={https://doi.org/10.1016/j.jenvman.2022.116840}, DOI={10.1016/j.jenvman.2022.116840}, journal={JOURNAL OF ENVIRONMENTAL MANAGEMENT}, author={Patil, Piyush and Sharara, Mahmoud and Shah, Sanjay and Kulesza, Stephanie and Classen, John}, year={2023}, month={Feb} }
 @misc{sharara_kolesch_cortus_larson_classen_janni_2022, title={ADDRESSING NUTRIENT IMBALANCES IN ANIMAL AGRICULTURE SYSTEMS}, volume={65}, ISSN={["2769-3287"]}, DOI={10.13031/ja.14661}, number={2}, journal={JOURNAL OF THE ASABE}, author={Sharara, Mahmoud and Kolesch, Richard K. and Cortus, Erin L. and Larson, Rebecca A. and Classen, John J. and Janni, Kevin A.}, year={2022}, pages={235–249} }
 @article{akter_cheng_west_liu_qian_zou_classen_cordova_oviedo_wang-li_2022, title={Impacts of Air Velocity Treatments under Summer Condition: Part I-Heavy Broiler's Surface Temperature Response}, volume={12}, ISSN={["2076-2615"]}, url={https://doi.org/10.3390/ani12030328}, DOI={10.3390/ani12030328}, number={3}, journal={ANIMALS}, publisher={MDPI AG}, author={Akter, Suraiya and Cheng, Bin and West, Derek and Liu, Yingying and Qian, Yan and Zou, Xiuguo and Classen, John and Cordova, Hernan and Oviedo, Edgar and Wang-Li, Lingjuan}, year={2022}, month={Feb} }
 @article{akter_liu_cheng_classen_oviedo_harris_wang-li_2022, title={Impacts of Air Velocity Treatments under Summer Conditions: Part II-Heavy Broiler's Behavioral Response}, volume={12}, ISSN={["2076-2615"]}, url={https://doi.org/10.3390/ani12091050}, DOI={10.3390/ani12091050}, number={9}, journal={ANIMALS}, publisher={MDPI AG}, author={Akter, Suraiya and Liu, Yingying and Cheng, Bin and Classen, John and Oviedo, Edgar and Harris, Dan and Wang-Li, Lingjuan}, year={2022}, month={May} }
 @article{bird_nichols_garay_nowatzke_essary_post_deviney_welles_alao_dorbu_et al._2022, title={Means, motive, and opportunity: A method for understanding stakeholder agency within food-energy-water systems}, volume={10}, ISSN={["2325-1026"]}, DOI={10.1525/elementa.2021.00066}, number={1}, journal={ELEMENTA-SCIENCE OF THE ANTHROPOCENE}, author={Bird, Kate I. T. and Nichols, Virginia A. and Garay, Eduardo S. and Nowatzke, Matthew and Essary, Ch'Ree and Post, Kimberly K. and Deviney, Alison V and Welles, Jacqueline S. and Alao, Mumuni O. and Dorbu, Freda Elikem and et al.}, year={2022}, month={Mar} }
 @article{cheng_wang-li_classen_bloomfield_2022, title={Performance of a Thermodynamic Model for Predicting Inorganic Aerosols in the Southeastern US}, volume={13}, ISSN={["2073-4433"]}, url={https://doi.org/10.3390/atmos13121977}, DOI={10.3390/atmos13121977}, number={12}, journal={ATMOSPHERE}, author={Cheng, Bin and Wang-Li, Lingjuan and Classen, John and Bloomfield, Peter}, year={2022}, month={Dec} }
 @article{cheng_wang-li_meskhidze_classen_bloomfield_2021, title={Partitioning of NH3-NH4+ in the Southeastern US}, volume={12}, ISSN={["2073-4433"]}, url={https://doi.org/10.3390/atmos12121681}, DOI={10.3390/atmos12121681}, number={12}, journal={ATMOSPHERE}, author={Cheng, Bin and Wang-Li, Lingjuan and Meskhidze, Nicholas and Classen, John and Bloomfield, Peter}, year={2021}, month={Dec} }
 @article{welles_soriano_dorbu_pereira_rubeck_timmermans_ndayambaje_deviney_classen_koziel_et al._2021, title={Socio-Economic and Governance Conditions Corresponding to Change in Animal Agriculture: South Dakota Case Study}, volume={13}, ISSN={["2071-1050"]}, url={https://doi.org/10.3390/su131910682}, DOI={10.3390/su131910682}, number={19}, journal={SUSTAINABILITY}, author={Welles, Jacqueline S. and Soriano, Noelle Cielito T. and Dorbu, Freda Elikem and Pereira, G. M. and Rubeck, Laura M. and Timmermans, Erica L. and Ndayambaje, Benjamin and Deviney, Alison V and Classen, John J. and Koziel, Jacek A. and et al.}, year={2021}, month={Oct} }
 @article{cheng_wang-li_classen_meskhidze_bloomfield_2021, title={Spatial and temporal variations of atmospheric chemical condition in the Southeastern US}, volume={248}, ISSN={["1873-2895"]}, DOI={10.1016/j.atmosres.2020.105190}, journal={ATMOSPHERIC RESEARCH}, author={Cheng, Bin and Wang-Li, Lingjuan and Classen, John and Meskhidze, Nicholas and Bloomfield, Peter}, year={2021}, month={Jan} }
 @article{deviney_classen_bruce_sharara_2020, title={Sustainable Swine Manure Management: A Tale of Two Agreements}, volume={13}, url={https://doi.org/10.3390/su13010015}, DOI={10.3390/su13010015}, number={1}, journal={Sustainability}, publisher={MDPI AG}, author={Deviney, Alison and Classen, John and Bruce, Jackie and Sharara, Mahmoud}, year={2020}, month={Dec}, pages={15} }
 @article{hess_kolar_classen_knappe_cheng_2019, title={Effects of Co-occurring Species Present in Swine Lagoons on Adsorption of Copper on Eggshell}, volume={13}, ISSN={["2008-2304"]}, DOI={10.1007/s41742-019-00203-x}, number={4}, journal={INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH}, author={Hess, Brianna J. and Kolar, Praveen and Classen, John J. and Knappe, Detlef and Cheng, Jay J.}, year={2019}, month={Aug}, pages={613–622} }
 @article{kolar_classen_hall_2019, title={Physicochemical data of p-cresol, butyric acid, and ammonia}, volume={26}, ISSN={["2352-3409"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85071450063&partnerID=MN8TOARS}, DOI={10.1016/j.dib.2019.104356}, journal={DATA IN BRIEF}, author={Kolar, Praveen and Classen, John and Hall, Steven G.}, year={2019}, month={Oct} }
 @article{rodriguez_marshall_cotton_koelsch_koziel_meyer_steward_heemstra_padmanabahn_classen_et al._2019, title={The Development of the INFEWS-ER: A Virtual Resource Center for Transdisciplinary Graduate Student Training at the Nexus of Food, Energy, and Water}, volume={7}, ISSN={["2296-665X"]}, DOI={10.3389/fenvs.2019.00038}, journal={FRONTIERS IN ENVIRONMENTAL SCIENCE}, author={Rodriguez, Luis F. and Marshall, Anna-Maria and Cotton, Dan and Koelsch, Richard and Koziel, Jacek and Meyer, Deanne and Steward, Dan and Heemstra, Jill and Padmanabahn, Anand and Classen, John and et al.}, year={2019}, month={Apr} }
 @article{lentz_kolar_classen_2019, title={Valorization of Swine Manure into Hydrochars}, volume={7}, ISSN={["2227-9717"]}, DOI={10.3390/pr7090560}, number={9}, journal={PROCESSES}, author={Lentz, Zac and Kolar, Praveen and Classen, John J.}, year={2019}, month={Sep} }
 @article{hess_kolar_classen_knappe_cheng_2018, title={Evaluation of Waste Eggshells for Adsorption of Copper from Synthetic and Swine Wastewater}, volume={61}, ISSN={2151-0040}, url={http://dx.doi.org/10.13031/trans.12599}, DOI={10.13031/trans.12599}, abstractNote={<jats:bold><jats:sc>Abstract.}, number={3}, journal={Transactions of the ASABE}, publisher={American Society of Agricultural and Biological Engineers (ASABE)}, author={Hess, Brianna J. and Kolar, Praveen and Classen, John J. and Knappe, Detlef and Cheng, Jay J.}, year={2018}, pages={967–976} }
 @article{kick_zering_classen_2017, title={Approaches to agricultural innovation and their effectiveness}, volume={2}, ISSN={["2471-2086"]}, DOI={10.3934/agrfood.2017.4.370}, number={4}, journal={AIMS AGRICULTURE AND FOOD}, author={Kick, Edward L. and Zering, Kelly and Classen, John}, year={2017}, pages={370–373} }
 @article{das_kolar_sharma-shivappa_classen_osborne_2017, title={Catalytic Valorization of Lignin Using Niobium Oxide}, volume={8}, ISSN={["1877-265X"]}, DOI={10.1007/s12649-016-9717-8}, number={8}, journal={WASTE AND BIOMASS VALORIZATION}, author={Das, Lalitendu and Kolar, Praveen and Sharma-Shivappa, Ratna and Classen, John J. and Osborne, Jason A.}, year={2017}, month={Dec}, pages={2673–2680} }
 @article{lentz_classen_kolar_2017, title={THERMOCHEMICAL CONVERSION: A PROSPECTIVE SWINE MANURE SOLUTION FOR NORTH CAROLINA}, volume={60}, ISSN={["2151-0040"]}, DOI={10.13031/trans.12074}, number={3}, journal={TRANSACTIONS OF THE ASABE}, author={Lentz, Z. and Classen, J. and Kolar, P.}, year={2017}, pages={591–600} }
 @article{lu_yuan_cheng_rose_classen_simmons_2016, title={Modeling the Growth of Archaeon Halobacterium halobium Affected by Temperature and Light}, volume={181}, ISSN={0273-2289 1559-0291}, url={http://dx.doi.org/10.1007/s12010-016-2270-x}, DOI={10.1007/s12010-016-2270-x}, number={3}, journal={Applied Biochemistry and Biotechnology}, publisher={Springer Science and Business Media LLC}, author={Lu, Hao and Yuan, Wenqiao and Cheng, Jay and Rose, Robert B. and Classen, John J. and Simmons, Otto D.}, year={2016}, month={Oct}, pages={1080–1095} }
 @article{hu_wang-li_simmons_classen_osborne_2016, title={Size Distributions of Bioaerosols in an Egg Production Facility and Its Vicinity}, volume={33}, ISSN={["1557-9018"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84964715430&partnerID=MN8TOARS}, DOI={10.1089/ees.2015.0220}, number={4}, journal={ENVIRONMENTAL ENGINEERING SCIENCE}, author={Hu, Di and Wang-Li, Lingjuan and Simmons, Otto D. and Classen, John J. and Osborne, Jason A.}, year={2016}, month={Apr}, pages={215–223} }
 @article{fitzgerald_kolar_classen_boyette_das_2015, title={Swine Manure Char as an Adsorbent for Mitigation of p-Cresol}, volume={34}, ISSN={["1944-7450"]}, DOI={10.1002/ep.11972}, number={1}, journal={ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY}, author={Fitzgerald, Sterling and Kolar, Praveen and Classen, John and Boyette, Mike and Das, Lalitendu}, year={2015}, month={Jan}, pages={125–131} }
 @article{liang_classen_shah_sharma-shivappa_2014, title={Ammonia Fate and Transport Mechanisms in Broiler Litter}, volume={225}, ISSN={["1573-2932"]}, DOI={10.1007/s11270-013-1812-x}, number={1}, journal={WATER AIR AND SOIL POLLUTION}, author={Liang, Wei-zhen and Classen, John J. and Shah, Sanjay B. and Sharma-Shivappa, Ratna}, year={2014}, month={Jan} }
 @article{hu_wang-li_simmons_classen_osborne_byfield_2014, title={Bioaerosol concentrations and emissions from tunnel-ventilated high-rise layer houses in North Carolina}, volume={57}, number={3}, journal={Transactions of the ASABE}, author={Hu, D. and Wang-Li, L. and Simmons, O. D. and Classen, J. J. and Osborne, J. A. and Byfield, G. E.}, year={2014}, pages={915–925} }
 @article{liang_shah_classen_sharma-shivappa_2014, title={Drying temperature - duration impacts on moisture, carbon, and nitrogen losses from broiler litter}, volume={16}, number={4}, journal={Agricultural Engineering International: CIGR Journal}, author={Liang, Weizhen and Shah, Sanjay B. and Classen, John and Sharma-Shivappa, Ratna}, year={2014}, pages={16–23} }
 @article{classen_chandler_huie_osborne_2013, title={A centrifuge-based procedure for suspended solids measurements in lagoon sludge}, volume={56}, number={2}, journal={Transactions of the ASABE}, author={Classen, J. J. and Chandler, W. J. and Huie, R. S. and Osborne, J. A.}, year={2013}, pages={747–752} }
 @article{das_kolar_classen_osborne_2013, title={Adsorbents from pine wood via K2CO3-assisted low temperature carbonization for adsorption of p-cresol}, volume={45}, ISSN={["1872-633X"]}, DOI={10.1016/j.indcrop.2012.12.010}, journal={INDUSTRIAL CROPS AND PRODUCTS}, author={Das, Lalitendu and Kolar, Praveen and Classen, John J. and Osborne, Jason A.}, year={2013}, month={Feb}, pages={215–222} }
 @article{liang_shah_classen_sharma-shivappa_2013, title={Modeling Ammonium Adsorption on Broiler Litter and Cake}, volume={224}, ISSN={["0049-6979"]}, DOI={10.1007/s11270-012-1405-0}, number={2}, journal={WATER AIR AND SOIL POLLUTION}, author={Liang, Wei-zhen and Shah, Sanjay B. and Classen, John J. and Sharma-Shivappa, Ratna}, year={2013}, month={Feb} }
 @article{love_kolar_classen_das_2011, title={Adsorption of ammonia on ozonated activated carbon}, volume={54}, DOI={10.13031/2013.39834}, number={5}, journal={Transactions of the ASABE}, author={Love, C. D. and Kolar, P. and Classen, John and Das, L.}, year={2011}, pages={1931–1940} }
 @article{classen_rice_mcneill_simmons_2011, title={Design and evaluation of a discreet sampler for waste treatment lagoons}, volume={27}, DOI={10.13031/2013.40621}, number={6}, journal={Applied Engineering in Agriculture}, author={Classen, John and Rice, J. M. and McNeill, J. P. and Simmons, O. D.}, year={2011}, pages={1007–1014} }
 @article{guerdat_losordo_classen_osborne_delong_2011, title={Evaluating the effects of organic carbon on biological filtration performance in a large scale recirculating aquaculture system}, volume={44}, ISSN={["1873-5614"]}, DOI={10.1016/j.aquaeng.2010.10.002}, number={1}, journal={AQUACULTURAL ENGINEERING}, author={Guerdat, Todd C. and Losordo, Thomas M. and Classen, John J. and Osborne, Jason A. and DeLong, Dennis}, year={2011}, month={Jan}, pages={10–18} }
 @article{guerdat_losordo_classen_osborne_delong_2010, title={An evaluation of commercially available biological filters for recirculating aquaculture systems}, volume={42}, ISSN={["0144-8609"]}, DOI={10.1016/j.aquaeng.2009.10.002}, number={1}, journal={AQUACULTURAL ENGINEERING}, author={Guerdat, Todd C. and Losordo, Thomas M. and Classen, John J. and Osborne, Jason A. and DeLong, Dennis P.}, year={2010}, month={Jan}, pages={38–49} }
 @article{classen_rice_sherman_2007, title={The effects of vermicompost on field turnips and rainfall runoff}, volume={15}, DOI={10.1080/1065657x.2007.10702308}, number={1}, journal={Compost Science & Utilization}, author={Classen, John and Rice, J. M. and Sherman, R.}, year={2007}, pages={34–39} }
 @article{chaiprapat_cheng_classen_liehr_2005, title={Role of internal nutrient storage in duckweed growth for swine wastewater treatment}, volume={48}, DOI={10.13031/2013.20088}, number={6}, journal={Transactions of the ASAE}, author={Chaiprapat, S. and Cheng, J. J. and Classen, J. J. and Liehr, S. K.}, year={2005}, pages={2247–2258} }
 @article{chaiprapat_cheng_classen_ducoste_liehr_2003, title={Modeling Nitrogen Transport in Duckweed Pond for Secondary Treatment of Swine Wastewater}, volume={129}, ISSN={0733-9372 1943-7870}, url={http://dx.doi.org/10.1061/(asce)0733-9372(2003)129:8(731)}, DOI={10.1061/(asce)0733-9372(2003)129:8(731)}, number={8}, journal={Journal of Environmental Engineering}, publisher={American Society of Civil Engineers (ASCE)}, author={Chaiprapat, Sumate and Cheng, Jiayang and Classen, John J. and Ducoste, Joel J. and Liehr, Sarah K.}, year={2003}, month={Aug}, pages={731–739} }
 @article{cheng_bergmann_classen_stomp_howard_2002, title={Nutrient recovery from swine lagoon water by Spirodela punctata}, volume={81}, ISSN={["0960-8524"]}, DOI={10.1016/S0960-8524(01)00098-0}, number={1}, journal={BIORESOURCE TECHNOLOGY}, author={Cheng, JY and Bergmann, BA and Classen, JJ and Stomp, AM and Howard, JW}, year={2002}, month={Jan}, pages={81–85} }
 @article{cheng_landesman_bergmann_classen_howard_yamamoto_2002, title={Nutrient removal from swine lagoon liquid by Lemna minor 8627}, volume={45}, DOI={10.13031/2013.9953}, number={4}, journal={Transactions of the ASAE}, author={Cheng, J. and Landesman, L. and Bergmann, Ben and Classen, John and Howard, J. W. and Yamamoto, Y. T.}, year={2002}, pages={1003–1010} }
 @inproceedings{chaiprapat_cheng_classen_liehr_2002, title={Role of internal nutrient storage in duckweed for secondary swine wastewater treatment}, volume={2}, booktitle={Paper, 2002 ASAE annual international meeting/CIGR XVth world congress : Hyatt Regency Chicago, Chicago, Illinois, USA, July 28 - July 31, 2002}, author={Chaiprapat, S. and Cheng, J. and Classen, J. J. and Liehr, S. K.}, year={2002}, pages={4130} }
 @article{price_classen_payne_2001, title={Aspergillus niger absorbs copper and zinc from swine wastewater}, volume={77}, ISSN={["1873-2976"]}, DOI={10.1016/S0960-8524(00)00135-8}, number={1}, journal={BIORESOURCE TECHNOLOGY}, author={Price, MS and Classen, JJ and Payne, GA}, year={2001}, month={Mar}, pages={41–49} }
 @inproceedings{smith_cheng_classen_2001, title={Duckweed harvesting and mat control}, volume={1}, DOI={10.13031/2013.4128}, booktitle={ASAE 94th annual international meeting : 2001, an engineering odyssey : July 29-August 1, 2001, Sacramento, California}, author={Smith, R. A. and Cheng, J. and Classen, John}, year={2001}, pages={2277} }
 @inproceedings{chaiprapat_cheng_classen_liehr_2001, title={Modeling nitrogen transfer in duckweed covered pond for secondary treatment of swine wastewater}, ISBN={0966977017}, booktitle={Proceedings of the International Symposium Addressing Animal Production and Environmental Issues}, author={Chaiprapat, S. and Cheng, J. and Classen, J. J. and Liehr, S. K.}, year={2001} }
 @article{classen_engler_kenerley_whittaker_2000, title={A logistic model of subsurface fungal growth with application to bioremediation}, volume={35}, ISSN={["1093-4529"]}, DOI={10.1080/10934520009376982}, number={4}, journal={JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING}, author={Classen, JJ and Engler, CR and Kenerley, CM and Whittaker, AD}, year={2000}, pages={465–488} }
 @article{classen_young_bottcher_westerman_2000, title={Design and analysis of a pilot scale biofiltration system for odorous air}, volume={43}, DOI={10.13031/2013.2675}, number={1}, journal={Transactions of the ASAE}, author={Classen, John and Young, J. S. and Bottcher, R. W. and Westerman, P. W.}, year={2000}, pages={111–117} }
 @article{bergmann_cheng_classen_stomp_2000, title={In vitro selection of duckweed geographical isolates for potential use in swine lagoon effluent renovation}, volume={73}, ISSN={["1873-2976"]}, DOI={10.1016/S0960-8524(99)00137-6}, number={1}, journal={BIORESOURCE TECHNOLOGY}, author={Bergmann, BA and Cheng, J and Classen, J and Stomp, AM}, year={2000}, month={May}, pages={13–20} }
 @inproceedings{classen_cheng_bergmann_stomp_2000, title={Lemna gibba growth and nutrient uptake in response to different nutrient levels}, ISBN={1892769115}, booktitle={Animal, agricultural, and food processing wastes : proceedings of the Eighth International Symposium, October 9-11, 2000, Des Moines, Iowa}, author={Classen, J. J. and Cheng, J. and Bergmann, B. A. and Stomp, A. M.}, year={2000} }
 @article{jones_liehr_classen_robarge_2000, title={Mechanisms of dinitrogen gas formation in anaerobic lagoons}, volume={4}, DOI={10.1016/s1093-0191(00)00016-2}, number={2}, journal={Advances in Environmental Research}, author={Jones, M. L. and Liehr, S. K. and Classen, John and Robarge, W.}, year={2000}, pages={133–139} }
 @article{cheng_stomp_classen_barker_bergmann_2000, title={Nutrient removal from swine lagoon effluent by duckweed}, volume={43}, DOI={10.13031/2013.2701}, number={2}, journal={Transactions of the ASAE}, author={Cheng, J. and Stomp, A-M and Classen, John and Barker, J. C. and Bergmann, Ben}, year={2000}, pages={263–269} }
 @inproceedings{cheng_bergmann_classen_stomp_howard_2000, title={Nutrient removal from swine wastewater by duckweed - Spirodela punctata}, volume={1}, ISBN={1900222681}, booktitle={Industrial wastewater and envrironmental contaminants : proceedings of the 1st World Water Congress of the International Water Association, held in Paris, France, 3-7 July 2000}, author={Cheng, J. and Bergmann, B. A. and Classen, J. J. and Stomp, A. M. and Howard, J. W.}, year={2000} }
 @article{bicudo_classen_goldsmith_smith_1999, title={Effects of aeration cycles and hydraulic retention time on the sequencing batch treatment of flushed swine manure}, volume={3}, number={1}, journal={Advances in Environmental Research}, author={Bicudo, J. R. and Classen, J. J. and Goldsmith, C. D. and Smith, T.}, year={1999}, pages={U5–73} }
 @article{classen_liu_kenerley_whittaker_1996, title={Fractal analysis of subsurface growth of a genetically modified strain of Gliocladium virens and its parental strain}, volume={39}, DOI={10.13031/2013.27736}, number={6}, journal={Transactions of the ASAE}, author={Classen, John and Liu, W.-S. and Kenerley, C. M. and Whittaker, A. D.}, year={1996}, pages={2271} }