Digital Commons Network^™

Rachel Carson And Nature As Resource, Object And Spirit : Identification, Consubstantiality, And Multiple Stakeholders In The Environmental Rhetoric Of The Conservation In Action Series., Cynthia E. Britt

Electronic Theses and Dissertations

This project examines the Conservation in Action series, twelve texts produced by the United States Fish and Wildlife Service (USFWS) from 1947-1957 and developed and written by Rachel Carson and other agency employees. She developed the series to publicize the refuge service and conservation work, and I specifically focus on the first two booklets in the series, Chincoteague: A National Wildlife Refuge and Parker River: A National Wildlife Refuge, which argue the need for waterfowl sanctuaries. I analyze the texts as early examples of government environmental rhetoric produced by Carson, author of Silent Spring. For the analysis I use four …

The Effects Of Estrogen And Phytoestrogens On Focal Infarct, Pten, And P-Akt Expression In Aged Rats., Karen Powell

Electronic Theses and Dissertations

Premenopausal women have fewer and less severe strokes when compared to postmenopausal females and aged matched males. The most obvious factor that could account for the observed difference is the physiological activity of Estrogen. Numerous studies over the past two decades have investigated estrogen's role as a neuroprotective agent against stroke damage. Many physiological mechanisms have been identified supporting neuroprotection; however, data also exist to suggest that estrogen may be harmful in certain situations such as those that produce high blood levels of estrogen or use estrogen in older models. The Women's Health Initiative (WHI), a large epidemiological study, found …

De-Differentiation Of Parotid Acinar Cells In Vitro., Andrew Scott Currie 1983-

Electronic Theses and Dissertations

Background: When rat salivary gland cells are cultured in vitro, they dedifferentiate within 24 h. Hypothesis: Growth factors will prevent de-differentiation of primary cultures of parotid gland cells, and they will induce differentiation of ParC5 cells. DNA methylation drives de-differentiation and the loss of expression in cultured parotid cells. Methods: Rat parotid glands were collected and cultured in media using different combinations of growth factors. DNA was evaluated for methylation at various time points. Results: No media tested prevented the de-differentiation of parotid cells, and none induced differentiation of ParC5 cells. Limited variation in methylation of CpG sites was seen. …

Forage News [2010-08], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

• KFGC Field Day
• Beef Bash 2010
• Grazing Sudangrass, Pearl Millet, and Sorghum Hybrids
• Intake and Digestibility of Improved Selections of Tall Fescue and Orchardgrass Hays
• Ag Groups Applaud Supreme Court Ruling on Biotech Alfalfa
• The Potential of Biofuels in Kentucky
• Calibrating your Forage Seeder Can Save Big Money when Summer Seeding

Seed Removal By The Red-Rumped Agouti, Dasyprocta Leporina, On A Caribbean Island, Benton Taylor

All Theses

Agoutis are important seed dispersers as well as predators of numerous plant species in Neotropical continental rainforests, but little is known about their role as seed removers (dispersers and predators) on islands. We investigated seed removal of seven rain forest species on the island of Dominica in the Lesser Antilles by the entire seed-remover community and specifically by the Red-rumped Agouti, Dasyprocta leporina, a scatterhoarding rodent introduced to the island approximately 2500 years ago. We recorded removal rates in three regions of Dominica from 168 experimentally placed seed groups containing a total of 1356 seeds. Seed groups were either accessible …

Grid Pricing: An Empirical Investigation Of Market Signal Clarity, Scott Fausti, Bashir Qasmi, Jing Li

Economics Staff Paper Series (1969 - 2017)

The ability of the grid marketing system for fed cattle to provide an efficient price transmission mechanism is investigated. Nerlove' s (1958) adaptive expectations approach is adopted to model the relationship between grid premiums (discounts) and the weekly relative supply of carcass quality attributes. Linear regression techniques are used to estimate Nerlove's supply response function. Granger Causality tests are conducted to investigate the relationship between grid premiums (discounts) and the relative supply of carcass quality attributes. Regression estimates and the Granger Causality tests provide empirical support for the 2005 National Beef Quality Audit call for clearer market signals.

The Icj And The Future Of Transboundary Harm Disputes: A Preliminary Analysis Of The Case Concerning Aerial Herbicide Spraying (Ecuador V. Colombia), Robert Esposito

Pace International Law Review Online Companion

No abstract provided.

The Role Of Behavioral Temperaments On The Ecology Of The Caribbean Reef Octopus, Octopus Briareus, Timothy Jordan

All Theses

Traditional studies of predator-prey interactions have primarily focused on direct consumption as the most important effect on prey. Recent studies, however, have illustrated that nonlethal, risk effects may have an even greater impact. In this study, I evaluated the role of direct consumption and risk effects of the Caribbean reef octopus, Octopus briareus, on multiple species of crab and spiny lobster prey in Florida Bay, Florida. I conducted 13 monthly censuses of 8 nearshore field sites and observed the density and distribution of octopuses, crabs and lobsters. I found a significant negative correlation between the density of octopus predators and …

The Enthymematic Model Of Meaning-Making In Video Games: Towards Narratively Designed Transmedia Texts, Kevin Human

All Theses

After introducing the ludological and narratological sides of modern video game theory, we explain Ian Bogost's concept of procedural rhetoric. We go on to argue that procedural rhetoric in practice is a form of what Stephen Dinehart and others have called narrative design. Furthermore, we argue that narrative design principles fall into the Aristotelian, enthymematic form of knowledge creation. We then cite examples of effective narrative design in video games and show how they fit the enthymematic model. We conclude with a discussion of how the epistemic principles of narrative design are applicable to a transmedia design context and how …

Relative Risk Of Acquiring Black-Legged Ticks, Ixodes Scapularis, In Central Mississippi, J. Goddard, J. Goddard Ii

Midsouth Entomologist

No abstract provided.

Mechanisms Of Growth And Sex Determination In The Atlantic Silverside, Menidia Menidia, And The Spatial Scale Of Local Adaptation, Tara Duffy

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Local adaptation in widely-dispersed marine species may result from strong selection on multiple life history traits that differ among populations. This results in unique sets of traits that maximize fitness of individuals within populations along the species' range. The Atlantic silverside, Menidia menidia, is a fish that exhibits high gene flow potential, but differences in growth and sexual differentiation among populations demonstrate strong local adaptation. To better understand the spatial pattern of local adaptation in this species, I compared the form of sex determination, which shifts from genetic to environmental sex determination, across this species' range and quantified the rate …

Water And Ion Transport In Lacrimal Gland: Models And Experiment, Wei Chieh Huang

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Tear secretion is a complicated process that involves two different cell types. The lacrimal acinar cell is thought to secrete a hypertonic primary fluid with a high K+ concentration. This fluid is then modified by the ductal epithelia and transported to the avascular ocular surface. It is known that both sympathetic and parasympathetic input trigger protein release, but the role of adrenergic stimulation on water secretion in lacrimal gland remains unclear. Therefore, the first goal of this dissertation is to examine the influence ofΑ- andΒ-adrenergic activation on tear fluid production.Tear secretion requires coordination of different membrane channels and transporters. Walcott …

Determining The Role Of Natural Selection In Plant Invasion: A Study Of Introduced Japanese Knotweed (Fallopia Japonica) And A Native Relative, Woodland Knotweed (Persicaria Virginiana), Kelly L. O'Donnell

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

The ecological and evolutionary study of plant invasion processes is of exceeding importance in today's changing environment. However, few studies have addressed the impact of natural selection on invasive plant species. While scientists have been able to detect selection in natural populations, most studies are not replicated in space or time leading to unreliable statistical estimates and tentative causal analyses. My objective was to further our knowledge of selection dynamics in the wild by working in the area of invasion biology through studies that combine both field and controlled settings. It has been suggested that plant invasion affords us the …

Benthic-Pelagic Coupling In Eutrophic Estuaries From The Temperate And Sub-Tropical Zones: The Contrasting Roles Of Benthic Suspension-Feeding And Nutrient Loading, Charles C. Wall

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

Coastal waters have suffered from multiple stressors that have diminished habitat value and living marine resources in estuaries. Excess nutrient loading, leading to eutrophication, has been identified as a primary driver of these changes. Some level of nutrient loading is necessary to sustain production in marine systems, but the level of appropriate nutrient loading for a given estuary or resource species is unknown. Benthic suspension feeders, such as bivalves and sponges, have the potential to buffer or mediate eutrophication through their filtration activities. Many eutrophic systems have lost suspension feeders due to overharvesting, disease, and harmful algal blooms. In a …

Genetic Analysis Of The Gaba Synthetic Enzymes: From Synapse Development To Activity Dependent Transcription, Xiaoyun Wu

Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions)

GABA mediates inhibitory synaptic transmission in the mammalian brain. GABA is synthesized through two glutamate decarboxylases, GAD67 and GAD65. My thesis addresses two questions of GABA signaling through the genetic manipulation of the GABA synthetic enzymes.First, I examined the role of GABA transmission in inhibitory synapse development in the mouse neocortex. I used a genetic strategy to specifically block GABA synthesis or release in single neurons and examined the impact on axon and synapse development. Such cell autonomous manipulation of GABA signaling without disturbing circuitactivity level is critical to reveal its precise function in synapse formation. Chronic blockade of transmission …

Leaf Toughness And Cyanide Defense Of Passiflora Dioscoreifolia In Varied Light Habitats, August 2010, James Bellush

Monteverde Institute: Tropical Ecology and Conservation

Coevolution can lead to complex biological relationships between tropical plants and herbivores, as with Passiflora (Passifloraceae) vines and heliconiine butterflies (Nymphalidae: Heliconiiae). Constant herbivory from heliconiine butterflies has led to the development of cyanide-based defensive compounds by Passiflora, in addition to the more general defense of toughening leaves, found in all plants. To observe the effect of light availability on leaf toughness and cyanide content in Passiflora dioscoreifolia, leaves from twenty plants in sun and shade habitats were sampled in the forests of Monteverde, Costa Rica and tested for their leaf toughness and cyanide content. Plants in the sun habitat …

The Role Of Size, Social Interaction And Predation On Metachrosis Of The Green Spiny Lizard (Sceloporus Malachiticus), August 2010, Daniel Whonsetler

Monteverde Institute: Tropical Ecology and Conservation

Metachrosis, or color change, in lizards may have social or antipredator functions. The purpose of this study was to determine impact of size, social interaction and predatory pressures on metachrosis in S. malachiticus. Nine lizards were collected and photographed to quantify their initial color. The snout-vent length and photographed color (as hue, saturation and brightness) were measured and compared (Spearman Rank Correlation, P > 0.60), showing no significant correlation. Lizards were then paired and allowed to interact for thirty minutes, once with every lizard and photographed after. Interactions were broken down into three groups (same size, with larger, with smaller), where …

Ecotourism, Environmental Awareness And Green Living In Costa Rica, August 2010, Alexandra Sanserino

Monteverde Institute: Tropical Ecology and Conservation

Over the past 30 years, Monteverde, Costa Rica, has adopted ecotourism as its primary source of revenue. Since the inception of ecotourism in tropical regions, many studies have been done on both the positives (more conservation) and negatives (littering, pollution, etc.) associated with it. With the knowledge of both the benefits and consequences associated with ecotourism, the government of Costa Rica has adopted an environmental education program to make residents aware of environmental issues and give them the tools to protect the environment through their daily activities. But just how effective is this program? The current study compares environmental awareness …

Tregtia Elektronike, Naim Neziri

Theses and Dissertations

Tregtia Elektronike (e-commerce) është shkëmbim virtual (paperless) i informacioneve

te biznesit duke përdorur EDI-(electronic data interchange), e-mail, buletinin elektronik në bord,

faks transmisionet dhe fondin elektronik te transfereve. Poashtu i referohet online stoqeve,

transaksioneve të bondeve , “shkarkimeve” dhe shitjeve të produktevete“buta”(software, muzikë

dokumenteve,etj) dhe transaksionve B2B- business to business. [1]

Tregtia elektronike ka pasur një impakt enorm në biznes kudo në botë andaj edhe qëllimi

kryesor i këtij studimi është që të informojë biznesin dhe konsumatroin kosovar me gjithqka

rreth asaj se si bëhet Tregtia elektronike.

Në ditët e sotme , Tregtia Elektronike, është duke e ndërruar mënyren e …

Neutralization Of Vascular Endothelial Growth Factor Antiangiogenic Isoforms Or Administration Of Proangiogenic Isoforms Stimulates Vascular Development In The Rat Testis, Michelle M. Baltes-Breitwisch, Robin A. Artac, Rebecca C. Bott, Renee M. Mcfee, Jill G. Kerl, Debra T. Clopton, Andrea S. Cupp

Department of Animal Science: Faculty Publications

Vascular endothelial growth factor A (VEGFA) plays a role in both angiogenesis and seminiferous cord formation, and alternative splicing of the Vegfa gene produces both proangiogenic isoforms and antiangiogenic isoforms (B-isoforms). The objectives of this study were to evaluate the expression of pro- and antiangiogenic isoforms during testis development and to determine the role of VEGFA isoforms in testis morphogenesis. Quantitative RT-PCR determined that Vegfa_165b mRNA was most abundant between embryonic days 13.5 and 16 (E13.5 and 16; P < 0.05). Compared with ovarian mRNA levels, Vegfa_120 was more abundant at E13–14 (P < 0.05), Vegfa_164 was less abundant at E13 (P < 0.05), and Vegfa_165b tended to be less abundant …

Sustainable Environments And Pro-Environmental Behavior, Jessica L. Kirk

Interior Design Program: Student Creative Activity

This thesis examines the ability of the sustainably designed building to alter occupant behaviors using LEED for New Construction and Major Renovation, Green Building Rating System™ as a standard of measure. A cross sectional survey compares the pro-environmental behaviors, intentions, environmental knowledge, and pro-environmental orientation of occupants working in a traditionally designed building and occupants working in a LEED-NC certified building located on the University of Nebraska - Lincoln Campus. While there is a visible increase in the pro-environmental variables for occupants working in the sustainable environment, data analysis indicates that these differences are not statistically significant for any of …

2009-2010 Annual Report: Office Of Scholarly Communications, Paul Royster, Sue Ann Gardner

Institutional Repository Information

The Office of Scholarly Communications (OSC) had a very busy and productive year. Important developments included expansion of the UNL DigitalCommons repository by over 7,000 items, a major increase in downloads furnished from the repository, passage of a UNL Faculty Senate resolution endorsing use of the repository, creation of an e-book imprint, registration as a publisher with Portico for permanent storage of journal content, recognition in a feature article in The Chronicle of Higher Education, multiple campus, national, and international presentations by Paul Royster and Sue Ann Gardner, ranking of 17th among institutional and 33rd among world repositories by the …

Feeding Corn Milling Co-Products To Forage Fed Cattle, 1st Edition, Aaron Stalker, Rick Rasby, Galen E. Erickson, Crystal Buckner, Terry J. Klopfenstein

University of Nebraska-Lincoln Extension: Historical Materials

Introduction

Beef calves from weaning until they enter feedlots, developing heifers, and beef cows are fed primarily forage diets. Especially in the winter, forages are low in protein and phosphorus and need to be supplemented. Corn milling co-products are excellent sources of both protein and phosphorus and fi t nicely into winter supplementation programs. Corn milling co-products are also an excellent source of energy and are particularly well suited to forage based diets.

Two primary types of milling processes currently exist, resulting in quite diff erent feed products. The dry milling process produces distillers grains plus solubles (DGS), and the …

Vital Signs, Fall 2010, Boonshoft School Of Medicine

Vital Signs

A fifty-six page newsletter created by the Boonshoft School of Medicine to document the current affairs of the school. This issue includes a variety of feature articles, a research spotlight, a calendar of events, and more.

Karya Urban Kinetik Tipografi Dalam Puisi Siber, R. Ain, M.S. Rahamad

Research Publications (2006 to 2010)

In the merge of multimedia literature in Malaysia, the genre which takes the most impact is poetry. It is due to its nature for being simple and easy than any other types of genre in literature. With the increasing growth of multimedia technology, writers are able to get their works published via electronic media, which offers websites purposely created for that particular need. The passion to create extraordinary masterpieces start to become a demand among experimentative writers. There are no more barriers for those who are willing to be more passionate. In order to create extraordinary masterpieces like implementing their …

Where Malay Politeness Is Not Apparent: A Study Of Front Counter Staff Interactions In Malaysian Public Hospitals, C.H. Kuang, S.K. Lau, P.S. Ang, M.K. David

Research Publications (2006 to 2010)

Although we know that stereotyping is not an accurate way to appreciate human beings, nevertheless, it is still used as a means to assess human behavior and consequently, misconceptions occur. One of the dominant groups living in Malaysia is the Malays who are often perceived more positively than others. Of the three dominant ethnic groups found in peninsular Malaysia, they are often described as a graceful community which places great emphasis on respect and care for the feeling of others and are imbued with refined behavior through appropriate upbringing and religious values. The Malay community tends to avoid conflicts and …

Comparison Of Connectedness Measures And Changes In Connectedness Of The U.S. Duroc Population, N. Soga, Matthew L. Spangler, C. R. Schwab, P. J. Berger, T. J. Baas

Department of Animal Science: Faculty Publications

Introduction

Low levels of connectedness can create problems in uncoupling genetic and environmental influences on phenotypes. This can result in bias in prediction error variance and covariance, decreasing the accuracy of comparison of EBV across herds (Smith and Banos, 1991; Kennedy and Trus, 1993). The main objective of this study was to compare connectedness statistics published in the literature and determine which measure is most practical or suitable for estimating the risk associated with EBV comparisons in an across-herd analysis and to determine changes in connectedness in the U.S. Duroc population over time.

Creating Touchpanel Graphics For Control Systems, Lucas Mcdaniel

All Theses

More often than system designers would like to admit, a discrepancy lies between the implementation of audiovisual control systems and their apparent ease of use to a novice or casual user. System designers and programmers are often hampered by the software tools provided by industry manufacturers and cannot reliably create desirable graphical interfaces that match the level of systems they are asked to program and install.
Popular consumer trends in portable touchscreen devices, pioneered on devices such as the Apple iPhone, light a way forward into a new era of elegantly solving the audiovisual control system graphical user interface problem. …

Effects Of An Enriched And Barren Environment On Behavioral And Physiological Responses Related To Laying Hen Welfare, Caroline Davis

All Theses

This study was conducted to determine the effects of housing environment on behavioral and physiological responses related to laying hen welfare. General observations and two behavioral fear assessments (emergence test [EM] and tonic immobility test [TI]) were used as behavioral assessments. A heterophil/lymphocyte ratio was used as a physiological stress indicator. Nine hundred day-old Leghorn chicks were randomly assigned to either a floor pen environment or a commercial cage housing environment. The cage chicks were housed in 20 commercial battery brooder cages (25 per cage) up until four weeks of age and then moved to 39 battery grower cages (10 …

Process Development For The Fractionation And Isolation Of Corn Fiber Hemicellulose, Justin Montanti

All Theses

Corn fiber is a co-product of the corn wet-milling process that holds potential to become a value-added product. A process was developed to fractionate and isolate the hemicellulose B component of corn fiber generated by corn wet milling. The process consisted of pretreatment by soaking in aqueous ammonia (SAA) of starch-free corn fiber followed by enzymatic cellulose hydrolysis, during which the hemicellulose B was solubilized by cleavage into xylo-oligosaccharides. The hemicellulose A and B fractions were separated by adjustment of pH, and the hemicellulose B recovered by precipitation with ethanol.
The pretreatment step resulted in a high retention of major …