Digital Commons Network^™

Functional Analysis Of The Acetic Acid Resistance (Aar) Gene Cluster In Acetobacter Aceti Strain 1023, Elwood Mullins, T Joseph Kappock

Department of Biochemistry Faculty Publications

Vinegar production requires acetic acid bacteria that produce, tolerate, and conserve high levels of acetic acid. When ethanol is depleted, aerobic acetate overoxidation to carbon dioxide ensues. The resulting diauxic growth pattern has two logarithmic growth phases, the first associated with ethanol oxidation and the second associated with acetate overoxidation. The vinegar factory isolate Acetobacter aceti strain 1023 has a long intermediate stationary phase that persists at elevated acetic acid levels. Strain 1023 conserves acetic acid despite possessing a complete set of citric acid cycle (CAC) enzymes, including succinyl-CoA:acetate CoA-transferase (SCACT), the product of the acetic acid resistance (aar …

A Bibliometric Study Of Literature On Celiac Disease, Raj Kumar Bhardwaj Mr.

Library Philosophy and Practice (e-journal)

Celiac disease (CD) is a digestive autoimmune disorder, and prevalent among human-being worldwide, irrespective of gender, race, and ethnicity. Due to celiac disease an intestine get damaged, and become cumbersome for patients to absorb nutrients like fat, calcium, iron, and folate. This study is an attempt to make the quantitative study of research output on celiac disease (CD). Data of this study is obtained from Scopus (http://www.scopus.com) online database for the period 2001-12, and analyzed with different viewpoints. The study reveals that (14356) papers were published during the period under study. The highest number of papers (1604) was produced in …

Repeated Elevational Transitions In Hemoglobin Function During The Evolution Of Andean Hummingbirds, Joana Projecto-Garcia, Chandrasekhar Natarajan, Hideaki Moriyama, Roy E. Weber, Angela Fago, Zachary A. Cheviron, Robert Dudley, Jimmy A. Mcguire, Christopher C. Witt, Jay F. Storz

School of Biological Sciences: Faculty Publications

Animals that sustain high levels of aerobic activity under hypoxic conditions (e.g., birds that fly at high altitude) face the physiological challenge of jointly optimizing blood-O₂ affinity for O₂ loading in the pulmonary circulation and O₂ unloading in the systemic circulation. At high altitude, this challenge is especially acute for small endotherms like hummingbirds that have exceedingly high mass-specific metabolic rates. Here we report an experimental analysis of hemoglobin (Hb) function in South American hummingbirds that revealed a positive correlation between Hb-O₂ affinity and native elevation. Protein engineering experiments and ancestral- state reconstructions revealed that this …

December 3, 2013 Ereporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

Spartan Daily, December 3, 2013, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily (School of Journalism and Mass Communications)

Volume 141, Issue 39

Hybrid Pet/Mri Nanoparticle Development And Multi-Modal Imaging, David Hoffman

Theses and Dissertations

The development of hybrid PET/MRI imaging systems needs to be paralleled with the development of a hybrid intrinsic PET/MRI probes. The aim of this work was to develop and validate a novel radio-superparamagnetic nanoparticle (r-SPNP) for hybrid PET/MRI imaging. This was achieved with the synthesis of superparamagnetic iron oxide nanoparticles (SPIONs) that intrinsically incorporated 59Fe and manganese iron oxide nanoparticles (MIONs) that intrinsically incorporated 52Mn. Both [59Fe]-SPIONs and [52Mn]-MIONs were produced through thermal decomposition synthesis. The physiochemical characteristics of the r-SPNPs were assessed with TEM, DLS, and zeta-potential measurements, as well as in imaging phantom studies. The [59Fe]-SPIONs were evaluated …

Reichenbachia, Imperial Edition: Rediscovering Frederick Sander’S Late-Victorian Masterpiece Of Botanical Art, Erica Borey

Theses and Dissertations

This thesis project examines the history, provenance, and contemporary treatment of a rare Imperial Edition of Frederick Sander’s print collection Reichenbachia, Orchids Illustrated and Described, a high-quality orchid compendium dating to the late-nineteenth century. A local philanthropist loaned the Imperial Edition Reichenbachia, number 86 of 100 to Lewis Ginter Botanical Garden in 2011 on a long-term basis as a promised donation. Research into the origins of this collection involves several disparate historical topics, including the Victorian period of “orchid mania,” imperialist business practices, and chromolithographic printmaking. Discussion of the transition of this collection into a museum art collection covers its …

Assessing “Dangerous Climate Change”: Required Reduction Of Carbon Emissions To Protect Young People, Future Generations And Nature, J Hansen, P Kharecha, M Sato, V Masson-Delmotte, Et Al

School of Biological and Marine Sciences

We assess climate impacts of global warming using ongoing observations and paleoclimate data. We use Earth's measured energy imbalance, paleoclimate data, and simple representations of the global carbon cycle and temperature to define emission reductions needed to stabilize climate and avoid potentially disastrous impacts on today's young people, future generations, and nature. A cumulative industrial-era limit of ∼500 GtC fossil fuel emissions and 100 GtC storage in the biosphere and soil would keep climate close to the Holocene range to which humanity and other species are adapted. Cumulative emissions of ∼1000 GtC, sometimes associated with 2°C global warming, would spur …

Aldebaran: Vol. 8, Issue 1

Aldebaran

No abstract provided.

Integrated Theoretical And Computational Approaches To Study Hydrolysis And Aggregation Of Biomolecules, Mehmet Ozbil

Open Access Dissertations

In this thesis, we have focused on the following two projects: (1) mechanisms of peptide hydrolysis, and (2) aggregation of biomolecules. A plethora of theoretical and computational techniques; quantum mechanics, molecular dynamics, and molecular docking have been employed to accomplish the goals of these projects. The selective hydrolytic cleavage of the extremely stable peptide bond (-(O=)C-NH-) of peptides and proteins by enzymes and their analogues is required in a wide range of biological, biotechnological and industrial applications. In the first project, we have elucidated the mechanisms of peptide hydrolysis by non-metallic (beta secretase (BACE)) and metallic (insulin degrading enzyme (IDE) …

Evaluation Of Gross Protein/Energy Ratios For Adult Florida Pompano, Trachinotus Carolinus, Fed Practical Diets, In Relation To Growth, Feed Utilization, And Nitrogen Retention, Matthew C. J. Taynor

Open Access Theses

Florida pompano (Trachinotus carolinus) is a strong candidate for aquaculture production growth in the United States. Demonstrated through research, the species meets many of the criteria for species selection. Research is needed to complete our knowledge of the nutritional requirements at different ages in order to develop cost-effective and environmentally-friendly diets. Our goal was to examine the nutritional requirements in terms of protein and energy for market size fish. Six diets were formulated to be isoenergetic (Gross energy GE= 21 kJ/g). The formulated GP/GE ratios were 18, 19, 21, 22, 23, and 25 g/MJ. Fish average weight was 260.8±21g at …

Ms Grad Students Contribute To Research Study In Pnas, Sarah Gardner, Dave Albee

Press Releases

Brittany Philpot, Alex Patent, Sonia Flores and Gabby Cailing joined Dr. Dale Bredesen and Dr. Rammohan Rao in laboratory research at the Buck Institute for Research on Aging that shows ApoE4 reduces neuroprotective SirT1 levels. The study’s findings examined the mechanism by which ApoE4 confers risk for the development of Alzheimer’s disease.

Comparative Lipid Profiles Of Milk Bank Breast Milk And Infant Formulas, Anya Oleynik, Tatiana Eliseeva, Jack Y. Vanderhoek

Biochemistry and Molecular Medicine Faculty Publications

Lipid profiles of seven human breast milk samples obtained from milk banks and four infant formulas were compared in view of the potential food hypersensitivities of certain infants to human milk.The cholesterol (0.15-0.26 mM) content of the human samples was about 50% lower than that found in the infant formulas whereas the triglyceride (TG, 173-386 mM) contents of these products were found to be comparable.The major saturated fatty acid (SFA) and mono-unsaturated fatty acid (MUFA) were 16:0 and 18:1 respectively. The major poly-unsaturated fatty acid (PUFA) was 18:2 with otherPUFA members of the C18, C20 and C22 families identified and …

Grand Valley Forum, Volume 038, Number 15, December 2, 2013, Grand Valley State University

2013-2014, Volume 38

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

Current, December 02, 2013, University Of Missouri-St. Louis

Current (2010s)

No abstract provided.

Holy Cross Magazine, Vol. 48, No. 1, Winter 2014, College Of The Holy Cross

Holy Cross Magazine

Syllabus: Multivariable Calculus
with Professor David B. Damiano
By Pam Reponen

Buon Natale
With expertise from Holy Cross students, Professor Sarah Stanbury and photographer/curator Margot Balboni cast new light on an ancient—and immensely popular—Italian art form that celebrates the heart of Christmas.
By Rebecca Staley ’99

Opening Doors and Beyond
As the College draws its 40th anniversary of coeducation celebrations to a close, HCM reflects on the myriad events that gave the community a chance to listen, reflect and learn.
By HCM

Meet Sam
As the academic year began, we spent a day with Sam, an eighth grader at Nativity …

Formation And Analysis Of Zinc Oxide Nanoparticles And Zinc Oxide Hexagonal Prisms And Optical Analysis Of Cadmium Selenide Nanoparticles, Jared M. Hancock

Theses and Dissertations

In this dissertation, methods to synthesize ZnO are reported. First, zinc oxide nanoparticles were synthesized with small amounts of transition metal ions to create materials called dilute magnetic semiconductors (DMS). We employed a low temperature sol-gel method that produces ZnO nanoparticles of reproducible size and incorporates cobalt, nickel, and manganese ions into the nanoparticles. Conditions were controlled such that a range of amounts of Co, Ni, and Mn were incorporated. The incorporation was tracked by color changes in the white ZnO powder to blue for Co, green for Ni and yellow for Mn. XRD measurements showed the nanoparticles were on …

Methods And Metrics For Human Interaction With Bio-Inspired Robot Swarms, Sean C. Kerman

Theses and Dissertations

In this thesis we propose methods and metrics for human interaction with bio-inspired robot teams. We refine the concept of a stakeholder and demonstrate how a human can use stakeholders to lead a swarm as well as switch the swarm between different collective behaviors. We extend the human interaction metrics of interaction time and interaction effort presented in [1] to swarm systems and introduce the concept of interaction effort. These metrics allow us to understand how well the system performs under human influence. We employ systems theory to estimate these metrics, which is useful because this can be done without …

Adolescent Males In Secondary School In Ireland: Alcohol Use And Depressed Mood, Robert A. Kerr

Irish Journal of Applied Social Studies

Per capita alcohol consumption by Irish teenagers has doubled over the past three decades. There has also been a doubling of the suicide rate among young men. The aim of this study was to measure the correlation between alcohol consumption and negative mood (as measured by elements of the Beck Depression Inventory) in a sample (n = 169) of final-year secondary school male students. A questionnaire was devised to ascertain frequency, type and quantity of alcohol consumed, as well as attitudes towards drinking in general. The questionnaire also assessed overall mood disturbance, and these two sets of results were analysed …

College Of Arts And Sciences Names Two Department Chairs, Natalie Wade

Browse All News

No abstract provided.

The Daily Egyptian, December 02, 2013, Daily Egyptian Staff

December 2013

No abstract provided.

The Collegian (2013-12-02), Cleiri Quezada

UTB/TSC Archives - The Collegian [Newspaper]

Vol. 66, No. 14

Flood Inundation Mapping Using Hec-Ras And Gis For Shelby County, Tennessee, Farid Javadnejad

Electronic Theses and Dissertations Archive

Flood zones with 1% and 0.02% of annual flooding chance are projected in the ‎Federal Emergency Management Agency’s (FEMA) digital flood insurance rate maps ‎‎(DFIRMs) and are suited for identifying flood risk at the largest impacts. However, less ‎severe floods, which are not mapped in DFIRMs, still cause significant damage and ‎occur on a more frequent basis. This article employs an easy-to-setup GIS-based ‎solution for rapid inundation mapping of small flood events. The linear interpolation ‎technique (LITE Flood) is developed to rescale the hydraulic behavior inherent with a ‎larger flood event without performing additional hydraulic simulations. The approach is ‎evaluated …

Diversity In The Dietetics Profession, Xin Yi Ter

Electronic Theses and Dissertations Archive

Majority of Registered Dietitians (RD) in the United States are Caucasian females. This study aims to understand the factors associated with low enrollment of minority students in the dietetics major and difficulties faced in the process of becoming an RD. This was a descriptive survey research. Three sets of survey were given to ethnic minorities who were (1) undergraduate dietetic students in Tennessee, (2) undergraduate students not majoring in dietetics at University of Memphis, and (3) dietetic interns in Tennessee. Seventeen, eleven and six participants responded to survey 1, 2, and 3 respectively. Eight respondents (73%) from survey 2 reported …

Immunolocalization Of An Amino-Terminal Fragment Of Apolipoprotein E In The Pick's Disease Brain, Troy T. Rohn, Ryan J. Day, Lindsey W. Catlin, Raquel J. Brown, Alexander J. Rajic, Wayne W. Poon

Biology Faculty Publications and Presentations

Although the risk factor for apolipoprotein E (apoE) polymorphism in Alzheimer's disease (AD) has been well described, the role that apoE plays in other neurodegenerative diseases, including Pick's disease, is not well established. To examine a possible role of apoE in Pick's disease, an immunohistochemical analysis was performed utilizing a novel site-directed antibody that is specific for an amino-terminal fragment of apoE. Application of this antibody, termed the amino-terminal apoE cleavage fragment (nApoECF) antibody, consistently labeled Pick bodies within area CA1 of the hippocampus in 4 of the 5 cases examined. Co-localization of the nApoECF antibody with PHF-1, a general …

Iron Isotope Cosmochemistry, Kun Wang

All Theses and Dissertations (ETDs)

Iron is the most abundant element in the Earth and the 4th most abundant in the crust and mantle; Fe is involved in every stage of planetary formation and differentiation. Iron isotope ratios are robust process tracers used to understand the origin of the Solar System, planetary formation, and differentiation processes such as the moon-forming giant impact, core-mantle segregation, and crust formation. In this dissertation, I report the most complete dataset of high-precision iron isotope compositions of a wide range of extraterrestrial samples including carbonaceous, ordinary, and enstatite chondrites, aubrites, brachinites, HED meteorites: howardites, eucrites and diogenites), martian meteorites, angrites, …

Altitudinal And Thermal Variation In Ambient Nutrient Uptake And Uptake Kinetics In Temperate Streams, Brady Kohler

School of Natural Resources: Dissertations, Theses, and Student Research

Temperature is often considered a master variable controlling many chemical reactions and biological processes. Research efforts have begun address how temperature affects whole stream nutrient uptake rates, but little has attention has been paid to the influence of temperature on nutrient uptake versus concentration kinetics. In this study, we investigated 1) how ambient nutrient uptake rates and 2) nutrient uptake kinetics vary along a thermal gradient established by an altitudinal gradient in the Rocky Mountains, Colorado, USA. Instantaneous nutrient additions were performed at 15 streams within three adjacent drainage basins in the Colorado Rocky Mountains to test these questions. Ambient …

Changes In Poa Annua Populations In Response To Herbicides And Plant Growth Regulators, Jesse Brown

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Poa annua (annual bluegrass; ABG) is an invasive weedy species in turfgrass. Herbicides and plant growth regulators (PGRs) are often used for ABG control, providing limited or inconsistent results. Identifying shifts in ABG populations in response to these treatments would be beneficial for understanding inconsistent control. Our research employed amplified fragment length polymorphic (AFLP) markers with the objective to determine if there are changes in genetic structure of ABG populations after multiple-year season-long control programs in three states. Annual bluegrass was sampled after the second or third year of seven different season-long ABG treatments consisting of herbicide or PGR applications. …

Zinc Environment In Proteins: The Flexible And Reactive Core Of Hiv-1 Ncp7 And The Inhibitory Site Of Caspase-3, A. Gerard Daniel

Theses and Dissertations

Zinc is an essential cofactor of several proteins. The roles of zinc in these proteins are classified as catalytic, structural or regulatory. Zinc present in structural sites is considered to be a chemically inert, static structural element. On the contrary, previous studies on a C2H2 type zinc finger model compound and the C3H type HIV-1 NCp7 C-terminal zinc knuckle have shown that zinc at these sites can undergo coordination sphere expansion under the influence of a Pt based electrophile. The pentacoordination observed around zinc in these experiments raises an important question: are the structural zinc motifs found in the proteins …

Millennial-Scale Temperature Change Velocity In The Continental Northern Neotropics, Alexander Correa-Metrio

Ocean Engineering and Marine Sciences Faculty Publications

Climate has been inherently linked to global diversity patterns, and yet no empirical data are available to put modern climate change into a millennial-scale context. High tropical species diversity has been linked to slow rates of climate change during the Quaternary, an assumption that lacks an empirical foundation. Thus, there is the need for quantifying the velocity at which the bioclimatic space changed during the Quaternary in the tropics. Here we present rates of climate change for the late Pleistocene and Holocene from Mexico and Guatemala. An extensive modern pollen survey and fossil pollen data from two long sedimentary records …