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Zinc Oxide Nanoparticle Disruption Of Store-Operated Calcium Entry In A Muscarinic Receptor Signaling Pathway, Hsiu-Jen Wang 2010 Missouri University of Science and Technology

Zinc Oxide Nanoparticle Disruption Of Store-Operated Calcium Entry In A Muscarinic Receptor Signaling Pathway, Hsiu-Jen Wang

Masters Theses

"The influences of ZnO nanoparticles on cellular responses to activation of muscarinic receptors were studied in Chinese hamster ovary cells expressing the human M3 muscarinic acetylcholine receptor. ZnO particles (20 nm) induced cytotoxicity in a time and concentration-dependent manner: following a 24 h exposure, toxicity was minimal at concentrations below 20 µg/ml but virtually complete at concentrations above 28 µg/ml. ZnO particles did not affect antagonist binding to M3 receptors or allosteric ligand effects, but increased agonist binding affinity while eliminating guanine nucleotide sensitivity. At a noncytotoxic concentration (10 µg/ml), ZnO increased resting [Ca²⁺]i from 40 ...


Ecological And Evolutionary Connectivity Of Reef Corals In Subtropical Eastern Australia : Implications For The Persistence Of High-Latitude Coral Populations, Annika ME Noreen 2010 Southern Cross University

Ecological And Evolutionary Connectivity Of Reef Corals In Subtropical Eastern Australia : Implications For The Persistence Of High-Latitude Coral Populations, Annika Me Noreen

Theses

Coral reefs worldwide are threatened by a variety of pressures, and climate change models predict increasing levels of chronic stress as well as acute disturbances for most reefs. In addition to these global threats, populations on remote reefs are also predicted to be vulnerable due to their isolation from potential source reefs, usually low population size and associated increased extinction risk. Critical for the future of these reefs is dispersal and gene flow between populations (connectivity). This study investigated connectivity, population subdivision, and genetic diversity for three scleractinian reef coral species in discontinuous high-latitude nearshore coral communities and offshore reefs ...


Working With Beaver For Better Habitat Naturally, Sherri Tippie, Mary O'Brien 2010 Wildlife 2000

Working With Beaver For Better Habitat Naturally, Sherri Tippie, Mary O'Brien

Other Publications in Wildlife Management

There are many reasons to encourage the return of beaver to their historical creeks and streams, including increased stream functioning, enhanced biodiversity, adaptation to climate change, and wetlands creation.

This publication teaches us how to respect and live with beaver; but if we insist on moving beaver, it provides information on how to do so with care.


Developing Performance Indicators To Evaluate The Management Effectiveness Of The Massachusetts Ocean Management Plan, Jack Wiggin, Dan Hellin, Kristin Uiterwyk, Robert E. Bowen, Prassede Vella, John Weber, Stephanie Moura, Nicholas Napoli, Kim Starbuck, Howard Krum 2010 University of Massachusetts Boston

Developing Performance Indicators To Evaluate The Management Effectiveness Of The Massachusetts Ocean Management Plan, Jack Wiggin, Dan Hellin, Kristin Uiterwyk, Robert E. Bowen, Prassede Vella, John Weber, Stephanie Moura, Nicholas Napoli, Kim Starbuck, Howard Krum

Urban Harbors Institute Publications

In June 2009, the Massachusetts Executive Office of Energy and Environmental Affairs (EEA) released its draft Massachusetts Ocean Management Plan (draft plan) for public comment. The plan is required by the Oceans Act of 2008 to, among other things, be adaptive to evolving knowledge and understanding of the ocean environment. The plan’s Science Framework establishes a blueprint for future research and data acquisition and ensuring that the plan evolves and its management measures adapt to this new and enhanced information. As stated in Chapter 5 of the draft plan, an important part of the science framework is the development ...


Fire Disturbance, Forest Structure, And Stand Dynamics In Montane Forests Of The Southern Cascades, Thousand Lakes Wilderness, California, Usa, Matthew F. Bekker, Alan H. Taylor 2010 Brigham Young University

Fire Disturbance, Forest Structure, And Stand Dynamics In Montane Forests Of The Southern Cascades, Thousand Lakes Wilderness, California, Usa, Matthew F. Bekker, Alan H. Taylor

Wasatch Dendroclimatology Research

We examined tree diameter, age structure, and successional trends in 100 montane forest plots to identify the effects of variation in the return interval, severity, and extent of fires on forest structure and dynamics in the southern Cascade Range, California. We classified 100 forest plots into 8 groups based on stand structural characteristics. Median point fire return intervals were shortest in lower montane mixed conifer and Jeffrey pine–white fir stands (13-25 y) and upper montane red fir–white fir stands (14.5-19.5 y), intermediate in lodgepole pine stands (50-76.5 y), and longest in high-elevation red fir–mountain ...


The Index Of Biological Integrity And The Bootstrap: Can Random Sampling Error Affect Stream Impairment Decisions?, Christine L. Dolph, Aleksey Y. Sheshukov, Christopher J. Chizinski, Bruce Vondracek, Bruce N. Wilson 2010 University of Minnesota

The Index Of Biological Integrity And The Bootstrap: Can Random Sampling Error Affect Stream Impairment Decisions?, Christine L. Dolph, Aleksey Y. Sheshukov, Christopher J. Chizinski, Bruce Vondracek, Bruce N. Wilson

Nebraska Cooperative Fish & Wildlife Research Unit -- Staff Publications

Multimetric indices, such as the Index of Biological Integrity (IBI), are increasingly used bymanagement agencies to determine whether surface water quality is impaired. However, important questions about the variability of these indices have not been thoroughly addressed in the scientific literature. In this study, we used a bootstrap approach to quantify variability associated with fish IBIs developed for streams in two Minnesota river basins. We further placed this variability into a management context by comparing it to impairment thresholds currently used in water quality determinations for Minnesota streams. We found that 95% confidence intervals ranged as high as 40 points ...


Locus Of Control, Sources Of Motivation, And Mental Boundaries As Antecedents Of Leader-Member Exchange Quality, John E. Barbuto Jr., Dayna Finch Weltmer, Lisa A. Pennisi 2010 University of Nebraska-Lincoln

Locus Of Control, Sources Of Motivation, And Mental Boundaries As Antecedents Of Leader-Member Exchange Quality, John E. Barbuto Jr., Dayna Finch Weltmer, Lisa A. Pennisi

Papers in Natural Resources

No abstract provided.


Diurnal Fluctuations In Shallow Groundwater Levels And In Streamflow Rates And Their Interpretation: A Review, Zoltan Gribovszki, Jozsef Szilagyi, Peter Kalicz 2010 University of West Hungary

Diurnal Fluctuations In Shallow Groundwater Levels And In Streamflow Rates And Their Interpretation: A Review, Zoltan Gribovszki, Jozsef Szilagyi, Peter Kalicz

Papers in Natural Resources

No abstract provided.


Complementary-Relationship-Based Evapotranspiration Mapping (Cremap) Technique For Hungary, Jozsef Szilagyi, Akos Kovacs 2010 University of Nebraska-Lincoln

Complementary-Relationship-Based Evapotranspiration Mapping (Cremap) Technique For Hungary, Jozsef Szilagyi, Akos Kovacs

Papers in Natural Resources

No abstract provided.


Multi-Decadal Surface Temperature Trends In East Antarctica Inferred From Borehole Firn Temperature Measurements And Geophysical Inverse Methods, Atsuhiro Muto 2010 University of Colorado at Boulder

Multi-Decadal Surface Temperature Trends In East Antarctica Inferred From Borehole Firn Temperature Measurements And Geophysical Inverse Methods, Atsuhiro Muto

Geography Graduate Theses & Dissertations

The climate trend of the Antarctic interior remains unclear relative to the rest of the globe because of a lack of long-term weather records. Recent studies by other authors utilizing sparse available records, satellite data, and models have estimated a significant warming trend in the near-surface air temperature in West Antarctica and weak and poorly constrained warming trend in East Antarctica for the past 50 years. In this dissertation, firn thermal profiling was used to detect multi-decadal surface temperature trends in the interior of East Antarctica where few previous records of any kind exist. The surface temperature inversion from firn ...


Assessing Supraglacial Water Volume And The Changing Dynamics Of The Surface Topography Near The Jakobshavn Glacier, Greenland, John Adler 2010 University of Colorado at Boulder

Assessing Supraglacial Water Volume And The Changing Dynamics Of The Surface Topography Near The Jakobshavn Glacier, Greenland, John Adler

Geography Graduate Theses & Dissertations

On the Greenland Ice Sheet (GIS), the effect of the melt season’s changing supraglacial lakes on outlet glacier discharge is not well understood. It is known that many supraglacial lakes drain rapidly during each melt season. While there are conflicting theories of the significance of supraglacial lake drainages towards enhancing ice sheet flow, it is highly important to quantify the actual water volume of supraglacial lakes since their drainage via crevasses or moulins enables the injection of melt water directly into the GIS. The 2008 Arctic MUltiSensor Cryospheric Observation eXperiment (Arctic MUSCOX) was the first scientific Unmanned Aircraft System ...


Data For Modelers--Helping Understand The Climate System, Mark A. Parsons 2010 University of Colorado at Boulder

Data For Modelers--Helping Understand The Climate System, Mark A. Parsons

Geography Graduate Theses & Dissertations

The Arctic is changing rapidly with dramatic local and global effect. To understand that change requires understanding the Arctic as a system. Models of different processes and at various scales are necessary tools for analyzing and understanding the Arctic system. Models are extremely diverse, yet they all require quality data. Through a series of case studies, augmented with ethnographic observation around the International Polar Year, this thesis examines how modelers assess, acquire, and prepare data for their models. By comparing specific case studies, common themes emerge that can be compared against broader observation. These themes, in turn, suggest data management ...


Climatological And Elevational Controls On Organic And Inorganic Nutrients In Stream Waters, Boulder Creek Watershed, Colorado Front Range, Jordan N. Parman 2010 University of Colorado at Boulder

Climatological And Elevational Controls On Organic And Inorganic Nutrients In Stream Waters, Boulder Creek Watershed, Colorado Front Range, Jordan N. Parman

Geography Graduate Theses & Dissertations

Due to short growing seasons, sparse vegetation, thin soils, and a harsh climate, the biota of high elevation ecosystems throughout the Colorado Front Range are sensitive to disturbance. These ecosystems are subject to two major drivers of environmental change: directional changes in climate and increasing inorganic nitrogen (N) deposition in wetfall. By analyzing long term climate records and water chemistry data, we investigate the role of climate and N deposition in determining nitrate export from Green Lakes Valley in the Colorado Front Range. We found that streamwater nitrate concentrations observed at the Green Lakes 4 (GL4) outlet have significantly increased ...


Reanalyses' Performance Of Boundary Layer, Cloud, And Surface Energy Budget Variables Over Arctic Pack Ice, Cassandra Renee Wheeler 2010 University of Colorado at Boulder

Reanalyses' Performance Of Boundary Layer, Cloud, And Surface Energy Budget Variables Over Arctic Pack Ice, Cassandra Renee Wheeler

Atmospheric & Oceanic Sciences Graduate Theses & Dissertations

Earth's climate has been changing rapidly, particularly in the Arctic; however, the Arctic is poorly understood due to spatially and temporally sparse observations. Arctic conditions prove difficult to obtain good quality, long-duration field measurements. Current studies utilize model-observation hybrid datasets (i.e., reanalyses); hence, the accuracy of processes represented in these datasets is important. In this study, meteorological parameters, turbulent fluxes, cloud properties, radiative fluxes, and the surface energy budget from ERA-40, ERA-Interim, NCEP/DOE, and JRA-25 reanalyses are compared to SHEBA observations. Six-hourly reanalyses data were interpolated to the location of the multiyear ice floe and combined, along ...


The Use Of Plug-In Hybrid Electric Vehicles For Peak Shaving, Benjamin Andrew Maples 2010 University of Colorado at Boulder

The Use Of Plug-In Hybrid Electric Vehicles For Peak Shaving, Benjamin Andrew Maples

Mechanical Engineering Graduate Theses & Dissertations

This thesis entitled The Use of Plug-In Hybrid Electric Vehicles For Peak Shaving by Benjamin Maples, submitted to the department of Mechanical Engineering in partial fulfillment of the degree of Master of Science, performed under the supervision of Professor Frank Kreith, is a feasibility analysis of the capabilities of PHEV's for peak shaving. The analysis focuses on energy availability of the PHEV fleet as well as the potential financial benefit to the vehicle owner by analyzing different charging scenarios and circuitry. The energy availability is heavily dependent on the location and availability of charging stations. The potential consumer profit ...


Stratigraphic Architecture Of Shallow-Marine To Coastal-Plain Parasequences: Lower Williams Fork Formation, Southeastern Piceance Basin, Colorado, Rachel Victoria Shaak 2010 University of Colorado at Boulder

Stratigraphic Architecture Of Shallow-Marine To Coastal-Plain Parasequences: Lower Williams Fork Formation, Southeastern Piceance Basin, Colorado, Rachel Victoria Shaak

Geological Sciences Graduate Theses & Dissertations

The lower Williams Fork Formation in the southeastern Piceance Basin represents a transition from coastal-plain to shallow-marine environments of deposition. The stratigraphic architecture of the lower Williams Fork Formation was assessed by defining facies and facies associations in cores and outcrop exposures and then developing relationships between these facies and subsurface well-log signatures. The lower Williams Fork lies stratigraphically above the Rollins Sandstone Member of the Iles Formation and consists of several coal zones, two marine sandstone units informally named the middle and upper sandstones, and coastal-plain to alluvial-plain deposits. Parasequences were identified and correlated in the subsurface to characterize ...


The Sedimentary Response To Climate Change During The Paleocene-Eocene Thermal Maximum, Southeastern Bighorn Basin, Wyoming, U.S.A., Sophia Sims Newbury 2010 University of Colorado at Boulder

The Sedimentary Response To Climate Change During The Paleocene-Eocene Thermal Maximum, Southeastern Bighorn Basin, Wyoming, U.S.A., Sophia Sims Newbury

Geological Sciences Graduate Theses & Dissertations

The Paleocene Eocene Thermal Maximum (PETM) was a rapid episode of dramatic global warming at ~55 MA. This event is recognized by a negative carbon isotope excursion (CIE). In the Bighorn Basin, the lowest ~40 m of the Willwood Formation contains the CIE and represents the sedimentary response to PETM climate change. In the southeastern Bighorn Basin, the PETM interval can be divided into three lithologic units on the basis of alluvial architecture and presence of calcium carbonate nodules. This thesis focus’ on the interval which likely represents the response to peak PETM temperatures.

A detailed study of the facies ...


Sacred Harvest: Wendell Berry, Christian Agrarianism And The Creation Of An Environmental Ethic, Julie Christine Crouse 2010 University of Colorado at Boulder

Sacred Harvest: Wendell Berry, Christian Agrarianism And The Creation Of An Environmental Ethic, Julie Christine Crouse

Religious Studies Graduate Theses & Dissertations

Wendell Berry, a Christian agriculturalist and writer exemplifies through his life and work a new agrarian environmental ethic. This work will present the major tenets of that ethic and place this unique dictate of consciousness within an ongoing conversation about the importance of human morality in an ever-changing natural environment. Berry’s ethic questions the current notion of farming as a profane endeavor, and seeks to bring to light the reality of a connection between humans and landscapes, as well as between religion and agricultural practice. Through presenting the notion of bucolic landscapes as sacred space, Berry endeavors to question ...


Provenance Of The Neoproterozoic Ocoee Supergroup, Eastern Great Smoky Mountains, Suvankar Chakraborty 2010 University of Kentucky

Provenance Of The Neoproterozoic Ocoee Supergroup, Eastern Great Smoky Mountains, Suvankar Chakraborty

University of Kentucky Doctoral Dissertations

The Ocoee Supergroup is a sequence of Neoproterozoic, immature, continental rift facies clastic sediments. Potential source rocks were tested by analyzing modes of detrital framework minerals, detrital mineral chemistry, whole rock geochemistry and detrital zircon U/Pb geochronology by LA-ICP-MS for Ocoee siltstone-sandstone dominated formations. Ocoee units are arkosic to subarkosic siltstones/sandstones, and ternary tectonic discrimination diagrams confirm a continental basement uplift source. Alkali feldspar predominates over plagioclase feldspar. Detrital feldspar compositions of Ocoee sediments as a group are similar to feldspar in local basement granitic rocks except for high-Ca plagioclase grains present locally in basement granitic rocks. The ...


Effect Of Low And High- Kinetic Energy Wetting On Quality Of Sediment Produced By Interrill Erosion, Eduardo Abel Rienzi 2010 University of Kentucky

Effect Of Low And High- Kinetic Energy Wetting On Quality Of Sediment Produced By Interrill Erosion, Eduardo Abel Rienzi

University of Kentucky Doctoral Dissertations

Raindrop kinetic energy and sheet flow can disintegrate aggregates during interrill erosion, a process responsible for non point source pollution. Also, the dissolution process during aggregate wetting can affect interrill erosion. These factors can be responsible for changes in particle size distribution in the sediment, especially when different tillage systems are compared. The effect of soil tillage and management on soil properties is not uniform, which determine a wide range of runoff and sediment delivery rate. Variety in these rates can be associated with pore functions and their interactions with aggregate stability. One of the objectives of this study was ...


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