Digital Commons Network^™

Halonitromethane Treatment Using Advanced Oxidation Process: Rates, Mechanisms And Kinetic Modeling, Stuart Kirkham Cole

Civil & Environmental Engineering Theses & Dissertations

Halonitromethanes (HNMs) are low molecular weight halogenated disinfection-by-products (DBPs) found to be formed during ozonation, chlorination, or chloramination of waters containing natural bromide ion and nitrogenous organic matter. This work identifies the absolute rate constants for the oxidative hydroxyl radical (•OH) and reductive hydrated electron e^- _aq extinction of HNM compounds. Three forms of HNMs included in this study are the chlorinated, brominated, and mixed halogenated compounds. Electron pulse radiolysis and transient absorption spectroscopy were used to measure •OH and e^- _aq radical absolute reaction rate constants for a total of nine HNMs. To elucidate the decomposition reaction …

Regulation Of Sparc Gene Expression By The Activator Protein 1 Transcription Factor, Joseph William Briggs

Theses and Dissertations in Biomedical Sciences

Overexpression of the c-Jun proto-oncogene in MCF7 breast cancer cells results in a variety of phenotypic changes related to malignant progression including a shift to estrogen independent growth, increased cell motility and invasion. Concurrent with these phenotypic changes are alterations to cellular gene expression patterns. One gene that becomes highly upregulated is SPARC (secreted protein acidic and rich in cysteine). Increased SPARC expression is associated with malignant progression in a variety of different cancers, although little is known regarding the mechanisms of SPARC gene regulation. Therefore, the objectives of this study were: (1) to determine the mechanisms by which c-Jun …

Tumor Response Tcf-4/Β-Catenin Regulatory Elements For Enhancing Cancer Gene Therapies, Saurabh Kumar Gupta

Theses and Dissertations in Biomedical Sciences

Mutations in the adenomatous polyposis coli gene are frequently associated with progression of colon carcinoma and most other types of epithelial carcinomas. This usually results in stabilization of β-catenin protein levels, followed by transactivation of Tcf-4/β-catenin responsive genes. The effectiveness of a Tcf-4/β-catenin transcriptional enhancer element in combination with a c-fos or carcinoembryonic antigen promoter was tested for its ability to act as a tumor specific regulator of gene expression in a panel of human tumor and normal cell lines. Luciferase reporter assays indicated enhanced activity of the Tcf-4/β-catenin transcriptional element only in tumor cell lines, with minimal activities in …

Transport Of The Harmful Bloom Alga Aureococcus Anophagefferens By Oceangoing Ships And Coastal Boats, Martina A. Doblin, Linda C. Popels, Kathryn J. Coyne, David A. Hutchins, S. Craig Cary, Fred C. Dobbs

OES Faculty Publications

It is well established that cyst-forming phytoplankton species are transported in ships' ballast tanks. However, there is increasing evidence that other phytoplankton species which do not encyst are also capable of surviving ballast transit. These species have alternative modes of nutrition (hetero- or mixotrophy) and/or are able to survive long-term darkness. In our studies of no-ballast-on-board vessels arriving in the Great Lakes, we tested for the presence of the harmful algal bloom species Aureococcus anophagefferens (brown tide) in residual (i.e., unpumpable) ballast water using methods based on the PCR. During 2001, the brown tide organism was detected in 7 of …

Correction [To Maurakis And Grimes Article, V. 54, #3&4]

Virginia Journal of Science

This page is a correction to an article by Eugene G. Maurakis and David V. Grimes: Predicting Fish Species Diversity in Lotic Freshwaters of Greece, published in Virginia Journal of Science Volume 54, numbers 3 and 4. Amended table 2a owed to a printing corruption.

Subterranean Loss And Gain Of Water In Mountain Lake, Virginia: A Hydrologic Model, Martin Jansons, Bruce C. Parker, Jacob E. Waller

Virginia Journal of Science

Mountain Lake, Virginia is a small, unique, oligotrophic, subalpine ecosystem in the southern Appalachians. Previous studies have disclosed that this lake has manifested periodic prolonged low water levels during the several thousand years of its existence. The most recent low water level occurred during the drought years of 1999-2002. Measurements of lake level, precipitation, and other meteorological data including calculated evapotranspiration in the lake basin from 2/19/02 to 8/31/03 have enabled estimation of net subterranean water losses presumably through cracks between Clinch sandstone boulders and/or the recently discovered deep hole at the northwest end of Mountain Lake. These net losses …

Circulation, Vol. 11, No. 3, Center For Coastal Physical Oceanography, Old Dominion University, Robert E. Tuleya

CCPO Circulation

Fall 2004 issue of CCPO Circulation featuring article "Impact of CO(2)-induced Warming on Simulated Hurricane Intensity and Precipitation" by Robert E. Tuleya

Abstracts Of Papers, 82nd Annual Meeting Of The Virginia Academy Of Science, 2004

Virginia Journal of Science

Abstracts of papers presented at the 82nd Annual Meeting of the Virginia Academy of Science on May 26-28th, 2004, Virginia Commonwealth University, Richmond, Virginia.

Virginia Junior Academy Of Science 2004 Award Winners

Virginia Journal of Science

Virginia Junior Academy of Science 2004 Awards were presented at Virginia Commonwealth University, Richmond, VA, May 27, 2003. Includes Special Awards and Election Results.

Nest-Building And Spawning Behaviors In Nocomis Effusus (Actinopterygii: Cyprindae), Eugene G. Maurakis, George E. Maurakis

Virginia Journal of Science

Spawning behavior in Nocomis effusus is described from direct observations and review of videotapes made in Yellow Creek (Cumberland River drainage), Tennessee in 2003. Nest construction (i.e., excavating a concavity, forming a platform, and building a mound), and spawning behavior in N. effusus where a single breeding male excavates a pit and spawns with females on the upstream slope of his nest is like that described for Nocomis asper and Nocomis biguttatus. In digging a spawning pit, a male N. effusus reshapes and reorganizes substrate materials that results in spawning areas on the upstream slope of the nest composed …

Vas Best Student Paper Awards

Virginia Journal of Science

List of the Best Student Paper Awards by section from the 2004 Virginia Academy of Science Annual Meeting.

Benthic Biological Monitoring Program Of The Elizabeth River Watershed (2003), Daniel M. Dauer

Elizabeth River Reports

Executive Summary

Macrobenthic communities of the Elizabeth River watershed have been quantitatively sampled since summer 1999. This report presents the data from the fifth year of sampling in 2003. The three objectives of the Benthic Biological Monitoring Program of the Elizabeth River watershed are: (1) To characterize the health of the tidal waters of the Elizabeth River watershed as indicated by the structure of the benthic communities. ( 2) To conduct trend analyses on long-term data at 14 fixed-point stations to relate temporal trends in the benthic communities to changes in water and/or sediment quality. Trend analyses will be updated …

On Thacker's Biomedia (2004), Nicholas Ruiz Iii

Reconstruction: Studies in Contemporary Culture

[First paragraph]

Only we could have done it. The Code (DNA and its analogs, etc.) that we perhaps only narrate, never forgetting all of the fictions that narration portends, today consciously edits the text that evolution has edited unconsciously for eons. Thacker considers how humans -- perhaps little more than interactive Code, manipulate the Code -- with the technology of the Code. No other faction of Code has yet to make such heady ‘gains.’ Where posthumanity was always a literary endeavor, a literary bypass, out of instrumental science and into fictive states, it now is a technical endeavor, encompassing a …

Portals To Knowledge: Confluence And Conflict Between Enlightenment And Postmodern Currencies, Benjamin G. Lanier-Nabors

Reconstruction: Studies in Contemporary Culture

[Editors' Introduction]

In order to provide any viable critique of twenty-first-century discourses -- whether signified by late capitalism, epistemological hegemony, cultural domination, or globalization (the catch-word for all of these) -- one must not employ an ahistorical or static lens; alternatively, one must dredge up and analyze the sediments that underlie current discourses, and many of these sediments are found in the eighteenth century. More specifically, by reading the thoughts of such writers as Joseph Addison and Jonathan Swift, one is forced to read the links and antipathies between the discursive economies of epistemology -- philosophical, scientific, and economic -- …

A Privatization Of Politics: Anthony Elliot's Concepts Of The Self (2001), Paula Murphy

Reconstruction: Studies in Contemporary Culture

[First paragraph]

It would be difficult to find a more appropriate image of selfhood in the modern world than that found in Ezra Pound's poem In a Station of the Metro. It is a selfhood which is at once unique and conglomerative, fleetingly visible then tantalizingly out of focus. It is this slippery, indefinable entity that is the subject of Anthony Elliot's book. The title bears witness to the enormous breadth of its subject matter: Concepts of the Self is an attempt to engage with the various contemporary theoretical frameworks through which selfhood is explicated. Elliot's approach is admirably inter-disciplinary, …

Of Parts And Wholes: Self-Similarity And Synecdoche In Science, Culture And Literature, Dirk Vanderbeke

Reconstruction: Studies in Contemporary Culture

[Editors' Introduction]

The discussion here centers on how self-similarity, or parts resembling a whole, has been a recurring aspect in the most diverse fields of human thinking from antiquity to the present. Primary examples are drawn from physics, biology, cybernetics, alchemy, philosophy, myth and, of course, language and literature. The author argues that self-similar patterns are one of the persistent ways in which the human mind structures its experience and knowledge of the world, and then examines some of the questions that arise when an almost ubiquitous concept, structure or linguistic and literary phenomenon resurfaces in a new guise in …

Paradigm Shifts And New Worldviews: Kuhn, Laudan And Discovery In Molecular Biology, Priya Venkatesan

Reconstruction: Studies in Contemporary Culture

[Editors' Introduction]

The author poses an alternate set of ideas concerning paradigms, normal science, research traditions and scientific revolution on the basis of the unique and inherently distinctive development of molecular biology and genetics; for, a new set of conceptual tools concerning scientific progress are required for an adequate understanding of how biological processes were elucidated under the scientific auspices of the central dogma of the genetic code. This essay concentrates on a limited study of three aspects in genetics: the study of chromosome structure, dynamics and function, reverse transcriptases, and the discovery of RNA catalysts. In attempting to analyze …

On Gallardo And Smith's Alienwoman (2004), Stella Williams

Reconstruction: Studies in Contemporary Culture

[First paragraph]

Ximena Gallardo C. and C. Jason Smith's recent book, AlienWoman, is a truly fascinating analysis of the relationship/conflict between the female protagonist Lt. Ellen Ripley, played by Sigourney Weaver, and the monstrous feminine Alien throughout the Alien saga consisting of: Alien (1979), Aliens (1986), Alien3 (1992), and AlienResurrection (1997). Lt. Ellen Ripley introduced viewers to their first self-reliant and successful female hero. The authors claim an important site for discussion on the changing ideas about gender, sex, and the female body is created by the Alien saga.

<2> Insightful scene-by-scene analysis reveals race, gender, and class distinctions operating …

Hydrologic Variations Within Created And Natural Wetlands In Southeastern Virginia, Aaron Dyer Despres

OES Theses and Dissertations

The hydrology of wetlands, particularly how wetland soils collect, store, and redistribute water strongly affects how wetland systems function. In created wetlands, construction processes and materials influence the hydrology and consequently, the potential for successful reestablishment of target vegetation communities. During .2002- 2004, the Virginia Department of Transportation constructed large mitigation wetlands on two different Quaternary aged surfaces with very similar hydrogeomorphic conditions. The Sandy Bottom Nature Park site (SBNP) located in Hampton, VA and rests on the sandy loam Tabb Formation while the Charles City Wetland site (CCW) lies on the older and clay-rich Shirley Formation. This study documents …

Letters To John Lennon: A Play In Two Acts, Stacey Isom

English Theses & Dissertations

Letters to John Lennon is a two-act play about one woman's fantasies, nightmares, and memories that expose her desperate need to feel worthy of love. On the 20^th anniversary of John Lennon's death, Kay plans to go public with her identity as Lennon's illegitimate daughter. She believes this will result in her sudden rise to fame, a new peace movement, and the consummation of her love with a rock star. Several disasters keep her from her goals, the biggest of which is the arrival of Maury, who claims to be her real father. When Maury's claim seems authentic, Kay's …

A Phylogeny Of Genera Of The Fish Family Nemipteridae (Percoidei) Based On The Cytochrome B Gene, Denise R. Sliter

Biological Sciences Theses & Dissertations

The species level taxonomy of the Nemipteridae is well understood but existing morphological data is insufficient to hypothesize a phylogeny of the five genera of this family of percoid fishes. Furthermore, there are three distinct and widely disparate habitat requirements within nemipterids and little is known how these evolved. Species in the genera Pentapodus, Scaevius and Scolopsis are typically found around shallow reefs. Nemipterus species are also found in shallow-water, but they inhabit strictly soft sediment bottoms. Parascolopsis is the only deep-water genus and its species are also found over soft sediments. Complete cytochrome b gene sequences (1140 base …

Bacterial Degradation Of Disinfection By-Products In Drinking Water, Laura Inga Fauntleroy

Chemistry & Biochemistry Theses & Dissertations

Chlorine became a major disinfectant for the removal of microbial contaminants in 1914. Current water chlorination procedures yield halogenated disinfection byproducts (DBPs), such as haloalkanes and haloacetic acids (HAAs), due to the reaction of chlorine with naturally occurring organic compounds. Various water utilities have observed decreased HAAs levels in maximum residence time locations (MRTLs), where they were expected to be higher. These MRTLs have low free chlorine residual and high heterotrophic bacteria plate counts. Xanthobacter autotrophicus, GJ-10, is a bacterium that has been shown to contain dehalogenase enzymes and, therefore, can biodegrade HAAs. A number of water-system bacteria were …

Strong Interactions Between Juvenile Caribbean Spiny Lobster (Panulirus Argus) And Caribbean Reef Octopus (Octopus Briareus) In The Florida Keys, Jennifer Anne Lear

Biological Sciences Theses & Dissertations

Coexisting species may simultaneously compete for resources and interact as predator and prey, creating a strong interaction that can alter the structure of animal communities. This type of interaction potentially occurs between juvenile Caribbean spiny lobster (Panulirus argus) and Caribbean reef octopus (Octopus briareus) within hard-bottom habitats in the Florida Keys, FL (USA), where octopuses may consume juvenile lobsters and also compete with them for limited crevice shelters. I conducted a series of field and mesocosm studies to investigate the nature of octopus-lobster interactions and their implications for the structure of their populations in the wild. …

Dynamical Studies Of Model Membrane And Cellular Response To Nanosecond, High-Intensity Pulsed Electric Fields, Qin Hu

Electrical & Computer Engineering Theses & Dissertations

The dynamics of electroporation of biological cells subjected to nanosecond, high intensity pulses are studied based on a coupled scheme involving the current continuity and Smoluchowski equations. The improved pore formation energy model includes a dependence on pore population and density. It also allows for variable surface tension and incorporates the effects of finite conductivity on the electrostatic correction term, which was not considered by the simple energy models in the literature. It is shown that E(r) becomes self-adjusting with variations in its magnitude and profile. The whole scheme is self-consistent and dynamic.

An electromechanical analysis based on thin-shell theory …

Pavlivian Conditioning To Insulin-Induced Hypoglycemia As Indicated By Glycemic Response Motor Activity And Anxiety, Jermaine Dionte Jones

Psychology Theses & Dissertations

The purpose of this experiment was to demonstrate the responses to stimuli predicting the onset of hypoglycemia {HG), specifically the overt behavioral and glycemic conditioned responses to insulin-produced HG. When drug-opposite compensatory responses become associated with situational and environmental cues that predict drug administration, compensatory mechanisms can be elicited solely by drugassociated cues. Several studies have been conducted to determine the conditioned bloodglucose responses as elicited by stimuli predicting hypoglycemia. However, only a few studies have examined the behavioral conditioned responses associated with hypoglycemia. Insulin-induced HG and the elevated plus maze (EPM) procedure were utilized to determine the direction of …

Effects Of Ultrasonic And Hand-Activated Scaling On Tactile Sensitivity In Second Year Dental Hygiene Students In A Clinical Setting, Miranda Beeson

Dental Hygiene Theses & Dissertations

The purpose of this study was to determine if time spent instrumenting class III, IV, and V calculus clients, either hand-activated or with an ultrasonic scaler, decreased the tactile sensitivity of the clinician, and if change occurs in index finger, middle finger, and thumb tactile sensitivity prior to and following 45-minute scaling episodes. This study also afforded an opportunity to determine if tactile sensitivity changed in the same dental hygiene students over a one-year period of time by comparing data with that of a similar study conducted in the fall of 2002. Random assignment and a sample size of 25 …

Idiomatic Expressions And Marital Relationships Over Three Stages Of The Family Lifespan, Meredith T. Raynor

Institute for the Humanities Theses

In interpersonal communication language shared between two people becomes important in the everyday life of relational participants. Even more so, the language shared between married couples is vital because of their "unique relationship". Part of that language involves the symbols, gestures and words called idioms that have specialized meaning for the marital dyad.

This thesis sought to discover what idioms are identified among married couples at three stages of the family lifespan, newlyweds, couples with children and empty nest couples as they seek to maintain a system of "personalized communication" as it relates to their marital satisfaction (Breuss & Pearson, …

The Effect Of Humor On Elderly Well-Being, Mary M. Boone

Sociology & Criminal Justice Theses & Dissertations

The main objectives of this study were to identify the connections between the sense of humor and well-being in the elderly population, examine the benefits of humor as a coping mechanism, explore the role of humor as a preventative and therapeutic measure, and to attempt to gain a greater understanding of these connections. Humor has been the focus of study within many different domains, including psychology and medical research (immunology, pain management, cardiology, and psychoneuroimmunology), but there is a distinct lack of theory and research within the sociological realm on this topic (except in social psychology), especially involving the aging …

A Cross-National Analysis Of The Impact Of Conscription On Crime Rates, Nicolette G. Rose

Sociology & Criminal Justice Theses & Dissertations

Research has repeatedly shown that males in the age range of 16 to 24 years account for a disproportionately large volume of crime (Sampson and Laub 1993 ). The armed forces are major employers of young males in this crime-prone age range and could thus play an important role in crime prevention. The military provides many varied opportunities including a highly structured and regimented institution in which rigid behavioral norms and close monitoring are imposed. Some other incentives that service provides include educational opportunities through the" Advanced Individual Training", the GI Bill, in-service tuition assistance, and world-wide travel. All these …

Cyborg Bodies And Digitized Desires: Posthumanity And Phillip K. Dick, Jennifer Attaway

Reconstruction: Studies in Contemporary Culture

[Editors' Introduction]

The interaction between human beings and intelligent machines has challenged the traditional understanding of what it means to be human. In his novel, Do Androids Dream of Electric Sheep?, phillip k. dick rethinks human identity through the positioning of human beings within a technologically mediated reality that displaces the biological body and the spontaneity of human sensation. Written in 1968, dick's novel anticipates the effect of a technologically mediated culture on the formation of a posthuman identity. dick's fictional juxtaposition of the human being and the organically anthropomorphic android complicates conventional implications of embodiment. Androids are physically …