Index Catalog // ScholarsArchive@OSU

Thresholds of uncertainty : radiation and responsibility in the fallout controversy

Creator:: Jolly, J. Christopher
Abstract:: The public controversy over possible health hazards from radioactive fallout from atomic bomb testing began in 1954, shortly after a thermonuclear test by the United States spread fallout world wide. In the dissertation, I address two of the fundamental questions of the fallout controversy: Was there a threshold of radiation...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF J. Christopher Jolly for the

Novel secondary metabolites from a Madagascar collection of Lyngbya majuscula

Creator:: Nannini, Christopher J.
Abstract:: Marine organisms produce a variety of secondary metabolites for defense, communication, and reproduction. While these uses are essential for the organisms' survival, marine natural products have demonstrated their value to human society as well. Asian countries used algae for centuries to treat or prevent illnesses as wide-ranging as cough, gout,...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Christopher J. Nannini for the

A trace element study of plagioclase and clinopyroxene phenocrysts in historical lavas from Mt. Etna, Sicily, by laser ablation ICP-MS

Creator:: Russo, Christopher J.
Abstract:: Understanding magmatic processes occurring at depth in magmatic systems is fundamental for a more complete understanding of the variations sampled in lavas erupted from these systems on the Earth's surface. This thesis presents the results of detailed trace element analyses of plagioclase and clinopyroxene phenocrysts measured by laser ablation-inductively coupled...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Christopher J. Russo for the

North Umpqua end scrapers : allometry, discard, and residual utility

Creator:: Kelly, Christopher J.
Abstract:: End scrapers were an "all purpose" tool that have been associated with processes such as planing or shaving vegetal resources, shaping bone or antler implements, and to render hide into usable fabric. Examining end scrapers from four different archaeological sites on the North Umpqua River of southwestern Oregon provided interesting...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Christopher J. Kelly for the

Computer and internet usage in rural clubs : are members digitally divided?

Creator:: Cassell, Christopher J.
Abstract:: Lower rates of computer adoption and usage in rural areas has been called a "digital divide." This work explores the current state of connectivity within a rural town of the Pacific Northwest with a quantitative and qualitative overview of computer usage and access within civic and activity clubs, ranging from...
Resource Type:: Masters Thesis
Full Text:: activities. © Copyright by Christopher J. Cassell july 29, 2002 All Rights Reserved Computer and

Nitrogen isotopes in a global ocean biogeochemical model : constraints on the coupling between denitrification and nitrogen fixation

Creator:: Somes, Christopher J.
Abstract:: We present a new nitrogen isotope model incorporated into the three-dimensional ocean component of a global Earth System Climate Model designed for millennial timescale simulations. The model includes prognostic tracers for the stable nitrogen isotopes, ¹⁴N and ¹⁵N, in the nitrate (NO₃ˉ), phytoplankton, zooplankton, and detritus variables of the marine...
Resource Type:: Masters Thesis
Full Text:: ABSTRACT OF THE THESIS OF Christopher J. Somes for the degree of Master of Science in Oceanography

Stratigraphy, sedimentology, and eruptive dynamics of the 2-ka eruption of Misti Volcano, southern Peru

Creator:: Harpel, Christopher J.
Abstract:: The 2-ka eruption of Misti volcano produced voluminous flowage deposits and a wide-spread tephra-fall deposit. The flowage deposits form large terraces within channels draining the south side of the volcano. All the channels drain into the city of Arequipa. Arequipa's city center is ~16 km from the summit of the...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Christopher J. Harpel for the degree of Doctor of Philosophy in Geology presented on

A nano-power wake-up circuit for RF energy harvesting wireless sensor networks

Creator:: Lindsley, Christopher J.
Abstract:: A fully integrated CMOS latched comparator is presented for use as a wake-up circuit that is attached to an RF energy harvester in a battery free wireless sensor network. The system consumes less than 36nA static current at 20°C and dissipates 2pJ of energy per conversion. The comparator comprises of...
Resource Type:: Masters Thesis

Detection of actinides via nuclear isomer de-excitation

Creator:: Francy, Christopher J.
Abstract:: The detection of illicit weapons-grade nuclear material is a significant technical challenge receiving a great deal of attention in the nuclear community. A proposed solution is to actively bombard the material under investigation with neutrons, populating nuclear isomers in any potential fissile material. These isomers decay quickly, releasing gamma rays...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Christopher J. Francy for

Mantle melting and heterogeneity along mid-ocean ridges : insight from basalt geochemistry along axial depth and morphologic gradients for intermediate spreading rate systems

Creator:: Russo, Christopher J.
Abstract:: This investigation focuses on gaining a better understanding of the complex relationship between melt generation, source variability and mid-ocean ridge morphology. The approach adopted here uses a variety of geochemical techniques to evaluate the ability of 'global' models to predict regional scale geochemical variability associated with axial depth and axial...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Chris J. Russo for the degree of Doctor of Philosophy in Oceanography presented on

ScholarsArchive@OSU

Thresholds of uncertainty : radiation and responsibility in the fallout controversy

Novel secondary metabolites from a Madagascar collection of Lyngbya majuscula

A trace element study of plagioclase and clinopyroxene phenocrysts in historical lavas from Mt. Etna, Sicily, by laser ablation ICP-MS

North Umpqua end scrapers : allometry, discard, and residual utility

Computer and internet usage in rural clubs : are members digitally divided?

Nitrogen isotopes in a global ocean biogeochemical model : constraints on the coupling between denitrification and nitrogen fixation

Stratigraphy, sedimentology, and eruptive dynamics of the 2-ka eruption of Misti Volcano, southern Peru

A nano-power wake-up circuit for RF energy harvesting wireless sensor networks

Detection of actinides via nuclear isomer de-excitation

Mantle melting and heterogeneity along mid-ocean ridges : insight from basalt geochemistry along axial depth and morphologic gradients for intermediate spreading rate systems

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