Zobrazeno 1 - 10
of 231
pro vyhledávání: '"David B, Parker"'
Autor:
Carolina B. Brandani, Myeongseong Lee, Brent W. Auvermann, David B. Parker, Kenneth D. Casey, Erik T. Crosman, Vinícius N. Gouvêa, Matthew R. Beck, K. Jack Bush, Jacek A. Koziel, Bryan Shaw, David Brauer
Publikováno v:
Atmosphere, Vol 14, Iss 10, p 1469 (2023)
Northeast Colorado’s livestock operations have been identified as a major contributor to reactive nitrogen deposition in the Rocky Mountains National Park (RMNP). We present a review on the state of knowledge concerning the emission, transport, dep
Externí odkaz:
https://doaj.org/article/eb412a73abe5444db26ba8d404e5102c
Autor:
Baitong Chen, Jacek A. Koziel, Chumki Banik, Hantian Ma, Myeongseong Lee, Jisoo Wi, Zhanibek Meiirkhanuly, Samuel C. O'Brien, Peiyang Li, Daniel S. Andersen, Andrzej Białowiec, David B. Parker
Publikováno v:
Frontiers in Environmental Science, Vol 8 (2020)
Odorous gas emissions from swine production have been a concern for neighbors and communities near livestock farms. Manure storage is one of the main sources of gaseous emissions. Manure additive products are marketed as a simple solution to this env
Externí odkaz:
https://doaj.org/article/cae18389081647fa84997d06452bc7b1
Autor:
David B. Parker, Qolamreza R. Razlighi
Publikováno v:
Frontiers in Neuroscience, Vol 13 (2019)
Due to the nature of fMRI acquisition protocols, slices cannot be acquired simultaneously, and as a result, are temporally misaligned from each other. To correct from this misalignment, preprocessing pipelines often incorporate slice timing correctio
Externí odkaz:
https://doaj.org/article/10ab0a174f2245758ae281ad119daf75
Autor:
Mukesh Mehata, Erin Cortus, Suresh Niraula, Mindy J. Spiehs, Joseph Darrington, Amitava Chatterjee, Shafiqur Rahman, David B. Parker
Publikováno v:
International Journal of Agronomy, Vol 2019 (2019)
Manure and inorganic fertilizer help to meet crop nitrogen demand by supplementing soil nitrogen (N). However, excessive N losses reduce soil fertility and crop yield and can impair water and air quality. The objectives of the research were to compar
Externí odkaz:
https://doaj.org/article/46045793674f4abfb64931837bfabed2
Publikováno v:
Journal of the ASABE. 65:123-133
HighlightsThe largest contributors to odor activity values (OAV) were heptanoic acid (23.5%), hexanoic acid (17.6%), indole (14.7%), and dimethyl disulfide (DMDS) (9.50%).Measurements of volatile organic compounds (VOC) were greater from plots where
Publikováno v:
Journal of the ASABE. 65:113-121
HighlightsHydraulic fracking wastewater is evaluated as a possible alternative to freshwater in combination with beef cattle manure for bio-methane generation by anaerobic digestion (AD).Optimum conditions for AD with fracking wastewater remain unkno
Autor:
Heidi M. Waldrip, David B. Parker, Sierra Miller, Daniel N. Miller, Kenneth D. Casey, Richard W. Todd, Byeng R. Min, Mindy J. Spiehs, Bryan Woodbury
Publikováno v:
Atmosphere, Vol 11, Iss 10, p 1056 (2020)
Beef feedyards produce nitrous oxide (N2O), a potent greenhouse gas. Limited research has evaluated the processes that produce feedyard N2O, and how rainfall and temperature impact N2O losses. Manure in feedyard pens develops into a complex ecosystem
Externí odkaz:
https://doaj.org/article/9a304e729bb542e88016a84b90654048
Autor:
Baitong Chen, Jacek A. Koziel, Chumki Banik, Hantian Ma, Myeongseong Lee, Jisoo Wi, Zhanibek Meiirkhanuly, Daniel S. Andersen, Andrzej Białowiec, David B. Parker
Publikováno v:
Data, Vol 5, Iss 2, p 54 (2020)
Odor and gaseous emissions from the swine industry are of concern for the wellbeing of humans and livestock. Additives applied to the swine manure surface are popular, marketed products to solve this problem and relatively inexpensive and easy for fa
Externí odkaz:
https://doaj.org/article/c61f996dd50b4c1b98ea85b146ecf7de
Publikováno v:
Transactions of the ASABE. 64:1211-1225
HighlightsNitrous oxide and methane emissions were measured from a commercial beef feedyard following large rainfall events.Nitrous oxide emissions dropped below detection levels for ten days following a 77 mm rainfall event.Daily N2O and CH4 emissio
Autor:
Mindy J. Spiehs, Bryan L. Woodbury, Kenneth D. Casey, David B. Parker, Heidi Maria Waldrip, William M. Willis, Byeng R. Min, Terra N. Campbell, Beverly Meyer
Publikováno v:
Transactions of the ASABE. 64:1781-1794
HighlightsOpen-lot beef cattle feedyards are a source of greenhouse gas emissions.Pen surface methane emissions were quantified during the cool and warm seasons.Methane was generated in the lower anaerobic layers of the manure pack.Methane emissions