Digital Commons Network^™

Synthesis Of Methylene Γ-Lactones Using Carbon Dioxide, Bryan P. Ferrell, Shizue Mito, Giber Martinez, Intesar El-Feitouri

COURI Symposium Abstracts, Summer 2012

Many industrial processes generate the greenhouse gas, carbon dioxide, as a byproduct. Carbon dioxide can be captured and recycled by using it in organic synthesis to prepare beneficial compounds. The goal of this project is to develop a new method of synthesizing methylene γ-lactones using CO₂-metal complexes. Many gamma lactones are biologically active, and their synthesis is of importance to pharmaceutical and other industries. Allenes can react with a transition metal-CO₂ complex. It is proposed that a titanium metal complex prepared with an aldehyde will bind to an allene, and a seven-membered ring forms as CO_{2 …}

Osh6 Extends Replicative Lifespan By Transporting Sterols To The Vacuolar Membrane And Promoting Vacuole Fusion, Senetibeb Gebre

Theses and Dissertations

Families of oxysterol-binding proteins (OSBP) are proposed to be involved in sterol metabolism. The unique sterol composition of eukaryotic membranes requires proteins such as OSBPs that contribute to sterol homeostasis. This thesis explores the role of Osh proteins (OSBP homologues) in membranes of yeast vacuoles in light of lifespan extension. The results show that over-expression of OSH6 promoted vacuole fusion, an ergosterol-requiring process, and extended the replicative lifespan. It is found that the level of Osh6 decreased with age. This decrease is slowed in a mutant expressing elevated OSH6 levels. It is also found that the sterol-binding domain of Osh6 …

Safety First: Recognizing And Managing The Risks To Child Participants In Magnetic Resonance Imaging Research, Jocelyn Downie, Matthias H. Schmidt

Research Papers, Working Papers, Conference Papers

Specialized and uptodate knowledge is required to identify and manage the risks associated with advanced biomedical research Additional complexities need to be considered when the research involves infants or young children In this article we focus on recent information about the physical risks of pediatric magnetic resonance imaging research and highlight information gaps With an eye to assisting institutional review boards and researchers we consider strategies for the management of these risks and formulate key questions aimed at exposing hidden hazards Institutional review boards should ask these questions and researchers should bear them in mind as they develop research protocols

Physiological And Morphological Variation In A Stream Salamander, Desmognathus Brimleyorum, Vanessa K Hilliard Young

Theses and Dissertations

Habitats vary in their biotic and abiotic components across space and time. Variability can introduce challenges for organisms unless they have the ability to alter their physiology in a way that maximizes fitness in a variable habitat. My thesis investigated the physiological and morphological responses of the stream salamander Desmignathus brimleyorum to variations in thermal and physical habitat characteristics. Chapter one concentrates on changes in metabolic response and swimming performance of salamanders exposed to differing thermal treatments and tests the predictions of the optimal acclimation theory. Chapter two investigates differences in swimming performance with respect to tail morphology, as well …

A Numerical Simulation Of Fluid-Structure Interaction For Flow Through Valves Of A Hermetic Compressor With Immersed Boundary Method., Aditya Mushyam, Josep M. Bergada

International Compressor Engineering Conference

The aim of the paper is to simulate numerically the Fluid-Structure Interaction for flow through valves of a hermetic compressor using immersed boundary method. The paper is primarily concerned with the mathematical structure and implementation of the Immersed Boundary Method which includes both the Immersed Boundary form of the equations of motion and also the Immersed Boundary numerical Scheme. The flow pattern of the fluid in the compressor is intimately connected with the performance of the valves, and this paper presents a solution of the Navier-Stokes equations in 2D of a Newtonian fluid under laminar regime, in the presence of …

The Influence Of Optimization Algorithm On Suction Muffler Design, Talita Wajczyk, Rodrigo Link

International Compressor Engineering Conference

The standards for refrigerators energy consumption are increasing faster in the recent past years, so, the situation demands compressor with a higher efficiency level. To develop such compressors the performance of the most important compressor´s components must be increased. However, the pressure for fast time to market are turning more difficulty the optimization process of a big amount of components, specially using experimental validations. One of the most important components in the compressor is the suction muffler. The main suction muffler functions are the thermal insulation of gas from the evaporator and noise attenuation. To increase the performance of muffler …

Unh Tree Walk Podcast Offers Fresh View Of Campus, Carrie Sherman

UNH Today Archive

No abstract provided.

Calling All Prospective Csis: Unh Offers New Program In Forensics, Lori Wright

UNH Today Archive

No abstract provided.

Homogeneous Viologens For Use As Catalysts In Direct Carbohydrate Fuel Cells, Dane C. Hansen

Theses and Dissertations

Deriving electrical energy from glucose and other carbohydrates under mild conditions is an important research objective because these biomolecules are abundant, renewable, and can provide 12 to 24 electrons per molecule, yielding substantial electrical power. It was previously observed that disubstituted viologens, salts of N,N'-disubstituted 4,4'-bipyridine, are able to oxidize glucose under alkaline conditions. Building on that initial result, the objective of this work was to understand and quantify the effectiveness and utility of viologens as catalysts for use in direct carbohydrate fuel cells.The extent that viologens oxidize carbohydrates, the conditions under which that oxidation occurs, and the mechanism for …

The Urban Garden Discourse Community: An Organic Form Of Technical Writing, Adrea Etta Coley

Theses and Dissertations

The purpose of this project is to inform the audience about the methods used to process food in America and the importance of urban gardening. Technical writing skills were used to create a manual and a storyboard for a video game to teach novices how to create a home or community garden. The Basic Foundations for Organic Gardening is a manual produced from the journal notes during the author's first year of training in the garden. This project also explores the theory of video games as a tool for teaching. A storyboard was developed for a future interactive video game, …

Students Fail To Transfer Knowledge Of Chromosome Structure To Topics Pertaining To Cell Division, Dina L. Newman, Christina M. Catavero, Leslie Kate Wright

Articles

Cellular processes that rely on knowledge of molecular behavior are difficult for students to comprehend. For example, thorough understanding of meiosis requires students to integrate several complex concepts related to chromosome structure and function. Using a grounded theory approach, we have unified classroom observations, assessment data, and in-depth interviews under the theory of knowledge transfer to explain student difficulties with concepts related to chromosomal behavior. In this paper, we show that students typically understand basic chromosome structure but do not activate cognitive resources that would allow them to explain macromolecular phenomena (e.g., homologous pairing during meiosis). To improve understanding of …

Stoneflies Of Unusual Size: Population Genetics And Systematics Within Pteronarcyidae (Plecoptera), John S. Sproul

Theses and Dissertations

Chapter 1. The family Pteronarcyidae (Plecoptera) is a highly studied group of stoneflies and very important to a wide variety of aquatic studies. Several phylogenies have been proposed for this group recent decades, however there is little congruence between the various topologies. The present study revises the phylogeny of the group by combining molecular data from mitochondrial cytochrome oxidase subunit II, ribosomal subunit 12S, ribosomal subunit 16S, and nuclear loci ribosomal subinit 18S and Histone H3, with published morphological data in a parsimony-based total evidence analysis. The analysis produced a well-supported phylogeny with novel relationships within the genus Pteronarcys. …

Halide Edib:Turkish Nationalism And The Formation Of The Republic, Ansev Demirhan

USF Tampa Graduate Theses and Dissertations

Halide Edib positioned herself as a main agent and figure of the Turkish nationalist movement, as both visionary and defender of her nation. Contributing to the evolving discourse on what it meant to be Turkish; Edib placed the family at the center of the state and identified women as state-builders. Through her interpretation of Turkish nationalism, I argue that Edib obscured the division between the public and private realm and classified women as agents in the creation of the Republic. I further contend that by doing this she contributed to the legitimization of Turkey on an international scale. This thesis …

Relationships Of Heat Stress Levels To Heat-Related Disorders And Acute Injury During Deepwater Horizon Cleanup Operations, Michael H. Hiles

USF Tampa Graduate Theses and Dissertations

Outdoor workers are often subjected to thermal conditions beyond the comfort zone, but to what degree do such conditions affect the health and safety of those workers is still a matter requiring further investigation. The purpose of this study is to examine the relationship between thermal conditions and (1) heat-related disorders and (2) acute injuries using injury and illness data collected during the BP Deepwater Horizon clean-up operations. Over an eleven month period, 5,485 cases were identified as either heat-related or an acute injury (incident type) and further divided by severity. Daily weather data were used to estimate the wet …

The Effects Of Fractures On The Occurrence And Distribution Of Arsenic In The Upper Floridan Aquifer During Aquifer Storage And Recovery, William Charles Hutchings

USF Tampa Graduate Theses and Dissertations

ABSTRACT

Aquifer storage and recovery (ASR) is used world-wide to supplement available water supplies by storing surplus water in aquifers and recovering it during periods of drought and increased demand. The use of ASR as an option for increasing available municipal irrigation and fresh water supplies is threatened as a result of the mobilization of arsenic in some aquifers during ASR. Arsenic is liberated from arsenic-bearing sulfide minerals as a result of the mixing of oxidizing injected water with reducing insitu groundwater. Fracture networks can have significant influence on the migration and distribution of arsenic in the Upper Floridan Aquifer …

Paul & Philippi: Historic Times And Significant Relationships, Charles R. Gresham

Leaven

No abstract provided.

Index, Criticism Editors

Criticism

No abstract provided.

07-11-2012 Summer Science & Mathematics Academy Coming To Swosu, Southwestern Oklahoma State University

THE BARK ARCHIVE 2012

Southwestern Oklahoma State University will again host an annual Summer Science & Mathematics Academy (SSMA), funded by the Oklahoma State Regents for Higher Education, on the Weatherford campus starting July 15 and continuing until July 27.

07-11-2012 Swosu Faculty Receive Promotions And Tenure, Southwestern Oklahoma State University

THE BARK ARCHIVE 2012

Six Southwestern Oklahoma State University faculty members have been awarded promotions, and four faculty members have received tenure effective with the 2012-13 academic year.

07-11-2012 Appeddu Presents Health Care Poster At National Conference, Southwestern Oklahoma State University

THE BARK ARCHIVE 2012

Southwestern Oklahoma State University Associate Professor Dr. Lisa Appeddu recently presented a poster at the national meeting of the National Association of Advisors for the Health Professions (NAAHP) in Baltimore (MD).

Fidelity And Diagnostic Species Concepts In Vegetation Classification In The Rocky Mountains, Northern Utah, Usa, Antonin Kusbach, James N. Long, Helga Van Miegroet, Leila M. Shultz

T.W. "Doc" Daniel Experimental Forest

No abstract provided.

Volume 49, Number 47: July 11, 2012, University Of North Dakota

University Letter Archive

No abstract provided.

Evolutionary History And Phylodynamics Of Influenza A And B Neuraminidase (Na) Genes Inferred From Large- Scale Sequence Analyses, Jianpeng Xu, C. Todd Davis, Mary C. Christman, Pierre Rivailler, Haizhen Zhong, Ruben O. Donis, Guoqing Lu

Biology Faculty Publications

Background: Influenza neuraminidase (NA) is an important surface glycoprotein and plays a vital role in viral replication and drug development. The NA is found in influenza A and B viruses, with nine subtypes classified in influenza A. The complete knowledge of influenza NA evolutionary history and phylodynamics, although critical for the prevention and control of influenza epidemics and pandemics, remains lacking.

Methodology/Principal findings: Evolutionary and phylogenetic analyses of influenza NA sequences using Maximum Likelihood and Bayesian MCMC methods demonstrated that the divergence of influenza viruses into types A and B occurred earlier than the divergence of influenza A …

July 11, 2012, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Drugs For Preventing Red Blood Cell Dehydration In People With Sickle Cell Disease., Srikanth Nagalla, Samir K Ballas

Department of Medicine Faculty Papers

BACKGROUND: Sickle cell disease is an inherited disorder of hemoglobin, resulting in abnormal red blood cells. These are rigid and may block blood vessels leading to acute painful crises and other complications. Recent research has focused on therapies to rehydrate the sickled cells by reducing the loss of water and ions from them. Little is known about the effectiveness and safety of such drugs.

OBJECTIVES: To assess the relative risks and benefits of drugs to rehydrate sickled red blood cells.

SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group's Haemoglobinopathies Trials Register.Last search of the Group's Trials …

Image Deconvolution Techniques For Single Molecule Studies, Michael C. Desantis

All Theses and Dissertations (ETDs)

One of the principal challenges in the field of biophysics, particularly that of protein-nucleic acid interactions, is the need to analyze information from single proteins as opposed to ensembles of many molecules. Consequently, the advent of high-resolution imaging in single molecule microscopy has enabled researchers to probe the underlying processes of gene regulatory networks and other biological systems. There is, nonetheless, a tradeoff between spatial and temporal resolution, or the ability to localize a molecule in space at increasingly shorter time scales. As such, this dissertation addresses these challenges that hinder single molecule studies by:: i) developing deconvolution techniques in …

Evolutionary History And Phylodynamics Of Influenza A And B Neuraminidase (Na) Genes Inferred From Large-Scale Sequence Analyses, Haizhen Zhong

Chemistry Faculty Publications

Background: Influenza neuraminidase (NA) is an important surface glycoprotein and plays a vital role in viral replication and drug development. The NA is found in influenza A and B viruses, with nine subtypes classified in influenza A. The complete knowledge of influenza NA evolutionary history and phylodynamics, although critical for the prevention and control of influenza epidemics and pandemics, remains lacking.

Methodology/Principal findings: Evolutionary and phylogenetic analyses of influenza NA sequences using Maximum Likelihood and Bayesian MCMC methods demonstrated that the divergence of influenza viruses into types A and B occurred earlier than the divergence of influenza A …

"We've Got Something More To Prove Here": Racial-Ethnic And Social Class Identities And The Challenges Facing Latina/O College Students, Gretchen Marin

Master's Theses

Latinas/os are one of the fastest growing minority groups in the United States. In fact, the United States Census Bureau projects that by the year 2050, the numbers of Hispanics will more than double, increasing from the current figure of 50.5 million to 102.6 million. Despite such rapid population growth, the numbers of Latinas/os with at least a Bachelor’s degree remain low. In this study, I explore the intersection of racial-ethnic and social class identities in relation to academic identities. Specifically, I examine the challenges facing Latina/o college students of various socioeconomic backgrounds as they negotiate a predominantly White, middle-class …

A Qualitative Study Of Barriers To Dental Care Among Older Minority Adults Residing In Lower Income Communities, Demetress Davis

Master's Theses

ABSTRACT: The purpose of this study was to explore factors that presented barriers to the use of dental care among low-income minority older adults. Participants were recruited from low-income senior housing in Hartford, CT. In-depth semi-structured interviews were conducted to obtain data on demographics, oral health status, oral health knowledge and factors that affected use of dental care including finances, perceived oral symptoms, cultural factors, and beliefs about dental care. Interviews were conducted with 17 participants. The major perceived barriers were ability to pay for care, transportation and fear/mistrust of the dentist. Participants may have had poor oral health as …

Angular And Dynamical Properties In Resonant Inelastic X-Ray Scattering: Case Study Of Chlorine-Containing Molecules, Renaud Guillemin, Wayne C. Stolte, Loic Journel, Stephane Carniato, Maria Novella Piancastelli, Dennis W. Lindle, Marc Simon

Chemistry and Biochemistry Faculty Research

Polarization-dependent resonant inelastic x-ray scattering (RIXS) has been shown to be a probe of molecular-field effects on the electronic structure of isolated molecules. In this experimental analysis we explain the linear dichroism observed in Cl 2p polarized RIXS following Cl 1s excitation of a series of chlorofluoromethanes (CF3Cl, CF2Cl2, CFCl3, and CCl4) as due to molecular-field effects, including singlet-triplet exchange. We present an approach to extract directly the 2p inner-shell electronic state populations from the experimental measurements. Using the angular properties of the measured KV emission we also are able to determine the value of the polarization anisotropy parameter βp …