Digital Commons Network^™

Polymorphic Ros Scavenging Revealed By Cccp In A Lizard, Mats Olsson, Mark Wilson, Caroline Isaksson, Tobias Uller

Mark R Wilson

Ingestion of antioxidants has been argued to scavenge circulating reactive molecules (e.g., free radicals), play a part in mate choice (by mediating access to this important resource), and perhaps increase life span. However, recent work has come to question these relationships. We have shown elsewhere in the polychromatic lizard, Ctenophorus pictus, that diet supplementation of carotenoids as antioxidants does not depress circulating natural reactive oxygen species (ROS) levels and leads to no corresponding improvement of color traits. However, a much stronger test would be to experimentally manipulate the ROS levels themselves and assess carotenoid-induced ROS depression. Here, we achieve this …

Photochromic 3-Dimensional Actuator Based On An Uncrosslinked Liquid Crystal Elastomer, Hyong Choi, Kwang-Un Jeong, Liang-Chy Chien, Myong-Hoon Lee

Liang-Chy Chien

A chemically programmed photochromic liquid crystal (LC) polymer was newly synthesized and used to fabricate an actuator exhibiting reversible photo-activated bending behavior at ambient temperature. Due to the lack of chemical crosslinking in this photochromic LC elastomer, it was possible to fabricate an actuator in the form of fiber or film by melt or solution processing, respectively. The three-dimensional (3D) bending of the film actuator can be precisely controlled in various directions by polarized ultraviolet (UV) light. The novel photochromic LC elastomer, exhibiting reversible photomechanical bending with controlled directions at room temperature, is beneficial for the realization of wireless remote-controlled …

Modulation Analysis Of Boundary Induced Motion Of Optical Solitary Waves In A Nematic Liquid Crystal, Tim Marchant

Tim Marchant

We consider the motion of a solitary wave, a nematicon, in a finite cell filled with a nematic liquid crystal. A modulation theory is developed to describe the boundary-induced bouncing of a nematicon in a one-dimensional cell and it is found to give predictions in very good agreement with numerical solutions. The boundary-induced motion is then considered numerically for a two-dimensional cell and a simple extension of the modulation theory from one to two space dimensions is then made, with good agreement being found with numerical solutions for the nematicon trajectory. The role of nematicon shape and relative position to …

The Effect Of Catalyst Of The Reaction Of P-Hydroxybenzaldehyde With Acetic Anhydride: A Discovery-Oriented Green Laboratory Experiment, Ram Mohan, Matthew Huddle, Michael Devore

Ram S. Mohan

No abstract provided.

Using A Personal Response System, John Hawkins, Bruce Mclean

John B. Hawkins

Over the years, we have consistently used the latest technology in our classes. It has made us more organized and has increased the understanding of our students. Now we have combined our old presentations and drawings from the past and placed them in PowerPoint presentations with imbedded questions. These questions can be multiple choice or questions that have numerical answers. Our University has settled upon one company to provide a personal response system, eInstruction’s Classroom Performance System (CPS). The students answer each question as it appears and we are able to evaluate our lectures in real time. Applets can still …

A Simple Sn2 Reaction For The Undergraduate Organic Laboratory, John Esteb

John Esteb

A simple procedure for the synthesis of n-butyl naphthyl ether is presented. This procedure represents an easy method for the production of an aryl ether by an SN2 reaction, uses ethanol as an environmentally friendly solvent, and does not require the use of a lachrymator. Product isolation is done by pouring the reaction mixture over ice and collecting the solid by suction filtration. Students typically recover from 7–95% of the ether.

Note: Link is to the article in a subscription database available to users affiliated with Butler University. Appropriate login information will be required for access. Users not affiliated with …

Progress Toward Sustainability: A Report Card And A Recommended Agenda, John Dernbach

John C. Dernbach

No abstract provided.

Mixture Of Random Effects For Individual Learning Curves, Sally Wood, Edward Cripps, Robert Wood

Sally Wood

In the pyschology literature individuals are often classified as entity theorists or incrementalists. In this paper we explore the different learning behaviours over time of these two groups. To assess learning an individual is assigned a task and their performance on the task is measured over a number of trials. Learning behaviour is modelled as a mixture of two random effects, where the random effects components of the mixture correspond to increased learning and spiralling behaviour. We find significant differences in the learning behaviours of the two groups. Specifically those individuals who are categorized as entity theorists are more likely …

The Mysterious Disappearance Of Ettore Majorana - Art. No. 012019, Br Holstein

Barry R Holstein

We review the short but interesting life of Ettore Majorana.

A Flexible Solvolysis Experiment For The Undergraduate Organic Laboratory, John Esteb, John Magers, Luanne Mcnulty, Paul Morgan, Kathryn Tindell, Anne Wilson

John Esteb

A simple SN1 reaction is presented that uses bromotriphenylmethane and a range of oxygen-based nucleophiles including water and various alcohols. This procedure represents a process that affords easy isolation of solid products. Typical student yields ranged from 17–128% with the average yield of 50%. Students obtained products with a melting point range of 140 to 164 °C. This procedure offers multiple ways to adapt this experiment from a straight solvolysis reaction to a discovery-based experiment that explores the effect of nucleophile (for a more advanced group) or the method of product isolation. Note: Link is to the article in a …

Wine Purchase Decisions And Consumption Behaviors: Insights From A Probability Sample Drawn In Auckland, New Zealand, Peter Danaher

Peter Danaher

No abstract provided.

Building A Global Culture Of Software Quality, Robert Yacobellis

Robert H Yacobellis

No abstract provided.

A Sensitivity Matrix Methodology For Inverse Problem Formulation, Alex Calpaldi

Alex Capaldi

We propose an algorithm to select parameter subset combinations that can be estimated using an ordinary least-squares (OLS) inverse problem formulation with a given data set. First, the algorithm selects the parameter combinations that correspond to sensitivity matrices with full rank. Second, the algorithm involves uncertainty quantification by using the inverse of the Fisher Information Matrix. Nominal values of parameters are used to construct synthetic data sets, and explore the effects of removing certain parameters from those to be estimated using OLS procedures. We quantify these effects in a score for a vector parameter defined using the norm of the …

How Often Versus How Long: The Interplay Of Contact Frequency And Relationship Duration In Customer Perceptions Of Service Relationship Strength, Peter Danaher, Tracey Dagger, Brian Gibbs

Peter Danaher

This study investigates the effects of customer contact frequency and relationship duration on customer-reported relationship strength (CRRS). Although relationships are understood to develop through an incremental process of time and encounters, exactly how frequency and duration interactively influence CRRS is not known. We embed our analysis of these two relationship-quantity variables within a larger model that considers the effects of relationship-quality variables—commitment, trust and satisfaction—on CRRS. We additionally control for customer demographics and service type. Using a fully national sample of 591 service consumers, we find that both contact frequency and relationship duration have a positive effect on CRRS, and …

Variation In Levels Of Reactive Oxygen Species Is Explained By Maternal Identity, Sex And Body-Size-Corrected Clutch Size In A Lizard, Mark Wilson, Mats Olsson, Tobias Uller, Caroline Isaksson, Beth Mott

Mark R Wilson

No abstract provided.

A Perturbation Drbem Model For Weakly Nonlinear Wave Run-Ups Around Islands, Tim Marchant

Tim Marchant

In this paper, the dual reciprocity boundary element method (DRBEM) based on the perturbation method is presented for calculating run-ups of weakly nonlinear long waves scattered by islands. Under the assumption that the incident waves are harmonic, the time-dependent nonlinear Boussinesq equations are transformed into three time-independent linear equations by using the perturbation method, where, besides nonlinearity ε, the dispersion μ2 is also included in the perturbed expansion. The first-order solution η0 is found by using the linear long-wave equations. Then η0 is used in two second-order governing equations related to the dispersion and nonlinearity, respectively. Since no any omission …

Motorola's Approach To Software Dfss, Robert Yacobellis

Robert H Yacobellis

No abstract provided.

Easy Steps To Success: A Graphing Calculator Guide, Lisa Yocco, Ronald Harshbarger

Lisa S. Yocco

No abstract provided.

Priors For A Bayesian Analysis Of Extreme Values, Sally Wood, Julian Wang

Sally Wood

This article proposes a new prior specification for a Bayesian analysis of the k largest order statistics model. We show that using Jeffreys priors for the end-point and shape parameters of the k largest order statistics model leads to biased estimates of the shape parameter for small to medium sample sizes and to the posterior mode of the end-point being equal to the most extreme observed value. We propose a conjugate prior for the shape parameter and a prior for the end-point which removes the posterior mode at the most extreme observed value while remaining uninformative for values of the …

The Chaperone Action Of Clusterin And Its Putative Role In Quality Control Of Extracellular Protein Folding, Amy Wyatt, Justin Yerbury, Stephen Poon, Rebecca Dabbs, Mark Wilson

Mark R Wilson

The function(s) of clusterin may depend upon its topological location. A variety of intracellular "isoforms" of clusterin have been reported but further work is required to better define their identity. The secreted form of clusterin has a potent ability to inhibit both amorphous and amyloid protein aggregation. In the case of amorphous protein aggregation, clusterin forms stable, soluble high-molecular-weight complexes with misfolded client proteins. Clusterin expression is increased during many types of physiological and pathological stresses and is thought to function as an extracellular chaperone (EC). The pathology of a variety of serious human diseases is thought to arise as …

Agenda For A Sustainable America, John Dernbach

John C. Dernbach

No abstract provided.

Toward Femtosecond Dove Spectroscopy Of Solute-Solvent Interactions, Sean Kern, Diana Urbanek, Mark Berg

Sean J. Kern

No abstract provided.

An Agenda For Sustainable Communities, John Dernbach

John C. Dernbach

This article summarizes progress toward sustainable communities in the United States since the United Nations Conference on Environment and Development (or Earth Summit) in 1992. It shows the significant initiative that many communities have undertaken and identifies existing state and federal laws as impediments to achieving sustainability. This article also makes recommendations for further progress based on what we have already learned about how to achieve sustainable communities. They include not only more and strengthened sustainable community efforts, and broad state and federal legal support, but also deep engagement of all affected citizens. This article is based primarily on three …

The Architecture Of Platforms: A Unified View, Carliss Y. Baldwin, C. Jason Woodard

C. Jason Woodard

No abstract provided.

Highly Fluorous Complexes Of Ruthenium And Osmium And Their Solubility In Supercritical Carbon Dioxide, Brad Berven, George Koutsantonis, Brian Skelton, Robert Trengove, Allan White

Brad Berven

A series of ruthenium and osmium complexes containing highly fluorous diphosphine ligands FPPF = (F13C6C6H4-p)2P(CH2)2P(p-C6H4C6F13)2 (dfppe) and (F13C6C6H4-p)2P(CH2)3P(p-C6H4C6F13)2 (dfppp) has been prepared. The fluorous diphosphine ligands incorporate four C6F13 “fluoro-ponytails”, and these have been effective in solubilizing the complexes in supercritical carbon dioxide (scCO2). Precise solubility measurements in scCO2 were performed for some of the complexes. The new complexes [MX2(FPPF)2] and [MX(FPPF)(η-C5H5)], M = Ru, Os, X = Cl, Br, have been characterized by a number of spectroscopic techniques and their electrochemical properties measured, three of the ruthenium complexes also being characterized by single-crystal X-ray studies. The noncovalent interactions observed …

Model, Properties, And Applications Of Context-Aware Web Services, Stephen Yang, Jia Zhang, Angus Huang

Jia Zhang

No abstract provided.

Environmental Law: The Policy Implications Of The Reaction To Climate Change, Jeffrey Sutton, Jonathan Adler, John Dernbach, Steven Hayward, Jeremy Rabkin

John C. Dernbach

No abstract provided.

Closed Monochromatic Bishops'’ Tours, Joe Demaio

Joe DeMaio

Density Functional Calculation Of The Structure And Electronic Properties Of CuNON (N = 1−4) Clusters, Gyun-Tack Bae, Randall W. Hall

Randall W. Hall

Ab Initio Study Of The Formation And Degradation Reactions Of Chlorinated Phenols, Cheri A. Mcferrin, Randall W. Hall, Barry Dellinger

Randall W. Hall