{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/25345"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/25345","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Thermodynamic and kinetic studies of purple membrane from halobacterium halobium","abstract":"This thesis is a report on three separate but closely related experiments with the energy tranducing purple membrane from Halobacterium halobium. In the first experiment, we used flash photolysis to measure the effects of solvent viscosity on the kinetics of the purple membrane photocycle, and we analyzed the data in terms of a modified Kramers' theory. In the second experiment, we determined the purple membrane's apparent density, thermal expansivity, isothermal and adiabatic compressibilities, and specific heats at constant pressure and constant volume. In the final experiment, we studied the effects of high pressure on the kinetics of the photocycle. We found that all of the distinct processes in the photocycle are retarded by pressure. The results of the pressure and viscosity studies are very highly correlated. We interpret this to mean that the primary effect of pressure on the photocycle is via its increase of the intrinsic viscosity of the membrane.","abstract_html":"This thesis is a report on three separate but closely related experiments with the energy tranducing purple membrane from Halobacterium halobium. In the first experiment, we used flash photolysis to measure the effects of solvent viscosity on the kinetics of the purple membrane photocycle, and we analyzed the data in terms of a modified Kramers' theory. In the second experiment, we determined the purple membrane's apparent density, thermal expansivity, isothermal and adiabatic compressibilities, and specific heats at constant pressure and constant volume. In the final experiment, we studied the effects of high pressure on the kinetics of the photocycle. We found that all of the distinct processes in the photocycle are retarded by pressure. The results of the pressure and viscosity studies are very highly correlated. We interpret this to mean that the primary effect of pressure on the photocycle is via its increase of the intrinsic viscosity of the membrane.","abstract_has_math":false,"creators":["Marque, Jeffrey Joshua"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Eisenstein, Laura"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-06-07T18:20:21Z","date_published":"2011-06-07T18:20:21Z","updated_at":"2026-07-22T22:25:24Z","subjects":["thermodynamics","kinetics","purple membrane","halobacterium halobium","flash photolysis","solvent viscosity"],"languages":["eng"],"rights":["1984 Jeffrey Joshua Marque"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["840250"],"render_values":[{"text":"840250","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/25345","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Eisenstein, Laura"]},{"key":"dc:creator","label":"Author","values":["Marque, Jeffrey Joshua"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-06-07T18:20:21Z","10000-01-01","1984"]},{"key":"dc:type","label":"Dc Type","values":["text","Dissertation / Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["thermodynamics","kinetics","purple membrane","halobacterium halobium","flash photolysis","solvent viscosity"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["1984 Jeffrey Joshua Marque"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["840250","http://hdl.handle.net/2142/25345"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["This thesis is a report on three separate but closely related experiments with the energy tranducing purple membrane from Halobacterium halobium. In the first experiment, we used flash photolysis to measure the effects of solvent viscosity on the kinetics of the purple membrane photocycle, and we analyzed the data in terms of a modified Kramers' theory. In the second experiment, we determined the purple membrane's apparent density, thermal expansivity, isothermal and adiabatic compressibilities, and specific heats at constant pressure and constant volume. In the final experiment, we studied the effects of high pressure on the kinetics of the photocycle. We found that all of the distinct processes in the photocycle are retarded by pressure. The results of the pressure and viscosity studies are very highly correlated. We interpret this to mean that the primary effect of pressure on the photocycle is via its increase of the intrinsic viscosity of the membrane.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-07T18:20:21Z No. of bitstreams: 1 1984_marque.pdf: 3681336 bytes, checksum: 2a50eacc056afb217cff463478c452ff (MD5)","Made available in DSpace on 2011-06-07T18:20:21Z (GMT). No. of bitstreams: 1 1984_marque.pdf: 3681336 bytes, checksum: 2a50eacc056afb217cff463478c452ff (MD5) Previous issue date: 1984","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-06-07T18:20:21Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:14:06-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis","Thesis","U of I Only"]},{"key":"dc:title","label":"Title","values":["Thermodynamic and kinetic studies of purple membrane from halobacterium halobium"]}]}],"canonical_facts":{"dc:contributor":["Eisenstein, Laura"],"dc:creator":["Marque, Jeffrey Joshua"],"dc:date":["2011-06-07T18:20:21Z","10000-01-01","1984"],"dc:description":["This thesis is a report on three separate but closely related experiments with the energy tranducing purple membrane from Halobacterium halobium. In the first experiment, we used flash photolysis to measure the effects of solvent viscosity on the kinetics of the purple membrane photocycle, and we analyzed the data in terms of a modified Kramers' theory. In the second experiment, we determined the purple membrane's apparent density, thermal expansivity, isothermal and adiabatic compressibilities, and specific heats at constant pressure and constant volume. In the final experiment, we studied the effects of high pressure on the kinetics of the photocycle. We found that all of the distinct processes in the photocycle are retarded by pressure. The results of the pressure and viscosity studies are very highly correlated. We interpret this to mean that the primary effect of pressure on the photocycle is via its increase of the intrinsic viscosity of the membrane.","Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-07T18:20:21Z No. of bitstreams: 1 1984_marque.pdf: 3681336 bytes, checksum: 2a50eacc056afb217cff463478c452ff (MD5)","Made available in DSpace on 2011-06-07T18:20:21Z (GMT). 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