Digital Commons Network^™

Crow's Nest, August 22, 2011, Crow's Nest Staff

Crow's Nest

The August 22, 2011, issue of the Crow's Nest.

Glucose Biosensor Using Electrospun Mn2o3-Ag Nanofibers, Shan Huang

Master's Theses

The highly porous Mn₂O₃-Ag nanofibers were fabricated by a facile two-step procedure (electrospinning and calcination) and then employed as the immobilization matrix for glucose oxidase (GOD) to construct an amperometric glucose biosensor. A notable enhancement of direct electron transfer between GOD and the electrode is observed at the Mn₂O₃-Ag-GOD modified electrode with a fast electron transfer rate constant. The biosensor also shows fast response to glucose, high sensitivity (40.60 μA×mM^-1×cm^-2), low detection limit (1.73 µM at S/N=3), low K_m,app value and excellent selectivity. These results indicate that …

The Bg News August 22, 2011, Bowling Green State University

BG News (Student Newspaper)

The BGSU campus student newspaper. August 22, 2011. Volume 102-Issue 2.

Medical School Watercooler Newsletter - August 21, 2011, Lindsey Lyle

Watercooler Newsletter

This is the August 21, 2011 edition of the Frederick P. Whiddon College of Medicine's newsletter - Watercooler.

Contents Include

• Blood Drive To Be Held Aug. 26
• Med School Café - Expert Advice for the Community
• Former USA College of Medicine Faculty Member Appointed Dean of Howard University College of Medicine
• USA College of Medicine Mourns Loss of Dr. Joseph Coggin
• Dr. Gregory W. Rutecki Elected Membership in 'The Leading Physicians of the World'

Plasmonic Nanogels With Robustly Tunable Optical Properties, Tao Cong, Satvik N. Wani, Georo Zhou, Elia Baszczuk, Radhakrishna Sureshkumar

Biomedical and Chemical Engineering - All Scholarship

Low viscosity fluids with tunable optical properties can be processed to manufacture thin film and interfaces for molecular detection, light trapping in photovoltaics and reconfigurable optofluidic devices. In this work, self-assembly in wormlike micelle solutions is used to uniformly distribute various metallic nanoparticles to produce stable suspensions with localized, multiple wavelength or broad-band optical properties. Their spectral response can be robustly modified by varying the species, concentration, size and/or shape of the nanoparticles. Structure, rheology and optical properties of these plasmonic nanogels as well as their potential applications to efficient photovoltaics design are discussed.

Investigation Of Dose Perturbations And The Radiographic Visibility Of Potential Fiducials For Proton Radiation Therapy Of The Prostate, Jessie Y. Huang, Wayne D. Newhauser, X. Ronald Zhu, Andrew K. Lee, Rajat J. Kudchadker

Faculty Publications

Image guidance using implanted fiducial markers is commonly used to ensure accurate and reproducible target positioning in radiation therapy for prostate cancer. The ideal fiducial marker is clearly visible in kV imaging, does not perturb the therapeutic dose in the target volume and does not cause any artifacts on the CT images used for treatment planning. As yet, ideal markers that fully meet all three of these criteria have not been reported. In this study, 12 fiducial markers were evaluated for their potential clinical utility in proton radiation therapy for prostate cancer. In order to identify the good candidates, each …

Design-Grounded Assessment: A Framework And A Case Study Of Web 2.0 Practices In Higher Education, Yu-Hui Ching, Yu-Chang Hsu

Educational Technology Faculty Publications and Presentations

This paper synthesises three theoretical perspectives, including sociocultural theory, distributed cognition, and situated cognition, into a framework to guide the design and assessment of Web 2.0 practices in higher education. In addition, this paper presents a case study of Web 2.0 practices. Thirty-seven online graduate students participated in a small-group collaborative concept mapping activity using Web 2.0 applications (e.g. Webspiration) to construct sophisticated understanding of instructional design processes. The analysis of this case focuses on different assessment strategies adopted to ensure students' successful participation in such technology-rich collaborative context. This case study concludes that a shared goal needs to …

Engaging Disenfranchised Urban Youth In Science Learning, Luis Alberto D'Elia, Diane Wishart

Higher Learning Research Communications

The purpose of this work was to elicit the perceptions of science educators regarding enhancing opportunities to retain disenfranchised students in secondary schools. The article shows selective international perspectives on how teachers, university professors, and researchers in teacher education programs strive to support school completion for disenfranchised students. Interviews were conducted in Canada and Spain. Selective sampling was used in order to focus interviews on individuals with particular expertise on the topic and individuals who work in cooperation with colleagues engaged in similar work. Anecdotes, comments, and opinions from the interviews support the basic contentions in the article. The authors …

Assessment Of Ph Variability At A Coastal Co2 Vent For Ocean Acidification Studies, Philip Kerrison, Jason M. Hall-Spencer, David J. Suggett, Leanne J. Hepburn, Michael Steinke

School of Biological and Marine Sciences

Marine environments with naturally high CO2 concentrations have become important research sites for studying the impacts of future ocean acidification on biological processes. We conducted high temporal resolution pH and temperature measurements in and around a shallow (2.5–3 m) CO2 vent site off Ischia, Italy in May and June 2008. Loggers were deployed at five stations to monitor water at both the surface and benthos. Our reference station, 500 m from the CO2 vent, had no noticeable vent influence. It had a naturally high and stable benthic pH (mean 8.16, inter-quartile range (IQ): 8.14–8.18) fluctuating with diel periodicity, presumably driven …

External Reforming Sofc Coupled With Biomass-To-Syngas Reactor, Amit Patel

Mechanical Engineering Master's Theses

This thesis introduces a thermodynamic model of an external reforming SOFC coupled with a biomass-to-syngas reactor in order to calculate energy and power that can be extracted from the fuel. Some of this energy will be used for electrical work and some of this energy will be used to provide heat to the reactor to drive the endothermic reactions occurring throughout the process. We analyzed four different feedstocks for their fuel cell heat dissipation and fuel cell power characteristic: pure syngas, pure carbon-derived syngas, coal-derived syngas, and biomass-derived syngas. Pure syngas consists of only CO and H2 while the other …

Temperament Predicts The Likelihood A Child Will Succumb To Bad Influences, Jim Bakken

Browse All News

No abstract provided.

Fluid Structure And Boundary Slippage In Nanoscale Liquid Films, Nikolai V. Priezjev

Mechanical and Materials Engineering Faculty Publications

The book describes the concerted efforts of a large European research project and the achievements of additional leading research groups. The reported knowledge and expertise should support in the innovation and integration of often separated unitary processes. Sampling, cell lysis and DNA/RNA extraction, DNA hybridisation detection micro- and nanosensors, microfluidics, together also with computational modelling and risk assessment can be integrated in the framework of the current and evolving European regulations and needs. The development and uptake of molecular methods is revolutionizing the field of waterborne pathogens detection, commonly performed with time-consuming cultural methods. The molecular detection methods are enabling …

The Expression Of T-Box (Tbx3) In The Bovine Mammary Gland, Maria L. Procopio Ms.

Master's Theses

Development of the bovine mammary gland is a complex process that is regulated by several hormones, growth factors and transcription factors including but not limited to growth hormone (GH), insulin-like growth factor (IGF)-I and T-box (Tbx)2 and 3. Tbx2 and Tbx3 are transcription factors required for mammary gland development in humans and known to regulate cell cycle. In addition, there is recent evidence that GH increases expression of Tbx3 in osteoblasts independent of IGF-I. Based on these findings, we hypothesized GH and IGF-I will increase Tbx2 and Tbx3 expression in bovine mammary epithelial cells (MEC), the cell responsible for milk …

Dreams And Dust In The Black Hills: Race, Place, And National Identity In America's "Land Of Promise", Elaine Marie Nelson

History ETDs

Indigenous groups that occupied the Black Hills for thousands of years established economic, spiritual, and political connections to the region. Through these relationships, many indigenous people formed their tribal identities in association to this land. Many of these connections with the Black Hills continue to persist in Native American tribes in the present-day. But decades of American western expansion changed indigenous relationships to the region. In 1868, the United States negotiated with the Lakota people the terms of the Fort Laramie Treaty, which established the Great Sioux Reservation and legally guaranteed the Black Hills to the Lakota tribe. When the …

Triplets Turn Titan: Desalvos Begin College Journey Together, Jackie Connelly '12

News and Events (Discontinued Series)

No abstract provided.

Synthesis Of Cyclen Based Receptors And Their Use In Separations Biotechnology., Vivek Kaushik

Theses and Dissertations

A number of purification techniques such as adsorption, centrifugation, chromatography, extraction, distillation, filtration, precipitation etc. to name a few, are commonly used for the purification. However, due to a constant need of purification of even more complex crude mixtures, be it reaction mixtures, various proteins and DNA from cell extracts or medicinal compounds and fragrances from plant extracts, scientists needed to consistently develop new and improved techniques of purification. One such great advancement in the field of chromatography was the development of affinity chromatography. It revolutionized the field of bioseparations technology, and the dream of single stage purification of complex …

Cd40 Is Essential In The Upregulation Of Traf Proteins And Nf-Kappab-Dependent Proinflammatory Gene Expression After Arterial Injury, Zifang Song, Rong Jin, Shiyong Yu, Joshua J. Rivet, Susan S. Smyth, Anil Nanda, D. Neil Granger, Guohong Li

Internal Medicine Faculty Publications

Despite extensive investigations, restenosis, which is characterized primarily by neointima formation, remains an unsolved clinical problem after vascular interventions. A recent study has shown that CD40 signaling through TNF receptor associated factor 6 (TRAF6) plays a key role in neointima formation after carotid artery injury; however, underlying mechanisms are not clearly elucidated. Because neointima formation may vary significantly depending on the type of injury, we first assessed the effect of CD40 deficiency on neointima formation in 2 injury models, carotid artery ligation and femoral artery denudation injury. Compared with wild-type mice, CD40 deficiency significantly reduced neointima formation and lumen stenosis …

Ros-Drill Automation: Visual Feedback Control And Rotational Motion Tracking, Jhon F. Diaz

Master's Theses

ICSI (intra-cytoplasmic sperm injection) has attracted research interest from both biological and engineering groups. The technology is constantly evolving to perform this procedure with precision and speed. One such development is the contribution of this thesis. We focus on a relatively recent procedure called Ros-Drill^© (rotationally oscillating drill), of which the early versions have already been effectively utilized for the mice. In the first part, we present a procedure to automate a critical part of the operation: initiation of the rotational oscillation, Visual feedback is used to track the pipette tip. Predetermined species-specific penetration depth is successfully utilized …

Age-Related Deficits In Spatial Memory And Hippocampal Spines In Virgin, Female Fischer 344 Rats, Victoria N. Luine, Maureen E. Wallace, Maya Frankfurt

Publications and Research

Effects of aging on memory and brain morphology were examined in aged, 21-month-old, and young, 4-month-old, Fischer 344 female rats. Spatial memory was assessed using the object placement task, and dendritic spine density was determined on pyramidal neurons in the hippocampus following Golgi impregnation. Consistent with previous studies, aged females showed poorer object placement performance than young subjects. Young subjects significantly discriminated the location of objects with a 1.5-hour intertrial delay while aged subjects did not. Spine density of basal dendrites on CA1 pyramidal cells was 16% lower in the aged subjects as compared to the young subjects. No differences …

Insightful Problem Solving In An Asian Elephant, Preston Foerder, Marie Galloway, Tony Barthel, Donald E. Moore Iii, Diana Reiss

Publications and Research

The ‘‘aha’’ moment or the sudden arrival of the solution to a problem is a common human experience. Spontaneous problem solving without evident trial and error behavior in humans and other animals has been referred to as insight. Surprisingly, elephants, thought to be highly intelligent, have failed to exhibit insightful problem solving in previous cognitive studies. We tested whether three Asian elephants (Elephas maximus) would use sticks or other objects to obtain food items placed out-of-reach and overhead. Without prior trial and error behavior, a 7-year-old male Asian elephant showed spontaneous problem solving by moving a large plastic cube, on …

A Neurocomputational Model Of Stimulus-Specific Adaptation To Oddball And Markov Sequences., Robert Mill, Martin Coath, Thomas Wennekers, Susan L. Denham

School of Engineering, Computing and Mathematics

Stimulus-specific adaptation (SSA) occurs when the spike rate of a neuron decreases with repetitions of the same stimulus, but recovers when a different stimulus is presented. It has been suggested that SSA in single auditory neurons may provide information to change detection mechanisms evident at other scales (e.g., mismatch negativity in the event related potential), and participate in the control of attention and the formation of auditory streams. This article presents a spiking-neuron model that accounts for SSA in terms of the convergence of depressing synapses that convey feature-specific inputs. The model is anatomically plausible, comprising just a few homogeneously …

Perfluorochemical Liquid-Adenovirus Suspensions Enhance Gene Delivery To The Distal Lung., Jeffrey A Kazzaz, Marlene S Strayer, Jichuan Wu, Daniel J Malone, Hshi-Chi Koo, Thomas H Shaffer, Jonathan M Davis, David S Strayer, Marla R Wolfson

Department of Pathology, Anatomy, and Cell Biology Faculty Papers

WE COMPARED LUNG DELIVERY METHODS OF RECOMBINANT ADENOVIRUS (RAD): (1) rAd suspended in saline, (2) rAd suspended in saline followed by a pulse-chase of a perfluorochemical (PFC) liquid mixture, and (3) a PFC-rAd suspension. Cell uptake, distribution, and temporal expression of rAd were examined using A549 cells, a murine model using luciferase bioluminescence, and histological analyses. Relative to saline, a 4X increase in transduction efficiency was observed in A549 cells exposed to PFC-rAd for 2-4 h. rAd transgene expression was improved in alveolar epithelial cells, and the level and distribution of luciferase expression when delivered in PFC-rAd suspensions consistently peaked …

Genetic Organisation, Mobility And Predicted Functions Of Genes On Integrated, Mobile Genetic Elements In Sequenced Strains Of Clostridium Difficile, Michael S.M. Brouwer, Philip J. Warburton, Adam P. Roberts, Peter Mullany, Elaine Allan

School of Biomedical Sciences

No abstract provided.

Letters To The Editor

Jefferson Journal of Psychiatry

Letters to the Editor for the Jefferson Journal of Psychiatry, Volume 3, Number 2, July 1985.

Some Reflections On Termination: Transference And Countertransference, Frederick L. Becker, Jr, Md

Jefferson Journal of Psychiatry

INTRODUCTION

Nearing the completion of my psychiatric residency, I ingenuously told my supervisor that I needed to know the steps of termination in therapy with patients. On the surface, this request reflected an awareness of the issues at hand and their importance. Beneath lay ambivalence and countertransference anxiety . For the graduating resident, time ordinarily invested in thought and study fills with practical considerations of job hunting and starting a practice. The resident' s own unresolved and unsettling separation issues can further push aside therapeutic considerations for his patients. Termination, the art of the veteran therapist, becomes an unwelcome …

The Use Of Light In The Treatment Of Depression, Mark D. Miller, Md

Jefferson Journal of Psychiatry

INTRODUCTION

Light has recently been reported to be a useful treatment in affective illness (1,2, 3, 4, 5, 6). What type of patients respond to this type of treatment ? What is the theoretical mechanism of action of light therapy and what are the implications of this research for the existing theories of affective illness? This review will seek answers to these questions by summarizing the recently reported studies of the effects of light on depression , by reviewing the pertinent contributions from neuroanatomy, endocrinology and circadian rhythm physiology, and, finally, by suggesting some points of integration of these recent …

August 17, 2011 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

August 17, 2011: Check Out James Wood On The Joy Of Secularism, Bruce Ledewitz

Hallowed Secularism

Blog post, “Check Out James Wood on The Joy of Secularism“ discusses politics, theology and the law in relation to religion and public life in the democratic United States of America.

We Are...Marshall, August 17, 2011, Office Of Marshall University Communications

We Are ... Marshall: the Newsletter for Marshall University 1999-2023

No abstract provided.

Human Pathogen Shown To Cause Disease In The Threatened Elkhorn Coral Acropora Palmata, Kathryn Patterson Sutherland, Sameera Shaban, Jessica L. Joyner, James W. Porter, Erin K. Lipp

Faculty Publications

Coral reefs are in severe decline. Infections by the human pathogen Serratia marcescens have contributed to precipitous losses in the common Caribbean elkhorn coral, Acropora palmata, culminating in its listing under the United States Endangered Species Act. During a 2003 outbreak of this coral disease, called acroporid serratiosis (APS), a unique strain of the pathogen, Serratia marcescens strain PDR60, was identified from diseased A. palmata, human wastewater, the non-host coral Siderastrea siderea and the corallivorous snail Coralliophila abbreviata. In order to examine humans as a source and other marine invertebrates as vectors and/or reservoirs of the APS pathogen, challenge experiments …