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Articles 3811 - 3840 of 16980
Full-Text Articles in Entire DC Network
Erving And Ira Were Counting Cards When A Couple Of Biggest Men They Ever Saw Walked Up Behind Them And Said, “We Don’T Want Your Play, Partner”, Walter Clark
Bios Sociologicus: The Erving Goffman Archives
This conversation with Walter Clark, former researcher at the Alcohol Research Group, was recorded over the phone on July 17, 2009.Breaks in the conversation flow are indicated by ellipses. Supplementary information and additional materials inserted during the editing process appear in square brackets. Undecipherable words and unclear passages are identified in the text as “[?]”.
Stable Carbon Isotope Evidence Of Ancient Maya Agriculture At Tikal, Guatemala, Richard Lee Burnett
Stable Carbon Isotope Evidence Of Ancient Maya Agriculture At Tikal, Guatemala, Richard Lee Burnett
Theses and Dissertations
Stable carbon isotope analyses of the humin fraction of the soil organic matter were conducted on more than 160 soil profiles from Tikal, Guatemala. The profiles were collected from near areas associated with the earthworks of Tikal; an ancient ditch and parapet construction hypothesized to have formed ancient boundaries of the polity. In addition to the isotope analyses, the physical and chemical characteristics of the horizons were determined. Maize, a C4 plant, formed an integral part of the ancient Maya diet and is the only known C4 plant cultivated by the Maya. Prior to and subsequent to the ancient Maya …
Computer 30 Models Of Pulmonary Epithelium And Endothelium Cross Sections And Alveoli Across A Septum, Valerie Henry
Computer 30 Models Of Pulmonary Epithelium And Endothelium Cross Sections And Alveoli Across A Septum, Valerie Henry
Theses
The first portion of the project deals with creating three-dimensional computer generated models for the use in lung/particle studies. The models are to be proportional, to scale, and representative of the real structures. The models were created using Autodesk Maya 2008. The structures created are cross-sections of an alveolar epithelium and a capillary endothelium as they are found on either side of the respiratory basement membrane, and two alveoli with the septa! wall between. The models of the cellular cross-section include the cytoskeletal components, vesicles, and cellular membrane. The filaments of the cytoskeleton (microfilament, intermediate filament, microtubule) have been made …
Expression Of An Alternate Splice Form Of Bmi-1 In Multiple Myeloma, Adam Austin, Kristine Veys, Debbie Wong, James Tung
Expression Of An Alternate Splice Form Of Bmi-1 In Multiple Myeloma, Adam Austin, Kristine Veys, Debbie Wong, James Tung
Undergraduate Research Opportunities Program (UROP)
The concept of “tumor stem cells” has garnered much attention in the last few years. Tumor stem cells are believed to exist among a heterogeneous group of cells that constitute a tumor. These tumor stem cells often express genes that are important for stem cell function, cell division, and maintenance of pluripotent state in stem cells. Stem cell or stem cell maintenance genes such as SALL 4 and Bmi-1 are often seen in these cancer cells and contribute to self-renewing divisions and cancer cell survival. In particular, high expression of Bmi-1 (B lymphoma mouse Moloney leukemia virus insertion region), a …
Baseline Microbial Characterizations Of An Imperiled Aquatic Diversity Hotspot: Ash Meadows National Wildlife Refuge, Jessica Newburn, Jim Bruckner, Jenny C. Fisher, Duane P. Moser
Baseline Microbial Characterizations Of An Imperiled Aquatic Diversity Hotspot: Ash Meadows National Wildlife Refuge, Jessica Newburn, Jim Bruckner, Jenny C. Fisher, Duane P. Moser
Undergraduate Research Opportunities Program (UROP)
Located in the discharge zone of the Death Valley Flow System, Ash Meadows National Wildlife Refuge is a spring-fed desert oasis and biodiversity hotspot about 90 miles northwest of Las Vegas. These critical wetlands are potentially threatened by groundwater pumping, exotic species invasions, and climate change. Although a major component of the lower food web, very little is known about the microbial makeup of this ecosystem. As a first step towards understanding the microbial and biogeochemical aspects of this system, a detailed molecular-based characterization of microbial communities, baseline chemistry, and physical characteristics of various springs of Ash Meadows will be …
The Characterization Of Two Diverse Magnetotactic Bacteria: Lems And Mms-1, Ulysses C. Pickard, Paul A. Howse, Dennis A. Bazylinski
The Characterization Of Two Diverse Magnetotactic Bacteria: Lems And Mms-1, Ulysses C. Pickard, Paul A. Howse, Dennis A. Bazylinski
Undergraduate Research Opportunities Program (UROP)
Magnetotactic bacteria (MTB) are a diverse group of prokaryotes that biomineralize membrane-bound magnetic crystals known as magnetosomes. The magnetosomes are aligned within the cell and consist of either magnetite (Fe3O4) or greigite (Fe3S4). The biomineralization of magnetosomes consists of several processes including: invagination of the cytoplasmic membrane, iron uptake into the cell and then into the magnetosome membrane vesicle, and crystallization of the mineral phase inside the vesicle. Mam genes control magnetosome biomineralization with most of the genes present in an island called a magnetosome island. Many of the mam genes are conserved between different species of MTB. The genes …
Attempts To Cultivate Bacteria From Deep Subsurface Aquifers And Mountaintop Plant Communities, Eric D. Hughes, J. C. Bruckner, Duane P. Moser
Attempts To Cultivate Bacteria From Deep Subsurface Aquifers And Mountaintop Plant Communities, Eric D. Hughes, J. C. Bruckner, Duane P. Moser
Undergraduate Research Opportunities Program (UROP)
In the late 1990s, the limits of life were pushed even further when microorganisms were discovered thriving 2.5 km below the surface of the Earth in deep South African gold mines. These very simple communities were dominated by a single species of bacteria from within the phylum, Firmicutes. Desulforudis audaxviator remains unique to a sizeable portion of the South African deep subsurface. At depths below 2.5km, it comprises well over 99% of all organisms present, which presents a unique circumstance in which the environment has provided a natural pure culture. From this naturally occurring pure culture, environmental genomics was applied …
Martian Life Detection With Amino Acid Enantiomers, Ali Jamil, Gaosen Zhang, Henry J. Sun
Martian Life Detection With Amino Acid Enantiomers, Ali Jamil, Gaosen Zhang, Henry J. Sun
Undergraduate Research Opportunities Program (UROP)
The Viking mission showed that Martian soil can degrade a heterotrophic medium to carbon dioxide as if live microorganisms were present. The result is considered inconclusive, however, because abiotic oxidants, such as superoxides, may also exist on Mars and would explain the Viking result. One way to resolve this ambiguity is to repeat the Viking experiment with a isomerically pure medium. The consumption of one isomer, either D or L, would indicate biological activity. Indiscriminate destruction of both isomers would indicate abiotic redox processes. This idea was validated for glucose by REU research last summer (Sun et al. 2009). The …
Point And Nonpoint Source Analysis Of Nutrients, Metals, And Pathogens In The Sediment And Water Column In Las Vegas Wash, Christine Simmons, Kumud Acharya
Point And Nonpoint Source Analysis Of Nutrients, Metals, And Pathogens In The Sediment And Water Column In Las Vegas Wash, Christine Simmons, Kumud Acharya
Undergraduate Research Opportunities Program (UROP)
Formerly an ephemeral watercourse, Las Vegas Wash is now a perennial system due to urban runoff and wastewater treatment plant (WWP) effluent. Las Vegas Wash flows into Lake Mead, where the discharge point is only a few miles upstream of Las Vegas’ main water intake. This small water cycle establishes the necessity to evaluate water quality especially due to non point sources pollution, wherein my research lies. Several points along Las Vegas Wash upstream and downstream of WWP have been chosen to represent different landuse types such as commercial, residential, wastewater treatment plants, etc. At each location, parameters including arsenic, …
Pdest Fg12-Cmv Dsred Vector, Jarod Wolffis, Sheri L. Holmen
Pdest Fg12-Cmv Dsred Vector, Jarod Wolffis, Sheri L. Holmen
Undergraduate Research Opportunities Program (UROP)
Melanoma is the most rapidly increasing malignancy among young people in the United States. If detected early, the disease is easily treated; however, once the disease has metastasized it is largely refractory to conventional therapies and is associated with a high mortality rate. The development of human cancer from a pre-malignant primary tumor to a metastatic lesion that develops at secondary sites is thought to be a multi-step process, requiring many genetic and epigenetic events that provide a growth advantage to cells. It is still unclear which of the many genetic changes in human cancers are required for metastasis. Therefore, …
Role Of Ecdysone Signaling In Fat Body Remodeling, Marsha Kristel Bernardo, N. Bond, Allen G. Gibbs
Role Of Ecdysone Signaling In Fat Body Remodeling, Marsha Kristel Bernardo, N. Bond, Allen G. Gibbs
Undergraduate Research Opportunities Program (UROP)
Climate change is fundamentally connected to animal development and survival, and the life history of an organism must be coordinated with predictable seasonal changes of the environment. Climate change affects the life cycle of plants, a major food source for insects. If photoperiod, the primary environmental queue that insects utilize to determine the proper emergence time, and food availability becomes out of sync, many populations of insects and other animals could be threatened. Understanding animal development can provide insight into this issue and could provide clues that may help the scientific community predict how insect populations may respond to climate …
Stationary Phase Mutagenesis In Bacillus Subtilis: The Interaction Between Transcription And Error-Prone Replication In Conditions Of Stress, Mary Girard, Eduardo Robleto
Stationary Phase Mutagenesis In Bacillus Subtilis: The Interaction Between Transcription And Error-Prone Replication In Conditions Of Stress, Mary Girard, Eduardo Robleto
Undergraduate Research Opportunities Program (UROP)
While under conditions of stress, non-dividing cells may acquire beneficial mutations. This is referred to as stationary phase mutagenesis, or adaptive mutagenesis. Previous research has shown that actively transcribed genes and those under selective pressure are prone to mutations that confer escape from non-dividing conditions. Accordingly, strains lacking transcription factors have shown a drastically lower number of mutations that confer escape while under amino acid starvation than those observed in the wildtype background. Also, error-prone DNA polymerases are known to be active in cells under stress and it has been shown that strains lacking an error-prone DNA polymerase display reduced …
Undergraduate Research Opportunities Program, University Of Nevada Las Vegas, College Of Sciences
Undergraduate Research Opportunities Program, University Of Nevada Las Vegas, College Of Sciences
Undergraduate Research Opportunities Program (UROP)
No abstract provided.
Life-Course Socio-Economic Factors, Skin Colour And Abdominal Obesity In Adulthood In A Brazilian Birth Cohort, David A. Gonzalez, Aydin Nazmi, John S. Yudkin, Cesar G. Victora
Life-Course Socio-Economic Factors, Skin Colour And Abdominal Obesity In Adulthood In A Brazilian Birth Cohort, David A. Gonzalez, Aydin Nazmi, John S. Yudkin, Cesar G. Victora
Food Science and Nutrition
Objective:Obesity is an increasingly prevalent nutritional disorder throughout the world. In particular, abdominal obesity is associated with cardiovascular and metabolic risk. The present study aimed to evaluate the effects of skin colour and life-course socio-economic indicators on waist circumference (WC), hip circumference (HC) and waist:hip ratio (WHR) in young adults.
Design:Population-based birth cohort study. Individuals born in 1982 in Pelotas (southern Brazil) were visited on a number of occasions from birth to age 23–24 years. A sample of the cohort was sought in 2006 and 972 individuals were located. The analysis was restricted to individuals with complete data …
2009-08-06 Unm News Minute, University Of New Mexico Communication And Marketing Department
2009-08-06 Unm News Minute, University Of New Mexico Communication And Marketing Department
UNM News Minute 2009
No abstract provided.
Copper Toxicity And Accumulation: Physiology, Chemistry, And Molecular Biology, Jonathan Blanchard
Copper Toxicity And Accumulation: Physiology, Chemistry, And Molecular Biology, Jonathan Blanchard
Open Access Dissertations
Our knowledge of aquatic Cu toxicity has increased greatly over the past several years culminating with the incorporation of a model (the Biotic Ligand Model (BLM)) into the regulatory framework which allows for the site specific adjustment of water quality criteria based on water chemistry. However, our understanding of Cu toxicity in the aquatic environment is limited mostly to freshwater (FW). Because of this limited knowledge, this dissertation set out to examine the affect of salinity on Cu toxicity and accumulation across salinities from FW to sea water (SW). First, this work examined tissue specific Cu accumulation in five salinities …
Studies On Weathered Waterborne Treated Wood: Leaching Of Metals During Service And Metals Based Detection Upon Recycle, A. Rasem Hasan
Studies On Weathered Waterborne Treated Wood: Leaching Of Metals During Service And Metals Based Detection Upon Recycle, A. Rasem Hasan
Open Access Dissertations
Weathered waterborne treated wood is believed to behave differently than new wood during service regarding the loss of its metallic-based preservatives. Also, weathered preserved wood should be separated from the unpreserved wood upon recycle. The first objective of this dissertation was to evaluate losses from weathered CCA-treated wood samples at different retention levels under normal field conditions and to compare leaching to new ACQ (as alternative to CCA). Results showed that arsenic leached at a higher rate than chromium and copper in all CCA treated wood samples, while copper leached the highest from the ACQ sample. Overall results suggest that …
Molecular Aspects Of Nitrogen Metabolism In Fishes, Tammy Laberge Macdonald
Molecular Aspects Of Nitrogen Metabolism In Fishes, Tammy Laberge Macdonald
Open Access Dissertations
Molecular aspects of nitrogen metabolism in vertebrates is an interesting area of physiology and evolution to explore due to the different ways in which animals excrete nitrogenous waste as they transition from an aquatic to a terrestrial lifestyle. Two main products of nitrogen metabolism in fishes are ammonia and urea. Ammonia is produced during protein catabolism and build up of ammonia is toxic. Some aquatic vertebrates convert ammonia into a less toxic compound urea via de novo synthesis through the ornithine-urea cycle (O-UC). Five enzymes are involved in the O-UC: carbamoyl phosphate synthetase (CPS), ornithine carbamoyl transferase (OCT), argininosuccinate synthetase …
08/06/2009 - Eiu Foundation Announces Redden Fund Recipients For 2009-2010, University Marketing And Communications
08/06/2009 - Eiu Foundation Announces Redden Fund Recipients For 2009-2010, University Marketing And Communications
2009
No abstract provided.
Beyond Eden: Revising Myth, Revising Allegory In Steinbeck's "Big Book", Jeremy S. Leatham
Beyond Eden: Revising Myth, Revising Allegory In Steinbeck's "Big Book", Jeremy S. Leatham
Theses and Dissertations
Steinbeck's use of allegory in East of Eden has caused much critical resistance, but recent work in allegory theory offers ways of rereading the novel that help mediate much of this criticism. The approach to allegory forwarded here, which allows for multiple bodies of referents and fluidity between text and referents, empowers readers with greater autonomy and individual authorship. In the case of East of Eden such an approach moves the novel beyond a simple retelling of the Cain-Abel narrative to establish a flexible mythic framework for use in an ever-changing world. By challenging dualistic thinking, narrow vision, and cultural …
The Daily Egyptian, August 06, 2009, Daily Egyptian Staff
The Daily Egyptian, August 06, 2009, Daily Egyptian Staff
August 2009
No abstract provided.
Social Determinants Of Mixed Feeding Behavior Among Hiv-Infected Mothers In Jos, Nigeria, Sheela Maru
Social Determinants Of Mixed Feeding Behavior Among Hiv-Infected Mothers In Jos, Nigeria, Sheela Maru
Yale Medicine Thesis Digital Library
Mixed feeding confers excess risk of mother-to-child transmission (MTCT) of Human Immunodeficiency Virus (HIV) compared with exclusive breastfeeding (EBF) and exclusive formula feeding (EFF). We undertook a quantitative and qualitative cross-sectional survey to identify the social determinants of mixed feeding among a subset of HIV-infected women enrolled in a MTCT prevention program in Jos, Nigeria. Of the 91 participants, 68(75%) exclusively formula fed, 7(8%) exclusively breastfed, and 16(18%) practiced mixed feeding. Of the mixed feeding women, 7 primarily formula fed and 9 primarily breastfed. Women who primarily formula fed described family pressure as the reason for mixed feeding, whereas women …
Annual Summer Residential Program At Unh Helps Launch Young Scientists, David Sims
Annual Summer Residential Program At Unh Helps Launch Young Scientists, David Sims
Media Relations
No abstract provided.
Using Pcr Amplification And Genetic Sequence Analysis Of 18s Rrna Genes To Survey The Microbial Diversity And Distribution Of Eukaryotic Microbes Inhabiting Two Thermo-Acidic Streams In Yellowstone National Park, Wyoming, Robert Harvey Jr.
LSU New Orleans Theses and Dissertations
A cultivation-independent approach, sequence analysis of 18S rRNA genes PCR-amplified from environmental DNA, was used to explore the diversity and distribution of eukaryotic microbes inhabiting algal mats in two acidic geothermal streams in Yellowstone National Park. The objectives were to: (1) clarify the identity of mat forming algae in Nymph Creek (2) survey microbial species in the Nymph Creek mat over seasonal intervals along a thermal gradient (3) compare microbial species in the Nymph Creek mat with those in Alluvium Creek mats (4) evaluate microbial species in algal mats formed on different substrates in Alluvium Creek. The results show that …
Vegetative Response To Hurricane Sedimentation, Jennifer Carter Roberts
Vegetative Response To Hurricane Sedimentation, Jennifer Carter Roberts
LSU New Orleans Theses and Dissertations
This research investigated the response of the dominant salt marsh macrophyte Spartina alterniflora var. Loisel to sedimentation from Hurricanes Gustav and Ike. A range of sedimentation was used to track the above and belowground plant response, as well as the volume of mineral and organic matter, in the upper reaches of the marsh soil from September 2008 to April 2009. Where storm sedimentation was greatest (~3.5 cm), there were significant increases in live aboveground biomass. Although live belowground biomass did not change significantly over time, the volumetric contribution of both mineral and soil organic matter in the shallow marsh soil …
Classification Of Carpiodes Using Fourier Descriptors: A Content Based Image Retrieval Approach, Patrick Trahan
Classification Of Carpiodes Using Fourier Descriptors: A Content Based Image Retrieval Approach, Patrick Trahan
LSU New Orleans Theses and Dissertations
Taxonomic classification has always been important to the study of any biological system. Many biological species will go unclassified and become lost forever at the current rate of classification. The current state of computer technology makes image storage and retrieval possible on a global level. As a result, computer-aided taxonomy is now possible. Content based image retrieval techniques utilize visual features of the image for classification. By utilizing image content and computer technology, the gap between taxonomic classification and species destruction is shrinking. This content based study utilizes the Fourier Descriptors of fifteen known landmark features on three Carpiodes species: …
Fabrication Of Anisotropic Nanostructures On Solid Substrates For Applications As Optically Active Surfaces, Mohan Krishna Vattipalli
Fabrication Of Anisotropic Nanostructures On Solid Substrates For Applications As Optically Active Surfaces, Mohan Krishna Vattipalli
Dissertations and Theses
Analysis of the vibrational energy levels in molecules using Raman Spectroscopy is a popular analytical method amongst today's optical technologies. Unlike fluorescence microscopy, the Raman emission doesn't undergo the process of photobleaching, which leads to short lived signal collection. The only downside with this approach is the small absorption cross-section resulting in a low intensity of the emission signal. One of the approaches used to boost this weak signal is Surface Enhanced Raman Spectroscopy (SERS). My research efforts have been focused on how to create a novel SERS substrate with aligned patterns of Au/Ag nanoparticle deposited metals of a particular …
Deans' Forum Summary, August 6, 2009, Uno Office Of Academic And Student Affairs
Deans' Forum Summary, August 6, 2009, Uno Office Of Academic And Student Affairs
2009-2010 Academic Year
Notes from the August 6, 2009 OASA Leadership Forum.
Gender At Work: The Role Of Habitus And Gender-Performance In Service Industry Occupations, Laura Dean-Shapiro
Gender At Work: The Role Of Habitus And Gender-Performance In Service Industry Occupations, Laura Dean-Shapiro
LSU New Orleans Theses and Dissertations
This study examines the relationship between gender roles and habitus in service industry occupations. It draws primarily from the works of Pierre Bourdieu and Judith Butler. Data includes an exploratory focus group, non-participant observations and interviews with women currently or formerly employed as bartenders, bar backs, servers, or hostesses. The main themes that emerged included how habitus is affected by views of employment, drug and alcohol use, the naturalization of gender roles, and the effect of appearance standards. This study supports previous feminist works that posit that gender as a performance, not a biological trait. Further this performance is used …
Characterization Of Slr1098, A Protein With Similarity To The Bilin Lyase Subunit Cpce From The Cyanobacterium Synechocystis Sp. Pcc 6803, Kali Hicks
LSU New Orleans Theses and Dissertations
The goal of this research is to investigate the role of the slr1098 gene in the cyanobacterium Synechocystis sp. PCC 6803, a gene with similarity to cpcE which encodes a subunit of an enzyme involved in bilin attachment to phycocyanin. This protein is hypothesized to be involved in oligomerization of phycocyanin due to previous results showing the mutant made shorter phycocyanin rods. The recombinant Slr1098 protein was produced and purified from E. coli cells. Binding assays showed interaction between Slr1098 and both apo- and holo-phycocyanin, but not to apo-allophycocyanin. Slr1098 blocked bilin addition at Cys-82 on CpcB by the CpcS/CpcU …