Index Catalog // ScholarsArchive@OSU

New bioactive natural products from marine algae and cyanobacteria

Creator:: Sabry, Omar Mohamed
Abstract:: This thesis is an account of investigation on the natural products deriving from various marine algae and has resulted in the discovery of eleven novel bioactive metabolites. Isolation and characterization of these new molecules were carried out using different chromatographic techniques and by analyses of different spectroscopic data, respectively. Using...
Resource Type:: Dissertation
Full Text:: channel blocking activity (EC = 0.3 and 0.9 pg/mi, respectively). Stypoaldehyde, as well as the previously

Understanding large resurgent calderas and associated magma systems : the Pastos Grandes Caldera Complex, southwest Bolivia

Creator:: Kaiser, Jason Frederick, 1985-
Abstract:: The Pastos Grandes Caldera Complex (PGCC) in southwest Bolivia has produced two large-volume (≥800 km³ DRE) dacite ignimbrites from a nested caldera source over a period of 5.5 Myr. In addition to the large-volume ignimbrites, a small-volume ignimbrite shield and post-climactic lavas define this composite system. Based on detailed field...
Resource Type:: Dissertation
Full Text:: , 17(12),1102-1106. 11 de Silva, S., Zandt, G., Trumbull, R., Viramonte, J. G., Salas, G

Paleoclimate, paleoventilation, and paleomagnetism as recorded in a 17kyr marine sediment record from the SE Alaska margin

Creator:: Davies, Maureen Helen
Abstract:: The deglacial behavior of the sub-Arctic North Pacific is poorly constrained, with many published records suffering from limited age control due to extensive post- depositional biogenic carbonate dissolution. Potential alternative dating methods could include the correlation of stable-isotopic and/or paleomagnetic secular variation records to an independently-dated regional template, however no...
Resource Type:: Dissertation

On the Manifestation of Deformation and Evolution of Two Cenozoic Orogens

Creator:: Lamont, Ellen A.
Abstract:: The word orogenesis is derived from the Greek words oros meaning mountains and genesis meaning creation and refers to the study of the complex processes involved in the growth and evolution of mountain ranges (orogens). Orogens develop where crustal deformation builds topography and forms landscapes. This dissertation explores the role...
Resource Type:: Dissertation

Investigating Timescales of Resurgence at Large Calderas: Post-74 ka Activity at Toba Caldera, Sumatra, Indonesia

Creator:: Mucek, Adonara E.
Abstract:: The Toba Caldera Complex is the youngest resurgent caldera in the last 100 kyrs, formed from four overlapping eruptions starting 1.2 Myrs ago. The last caldera-forming eruption, the Youngest Toba Tuff eruption, occurred ~74 kyrs ago, emitting 2800 km3 of ash and pumice into the atmosphere and forming the caldera...
Resource Type:: Dissertation

Generation and manipulation of THz waves

Creator:: Amer, Naaman
Abstract:: In this thesis I studied several THz components that can be used for potential THz technology. THz waves were generated in nonlinear medium via optical rectification of femtosecond optical pulses. Utilizing the phase matching condition between the optical and THz waves in a ZnTe crystal, single-cycle broad-band THz pulses were...
Resource Type:: Dissertation
Full Text:: (a) TH z el ec tri c fie ld (a .u .) Time domain (ps) 0 1 2 3 (b) p ow er s pe ct ru

An investigation of the utility of Landsat 2 MSS data to the fire-danger rating area, and forest fuel analysis within Crater Lake National Park, Oregon

Creator:: Rabii, Hassan Alizadeh
Resource Type:: Dissertation

Hydrogen isotopic composition of C₃₇ alkenones and the ecology and physiology of coccolithophores

Creator:: Wolhowe, Matthew D.
Abstract:: A three-part study was conducted into the impact of physiological and ecological variables on the net isotopic fractionation of hydrogen, α[subscript K₃₇], expressed in C₃₇ alkenones. First, alkenone-producer production, abundance, and export were characterized in the summertime Gulf of California and Eastern Tropical North Pacific using compound-specific, labeled in situ...
Resource Type:: Dissertation

Using Narratives to Document Environmental Identities and Connection to Nature : A Case Study of Aquarium Staff and Volunteers

Creator:: Mileham, Michelle A.
Abstract:: Zoos and aquariums are among the best informal education avenues for individuals to further develop conservation beliefs and values. Research documented the presence of conservation messages at aquariums, that visitors expect such messages, and staff and volunteers at conservation organizations increase their conservation-related knowledge and behaviors. This research often focuses...
Resource Type:: Dissertation

An Examination of Gender and Racial/Ethnic Social Identities in Marine, Aquatic, and Fisheries Sciences

Creator:: King, Brittany D.
Abstract:: Despite growing efforts to recruit individuals from diverse backgrounds, natural resources fields, including marine aquatic and fisheries science, do not reflect the diversity of the United States. This dissertation utilized three studies to explore underrepresentation in marine, aquatic, and fisheries sciences by examining career influences, experiences, and perspectives at different...
Resource Type:: Dissertation
Full Text:: ). Without inclusion, diversity initiatives may not be enough. Science, 357(6356), 1101– 1102. https

ScholarsArchive@OSU

New bioactive natural products from marine algae and cyanobacteria

Understanding large resurgent calderas and associated magma systems : the Pastos Grandes Caldera Complex, southwest Bolivia

Paleoclimate, paleoventilation, and paleomagnetism as recorded in a 17kyr marine sediment record from the SE Alaska margin

On the Manifestation of Deformation and Evolution of Two Cenozoic Orogens

Investigating Timescales of Resurgence at Large Calderas: Post-74 ka Activity at Toba Caldera, Sumatra, Indonesia

Generation and manipulation of THz waves

An investigation of the utility of Landsat 2 MSS data to the fire-danger rating area, and forest fuel analysis within Crater Lake National Park, Oregon

Hydrogen isotopic composition of C₃₇ alkenones and the ecology and physiology of coccolithophores

Using Narratives to Document Environmental Identities and Connection to Nature : A Case Study of Aquarium Staff and Volunteers

An Examination of Gender and Racial/Ethnic Social Identities in Marine, Aquatic, and Fisheries Sciences

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search