{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/86063"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/86063","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Analysis and Control of Rate and Uniformity for Granular Fertilizer Application Systems","abstract":"A comparison was made between the spinning tube method discussed in this paper and a rheometer method. In the latter method, the particles are fixed in placeholders, and a spinning disc is kept in contact with them under a controlled normal force. The measured torque on the disc is then a measure for the friction coefficient. Data for the same fertilizer materials Ammonium Nitrate and Potassium Chloride indicated that the rheometer is not a good instrument to obtain friction coefficients with practical value, whereas the data from the spinning tube device is consistent with measured spread patterns. (Abstract shortened by UMI.).","abstract_html":"A comparison was made between the spinning tube method discussed in this paper and a rheometer method. In the latter method, the particles are fixed in placeholders, and a spinning disc is kept in contact with them under a controlled normal force. The measured torque on the disc is then a measure for the friction coefficient. Data for the same fertilizer materials Ammonium Nitrate and Potassium Chloride indicated that the rheometer is not a good instrument to obtain friction coefficients with practical value, whereas the data from the spinning tube device is consistent with measured spread patterns. (Abstract shortened by UMI.).","abstract_has_math":false,"creators":["Kweon, Giyoung"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Agricultural Engineering","degree_department":null,"school":null,"contributors":["Grift, Tony E."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-28T14:53:49Z","date_published":"2015-09-28T14:53:49Z","updated_at":"2026-07-22T22:26:26Z","subjects":["Engineering, Agricultural"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3223635"],"render_values":[{"text":"(MiAaPQ)AAI3223635","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/86063","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Grift, Tony E."]},{"key":"dc:creator","label":"Author","values":["Kweon, Giyoung"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-28T14:53:49Z","10000-01-01","2006"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Agricultural Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Agricultural"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/86063","(MiAaPQ)AAI3223635"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["A comparison was made between the spinning tube method discussed in this paper and a rheometer method. In the latter method, the particles are fixed in placeholders, and a spinning disc is kept in contact with them under a controlled normal force. The measured torque on the disc is then a measure for the friction coefficient. Data for the same fertilizer materials Ammonium Nitrate and Potassium Chloride indicated that the rheometer is not a good instrument to obtain friction coefficients with practical value, whereas the data from the spinning tube device is consistent with measured spread patterns. (Abstract shortened by UMI.).","Made available in DSpace on 2015-09-28T14:53:49Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3223635.pdf: 3189409 bytes, checksum: f0f8d904783a014c5141f9b6cd653e35 (MD5) Previous issue date: 2006","Embargo set by: Seth Robbins for item 87344 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","129 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006."]},{"key":"dc:title","label":"Title","values":["Analysis and Control of Rate and Uniformity for Granular Fertilizer Application Systems"]}]}],"canonical_facts":{"dc:contributor":["Grift, Tony E."],"dc:creator":["Kweon, Giyoung"],"dc:date":["2015-09-28T14:53:49Z","10000-01-01","2006"],"dc:description":["A comparison was made between the spinning tube method discussed in this paper and a rheometer method. In the latter method, the particles are fixed in placeholders, and a spinning disc is kept in contact with them under a controlled normal force. The measured torque on the disc is then a measure for the friction coefficient. Data for the same fertilizer materials Ammonium Nitrate and Potassium Chloride indicated that the rheometer is not a good instrument to obtain friction coefficients with practical value, whereas the data from the spinning tube device is consistent with measured spread patterns. (Abstract shortened by UMI.).","Made available in DSpace on 2015-09-28T14:53:49Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 3223635.pdf: 3189409 bytes, checksum: f0f8d904783a014c5141f9b6cd653e35 (MD5) Previous issue date: 2006","Embargo set by: Seth Robbins for item 87344 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","129 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006."],"dc:identifier":["http://hdl.handle.net/2142/86063","(MiAaPQ)AAI3223635"],"dc:language":["eng"],"dc:subject":["Engineering, Agricultural"],"dc:title":["Analysis and Control of Rate and Uniformity for Granular Fertilizer Application Systems"],"dc:type":["text"],"thesis:degree_discipline":["Agricultural Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:26Z"}