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2007

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Short-Wavelength Light Sensitivity Of Circadian, Pupillary, And Visual Awareness In Humans Lacking An Outer Retina, Farhan H. Zaidi, Joseph T. Hull, Stuart N. Peirson, Katharina Wulff, Daniel Aeschbach, Joshua J. Gooley, George C. Brainard, Kevin Gregory-Evans, Joseph F. Rizzo Iii, Charles A. Czeisler, Russell G. Foster, Merrick J. Moseley, Steven W. Lockley Dec 2007

Short-Wavelength Light Sensitivity Of Circadian, Pupillary, And Visual Awareness In Humans Lacking An Outer Retina, Farhan H. Zaidi, Joseph T. Hull, Stuart N. Peirson, Katharina Wulff, Daniel Aeschbach, Joshua J. Gooley, George C. Brainard, Kevin Gregory-Evans, Joseph F. Rizzo Iii, Charles A. Czeisler, Russell G. Foster, Merrick J. Moseley, Steven W. Lockley

Department of Neurology Faculty Papers

As the ear has dual functions for audition and balance, the eye has a dual role in detecting light for a wide range of behavioral and physiological functions separate from sight. These responses are driven primarily by stimulation of photosensitive retinal ganglion cells (pRGCs) that are most sensitive to short-wavelength ( approximately 480 nm) blue light and remain functional in the absence of rods and cones. We examined the spectral sensitivity of non-image-forming responses in two profoundly blind subjects lacking functional rods and cones (one male, 56 yr old; one female, 87 yr old). In the male subject, we found …

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Cognitive Functioning, Immune Functioning, And Disease Progression In Perinatally Infected Hiv+ School-Aged Children On Highly Active Anti Retroviral Therapy, Erin Theresa O'Callaghan Dec 2007

Cognitive Functioning, Immune Functioning, And Disease Progression In Perinatally Infected Hiv+ School-Aged Children On Highly Active Anti Retroviral Therapy, Erin Theresa O'Callaghan

Open Access Dissertations

This study is one of the only investigations to examine the complex inter-relationships between immune status, cognitive functioning, and disease progression in school-aged, perinatally infected, HIV+ children on HAART over time and is the first to conduct long-term follow-up assessments beyond one year after initiating HAART. Previous research has shown that HIV+ children on HAART show stability in cognitive functioning for up to one year. The current study investigated cognitive functioning, as measured by the Wechsler Intelligence Scale for Children -III, as a function of immune functioning and disease progression over time in this sample. Overall, results showed that PIQ …

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The Dose-Response Of Maternal Exercise Volume On Newborn And Placental Outcomes, Melisa A. Mena Dec 2007

The Dose-Response Of Maternal Exercise Volume On Newborn And Placental Outcomes, Melisa A. Mena

Open Access Dissertations

Current ACOG guidelines recommend exercise during a low-risk pregnancy for 30 minutes on most, if not all days of the week. However, little is known about how the volume of exercise performed during pregnancy affects fetoplacental size. In addition, the confounding effects of maternal nutrient intake and weight gain, and how they interact with exercise volume to influence fetoplacental size have not been appropriately addressed. Therefore, the purpose of this study was to examine the effects of varying maternal exercise volumes on neonatal birthweight and placental volume, while addressing the influence of maternal nutrient intake and weight gain. Subjects evaluated …

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Centerpoint Director Named Influential Woman In Business, Office Of Public Affairs Dec 2007

Centerpoint Director Named Influential Woman In Business, Office Of Public Affairs

Press Releases

Hilary Burkinshaw, Director of The CenterPoint for Entrepreneurs at Governors State University, was recently honored by the Business Ledger, a regional business publication and the National Association of Women Business Owners Chicago Area Chapter as one of the area’s Influential Women in Business.

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Reyes V. Atty Gen Usa Dec 2007

Reyes V. Atty Gen Usa

2007 Decisions

USDC for the Middle District of Pennsylvania

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Powers V. Comm Irs Dec 2007

Powers V. Comm Irs

2007 Decisions

USDC for the District of New Jersey

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Equation Of State Model Development And Compositional Simulation Of Enhanced Oil Recovery Using Gas Injection For The West Sak Heavy Oil, Ganesh G. Morye Dec 2007

Equation Of State Model Development And Compositional Simulation Of Enhanced Oil Recovery Using Gas Injection For The West Sak Heavy Oil, Ganesh G. Morye

Engineering

West Sak oil field, with its very huge reserves of heavy oil, has the potential of supplementing the declining light oil production on the Alaska North Slope. Due to the heavy nature of oil, its phase behavior is very complex. A proper understanding of the phase behavioral changes of the West Sak oil is crucial to design any enhanced oil recovery scheme. Such Enhanced Oil Recovery (EOR) techniques are essential in the absence of natural drive mechanisms in these reservoirs. For the proper selection of any EOR technique, reservoir simulation studies should prove its viability. Accordingly, a complete phase behavior …

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Investigation Of Phase Behavior And Reservoir Fluid Properties In Support Of Enhanced Oil Recovery Of Alaska North Slope (Ans) Viscous Oils, Kaustubh D. Alurkar Dec 2007

Investigation Of Phase Behavior And Reservoir Fluid Properties In Support Of Enhanced Oil Recovery Of Alaska North Slope (Ans) Viscous Oils, Kaustubh D. Alurkar

Engineering

Declining light oil production on Alaska North Slope (ANS) has attracted oil producers to develop viscous oil resources of ANS that range between 20 to 25 billion barrels. These oils are viscous, flow sluggishly in the formations, and are difficult to transport through unconsolidated formations and are hard to produce by conventional methods. Viscous oil recovery entails neatly designed enhanced oil recovery processes and the success of these processes is critically dependent on accurate knowledge of phase behavior and fluid properties of these oils under variety of pressure and temperature conditions. An experimental study was conducted to quantify the phase …

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Tutor Strategies In Face-To-Face And Distance Tutorial Sessions: Tutor And Student Perceptions, Carrie L. Aldrich Dec 2007

Tutor Strategies In Face-To-Face And Distance Tutorial Sessions: Tutor And Student Perceptions, Carrie L. Aldrich

Linguistics

As university populations become increasingly dependent on distance learning and support services for distance learning, writing centers progressively offer services by telephone, email, or virtual worlds in addition to the traditional face-to-face tutorials. The University of Alaska Fairbanks (UAF) Writing Center offers a "telephone tutorial" service for students from remote locations who fax their papers to a tutor who then conducts a tutorial session over the telephone. This study investigates tutor strategies in face-to-face and telephone tutorial sessions and tutor and student perceptions of effectiveness. I audio recorded 30 tutorial sessions with five tutors in six sessions each, half in …

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Froth Flotation Characterization And Processing Plant Design For The Platiniferous And Auriferous Marine Sediments Of Southwestern Alaska, Charles Bissue Dec 2007

Froth Flotation Characterization And Processing Plant Design For The Platiniferous And Auriferous Marine Sediments Of Southwestern Alaska, Charles Bissue

Engineering

The purpose of this study was to characterize, and investigate the beneficiation of, the platiniferous and auriferous marine sediments of Southwestern Alaska, located near Platinum, Alaska. The majority of placer gold particles are contained in the 50 x 150 mesh size fraction, while the platinum is finer, residing in the 100 x 200 mesh size fraction. Liberated placer gold and placer platinum group metals (PGM) particles are visible to the naked eye and readily observed under a binocular microscope. Preliminary, qualitative microprobe analysis of PGM grains from the flotation concentrate showed grains of nearly pure iridium, isoferroplatinum and Pt-Rh-Ir-Fe-S-As mineralogy. …

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Modeling Of Wax Precipitation, Amit Y. Bhangale Dec 2007

Modeling Of Wax Precipitation, Amit Y. Bhangale

Engineering

Due to increasing oil demand, oil companies are moving into deep water and arctic environments for oil production. In these regions, due to lower temperature, wax starts depositing when the temperature in wellbore falls below Wax Appearance Temperature (WAT). This leads to reduced production rates and larger pressure drops. Wax problems in production wells are very costly due to production down time and removal of wax. Therefore, it is necessary to develop the solution to overcome wax deposition. Wax precipitation is one of the most important phenomena in wax deposition, and hence, it needs to be modeled. There are various …

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December 17, 2007 Reporter, University Of Alabama At Birmingham Dec 2007

December 17, 2007 Reporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

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From Twisted Supersymmetry To Orbifold Lattices, Simon Catterall Dec 2007

From Twisted Supersymmetry To Orbifold Lattices, Simon Catterall

Physics - All Scholarship

We show how to derive the supersymmetric orbifold lattices of Cohen et al. \cite{Cohen:2003xe,Cohen:2003qw} and Kaplan et al. \cite{Kaplan:2005ta} by direct discretization of an appropriate twisted supersymmetric Yang-Mills theory. We examine in detail the four supercharge two dimensional theory and the theory with sixteen supercharges in four dimensions. The continuum limit of the latter theory is the well known Marcus twist of {\cal N}=4 Yang-Mills. The lattice models are gauge invariant and possess one exact supersymmetry at non-zero lattice spacing.

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A Multi-Proxy Approach To Determine Paleoecological Change Of Mangroves, During The Holocene, In Belize, Central America, Natalie Marie Monacci Dec 2007

A Multi-Proxy Approach To Determine Paleoecological Change Of Mangroves, During The Holocene, In Belize, Central America, Natalie Marie Monacci

Marine Biology

This thesis presents multiple analyses of mangrove peat cores from Spanish Lookout Cay (BT - 79) and from along the banks of the Sibun River (SR-63), Belize to examine ecosystem responses to environmental change during the Holocene. Radiocarbon measurements showed these sites were colonized by mangroves ~8,000 cal. yrs BP and have decreased sedimentation rates from ~6,000 to ~1,000 cal. yrs BP, which is attributed to a decrease in sea-level inundation. Core SR-63 has a change in lithology from primarily mangrove peat to fluvial material at 2,500 cal. yrs BP, which is attributed to erosion inputs of the drainage basin. …

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Habitat Use Of Pacific Herring (Clupea Pallasii) In Prince William Sound, Alaska, Seanbob R. Kelly Dec 2007

Habitat Use Of Pacific Herring (Clupea Pallasii) In Prince William Sound, Alaska, Seanbob R. Kelly

Marine Biology

To determine the spawning area contributions of Pacific herring (Clupea pallashii) larvae to nursery bays, otolith chemical analysis was conducted on juvenile fish collected from 1995 to 1997 in Prince William Sound, Alaska. The otolith edge, representing the chemical signature of the known capture location, and the otolith core, representing the unknown spawning ground chemistry, were compared with discriminant function analysis to infer spawning area origin. Chemical signatures of ⁸⁷Sr/⁸⁶Sr, ⁸⁸Sr/⁴⁸Ca, ²⁴Mg/⁴⁸Ca, and ¹³⁸Ba/⁴⁸Ca were used to identify broad spawning regions from inner and outer PWS that persisted for the three years sampling period despite significant interannual variability in otolith …

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Rhinoceros Auklet Developmental Responses To Moderate Food Restriction, Justine Sears Dec 2007

Rhinoceros Auklet Developmental Responses To Moderate Food Restriction, Justine Sears

Biological Sciences

Seabird nestlings are vulnerable to food restriction because their parents may not buffer them from prey shortages. I conducted a captive study to explore how rhinoceros auklet chicks (Cerorhinca monocerata) may cope with food restriction and avoid long-term fitness consequences. I predicted auklet nestlings would be adapted to moderate levels of food-stress, and investigated how morphological allocation, glucocorticoid stress response, and fledging behavior change under conditions of a 50% calorie restriction. I also investigated effects of growth and food restriction on carbon and nitrogen stable isotope ratios ([delta]¹³C and [delta]¹⁵N) in auklet tissues. I found that food-restricted auklets allocated resources …

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The Distribution And Phylogeography Of The Alaska Marmot (Marmota Broweri), Aren M. Gunderson Dec 2007

The Distribution And Phylogeography Of The Alaska Marmot (Marmota Broweri), Aren M. Gunderson

Biological Sciences

The taxonomic and distributional status of the Marmota broweri has been the subject of much debate and confusion since it was first described as a subspecies of the hoary marmot (M caligata). Through a review of all museum specimens, published accounts of this species, field surveys, and the identification of previously unidentified marmot specimens we have determined the current distribution of the Alaska marmot to include the Brooks Range, the Ray Mountains, and the Kokrines Hills of northern Alaska. The Yukon River forms the boundary between the peripatric distributions of M broweri and M caligata in Alaska. Since M broweri …

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Development And Optimization Of A Reconfigurable Telemetry System For Sounding Rocket Payloads, Niladri Si Dec 2007

Development And Optimization Of A Reconfigurable Telemetry System For Sounding Rocket Payloads, Niladri Si

Engineering

This thesis addresses the development of a flight-ready telemetry encoder for the Alaska Student Rocket Project (ASRP) sounding rocket payload. The Frame Oriented eXpandable Integrated circuit Encoder-2007 (FOXIE-07) was developed to resolve crosstalk, timing, and thermal issues in the original FOXIE-03 encoder prototype. A pre-modulation low-pass filter was implemented between the encoder and the FM transmitter to minimize undesired sidebands from the transmitted signal. Complete testing of the FOXIE-07 encoder and pre-modulation filter was performed to certify them as flight-ready components for the SRP5 payload launch from Poker Flat Research Range in 2009.

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Chemical And Microbial Characterization Of North Slope Viscous Oils For Meor Application, Ashish L. Ghotekar Dec 2007

Chemical And Microbial Characterization Of North Slope Viscous Oils For Meor Application, Ashish L. Ghotekar

Engineering

Viscous oil reservoirs tend to be low-energy, low-gas/oil-ratio systems with high viscosities and are difficult to produce, transport and refine by conventional methods. Some of the commonly considered viscous oil recovery methods include processes such as steam flooding, in-situ combustion and miscible gas injection. The large viscous oil deposits in the ANS cannot be produced entirely by conventional methods like pressure displacement or waterflooding. Other methods such as miscible (gas injection and water alternating gas (WAG) also have limited success. Microbial enhanced oil recovery (MEOR) is one of the techniques for improving the oil recovery for viscous deposits. This method …

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Experimental Investigation Of Low Salinity Enhanced Oil Recovery Potential And Wettability Characterization Of Alaska North Slope Cores, Shivkumar B. Patil Dec 2007

Experimental Investigation Of Low Salinity Enhanced Oil Recovery Potential And Wettability Characterization Of Alaska North Slope Cores, Shivkumar B. Patil

Engineering

Rock wettability and the chemical properties of the injection water influence fluid distribution and multiphase fluid flow behavior in petroleum reservoirs and hence it consequently affects the final residual oil saturation. Many researchers have proven that oil recovery is increased by decreasing the salinity of water used for waterflooding process. Three sets of experiments were conducted on representative Alaska North Slope (ANS) core samples to experimentally ascertain the influence of injected brine/fluid composition on wettability and hence on oil recovery in secondary oil recovery mode. All the sets of experiments examined the effect of brine salinity variation on wettability and …

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The Effect Of Temperature On Circulating Levels Of Methyl Farnesoate And Ecdysteroid Hormones In Female Snow Crab Chionoecetes Opilio, From The Bering Sea, Jacqueline Loretta Mitchell Dec 2007

The Effect Of Temperature On Circulating Levels Of Methyl Farnesoate And Ecdysteroid Hormones In Female Snow Crab Chionoecetes Opilio, From The Bering Sea, Jacqueline Loretta Mitchell

Fisheries

Methyl farnesoate, a reproductive hormone in crustaceans, was detected for the first time in the hemolymph of female Chionoecetes opilio. Ovigerous crabs were maintained at -1,0, 1, and 3° C to represent near bottom temperatures of the Bering Sea, throughout a reproductive cycle to assess changes, and temperature effects, in hormone levels associated with ovarian maturation, hatching and subsequent extrusion of the next clutch. Methyl farnesoate (MF) levels did not change significantly in any treatment throughout the duration of egg incubation. Levels of MF significantly decreased in crabs exposed to -1 and 0° C when initial versus post extrusion levels …

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Analysis And Comparison Of Age-Structured Assessment Models For Two Pacific Herring Populations, Peter-John F. Hulson Dec 2007

Analysis And Comparison Of Age-Structured Assessment Models For Two Pacific Herring Populations, Peter-John F. Hulson

Fisheries

Substantial research has been devoted to identify causes for decline the of Prince William Sound (PWS) Pacific herring in the early 1990's because of the proximity to the 1989 Exxon Valdez oil spill (EVOS). A potential source for decline has been identified with the isolation of disease in the PWS population. There have been limited investigations of PWS Pacific herring population dynamics related to other stocks in the Gulf of Alaska. The objective of this thesis was to compare observations and age-structured assessment (ASA) model results between PWS and Sitka Sound Pacific herring. Data conflicts were evaluated in the PWS …

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Landscape Modeling Of Threespine Stickleback Occurrence In Small Southeast Alaska Lakes, Dave Gregovich Dec 2007

Landscape Modeling Of Threespine Stickleback Occurrence In Small Southeast Alaska Lakes, Dave Gregovich

Fisheries

Although threespine stickleback (Gasterosteus aculeatus L) are known to inhabit a wide range of habitats, their distribution in lakes across Southeast Alaska is not known. Threespine stickleback are an important prey item for many consumers in freshwater ecosystems. Additionally, isolated populations may be genetically unique and thus important from a conservation perspective. This study focused on identifying' landscape factors and models useful in predicting the presence of threespine stickleback in small (0.5-5 ha) lakes of Southeast Alaska. Stickleback occurrence was assessed via snorkeling and minnow trapping in 54 lakes, which were divided into calibration (n=36) and prediction (n=18) data sets. …

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Climate And Predictability Of Alaska Wildfires, Peter A. Bieniek Dec 2007

Climate And Predictability Of Alaska Wildfires, Peter A. Bieniek

Atmospheric Sciences

Wildfires burn an average of 3,760km² each year in Alaska, but varies greatly from year to year. These fires, started by human and natural causes, can endanger life and property when they approach populated areas. The relationship between seasonal area burned and monthly and seasonal average mean sea level pressure, surface air temperature, total column precipitable water, 500hPa and 700hPa geopotential height, 700hPa specific humidity and 1000-500hPa layer thickness is examined. The assessment was done by examining the spring and summer seasonal composites associated with extreme high and low seasons. This showed the predominant anomalies from the climatology for seasons …

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The Effect Of Medical Libraries On Medical Education: Evidence From Osun State, Nigeria, Gboyega Adio, M. A. Akewukereke, Samual Olukayode Ibitoy Ibitoye Dec 2007

The Effect Of Medical Libraries On Medical Education: Evidence From Osun State, Nigeria, Gboyega Adio, M. A. Akewukereke, Samual Olukayode Ibitoy Ibitoye

Library Philosophy and Practice (e-journal)

The study assesses the affect of medical libraries on medical education. It explains vividly, the various constituents connected with value and effectiveness of information to medical practitioners, what to do and what doing them will mean in qualitative terms. In carrying out the research, a survey was conducted through the use of a self developed 24-item questionnaire which tried to improve ways of accessing, assessing and communicating information effectively through strategic planning, statistical measurement, personnel appraisal and budgeting. The finding revealed that medical libraries are playing relevant and statutory roles in their various institutions. This is in spite of the …

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Argon Isotopes And Geochemistry Of El ChichóN Volcano, Chiapas, Mexico, Daniel A. Jones Dec 2007

Argon Isotopes And Geochemistry Of El ChichóN Volcano, Chiapas, Mexico, Daniel A. Jones

Geosciences

Argon isotope systematics can be highly insightful for the investigation of magmatic processes, as the isotopic ratios of different terrestrial reservoirs vary greatly and argon diffuses rapidly at magmatic temperatures. In an effort to understand the dynamics of argon systematics in volcanic systems, the major phases of the eruptive products of EI Chichón volcano were subjected to argon isotopic and bulk chemical analysis. While glass analyses were typically atmospheric in composition, phenocrysts display variation in both concentration and isotopic composition, both within and between the eruptive units, with a major change in behavior noted around 1500 YBP. This same event …

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Deafdigest: Gold Edition, December 16, 2007, Barry Strassler Dec 2007

Deafdigest: Gold Edition, December 16, 2007, Barry Strassler

DeafDigest Gold 2007

No abstract provided.

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Backbone Of Classroom Instruction, Bilqees Patel Dec 2007

Backbone Of Classroom Instruction, Bilqees Patel

Institute for Educational Development, Karachi

No abstract provided.

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The Eagleville Times,Volume 5, Issue 24, Debbie Ryan Dec 2007

The Eagleville Times,Volume 5, Issue 24, Debbie Ryan

Eagleville Times

No abstract provided.

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December 15, 2007 (Pages 6503-6730), Pennsylvania Legislative Reference Bureau Dec 2007

December 15, 2007 (Pages 6503-6730), Pennsylvania Legislative Reference Bureau

Volume 37 (2007)

No abstract provided.

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