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Reframing Climate Change As A Public Health Issue: An Exploratory Study Of Public Reactions, Edward W. Maibach, Matthew Nisbet, Paula Baldwin, Karen Akerlof, Guoqing Diao 2010 George Mason University

Reframing Climate Change As A Public Health Issue: An Exploratory Study Of Public Reactions, Edward W. Maibach, Matthew Nisbet, Paula Baldwin, Karen Akerlof, Guoqing Diao

Faculty Research Publications (All Departments)

Background: Climate change is taking a toll on human health, and some leaders in the public health community have urged their colleagues to give voice to its health implications. Previous research has shown that Americans are only dimly aware of the health implications of climate change, yet the literature on issue framing suggests that providing a novel frame - such as human health - may be potentially useful in enhancing public engagement. We conducted an exploratory study in the United States of people's reactions to a public health-framed short essay on climate change. Methods: U.S. adult respondents (n = 70), stratified ...


Augmented Reality Navigation Interfaces Improve Human Performance In End-Effector Controlled Telerobotics, Keshav Chintamani 2010 Wayne State University

Augmented Reality Navigation Interfaces Improve Human Performance In End-Effector Controlled Telerobotics, Keshav Chintamani

Wayne State University Dissertations

On the International Space Station (ISS) and space shuttles, the National Aeronautics and Space Administration (NASA) has used robotic manipulators extensively to perform payload handling and maintenance tasks. Teleoperating robots require expert skills and optimal performance is crucial to mission completion and crew safety. Degradation in performance is observed when manual control is mediated through remote camera views, resulting in poor end-effector navigation quality and extended task completion times. This thesis explores the application of three-dimensional augmented reality (AR) interfaces specifically designed to improve human performance during end-effector controlled teleoperations. A modular telerobotic test bed was developed for this purpose ...


Trace Metal Biogeochemistry In The Western North Pacific, Peter Lynn Morton 2010 Old Dominion University

Trace Metal Biogeochemistry In The Western North Pacific, Peter Lynn Morton

OEAS Theses and Dissertations

Dissolved and suspended particulate samples collected during the Intergovernmental Oceanographic Commission 2002 Contaminant Baseline Survey were analyzed to determine the surface and vertical distributions of Cd, Co, Cu, Mn, Ni Zn and Pb across the western and central North Pacific.

Dissolved trace metal concentrations were measured using a novel isotope dilution-ICP-MS method after extraction over an 8-hydroxyquinoline resin column and validated through the use of the SAFe consensus reference materials. Filtered suspended particulate matter was digested using an HCl/HNO3/HF mixture and analyzed by HR-ICP-MS to obtain total particulate concentrations for the trace metals and other tracer elements such ...


Paleolimnological Reconstruction Of Hydrologic Change In The Slave River And Great Slave Lake During The Past Millennium, Matthew Ennis 2010 Wilfrid Laurier University

Paleolimnological Reconstruction Of Hydrologic Change In The Slave River And Great Slave Lake During The Past Millennium, Matthew Ennis

Theses and Dissertations (Comprehensive)

The Slave River Delta (SRD), NWT, represents a pivotal node in the upper Mackenzie Basin watershed and is a productive northern wetland landscape with a rich natural and cultural heritage. Concerns over environmental consequences of natural and anthropogenic-driven decline in river discharge as well as climate variability have prompted hydroecological sstudies to improve understanding of how this ecosystem functions over time and space. However, long-term natural hydrological variability of the Slave River system is not well documented and needs to be further developed. In order to provide a temperal context for understanding and evaluating the impacts of climate variability and ...


Urban Speleology Applied To Groundwater And Geo-Engineering Studies: Underground Topographic Surveying Of The Ancient Arca D’Água Galleries Catchworks (Porto, Nw Portugal), H. I. Chaminé, M. J. Afonso, P. M. Robalo, P. Rodrigues, C. Cortez, F. A. Monteiro Santos, J. P. Plancha, P. E. Fonseca, A. Gomes, N. F. Devy-Vareta, J. M. Marques, M. E. Lopes, G. Fontes, A. Pires, F. Rocha 2010 Instituto Superior de Engenharia do Porto

Urban Speleology Applied To Groundwater And Geo-Engineering Studies: Underground Topographic Surveying Of The Ancient Arca D’Água Galleries Catchworks (Porto, Nw Portugal), H. I. Chaminé, M. J. Afonso, P. M. Robalo, P. Rodrigues, C. Cortez, F. A. Monteiro Santos, J. P. Plancha, P. E. Fonseca, A. Gomes, N. F. Devy-Vareta, J. M. Marques, M. E. Lopes, G. Fontes, A. Pires, F. Rocha

International Journal of Speleology

The Porto settlement (Northwest Portugal, Iberian Peninsula) was originally built in the twelfth century and has been developed on granitic hill slopes of the Douro riverside, being one of the oldest cities in Europe. In the urban area of Porto, the second most important city of the Portuguese mainland, there is a population of about 216,000 inhabitants. This study highlights the importance of urban speleological mapping applied to groundwater and geo-engineering studies. All the water that flows from the so-called Paranhos or Arca D’Água springs is captured by catchwork galleries and their utilization date back around 1120 AD ...


Pathogenic And Opportunistic Microorganisms In Caves, Valme Jurado, Leonila Laiz, Veronica Rodriguez-Nava, Patrick Boiron, Bernardo Hermosin, Sergio Sanchez-Moral, Cesareo Saiz-Jimenez 2010 Université de Lyon

Pathogenic And Opportunistic Microorganisms In Caves, Valme Jurado, Leonila Laiz, Veronica Rodriguez-Nava, Patrick Boiron, Bernardo Hermosin, Sergio Sanchez-Moral, Cesareo Saiz-Jimenez

International Journal of Speleology

With today’s leisure tourism, the frequency of visits to many caves makes it necessary to know about possible potentially pathogenic microorganisms in caves, determine their reservoirs, and inform the public about the consequences of such visits. Our data reveal that caves could be a potential danger to visitors because of the presence of opportunistic microorganisms, whose existence and possible development in humans is currently unknown.


Candoluminescence Of Cave Gypsum, John R. Sweet, John W. Hess, William B. White 2010 Geological Society of America

Candoluminescence Of Cave Gypsum, John R. Sweet, John W. Hess, William B. White

International Journal of Speleology

A selection of gypsum specimens from a variety of caves as well as CaSO4 synthesized in the laboratory emit both a green and yellow candoluminescence when excited by a hydrogen diffusion flame. The green emission is attributed to dehydration of gypsum to bassanite and the yellow emission appears upon further dehydration to anhydrite. The source of the luminescence is ascribed to minor concentrations of Mn2+ in the gypsum.


Teaching Resources In Speleology And Karst: A Valuable Educational Tool, Jo De Waele 2010 University of Bologna

Teaching Resources In Speleology And Karst: A Valuable Educational Tool, Jo De Waele

International Journal of Speleology

There is a growing need in the speleological community of tools that make teaching of speleology and karst much easier. Despite the existence of a wide range of major academic textbooks, often the caver community has a difficult access to such material. Therefore, to fill this gap, the Italian Speleological Society, under the umbrella of the Union International de Spéléologie, has prepared a set of lectures, in a presentation format, on several topics including geology, physics, chemistry, hydrogeology, mineralogy, palaeontology, biology, microbiology, history, archaeology, artificial caves, documentation, etc. These lectures constitute the “Teaching Resources in Speleology and Karst”, available online ...


Uranium-Series Dating Of Gypsum Speleothems: Methodology And Examples, Laura Sanna, Francisco Saez, Siri Simonsen, Silviu Constantin, José-Maria Calaforra, Paolo Forti, Stein-Erik Lauritzen 2010 Bergen University

Uranium-Series Dating Of Gypsum Speleothems: Methodology And Examples, Laura Sanna, Francisco Saez, Siri Simonsen, Silviu Constantin, José-Maria Calaforra, Paolo Forti, Stein-Erik Lauritzen

International Journal of Speleology

The analytical problems of dating gypsum speleothems with the U-series technique are reviewed. Gypsum speleothems are, in general, very low in U content, challenging the limits of detection methods. Various approaches to dissolving gypsum and isolation of actinides from the matrix include ion-pairing dissolution with magnesium salts and using nitric acid. The most precise dating technique is Thermal Ionization Mass Spectrometry (TIMS), combined with Fe(OH)3 scavenging and anionic exchange chromatography. Less satisfactory, but much quicker, is direct retention of actinides from HNO3 by means of TRU resin and MC-ICP-MS detection. We have tested these methods on gypsum ...


Spatial Distribution Of Soda Straws Growth Rates Of The Coufin Cave (Vercors, France), Yves Perrette, Stéphane Jaillet 2010 Edytem, Université de Savoie - CNRS

Spatial Distribution Of Soda Straws Growth Rates Of The Coufin Cave (Vercors, France), Yves Perrette, Stéphane Jaillet

International Journal of Speleology

The Choranche Cave system (Vercors, France) is an excellent locality for measuring the growth rates of large numbers soda straws. This is especially the case for the Coufin Cave, as enlargement of the cave entrance in 1875 led to a change in stalactite color from brown to white, thus providing a reliable chronomarker. The date of this brown-to-white calcite transition has been confirmed by lamina counting. We measured and georeferenced the growth-lengths of 306 soda straws in a 1m2 area of the roof of the Coufin Cave entrance chamber. Because of the very slow and sometimes inexistent water feeding ...


Karst Geology And Cave Fauna Of Austria: A Concise Review, Erhard Christian, Christoph Spötl 2010 University of Natural Resources and Applied Life Sciences, Vienna

Karst Geology And Cave Fauna Of Austria: A Concise Review, Erhard Christian, Christoph Spötl

International Journal of Speleology

The state of cave research in Austria is outlined from the geological and zoological perspective. Geologic sections include the setting of karst regions, tectonic and palaeoclimatic control on karst, modern cave environments, and karst hydrology. A chapter on the development of Austrian biospeleology in the 20th century is followed by a survey of terrestrial underground habitats, biogeographic remarks, and an annotated selection of subterranean invertebrates.


Modern C, O, And H Isotope Composition Of Speleothem And Dripwater From Modrič Cave, Eastern Adriatic Coast (Croatia), Maša Surić, Zvjezdana Roller-Lutz, Magda Mandić, Ines Krajcar Bronić, Mladen Juračić 2010 University of Zadar

Modern C, O, And H Isotope Composition Of Speleothem And Dripwater From Modrič Cave, Eastern Adriatic Coast (Croatia), Maša Surić, Zvjezdana Roller-Lutz, Magda Mandić, Ines Krajcar Bronić, Mladen Juračić

International Journal of Speleology

Modrič Cave is a shallow horizontal cave situated in the middle of the eastern Adriatic coast (Croatia). The cave entrance is located 120 m from the coast at an altitude of 32 m above sea level, and due to its position on the SW slope of the Dinaridic mountain range, a Mediterranean climatic influence is dominant. Due to the stable environmental conditions [(15.6 ± 0.1) °C] Modrič Cave was recognized as a potential site for detailed palaeoclimatic studies. Isotope analyses of modern carbonate speleothems, rain and dripwater were conducted in order to evaluate the isotopic equilibrium conditions. The δ18O ...


Age Frequency Distribution And Revised Stable Isotope Curves For New Zealand Speleothems: Palaeoclimatic Implications, Paul W. Williams, Helen L. Neil, Jian-Xin Zhao 2010 University of Auckland

Age Frequency Distribution And Revised Stable Isotope Curves For New Zealand Speleothems: Palaeoclimatic Implications, Paul W. Williams, Helen L. Neil, Jian-Xin Zhao

International Journal of Speleology

The occurrence of speleothems in New Zealand with reversed magnetism indicates that secondary calcite deposition in caves has occurred for more than 780 thousand years (ka). 394 uranium-series dates on 148 speleothems show that such deposition has taken place somewhere in the country with little interruption for more than 500 ka. A relative probability distribution of speleothem ages indicates that most growth occurred in mild, moist interglacial and interstadial intervals, a conclusion reinforced by comparing peaks and troughs in the distribution with time series curves of speleothem δ18O and δ13C values. The stable isotope time series ...


A Re-Appraisal Of The Stratigraphy, Palaeontology And Dating Of Cow Cave, Chudleigh, Devon, England, Jim W. Simons 2010 University of South Florida

A Re-Appraisal Of The Stratigraphy, Palaeontology And Dating Of Cow Cave, Chudleigh, Devon, England, Jim W. Simons

International Journal of Speleology

Cow Cave is an important Quaternary paleontological site in Chudleigh Gorge, Devon, UK., now known to have a sequence of cave-earths and stalagmite floors that range in age from Upper Middle Pleistocene (~MIS 7 interglacial) through to the Holocene (Flandrian) and the present day. Excavations in 1927-1934, and again in 1962-3, have provided a rich fauna, with some artefacts. Here, the stratigraphy of the deposits is now more fully described and the faunal remains are considered in their stratigraphical contexts. Data supporting the existence of former cave entrances are presented along with an analysis of the processes of sedimentation and ...


Do Karst Rivers “Deserve” Their Own Biotic Index? A Ten Years Study On Macrozoobenthos In Croatia, Biljana Rađa, Sanja Puljas 2010 University of Split

Do Karst Rivers “Deserve” Their Own Biotic Index? A Ten Years Study On Macrozoobenthos In Croatia, Biljana Rađa, Sanja Puljas

International Journal of Speleology

In this study we present the results of a ten year survey of the aquatic macroinvertebrate fauna along four karst rivers: Jadro, Žrnovnica, Grab and Ruda, all of them situated in the Middle Dalmatia region of Croatia, in an attempt to construct the Iliric Biotic Index, which will be more applicable for the water quality analysis than the most frequently applied biotic index in Croatia, the Italian Modification of Extended Biotic Index. The rivers geologically belong to the Dinaric karst, unique geological phenomena in Europe. Benthic macroinvertebrates were collected along each river at 15 sites by standard methods of sampling ...


Spatial And Temporal Patterns In Nitrous Oxide Flux From Agricultural Soil In Southern Ontario, Michelle E. Zurbrigg 2010 Wilfrid Laurier University

Spatial And Temporal Patterns In Nitrous Oxide Flux From Agricultural Soil In Southern Ontario, Michelle E. Zurbrigg

Theses and Dissertations (Comprehensive)

This research examines spatial and temporal variations in N2O flux from agricultural clay loam in corn-wheat and corn-oat rotations in southern Ontario. Gas samples are collected by the chamber method following significant precipitation events, thaw events, fertilization events, and otherwise every two weeks over a two-year period. Crop type appears to influence the magnitude of N2O emisions, whereas N2O fluxes do not otherwise seem to vary by landscape position. The seasonal pattern of in situ N2O flux at Strawberry Creek (SC) indicates that the highest N2O emissions are occuring during ...


Plant Isotopes As Indicators Of N Cycling Processes In Agricultural Fields, Eric Thuss 2010 Wilfrid Laurier University

Plant Isotopes As Indicators Of N Cycling Processes In Agricultural Fields, Eric Thuss

Theses and Dissertations (Comprehensive)

When nitrogen (N) availability exceeds biological demand, excess N, especially nitrate (NO3), may subsequently pollute ground and surface water. Agricultural practices in Southern Ontario typically supplement soils with organic and inorganic nutrients to aid in crop development, and employ various management techniques to limit nutrient loss. Excess N has several potential fates, which are controlled by the net effects of numerous N cycling reactions in the soil that are often difficult to measure directly. N cycling in soils is controlled in large part by soil moisture, as it affects microbial activity and soil redox conditions. Stable isotope geochemistry is ...


Carbon Dioxide Exchange In A Permafrost-Dominated Boreal Wetland In The Northwest Territories, Canada, Andrea J. Kenward 2010 Wilfrid Laurier University

Carbon Dioxide Exchange In A Permafrost-Dominated Boreal Wetland In The Northwest Territories, Canada, Andrea J. Kenward

Theses and Dissertations (Comprehensive)

Northern boreal wetland complexes are substantial reservoirs for carbon and play a crucial role in both regional and global carbon budgets but they are showing significant signs of impact by climate change. This study examined the carbon dioxide flux of a high boreal wetland during the snowmelt and growing season of 2008 in Scotty Creek Basin, located near Fort Simpson (61°18'N, 121°18'W), Northwest Territories. This basin is not only responding to shifts in atmospheric temperatures, but it is also under additional pressure from increasing permafrost degradation. A dynamic closed-system chamber was used to monitor and quantify ...


Origin And Geochemical Evolution Of Mafic Magmas From Mount Baker In The Northern Cascade Arc, Washington: Probes Into The Mantle And Crustal Processes, Nicole E. Moore 2010 Western Washington University

Origin And Geochemical Evolution Of Mafic Magmas From Mount Baker In The Northern Cascade Arc, Washington: Probes Into The Mantle And Crustal Processes, Nicole E. Moore

WWU Graduate School Collection

Five mafic lava flows located on the southern flank of Mount Baker are among the most primitive in the volcanic field. A comprehensive whole rock and mineral chemistry dataset (including major, trace, REE and isotopic abundances as well as petrography and mineral chemistry) reveals the diversity between these mafic lavas, which come from distinct sources and have been variably affected by ascent through the crust. Disequilibrium textures present in all of the lavas indicate that crustal processes have affected the magmas. Despite this evidence, mantle source characteristics have been retained, demonstrated by a lack of variation in the most highly ...


Magmatic Processes In The Jurassic Bonanza Arc: Insights From The Alberni Region Of Vancouver Island, Canada, Benjamin D. (Benjamin David) Paulson 2010 Western Washington University

Magmatic Processes In The Jurassic Bonanza Arc: Insights From The Alberni Region Of Vancouver Island, Canada, Benjamin D. (Benjamin David) Paulson

WWU Graduate School Collection

The Early to Middle Jurassic Bonanza island arc on Vancouver Island, Canada, exposes the middle and upper crust of an ancient arc crustal section. The arc is exposed for a length of ~500 km along the west coast of Vancouver Island. The three components of the Bonanza arc represent different crustal levels of magmatism. The deepest level of magmatism is represented by the Westcoast Crystalline Complex, the intermediate level is represented by the Island Intrusions Suite, and the surficial level is the represented by Bonanza Group volcanics. Samples of the volcanic section were collected in the Pemberton Hills region of ...


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