{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/71437"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/71437","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Longevity, Oxygen Toxicity and Radiation-Enhanced Resistance to Oxygen in Tribolium Confusum (Mortality, Hyperbaric, Radiation Factors, Induced Repair)","abstract":"Sublethal doses of ionizing radiation increase longevity in a variety of insects, suggesting that irradiation may retard the age-dependent decline of physiological functions. There have been no systematic investigations of the response of irradiated populations to stress, however.","abstract_html":"Sublethal doses of ionizing radiation increase longevity in a variety of insects, suggesting that irradiation may retard the age-dependent decline of physiological functions. There have been no systematic investigations of the response of irradiated populations to stress, however.","abstract_has_math":false,"creators":["Lee, Yong Jun"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physiology","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-16T06:45:48Z","date_published":"2014-12-16T06:45:48Z","updated_at":"2026-07-22T22:26:04Z","subjects":["Health Sciences, Radiology"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8511633"],"render_values":[{"text":"(UMI)AAI8511633","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/71437","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Lee, Yong Jun"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-16T06:45:48Z","10000-01-01","1985"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physiology"]},{"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":["Health Sciences, Radiology"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/71437","(UMI)AAI8511633"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Sublethal doses of ionizing radiation increase longevity in a variety of insects, suggesting that irradiation may retard the age-dependent decline of physiological functions. There have been no systematic investigations of the response of irradiated populations to stress, however.","I have demonstrated that resistance of adult flour beetles, Tribolium confusum, to oxygen poisoning declines progressively with age. I have examined oxygen resistance of irradiated populations of T. confusum as a function of age at irradiation, of time after irradiation, and of radiation dose and of dose-modifying factors.","Shortly after gamma-irradiation, flour beetles exhibited a decline in resistance to oxygen toxicity. Then, about two weeks after irradiation, the LD(,50) exposure time in pure oxygen was much greater than that of nonirradiated beetles, and this enhanced resistance persisted for about 6 months. The magnitude of the enhancement was a function of dose, decreased with increasing age at irradiation, and was modified by radiation factors. Sublethal irradiation under anoxia, at low dose rate, or with dose fractionation reduced the development of oxygen resistance to approximately the same degree that it reduced acute radiation lethality. Spontaneous mortality rates and oxygen resistance are affected to about the same extent by radiation dose and by age at exposure. Radiation-enhanced resistance to stress may be an important factor in the increased longevity of irradiated insects.","Made available in DSpace on 2014-12-16T06:45:48Z (GMT). No. of bitstreams: 1 8511633.pdf: 2288763 bytes, checksum: bdce10c8b40e1aee8f60bcae47f53d8a (MD5) Previous issue date: 1985","Embargo set by: Seth Robbins for item 71603 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","90 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985."]},{"key":"dc:title","label":"Title","values":["Longevity, Oxygen Toxicity and Radiation-Enhanced Resistance to Oxygen in Tribolium Confusum (Mortality, Hyperbaric, Radiation Factors, Induced Repair)"]}]}],"canonical_facts":{"dc:creator":["Lee, Yong Jun"],"dc:date":["2014-12-16T06:45:48Z","10000-01-01","1985"],"dc:description":["Sublethal doses of ionizing radiation increase longevity in a variety of insects, suggesting that irradiation may retard the age-dependent decline of physiological functions. There have been no systematic investigations of the response of irradiated populations to stress, however.","I have demonstrated that resistance of adult flour beetles, Tribolium confusum, to oxygen poisoning declines progressively with age. I have examined oxygen resistance of irradiated populations of T. confusum as a function of age at irradiation, of time after irradiation, and of radiation dose and of dose-modifying factors.","Shortly after gamma-irradiation, flour beetles exhibited a decline in resistance to oxygen toxicity. Then, about two weeks after irradiation, the LD(,50) exposure time in pure oxygen was much greater than that of nonirradiated beetles, and this enhanced resistance persisted for about 6 months. The magnitude of the enhancement was a function of dose, decreased with increasing age at irradiation, and was modified by radiation factors. Sublethal irradiation under anoxia, at low dose rate, or with dose fractionation reduced the development of oxygen resistance to approximately the same degree that it reduced acute radiation lethality. Spontaneous mortality rates and oxygen resistance are affected to about the same extent by radiation dose and by age at exposure. Radiation-enhanced resistance to stress may be an important factor in the increased longevity of irradiated insects.","Made available in DSpace on 2014-12-16T06:45:48Z (GMT). No. of bitstreams: 1 8511633.pdf: 2288763 bytes, checksum: bdce10c8b40e1aee8f60bcae47f53d8a (MD5) Previous issue date: 1985","Embargo set by: Seth Robbins for item 71603 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","90 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1985."],"dc:identifier":["http://hdl.handle.net/2142/71437","(UMI)AAI8511633"],"dc:subject":["Health Sciences, Radiology"],"dc:title":["Longevity, Oxygen Toxicity and Radiation-Enhanced Resistance to Oxygen in Tribolium Confusum (Mortality, Hyperbaric, Radiation Factors, Induced Repair)"],"dc:type":["text"],"thesis:degree_discipline":["Physiology"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:04Z"}