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Comparative And Sensitivity Study Of The Effects Of Flow Parameters On Pressure Drop In Vertical Tubing, George Kaetochi Elekwachi

Engineering

"Two-phase gas-liquid flow occurs in vertical pipes during the production of reservoir fluids. The two most common flow patterns that are observed during oil production are the Bubble and Slug flows. Determination of pressure drop in two-phase flow is more complicated than single-phase flow because two fluids with different densities flow in the tubing at different velocities. Using two multiphase correlations (Hagedorn and Brown, and Duns and Ros), the effect of fluid properties variation at different flow conditions on pressure drop were studied. Fluid data developed with correlations and West Sak fluid data were used for the analysis. Plots showing …

The Bg News December 17, 2008, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. December 17, 2008. Volume 99-Issue 75.

The Acetylcholine Binding Protein Of Lymnaea Stagnalis As A Biosensor And Model For Ligand Gated Ion Channel Proteins, Abraham Edward Harms-Smyth

Chemistry and Biochemistry

The structural similarity of the Acetylcholine Binding Protein (AChBP) from Lymnaea stagnalis to the extracellular ligand binding domain of Ligand Gated Ion Channel (LGIC) receptors suggests that the AChBP could be used to mimic cys-loop ligand-gated ion channel (LGIC) receptors. An LGIC mimic could be used as a sensor molecule in a range of biotechnology applications including high throughput drug screening as well as in vivo and in vitro sensing of biologically active compounds. It could also be used as a lead molecule for engineering novel proteins with binding characteristics similar to non-acetylcholine receptor LGIC's. The soluble AChBP is easily …

Volume 46, Number 18: December 17, 2008, University Of North Dakota

University Letter Archive

No abstract provided.

Analysis And Interpretation Of Volcano Deformation In Alaska: Studies From Okmok And Mt. Veniaminof Volcanoes, Thomas J. Fournier

Geosciences

Four studies focus on the deformation at Okmok Volcano, the Alaska Peninsula and Mt. Veniaminof. The main focus of the thesis is the volcano deformation at Okmok Volcano and Mt. Veniaminof, but also includes an investigation of the tectonic related compression of the Alaska Peninsula. The complete data set of GPS observations at Okmok Volcano are investigated with the Unscented Kalman Filter time series analysis method. The technique is shown to be useful for inverting geodetic data for time dependent non-linear model parameters. The GPS record at Okmok from 2000 to mid 2007 shows distinct inflation pulses which have several …

Geologic Setting Of The Central Alaskan Hot Springs Belt: Implications For Geothermal Resource Capacity And Sustainable Energy Production, Amanda M. Kolker

Geosciences

The Central Alaskan Hot Springs Belt (CAHSB) is a vast stretch of low-temperature hydrothermal systems that has the potential to be a geothermal energy resource for remote communities in Alaska. Little exploration has occurred in the CAHSB and the resource is poorly understood. A geothermal power plant was installed in 2006 at Chena Hot Springs (CHS), one of the 30-plus hot springs in the CAHSB. This, in addition to the multiple direct use projects at CHS, could serve as a model for geothermal development elsewhere in the CAHSB. This dissertation evaluates the geologic setting of the CAHSB and explores the …

Effects Of Military Overflights On Habitat Use And Selection By Female Dall's Sheep, Yukon-Tanana Uplands, Alaska, Bradley R. Wendling

Biological Sciences

"My objective was to assess the potential effects of military overflights on home range size, movement rates, habitat use, and habitat selection of female Dall's sheep (Ovis dalli) during 2-week sequential periods, April-July, 1999-2002. I examined sheep in 2 study areas overlain with designated military training airspace within the Yukon-Tanana uplands, Alaska. I examined the effects of study area, year, and sequential time period on: 1) mean home range size, 2) mean minimum hourly distance traveled by sheep, and 3) mean use and selection ratios for the habitat variables of elevation, slope, terrain ruggedness, aspect, and landcover class. Mean number …

Balancing The Conservation Of Wildlife Habitat With Road Access For Subsistence Hunting In Yakutat, Alaska, Colin S. Shanley

Biological Sciences

"This thesis was an interdisciplinary investigation with the goal of balancing the conservation of wildlife habitat with road access for subsistence hunting in Yakutat, Alaska. The problem posed by land managers and subsistence moose hunters revolved around the use of off-highway vehicles (OHVs; e.g. 'four-wheelers') for subsistence moose hunting and the potential disturbance OHVs have on moose. This complex social-ecological problem is becoming an increasingly common management dilemma faced by rural mixed cash-subsistence communities across the Circumpolar North. I addressed this problem in two chapters with a combination of methods from wildlife ecology, landscape modeling, subsistence land-use, and scenario planning. …

Economic Analysis Of An Integrated Wind-Hydrogen Energy System For A Small Alaska Community, Steve Colt, Steve Gilbert

ISER Reports

Wind-hydrogen systems provide one way to store intermittent wind energy as hydrogen. We explored the hypothesis that an integrated wind-hydrogen system supplying electricity, heat, and transportation fuel could serve the needs of an isolated (off-grid) Alaska community at a lower cost than a collection of separate systems. Analysis indicates that: 1) Combustible Hydrogen could be produced with current technologies for direct use as a transportation fuel for about $15/gallon-equivalent; 2) The capital cost of the wind energy rather than the capital cost of electrolyzers dominates this high cost; and 3) There do not appear to be diseconomies of small scale …

Ontology Generation, Information Harvesting And Semantic Annotation For Machine-Generated Web Pages, Cui Tao

Theses and Dissertations

The current World Wide Web is a web of pages. Users have to guess possible keywords that might lead through search engines to the pages that contain information of interest and browse hundreds or even thousands of the returned pages in order to obtain what they want. This frustrating problem motivates an approach to turn the web of pages into a web of knowledge, so that web users can query the information of interest directly. This dissertation provides a step in this direction and a way to partially overcome the challenges. Specifically, this dissertation shows how to turn machine-generated web …

Characterization Of The Thermal Transport Through A Temporally-Varying Ash Layer, Darron Palmer Cundick

Theses and Dissertations

Ash deposits in commercial coal-fired boilers frequently pose serious maintenance challenges and decrease thermal efficiency. A better understanding of fundamental thermal transport properties in ash deposits can help mitigate their negative effects. In order to characterize the thermal properties of boiler-side deposits, this work presents a thermal transport model and in-situ measurements of effective thermal conductivity in coal ash deposits. A simple model of the thermal transport through an ash deposit, with and with out slagging, was developed. The model approximates the deposit by dividing it into four regimes: particulate, sintered, solidified slag, and molten slag. The development of this …

Synthesis, Structure And Magnetic Properties Of Oxy-Anion Based Magnetic Solids Containing Transition Metal Oxide Nanostructures, Kulugammana Gedera Ranmohotti

All Dissertations

Inline with the focus of our research, my goal for this dissertation study is to further explore new classes of magnetic insulators exhibiting novel properties. The scope of this work is twofold: 1) the exploratory synthesis of polyanion-based mixed-framework compounds containing transition metal oxide magnetic nanostructures, and 2) the investigation of the structure/property correlation with respect to the spin couplings in confined lattices. These studies are of fundamental and technological importance regarding the long-term development of low-dimensional magnetic solids for device applications in especially information storage and quantum computing. Several interesting and significant transition metal based silicate, phosphate arsenate and …

The Effects Of Scale And Spatial Heterogeneities On Diffusion In Volcanic Breccias And Basalts: Amchitka, Alaska, Jennifer Lyn Benning

Engineering

Aqueous phase diffusion of molecules in fractured crystalline rock can play a dominant role in the fate and transport of contaminants, particularly if advective flows are very slow. The importance of the role of diffusion, typically a very slow process, also becomes an important mechanism to consider if the contaminants are long-lived in the subsurface, and thus their fate and transport must be considered over very long time-scales. Owing to the inherently heterogeneous nature of the subsurface, quantification of diffusive transport in the subsurface is extremely complex. The main objective of this study was to investigate the effects of the …

Measurement Of Rheological And Thermal Properties And The Freeze-Thaw Characteristics Of Nanofluids, Bhaskar C. Sahoo

Engineering

"This research investigates the rheological and thermal properties and the freeze-thaw characteristics of nanofluids. Nanofluids are dispersions of nano-scale particles (<100 nm) in a base fluid such as water, ethylene glycol, propylene glycol or a mixture of more than one fluid. In cold regions, a mixture of 60% ethylene glycol in water by mass (60:40 EG/W) is normally used as the heat transfer fluid due to its low freezing point. Rheological properties of aluminum oxide nanofluid in the 60:40 EG/W base fluid were investigated and new correlations, expressing viscosity as a function of temperature and particle concentration, were developed. Results from the specific heat experiments on zinc oxide nanofluid in the 60:40 EG/W were compared with available correlations and a new model was developed. The thermal conductivity of silicon dioxide nanofluid in a 60:40 EG/W was measured and compared with existing models, considering the Brownian motion of nanoparticles. A new correlation, expressing thermal conductivity as a function of particle concentration, size, base fluid properties and temperature, was proposed by improving an existing model. Freeze-thaw characteristics of copper oxide nanoparticle dispersions in water were studied for a single freeze-thaw cycle. The freezing rate, agglomeration of nanoparticles and the effect on the freezing point of nanofluid were examined"--Leaf iii

Determination Of Minimum Miscibility Pressure Using Vanishing Interfacial Tension In Support Of Alaska North Slope Heavy Oil Development, Vinit Santosh Tathed

Engineering

"Developing Alaskan heavy oils resources has become necessary as, the production from light oil fields in Alaska's North Slope (ANS) is on the decline. Due to the extremely viscous nature of these heavy oils, they are hard to produce by natural pressure. Miscible gas injection Enhanced Oil Recovery (EOR) can be one of the methods for production of these heavy oils. Minimum miscibility pressure (MMP) is an important optimization parameter for EOR processes involving CO₂ or hydrocarbon gas injection. The MMP for a gas-oil system is directly related to the interfacial tension between the injected gas and the reservoir crude …

An Engineering Study To Investigate The Methane Hydrate Resource Potential Associated With The Barrow Gas Fields In Alaska, Praveen Kumar Singh

Engineering

"Previous studies on the Barrow Gas Fields (BGF) in Alaska have suggested that accumulations of natural gas hydrates could exist within these reservoirs. In consideration of future energy challenges, and the potential of gas hydrates in meeting them, a comprehensive engineering study was undertaken to investigate the BGF for hydrates, and to recommend an optimal plan for future field development. The methane hydrate resource potential of the BGF, viz. the East Barrow (EB), South Barrow (SB), and Walakpa (WAL) gas pools, was analyzed by developing gas hydrate stability models. Material balance studies were performed on the EB gas field to …

New Area Legislators – Introduction To Wmu, John M. Dunn

WMU President John Dunn

No abstract provided.

Ceas E-News 12.16.2008, College Of Engineering And Applied Sciences

College of Engineering and Applied Sciences News

CEAS students and RoboBronco join the cast of feature-film Cherry

Green And High Performance Factory Crafted Housing, Florida Solar Energy Center, Stephanie Thomas-Rees

FSEC Energy Research Center®

In the U.S., factory-built housing greater than 400 square feet is built either to the U.S. Department of Housing and Urban Development (HUD) code for mobile homes or site-built codes for modular housing. During the last few years, as the production of HUD code housing has dwindled, many leading edge factory builders have started building modular homes to compete with site-built housing and stay in business. As part of the Building America Industrialized Housing Partnership (BAIHP) we have assisted in the design and construction of several 'green' and high performance modular homes that Palm Harbor Homes, Florida Division (PHH) has …

Nanoantenna Array-Induced Fluorescence Enhancement And Reduced Lifetimes, Reuben M. Bakker, V. P. Drachev, Zhengtong Liu, Hsiao-Kuan Yuan, Rasmus H. Pedersen, Alexandra Boltasseva, Jiji Chen, Joseph Irudayaraj, Alexander V. Kildishev, V. M. Shalaev

Birck and NCN Publications

Enhanced fluorescence is observed from dye molecules interacting with optical nanoantenna arrays. Elliptical gold dimers form individual nanoantennae with tunable plasmon resonances depending upon the geometry of the two particles and the size of the gap between them. A fluorescent dye, Rhodamine 800, is uniformly embedded in a dielectric host that coats the nanoantennae. The nanoantennae act to enhance the dye absorption. In turn, emission from the dye drives the plasmon resonance of the antennae; the nanoantennae act to enhance the fluorescence signal and change the angular distribution of emission. These effects depend upon the overlap of the plasmon resonance …

Marriage Of Arts And Technology

News Releases

No abstract provided.

The Alestle - Vol. 61 No. 32 - 12/16/2008, Southern Illinois University Edwardsville

The Alestle

Vol. 61 No. 32

Meeting Transcript Of The Federal Open Market Committee On December 15-16, 2008, Federal Reserve System: Board Of Governors: Federal Open Market Committee (Fomc)

Documents

No abstract provided.

The Bg News December 16, 2008, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. December 16, 2008. Volume 99-Issue 74.

Integrated Approach To Airborne Laser Communication, James A. Louthain

Theses and Dissertations

Lasers offer tremendous advantages over RF communication systems in bandwidth and security, due to their ultra-high frequency and narrow spatial beamwidth. Atmospheric turbulence causes severe received power variations and high bit error rates (BERs) in airborne laser communication. Airborne optical communication systems require special considerations in size, complexity, power, and weight. Conventional adaptive optics systems correct for the phase only and cannot correct for strong scintillation, but here the two transmission paths are separated sufficiently so that the strong scintillation is \averaged out" by incoherently summing up the two beams in the receiver. This requisite separation distance is derived for …

Instruction Statistics Proposal, Mark Emmons

Assessment and Statistics

Proposal for design of customized library instruction statistics gathering web application.

A Modeling And Spatio-Temporal Analysis Framework For Monitoring Environmental Change Using Npp As An Ecosystem Indicator, Robert Crabtree, Christopher Potter, Randall Mullen, Jennifer Sheldon, Shengli Huang, Joshua Harmsen, Ann Rodman, Cathie Jean

United States National Aeronautics and Space Administration: Publications

We present and describe a modeling and analysis framework for monitoring protected area (PA) ecosystems with net primary productivity (NPP) as an indicator of health. It brings together satellite data, an ecosystem simulation model (NASA–CASA), spatial linear models with autoregression, and a GIS to provide practitioners a low-cost, accessible ecosystem monitoring and analysis system (EMAS) at landscape resolutions. The EMAS is evaluated and assessed with an application example in Yellowstone National Park aimed at identifying the causes and consequences of drought. Utilizing five predictor covariates (solar radiation, burn severity, soil productivity, temperature, and precipitation), spatio-temporal analysis revealed how landscape controls …

Sub-Circuit Selection And Replacement Algorithms Modeled As Term Rewriting Systems, Eric D. Simonaire

Theses and Dissertations

Intent protection is a model of software obfuscation which, among other criteria, prevents an adversary from understanding the program’s function for use with contextual information. Relating this framework for obfuscation to malware detection, if a malware detector can perfectly normalize a program P and any obfuscation (variant) of the program O(P), the program is not intent protected. The problem of intent protection on programs can also be modeled as intent protection on combinational logic circuits. If a malware detector can perfectly normalize a circuit C and any obfuscation (variant) O(C) of the circuit, the circuit is not intent protected. In …

Incentives For Orphan Drug Research And Development In The United States, Enrique Seoane-Vazquez, Rosa Rodriguez-Monguio, Sheryl L. Szeinbach, Jay Visaria

Pharmacy Faculty Articles and Research

Background: The Orphan Drug Act (1983) established several incentives to encourage the development of orphan drugs (ODs) to treat rare diseases and conditions. This study analyzed the characteristics of OD designations, approvals, sponsors, and evaluated the effective patent and market exclusivity life of orphan new molecular entities (NMEs) approved in the US between 1983 and 2007.

Methods: Primary data sources were the FDA Orange Book, the FDA Office of Orphan Drugs Development, and the US Patent and Trademark Office. Data included all orphan designations and approvals listed by the FDA and all NMEs approved by the FDA during …

12/15/2008 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 12/15/2008. Scroll down to see the names and obituary description.