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Articles 144271 - 144300 of 302474
Full-Text Articles in Physical Sciences and Mathematics
Probing The Transition State Region In Catalytic Co Oxidation On Ru, H. Öström, H. Öberg, H. Xin, Jerry L. Larue, M. Beye, M. Dell'angela, J. Gladh, M. L. Ng, J. A. Sellberg, S. Kaya, G. Mercurio, D. Nordlund, M. Hantschmann, F. Hieke, D. Kühn, W. F. Schlotter, G. L. Dakovski, J. J. Turner, M. P. Minitti, A. Mitra, S. P. Moeller, A. Föhlisch, M. Wolf, W. Wurth, M. Persson, J. K. Nørskov, F. Abild-Pedersen, H. Ogasawara, L. G. M. Pettersson, A. Nilsson
Probing The Transition State Region In Catalytic Co Oxidation On Ru, H. Öström, H. Öberg, H. Xin, Jerry L. Larue, M. Beye, M. Dell'angela, J. Gladh, M. L. Ng, J. A. Sellberg, S. Kaya, G. Mercurio, D. Nordlund, M. Hantschmann, F. Hieke, D. Kühn, W. F. Schlotter, G. L. Dakovski, J. J. Turner, M. P. Minitti, A. Mitra, S. P. Moeller, A. Föhlisch, M. Wolf, W. Wurth, M. Persson, J. K. Nørskov, F. Abild-Pedersen, H. Ogasawara, L. G. M. Pettersson, A. Nilsson
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Femtosecond x-ray laser pulses are used to probe the CO oxidation reaction on Ru initiated by an optical laser pulse. On a timescale of a few hundred femtoseconds, the optical laser pulse excites motions of CO and O on the surface allowing the reactants to collide and, with a transient close to a picosecond (ps), new electronic states appear in the O K-edge x-ray absorption spectrum. Density functional theory calculations indicate that these result from changes in the adsorption site and bond-formation between CO and O with a distribution of OC—O bond lengths close to the transition state (TS). After …
Protein Sectors: Statistical Coupling Analysis Versus Conservation, Tiberiu Teşileanu, Lucy J. Colwell, Stanislas Leibler
Protein Sectors: Statistical Coupling Analysis Versus Conservation, Tiberiu Teşileanu, Lucy J. Colwell, Stanislas Leibler
Publications and Research
Statistical coupling analysis (SCA) is a method for analyzing multiple sequence alignments that was used to identify groups of coevolving residues termed “sectors”. The method applies spectral analysis to a matrix obtained by combining correlation information with sequence conservation. It has been asserted that the protein sectors identified by SCA are functionally significant, with different sectors controlling different biochemical properties of the protein. Here we reconsider the available experimental data and note that it involves almost exclusively proteins with a single sector. We show that in this case sequence conservation is the dominating factor in SCA, and can alone be …
Energy Efficiency And Conservation Attitudes: An Exploration Of A Landscape Of Choices, Mersiha Spahic Mcclaren
Energy Efficiency And Conservation Attitudes: An Exploration Of A Landscape Of Choices, Mersiha Spahic Mcclaren
Dissertations and Theses
This study explored energy-related attitudes and energy-saving behaviors that are no- or low-cost and relatively simple to perform. This study relied on two data sources: a longitudinal but cross-sectional survey of 4,102 U.S. residents (five biennial waves of this survey were conducted from 2002 to 2010) and a 2010 cross-sectional survey of 2,000 California residents. These two surveys contained data on two no- and low-cost behaviors: changing thermostat setting to save energy (no-cost behavior) and CFL installation behavior (low-cost behavior). In terms of attitudes, two attitudinal measures emerged from these data following a Cronbach's alpha and Confirmatory Factor Analysis (CFA): …
Florida Undergraduate Research Conference Abstract 2015, Aaron D. Clevenger
Florida Undergraduate Research Conference Abstract 2015, Aaron D. Clevenger
Aaron D. Clevenger
Memories, Kentucky Alfalfa Conference
Memories, Kentucky Alfalfa Conference
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
Photo Highlights Of The 35th Kentucky Alfalfa Conference, Darold J. Akridge
Photo Highlights Of The 35th Kentucky Alfalfa Conference, Darold J. Akridge
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
Farmer Panel--What Hay Quality Means To Me, Clayton Geralds, Ben Cox, John Mccoy, Dennis Wright, Minos Cox
Farmer Panel--What Hay Quality Means To Me, Clayton Geralds, Ben Cox, John Mccoy, Dennis Wright, Minos Cox
Kentucky Alfalfa and Stored Forage Conference
No abstract provided.
Hay Quality: What Is It?, Garry D. Lacefield, Don Ball
Hay Quality: What Is It?, Garry D. Lacefield, Don Ball
Kentucky Alfalfa and Stored Forage Conference
Profitable livestock production almost always requires a forage program that will supply large quantities of adequate quality, homegrown feed. A major percentage of the feed units for beef (83%) and dairy cattle (61%) come from forages. In addition, forages supply an estimated 91%, 72%, 15% and 99% of the nutrients consumed by sheep and goats, horses, swine, and wildlife, respectively.
Alfalfa And The Environment, Don Ball
Alfalfa And The Environment, Don Ball
Kentucky Alfalfa and Stored Forage Conference
We live in a society in which many people don’t understand or appreciate agriculture as much as they really should. After all, only about 2% of the population of the United States is involved in agriculture, so most people don’t know much about it. Furthermore, most don’t spend much time thinking about it. Forage crops, including alfalfa, are especially under-appreciated because forage is not consumed directly by humans (alfalfa sprouts being a minor exception).
Co Oxidation Over Au/Tio2 Catalyst: Pretreatment Effects, Catalyst Deactivation, And Carbonates Production, Johnny Saavedra, Camilah Powell, Basu Panthi, Christopher Pursell, Bert Chandler
Co Oxidation Over Au/Tio2 Catalyst: Pretreatment Effects, Catalyst Deactivation, And Carbonates Production, Johnny Saavedra, Camilah Powell, Basu Panthi, Christopher Pursell, Bert Chandler
Bert D Chandler
A commercially available Au/TiO2 catalyst was subjected to a variety of thermal treatments in order to understand how variations in catalyst pretreatment procedures might affect CO oxidation catalysis. Catalytic activity was found to be inversely correlated to the temperature of the pretreatment. Infrared spectroscopy of adsorbed CO experiments, followed by a Temkin analysis of the data, indicated that the thermal treatments caused essentially no changes to the electronics of the Au particles; this, and a series of catalysis control experiments, and previous transmission electron microscopy (TEM) studies ruled out particle growth as a contributing factor to the activity loss. …
Co Adsorption On Supported Gold Nanoparticle Catalysts: Application Of The Temkin Model, Christopher J. Pursell, Bert D. Chandler, Maela Manzoli, Flora Boccuzzi
Co Adsorption On Supported Gold Nanoparticle Catalysts: Application Of The Temkin Model, Christopher J. Pursell, Bert D. Chandler, Maela Manzoli, Flora Boccuzzi
Bert D Chandler
The adsorption of CO on the supported gold nanoparticle catalysts Au/TiO2, Au/Fe2O3, and Au/ZrO2 was examined using infrared transmission spectroscopy to quantify the isobaric CO coverage as a function of temperature. The Temkin adsorbate interaction model was then applied to account for the adsorption behavior. To test the general applicability of the Temkin model, this treatment was also applied to three data sets from the literature. This included another real-world catalyst and two model catalysts. All data sets were accurately represented by the Temkin adsorbate interaction model. The resulting thermodynamic metrics are consistent with previous determinations and reflect a particle …
Nabr Poisoning Of Au/Tio2 Catalysts: Effects On Kinetics, Poisoning Mechanism, And Estimation Of The Number Of Catalytic Active Sites, Bert Chandler, Shane Kendell, Hieu Doan, Rachel Korkosz, Lars Grabow, Christopher Pursell
Nabr Poisoning Of Au/Tio2 Catalysts: Effects On Kinetics, Poisoning Mechanism, And Estimation Of The Number Of Catalytic Active Sites, Bert Chandler, Shane Kendell, Hieu Doan, Rachel Korkosz, Lars Grabow, Christopher Pursell
Bert D Chandler
Sodium bromide was used to intentionally poison a commercial Au/TiO2 catalyst with the goals of understanding the nature of halide poisoning and evaluating the number and nature of the catalytic active sites. A series of eight poisoned catalysts were prepared by impregnating the parent catalyst with methanolic solutions of NaBr. Each catalyst was tested with CO oxidation catalysis under differential reactor conditions; O2 reaction orders and Arrhenius activation energies were determined for each material. All of the kinetic data, including a Michaelis−Menten analysis, indicated that the primary effect of adding NaBr was to reduce the number of catalytically active sites. …
Red Meat, Our Health And Alfalfa--Separating Scientific Fact From Opinions, Policy, Politics, And Bureaucracy, Peter Ballerstedt
Red Meat, Our Health And Alfalfa--Separating Scientific Fact From Opinions, Policy, Politics, And Bureaucracy, Peter Ballerstedt
Kentucky Alfalfa and Stored Forage Conference
The general public is becoming increasingly aware of the failure of the official nutritional policy of United States and other countries. Books like Good Calories, Bad Calories: Fats, Carbs, and the Controversial Science of Diet and Health (Taubes, 2008), Why We Get Fat and What To Do About It (Taubes, 2011) and The Big Fat Surprise: Why Butter, Meat and Cheese Belong in a Healthy Diet (Teicholz, 2014) have exposed the disconnect between nutrition science and nutrition policy, and have told the story of how we’ve come to this point in history.
A Study Of Out-Of-Turn Interaction In Menu-Based, Ivr, Voicemail Systems, Saverio Perugini, Taylor J. Anderson, William F. Moroney
A Study Of Out-Of-Turn Interaction In Menu-Based, Ivr, Voicemail Systems, Saverio Perugini, Taylor J. Anderson, William F. Moroney
William F. Moroney
We present the first user study of out-of-turn interaction in menu-based, interactive voice-response systems. Out-ofturn interaction is a technique which empowers the user (unable to respond to the current prompt) to take the conversational initiative by supplying information that is currently unsolicited, but expected later in the dialog. The technique permits the user to circumvent any flows of navigation hardwired into the design and navigate the menus in a manner which reflects their model of the task. We conducted a laboratory experiment to measure the effect of the use of outof- turn interaction on user performance and preference in a …
Video Feature — Banned Books And The Stuart Rose Collection, Robert Brecha, Una Cadegan, John Inglis, Paul Morman
Video Feature — Banned Books And The Stuart Rose Collection, Robert Brecha, Una Cadegan, John Inglis, Paul Morman
Paul J. Morman
A faculty panel discussion in two sessions:
Session 1:
The Index: Una Cadegan (history) looks at the current scholarship on the Index of Forbidden Books.
Galileo: Robert Brecha (physics) highlights the banning of Galileo and observational science.
Session 2:
Thomas Aquinas: John Inglis (philosophy) speaks on the banning of Thomas Aquinas's Summa Theologica, the most important book in Catholic intellectual tradition.
Descartes and the Index of Forbidden Books: Paul Morman (history, Distinguished Service Professor) highlights the book by Descartes that he was not allowed to study while a student at UD in the 1960s.
Grazing Alfalfa: Real Cost Of "Fear" Of Bloat, S. Ray Smith, Kenneth H. Burdine, Jeff Lehmkuhler
Grazing Alfalfa: Real Cost Of "Fear" Of Bloat, S. Ray Smith, Kenneth H. Burdine, Jeff Lehmkuhler
Kentucky Alfalfa and Stored Forage Conference
In the Southeast, including legumes like alfalfa and clover in pastures provides many advantages. It reduces the impact of fescue toxicosis, provides free nitrogen, and improves pasture quality leading to increased animal performance. Individual animal performance is greater on grass/legume pastures compared to performance on similar monoculture grass stands. Daily gains for steers grazing clover-fescue swards is improved compared to straight tall fescue pastures (Figure 1). Improved performance is partially due to greater forage intakes. This practice is sound management even though legume bloat is a risk to livestock. If one considers the number of cattle grazing pastures containing legumes …
What's Required To Break The "Beef Per Acre" Kentucky Record, Kenneth R. Johnson
What's Required To Break The "Beef Per Acre" Kentucky Record, Kenneth R. Johnson
Kentucky Alfalfa and Stored Forage Conference
As I approach the task that Garry assigned me, I ask the question, “Do I really want to attempt to produce 1400 or more pounds of beef per acre?” An easy answer is “yes,” but more likely “no.” Most farmers I know, full or part time have all they can do now and to reach record levels of anything requires much more time and management. I am going to attempt to discuss the steps I think that will be required to reach record breaking production. Higher gains are certainly possible. We know alfalfa can produce 8 to 10 tons of …
Alfalfa Is Our Family Farming Operation, Myron Ellis
Alfalfa Is Our Family Farming Operation, Myron Ellis
Kentucky Alfalfa and Stored Forage Conference
Ellis Family Farm is a 5th generation family farm located in Harrodsburg, KY. Currently we farm 1250 acres total of which 870 acres is owned and the remainder is leased. We buy and resale between 1500-1800 head of feeder cattle per year and have 100 head of brood cows. The cattle operation feed is completely supplied by the first cutting of our 580 acres of alfalfa and alfalfa grass mix hay. From the second cutting on, we produce small square bales of alfalfa for the horse market in four states. Our normal production of square bales ranges between 75,000 and …
Kentucky Alfalfa Conference Reflections After 35 Years, Garry D. Lacefield
Kentucky Alfalfa Conference Reflections After 35 Years, Garry D. Lacefield
Kentucky Alfalfa and Stored Forage Conference
This event today marks the 35th consecutive year we have come together for a full day’s conference featuring "Alfalfa - Queen of the Forages" as the theme and focal point. Only one other state (California) in the U.S. has such an annual event.
Foreword And Recipients Of Kentucky Alfalfa Awards [2015], Garry D. Lacefield, Christi L. Forsythe
Foreword And Recipients Of Kentucky Alfalfa Awards [2015], Garry D. Lacefield, Christi L. Forsythe
Kentucky Alfalfa and Stored Forage Conference
This is the front matter of the proceedings.
A Contribution Toward Better Understanding Of Overbanking Tendency In Fixed-Wing Aircraft, Nihad E. Daidzic
A Contribution Toward Better Understanding Of Overbanking Tendency In Fixed-Wing Aircraft, Nihad E. Daidzic
Journal of Aviation Technology and Engineering
The phenomenon of overbanking tendency for a rigid-body, fixed-wing aircraft is investigated. Overbanking tendency is defined as a spontaneous, unbalanced rolling moment that keeps increasing an airplane’s bank angle in steep turns and must be arrested by opposite aileron action. As stated by the Federal Aviation Administration, the overbanking tendency may lead to a loss of control, especially in instrument meteorological conditions. It was found in this study that the speed differential over wing halves in horizontal turns indeed creates a rolling moment that achieves maximum values for bank angles between 45 and 55 degrees. However, this induced rolling moment …
Taming The Unknown: A History Of Algebra From Antiquity To The Early Twentieth Century, Calvin Jongsma
Taming The Unknown: A History Of Algebra From Antiquity To The Early Twentieth Century, Calvin Jongsma
Faculty Work Comprehensive List
Reviewed Title: Katz, Victor J. and Karen Hunger Parshall. Taming the Unknown: A History of Algebra from Antiquity to the Early Twentieth Century. Princeton, NJ: Princeton University Press, 2014. 485 pages. ISBN 9780691149059
The Fierce Green Fire: Vol 5 Issue 15, Wofford College Environmental Studies Program
The Fierce Green Fire: Vol 5 Issue 15, Wofford College Environmental Studies Program
The Fierce Green Fire
No abstract provided.
Lake Whatcom Monitoring Project 2013/2014 Report, Robin A. Matthews, Michael Hilles, Joan Vandersypen, Robert J. Mitchell, Geoffrey B. Matthews, Katherine Beeler
Lake Whatcom Monitoring Project 2013/2014 Report, Robin A. Matthews, Michael Hilles, Joan Vandersypen, Robert J. Mitchell, Geoffrey B. Matthews, Katherine Beeler
Lake Whatcom Annual Reports
This report is part of an on-going series of annual reports and special project reports that document the Lake Whatcom monitoring program.
This work is conducted by the Institute for Watershed Studies and other departments at Western Washington University. The major objective of this program is to provide long-term baseline water quality monitoring in Lake Whatcom and selected tributaries. Each section contains brief explanations about the water quality data, along with discussions of patterns observed in Lake Whatcom.
Computer Modeling The Incursion Patterns Of Marine Invasive Species, Matthew W. Johnston
Computer Modeling The Incursion Patterns Of Marine Invasive Species, Matthew W. Johnston
HCNSO Student Theses and Dissertations
Abstract Not Available.
Systems And Methods For Diagnosis And Treatment Of Psychiatric Disorders, Ganesh Gopalakrishna, Sriram Chellappan
Systems And Methods For Diagnosis And Treatment Of Psychiatric Disorders, Ganesh Gopalakrishna, Sriram Chellappan
Computer Science Faculty Research & Creative Works
A device for diagnosing and treating psychiatric disorders is described. The device may be configured to provide a graphical user interface that enables a user to select at least one of: entering information related to a diagnosis of the psychiatric disorder and alleviating symptoms caused by the psychiatric disorder. Upon a user selecting entering information related to the diagnosis of a psychiatric disorder, the device may receive information related to the diagnosis of the psychiatric disorder. The device may determine the severity of a user's condition based at least in part on the received information. The device may provide a …
Museum Exhibit Hints At Miami: 2100, Alex Blencowe
Museum Exhibit Hints At Miami: 2100, Alex Blencowe
Sea Level Rise Collection
Description of the exhibit "Miami 2100: Envisioning a Resilient Second Century" by FIU Architecture and Arts students that created models of predicted sea level rise and flooding in the Miami, Orlando and Key West areas in February 2015.
Thermal Fluctuations Tunneling In Doped Conjugated Polymers, Troy C. Stedman
Thermal Fluctuations Tunneling In Doped Conjugated Polymers, Troy C. Stedman
USF Tampa Graduate Theses and Dissertations
The possibility of using conducting polymers as organic alternatives to widely used inorganic materials for thermoelectric (TE) applications has received much attention in the past few decades. Since conducting polymers are generally inefficient compared to inorganic TE materials, research into their underlying transport mechanisms is required to improve their efficiency. We use a model based on the effects of local thermal fluctuations to characterize the transport in conducting polymer composites. With this model, full linear responses for the current and electronic heat current are obtained. From these responses, the local temperature dependent conductivity, electronic contribution to the thermal conductivity, and …
The Infrared Spectrum Of The He-C2d2 Complex, N. Moazzen-Ahmadi, A. R. W. Mckellar, Berta Fernandez, David Farrelly
The Infrared Spectrum Of The He-C2d2 Complex, N. Moazzen-Ahmadi, A. R. W. Mckellar, Berta Fernandez, David Farrelly
Chemistry and Biochemistry Faculty Publications
Spectra of the helium-acetylene complex are elusive because this weakly bound system lies close to the free rotor limit. Previously, limited assignments of He–C2D2 transitions in the R(0) region of the ν3 fundamental band (≈2440 cm−1) were published. Here, new He–C2D2 infrared spectra of this band are obtained using a tunable optical parametric oscillator laser source to probe a pulsed supersonic slit jet expansion from a cooled nozzle, and the analysis is extended to the weaker and more difficult P(1) and R(1) regions. A term value approach is used to obtain a consistent set of “experimental” energy levels. …
Fermions In An Ads₃ Black Hole Background And The Gauge-Gravity Duality, C. Fosco, E. Moreno, F. Schaposnik
Fermions In An Ads₃ Black Hole Background And The Gauge-Gravity Duality, C. Fosco, E. Moreno, F. Schaposnik
Enrique F. Moreno
We study a model whose dynamics is determined by a Maxwell Lagrangian coupled to a complex scalar and a Dirac fermion field, in an AdS3 black hole background. Our study is performed within the context of the Euclidean formalism, in terms of an effective action Seff that results from integrating out the fermion field. In particular, Seff includes an induced parity breaking part which reduces, in the weak coupling limit, to Chern-Simons terms for both the gauge and spin connections, with temperature dependent coefficients. We find numerically the effective action minimum and, applying the AdS/CFT correspondence, we discuss the properties …