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Articles 10411 - 10440 of 11462
Full-Text Articles in Physical Sciences and Mathematics
Physical And Sequence Stratigraphy Of The Late Cretaceous Chispa Summit Formation, Jeff Davis County, Texas, Patrick Thomas Dietzel
Physical And Sequence Stratigraphy Of The Late Cretaceous Chispa Summit Formation, Jeff Davis County, Texas, Patrick Thomas Dietzel
Open Access Theses & Dissertations
The Late Cretaceous Chispa Summit Formation of west Texas has historically been of interest to the petroleum industry; with new technologies, this old, uneconomical play could prove significant, if not for energy resources, for educational purposes, but little work has been conducted on the formation. The Eagle Ford Formation of southern Texas is time equivalent to the Chispa Summit Formation and is a highly prolific hydrocarbon resource.
Located in western Jeff Davis County, Texas, the Chispa Summit Formation consists of marine shales interbedded with limestone beds and sporadically located siliciclastic beds, measuring a total of 610 m at the type …
Information Economics And Competitive Strategy, Eric K. Clemons, Kim Huat Goh, Robert John Kauffman, Thomas A. Weber
Information Economics And Competitive Strategy, Eric K. Clemons, Kim Huat Goh, Robert John Kauffman, Thomas A. Weber
Research Collection School Of Computing and Information Systems
This Special Issue represents the revised and expanded best papers from the TwentyFifth Anniversary Symposium on Competitive Strategy, Economics and Information Systems held at the 2013 Hawaii International Conference on System Sciences and the related conference mini-track. It also represents 25 years of continuing progress and evolution in the field, and many years of a pioneering partnership between the Journal of Management Information Systems and the field of information economics and competitive strategy. JMIS was perhaps the first academic venue to welcome the field, predating the Workshop on Information Systems and Economics (WISE), and has provided a welcome home as …
Review: Cyclicity Results For Some Antianalytic Toeplitz Operators Acting On H^P, Stephan Ramon Garcia
Review: Cyclicity Results For Some Antianalytic Toeplitz Operators Acting On H^P, Stephan Ramon Garcia
Pomona Faculty Publications and Research
No abstract provided.
Review: On Some Bergman Shift Operators, Stephan Ramon Garcia
Review: On Some Bergman Shift Operators, Stephan Ramon Garcia
Pomona Faculty Publications and Research
No abstract provided.
Topological Symmetry Groups Of Graphs In 3-Manifolds, Erica Flapan, Harry Tamvakis
Topological Symmetry Groups Of Graphs In 3-Manifolds, Erica Flapan, Harry Tamvakis
Pomona Faculty Publications and Research
We prove that for every closed, connected, orientable, irreducible 3-manifold there exists an alternating group A_n which is not the topological symmetry group of any graph embedded in the manifold. We also show that for every finite group G there is an embedding T of some graph in a hyperbolic rational homology 3-sphere such that the topological symmetry group of T is isomorphic to G.
Constructions And Enumeration Methods For Cubic Graphs And Trees, Erica R. Gilliland
Constructions And Enumeration Methods For Cubic Graphs And Trees, Erica R. Gilliland
Undergraduate Honors Thesis Collection
The goal of this thesis is to study two related problems that, in the broadest terms, lie in a branch of mathematics called graph theory. The first problem examines some new techniques for constructing a Hamilton graph of least possible order and having a preassigned girth, and the second concerns the enumeration of a certain type of graphs called trees.
Recommended Management Strategies To Limit Anthropogenic Noise Impacts On Greater Sage-Grouse In Wyoming, Gail L. Patricelli, Jessica L. Blickley, Stacie L. Hooper
Recommended Management Strategies To Limit Anthropogenic Noise Impacts On Greater Sage-Grouse In Wyoming, Gail L. Patricelli, Jessica L. Blickley, Stacie L. Hooper
Human–Wildlife Interactions
Recent research has demonstrated that noise from natural gas development negatively impacts sage-grouse (Centrocercus urophasianus) abundance, stress levels, and behaviors. Other types of anthropogenic noise sources are similar to gas-development noise and, thus, the response by sage-grouse is likely to be similar. The results of research suggest that effective management of the natural soundscape is critical to the conservation and protection of sage-grouse. The goals of this review are to discuss current approaches in the management of new and existing noise sources in Wyoming and recommend research priorities for establishing effective noise management strategies. We make 4 interim …
Putting Local Knowledge And Context To Work For Gunnison Sage-Grouse Conservation, Corrine Noel Knapp, James Cochran, F. Stuart Chapin Iii, Gary Kofinas, Nathan Sayre
Putting Local Knowledge And Context To Work For Gunnison Sage-Grouse Conservation, Corrine Noel Knapp, James Cochran, F. Stuart Chapin Iii, Gary Kofinas, Nathan Sayre
Human–Wildlife Interactions
Successful conservation requires adequate understanding of focal species and ecology, practices that may assist species survival, and a community of people willing and able to conserve the species. For many species at risk, we operate with imperfect knowledge in complex conservation contexts. In this case study involving the Gunnison sage-grouse (Centrocercus minimus), we interviewed 26 community-defined local experts, including both those with and without related academic degrees, to assess the utility of local knowledge for understanding and informing conservation opportunities.This project suggests several benefits of integrating local knowledge that apply specifically to rare and endemic populations, including the …
Stakeholder Contemporary Knowledge Needs Regarding The Potential Effects Of Tall Structures On Sage-Grouse, Terry A. Messmer, Robert Hasenyager, James Burruss, Sherry Liguori
Stakeholder Contemporary Knowledge Needs Regarding The Potential Effects Of Tall Structures On Sage-Grouse, Terry A. Messmer, Robert Hasenyager, James Burruss, Sherry Liguori
Human–Wildlife Interactions
The U.S. Energy Policy Act of 2005 required all state and federal agencies to grant utilities access permits to promote reliable, renewable energy production and transmission. Contemporary transmission relies largely on above-ground electric transmission structures and lines. The construction, operation, and maintenance of tall structures, such as power lines, communication towers, wind turbines, and other installations and their associated activities in sage-grouse (Centrocercus spp.) habitats were identified as a conservation threat by the U.S. Fish and Wildlife Service in its decision to designate greater sage-grouse (C. urophasianus; hereafter, sage-grouse) as a candidate species for protection under the Endangered …
Livestock Predation By Common Leopard In Binsar Wildlife Sanctuary, India: Human-Wildlife Conflicts And Conservation Issues, Chandra Prakash Kala, Kishor Kumar Kothari
Livestock Predation By Common Leopard In Binsar Wildlife Sanctuary, India: Human-Wildlife Conflicts And Conservation Issues, Chandra Prakash Kala, Kishor Kumar Kothari
Human–Wildlife Interactions
We investigate livestock predation by the common leopard (Panthera pardus) and emerging conflicts between this species, local people, and wildlife authorities at the Binsar Wildlife Sanctuary in the Himalayan region of India. We scrutinized secondary data that were collected by wildlife authorities; we also conducted informal interviews of villagers living within sanctuary, and wildlife staff to understand various human–leopard conflicts. Leopard density was approximately 0.33/km2 in the sanctuary. Leopards killed 1,763 domestic animals, about 90% of which were cattle, during a 14-year period. Within the sanctuary, leopards killed 1 person and injured 9 others. This high depredation rate …
Determination Of Structural Stabilities Of Metal-Free Porphyrin Cytochrome C, Zinc Cytochrome C, And Cobalt Cytochrome C, Usha K. Tottempudi
Determination Of Structural Stabilities Of Metal-Free Porphyrin Cytochrome C, Zinc Cytochrome C, And Cobalt Cytochrome C, Usha K. Tottempudi
Masters Theses
No abstract provided.
Internet Accessible Remote Real-Time Laboratory For Computer Networking Curriculum, Oyindamola Idowu
Internet Accessible Remote Real-Time Laboratory For Computer Networking Curriculum, Oyindamola Idowu
Masters Theses
Despite the availability of equipment required to teach hands-on laboratory practices in a computer networking curriculum, educators are faced with the challenge of extending such practices to students in remote locations. Distance learning has become a substantial part of the current education system, requiring institutes of learning adjusting from traditional face-to-face courses to content that can be carried out over the internet so that students can complete part or all the requirements for certain courses in an online modality. Unfortunately, traditional networking laboratories were designed with the assumption students will be physically present. This research is aimed to provide at …
Effectiveness Of Flipping The Classroom In A Honors Level, Mechanics-Based Physics Class, Stephen J. Zownorega
Effectiveness Of Flipping The Classroom In A Honors Level, Mechanics-Based Physics Class, Stephen J. Zownorega
Masters Theses
No abstract provided.
From Half-Rotaxanes To Poly-Rotaxane Architectures, Heather Renee Schoonover
From Half-Rotaxanes To Poly-Rotaxane Architectures, Heather Renee Schoonover
Masters Theses
The host-guest abilities of macrocyclic compounds made them important players in the field of supramolecular chemistry, especially those studying mechanical bonds. Rotaxanes and catenanes are among the most well-known examples of mechanically interlocked molecules. Our approach in the synthesis of poly-rotaxane systems involves the preparation of pseudorotaxanes with donor capabilities and then use metallic centers to assemble the poly-rotaxane architectures.
A pyridine-based half-rotaxane has been synthesized and the subsequent solution studies revealed a large association constant. 1H-NMR studies show that these interlocked species exhibit a slow exchange on the NMR timescale. Using the single point method and VT-NMR several …
The Effects Of Chemical Treatment And Light Exposure On Pah Concentrations In Biochar, Fathima Nadheesha Muhammed Khalid
The Effects Of Chemical Treatment And Light Exposure On Pah Concentrations In Biochar, Fathima Nadheesha Muhammed Khalid
Masters Theses
A series of experiments quantifying extractable polycyclic aromatic hydrocarbons (PAHs) in biochar before and after various treatments were conducted. The analytical approach included solvent extraction of PAHs with toluene, further isolation and column cleanup before gas chromatography mass spectroscopy (GC-MS) analysis. The treatment methods include exposing biochar samples to sunlight and UV radiation with and without additives and reacting with hydrogen peroxide.
Two biochar samples from the Eastern Illinois University bench-type gasifier and commercial biochar were analyzed. Analyzing of three biochar types revealed that plant biochar has lower total PAH concentration than wood (W) biochar or wood and plant (giant …
Evaluating The Effectiveness Of The All Power Labs Power Pallet As A Training Tool For Biomass Gasification Education, Christopher Che Frederick
Evaluating The Effectiveness Of The All Power Labs Power Pallet As A Training Tool For Biomass Gasification Education, Christopher Che Frederick
Masters Theses
The purpose of this study was to provide a better understanding of classroom training with regard to renewable energies. A lecture series and survey were developed by the principle researcher and presented to students in the Alternative and Renewable Energy Systems class and Machine Design class at Eastern Illinois University. The lecture series introduced students to biomass gasification and its application at Eastern Illinois University. The survey analyzed participant's level of knowledge of gasification technologies. The survey's pre and post test scores were used to validate the effectiveness of the training.
The All Power Labs Power Pallet was utilized as …
Investigation Of Wastewater Treatment Plant Sustainability Potential In Terms Of Resource Recovery Essentials, Aoife Moloney
Investigation Of Wastewater Treatment Plant Sustainability Potential In Terms Of Resource Recovery Essentials, Aoife Moloney
Theses
This thesis aims to explore the sustainability potential which exists in Wastewater Treatment Plants (WWTP's); particularly focusing on nutrient, energy, and water recovery and reuse. The core of the research will focus on the establishment of a sustainable Resource Recovery Treatment Plant (RRTP) plan for Limerick Main Drainage (LMD) WWTP, and potentially utilising this as a case study plant which could act as a foundation example within the sector.
There is a genuine need to investigate more sustainable options in wastewater treatment (WWT); increasing energy and sludge management costs are a real issue for non-sustainable WWTP's given that thousands of …
Optical Emission Properties Of Band Structure Tailored Semiconductor Nanostructures, Nicola Pavarelli
Optical Emission Properties Of Band Structure Tailored Semiconductor Nanostructures, Nicola Pavarelli
Theses
In the past decades, with the development of low-dimensional semiconductor heterostructures, research has been focused on studying novel materials and proposing new solutions for the improvement and optimization of numerous optoelectronic applications. Examples of these applications include optical data storage, displays and medical diagnostics in the ultraviolet and visible spectral range, or telecommunication networks, solar cells, gas sensing and imaging systems in the near- and mid-infrared. In this thesis, the optical characterization of a number of promising semiconductor nanostructures for the realization of next-generation optoelectronic devices is reported. The optical emission properties of each structure, measured by means of power-dependent …
Corrected Numbers For Fish On Red List, Bruce B. Collette, Beth Polidoro, Kent Carpenter
Corrected Numbers For Fish On Red List, Bruce B. Collette, Beth Polidoro, Kent Carpenter
Biological Sciences Faculty Publications
(First paragraph) Kelly Swing gives inaccurate numbers for marine fish species on the International Union for Conservation of Nature (IUCN) Red List of Threatened Species. He also mistakenly conflates the scientific process of species assessment for the Red List with the separate political process of IUCN member voting (Nature 494, 314; 2013).
Assessment Of Riparian Conditions In The Nooksack River Basin With The Combination Of Lidar, Multi-Spectral Imagery And Gis, Erica M. Capuana
Assessment Of Riparian Conditions In The Nooksack River Basin With The Combination Of Lidar, Multi-Spectral Imagery And Gis, Erica M. Capuana
WWU Graduate School Collection
Riparian areas are a complex component of stream ecosystems and provide critical habitat for Pacific salmon (Oncorhynchus spp.). Comprehensive techniques are needed for assessing riparian areas that can be used on small and large regional scales. I examined the application of airborne LiDAR and high resolution multi-spectral imagery from the World View-2 (WV-2) satellite to analyze riparian landcover and riparian forest structure in the Nooksack River Watershed. I employed an object-oriented approach to segment the imagery into meaningful objects consisting of groups of pixels. I examined the advantages of the four additional spectral bands from the 8-Band World View-2 Image …
Using Gis To Delineate Headwater Stream Origins In The Appalachian Coal-Belt Region Of Kentucky, Jonathan A. Villines
Using Gis To Delineate Headwater Stream Origins In The Appalachian Coal-Belt Region Of Kentucky, Jonathan A. Villines
Theses and Dissertations--Biosystems and Agricultural Engineering
Human activity such as surface mining can have substantial impacts on the natural environment. Performing a Cumulative Hydrologic Impact Assessment (CHIA) of such impacts on surface water systems requires knowing the location and extent of these impacted streams. The Jurisdictional Determination (JD) of a stream’s protected status under the Clean Water Act (CWA) involves locating and classifying streams according to their flow regime: ephemeral, intermittent, or perennial. Due to their often remote locations and small size, taking a field inventory of headwater streams for surface mining permit applications or permit reviews is challenging. A means of estimating headwater stream location …
Efficient Electrochemical Functionalization Of Carbon Nanotubes And Carbon Nanotube Membranes For Energy, Drug Delivery And Potential Catalysis Applications, Xin Zhan
Theses and Dissertations--Chemistry
Electrochemical diazonium grafting offers versatile functionalization of chemically inert graphite under mild condition, which is particularly suitable for CNT composite modification. Tetrafluorinated carboxylphenyl diazonium grafting provides the most controllable functionalization chemistry allowing near monolayer levels of functionality on carbon nanotubes. The functional density was successfully quantified by anion selective dye-assay and X-ray photoelectron spectroscopy (XPS) of thiol-Au self-assembled monolayers (SAM) as a calibration reference. This technique enables monolayer functionality at the tips of carbon nanotube membranes for biomimetic pumps and valves as well as thin conductive layers for CNT-based high area electrochemical support electrodes.
Double-walled carbon nanotube (DWCNT) membranes were …
Acenes And Acenequinones For Optics And Organic Electronics, Matthew Bruzek
Acenes And Acenequinones For Optics And Organic Electronics, Matthew Bruzek
Theses and Dissertations--Chemistry
Acenes have been explored by a number of research groups in the field of organic electronics with a particular emphasis on transistor materials. This group has been actively studying acene‐based organic semiconductors for more than a decade using a crystal engineering approach and has developed acene derivatives for applications in field‐effect transistors, light‐emitting diodes, and photovoltaics. In addition to organic electronics, crystal engineering has important applications in a number of other fields, quite notably in the design of metal‐organic frameworks. Chapters 2 and 3 of this dissertation focus on applying crystal engineering to the synthesis of acene derivatives for use …
N-Doped Multiwalled Carbon Nanotubes: Functionalization, Characterization And Application In Li Ion Batteries, Aman Preet Kaur
N-Doped Multiwalled Carbon Nanotubes: Functionalization, Characterization And Application In Li Ion Batteries, Aman Preet Kaur
Theses and Dissertations--Chemistry
The focus of this dissertation is to utilize chemical functionalization as a probe to investigate the reactivity of N-doped multiwalled carbon nanotubes (N-MWCNTs). The surface of N-MWCNTs, being a set of potentially reactive graphene edges, provides a large number of reactive sites for chemical modification, so considerable changes in chemical and physical properties can be envisaged. We observed that both reduction (dissolving metal reduction/alkylation) and oxidation (H2SO4/HNO3 and H2SO4/KMnO4 mixtures) of N-MWCNTs lead to formation of interesting spiral channels and spiraled carbon nanoribbons. A variety of techniques, including TGA, SEM, …
Optimization Of The Optical And Electrochemical Properties Of Donor-Acceptor Copolymers Through Functional Group And Side Chain Modification, Mark J. Seger
Theses and Dissertations--Chemistry
Donor-acceptor copolymers have received a great deal of attention for application as organic semiconductors, in particular as the active layers in low-cost consumer electronics. The functional groups grafted to the polymer backbones generally dictate the molecular orbital energies of the final materials as well as aid in self-assembly. Additionally, the side chains attached to these functional groups not only dictate the solubility of the final materials, but also their morphological characteristics. The bulk of the research presented in this dissertation focuses on the synthesis and structure-property relationships of polymers containing novel acceptor motifs. Chapter 2 focuses on the synthesis of …
Fluorinated Arene, Imide And Unsaturated Pyrrolidinone Based Donor Acceptor Conjugated Polymers: Synthesis, Structure-Property And Device Studies, Arawwawala Don T. Liyanage
Fluorinated Arene, Imide And Unsaturated Pyrrolidinone Based Donor Acceptor Conjugated Polymers: Synthesis, Structure-Property And Device Studies, Arawwawala Don T. Liyanage
Theses and Dissertations--Chemistry
FLUORINATED ARENE, IMIDE AND LACTAM-FUNCTIONALIZED DONOR ACCEPTOR CONJUGATED POLYMERS: SYNTHESIS, STRUCTURE-PROPERTY AND DEVICE STUDIES
After the discovery of doped polyacetylene, organic semiconductor materials are widely studied as high impending active components in consumer electronics. They have received substantial consideration due to their potential for structural tailoring, low cost, large area and mechanically flexible alternatives to common inorganic semiconductors. To acquire maximum use of these materials, it is essential to get a strong idea about their chemical and physical nature. Material chemist has an enormous role to play in this novel area, including development of efficient synthetic methodologies and control the …
Hydrogenation And Hydrogenolysis Of Furan Derivatives Using Bipyridine-Based Electrophilic Ruthenium(Ii) Catalysts, Anitha Shankaralinge Gowda
Hydrogenation And Hydrogenolysis Of Furan Derivatives Using Bipyridine-Based Electrophilic Ruthenium(Ii) Catalysts, Anitha Shankaralinge Gowda
Theses and Dissertations--Chemistry
The catalytic activity of ruthenium(II) bis(diimine) complexes cis-[Ru(6,6′-Cl2bpy)2(OH2)2](Z)2 (2, Z = CF3SO3; 3, Z = (3,5-(CF3)2C6H3)4B ,i.e. BArF), cis-[Ru(4,4′-Cl2bpy)2(OH2)2](Z)2 (4, Z = CF3SO3; 5, Z = BArF) and cis-[Ru(bpy)2(PR3)(OH2)](CF3SO3)2 (7, bpy = 2,2’-bipyridine, PR3 = P(C6H4F)3 …
Application Of Acoustics And Optics For The Characterization Of Suspended Particulate Matter Within An Estuarine Observing System, Grace M. Cartwright
Application Of Acoustics And Optics For The Characterization Of Suspended Particulate Matter Within An Estuarine Observing System, Grace M. Cartwright
Dissertations, Theses, and Masters Projects
As part of this dissertation work, a long term observing station at Clay Bank on the York River in Virginia has been established and maintained since 2006, and was used to gain a better understanding of sediment processes in a muddy estuary and in muddy coastal environments in general. While data from this NSF-funded Multi-Disciplinary Benthic Exchange Dynamic (MUDBED) observing system has and will be used by other students for this general purpose, this dissertation focuses specifically on better understanding and interpretation of the data collected by key instrumentation regularly deployed at the observing station, especially the acoustic Doppler velocimeter …
Acoustic And Sedimentological Investigations Of Seabed Conditions And Related Bio-Geological Parameters In A Tidally Energetic, Fine-Grained Environment: York River Estuary, Virginia, Lindsey M. Kraatz
Dissertations, Theses, and Masters Projects
The transport and fate of fine-grained sediments is a critical factor affecting the physical, chemical, and biological health of estuaries, coastal embayments, riverine, lacustrine, and continental shelf environments. A geophysical and sedimentological study of the York River as a part of the NSF Multi-disciplinary Benthic Exchange Dynamics (MUDBED) project was conducted to determine: 1) the primary drivers of sediment erodibility within a fine-grained system, 2) if these drivers can be accurately measured through sedimentological and acoustic information, and 3) the spatial and seasonal variability of erosion within the estuary. Previous studies indicate that increased erodibility within the York River Estuary …
Electroless Gold Deposition With Self-Assembled Monolayers For Gas Chromatography Stationary Phases, Jessica Lynn Belton
Electroless Gold Deposition With Self-Assembled Monolayers For Gas Chromatography Stationary Phases, Jessica Lynn Belton
Dissertations, Theses, and Masters Projects
No abstract provided.