Digital Commons Network^™

Agricultural Research Magazine February 2012

Agricultural Research Magazine

Agricultural Research Magazine February 2012 whole issue

Fighting Nitrate in the Trenches

Multi-Pronged Fight Against Zebra Chip Disease In Potatoes, Jan Suszkiw

Agricultural Research Magazine

Thanks to the investigations of scientiststurned- detectives, potato growers in the western United States and abroad now know the identities of the pathogen and insect responsible for outbreaks of the costly tuber disease known as “zebra chip.”

So named for the dark stripes it forms inside afflicted tubers when cut and fried to make chips or cooked at high temperatures for other dishes, zebra chip has caused millions of dollars in production and processing losses since its first reported U.S. occurrence in potato fields near McAllen and Pearsall, Texas, in 2000. The disease, whose above-ground symptoms include necrosis and purplish, …

February 1, 2012 Cal Poly Report, Public Affairs Office

Cal Poly Report

No abstract provided.

Community Leader, Vol. 10, No. 02, University Of Dayton. Fitz Center For Leadership In Community

Newsletter: Community Leader

News and notes from the University of Dayton Fitz Center for Leadership in Community.

Organizations As Systems In Crisis: Characteristics And Behaviors Of Successful Leaders, Dennis Paul Gonzales

Organization, Information and Learning Sciences ETDs

Given the increasingly complex and fluid nature of organizations today, there is an urgent need to study the role that leadership can play in helping organizations to successfully navigate through difficult and turbulent times. This dissertation investigated the journey of six participants who served as leaders in organizations during periods of change and turmoil. An interpretive phenomenological approach was the primary method of data collection, analysis, and interpretation used to organize the data gathered primarily through interviews with the participants. Personal experience, as well as current leadership and change theories served as the background and frame of reference for this …

A Look In The Mirror: Self-Development And Transformational Learning In Medical Students, Mary Elizabeth Walcher

Organization, Information and Learning Sciences ETDs

Given the call for change in medical school curriculum towards a more humanistic approach, it remains clear that there is an urgent need to study the effects of personal development classes on medical students skill level. Using participants from an ethical influence communications class, this study explored the impact of the use of reflection on personal awareness and professional competence skills in second and third year medical students. A total of 230 reflection papers from 46 medical students were analyzed using CAQDAS — computer assisted qualitative data analysis system-- with Atlas ti 6.2. Personal interviews (n=11) followed for clarification and …

Baseball Media Guide 2012, Wofford College. Department Of Athletics

Media Guides

No abstract provided.

Daily Announcements February 2012, Wofford College. Office Of Marketing And Communications

Communications Office Daily Announcements

No abstract provided.

The Design And Fabrication Of A Microfluidic Reactor For Synthesis Of Cadmium Selenide Quantum Dots Using Silicon And Glass Substrates, Peter Robert Gonsalves

Master's Theses

A microfluidic reactor for synthesizing cadmium selenide (CdSe) quantum dots (QDs) was synthesized out of a silicon wafer and Pyrex glass. Microfabrication techniques were used to etch channels into the silicon wafer. Holes were wet-drilled into the Pyrex glass using a diamond-tip drill bit. The Pyrex wafer was anodically bonded to the etched silicon wafer to enclose the microfluidic reactor. Conditions for anodic bonding were created by exposing the stacked substrates to 300V at ~350oC under 5.46N of force. A syringe containing a room temperature CdSe solution was interfaced to the microfluidic reactor by using Poly (dimethylsiloxane) (PDMS) as an …

The Cresset (Vol. Lxxv, No. 3, Lent), Valparaiso University

The Cresset (archived issues)

No abstract provided.

Mole Street Journal, January 2012, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.

Borrelia Burgdorferi Requires The Alternative Sigma Factor Rpos For Dissemination Within The Vector During Tick-To-Mammal Transmission, Star M. Dunham-Ems, Melissa J. Caimano, Justin D. Radolf

UCHC Articles - Research

While the roles of rpoSBb and RpoS-dependent genes have been studied extensively within the mammal, the contribution of the RpoS regulon to the tick-phase of the Borrelia burgdorferi enzootic cycle has not been examined. Herein, we demonstrate that RpoS-dependent gene expression is prerequisite for the transmission of spirochetes by feeding nymphs. RpoS-deficient organisms are confined to the midgut lumen where they transform into an unusual morphotype (round bodies) during the later stages of the blood meal. We show that round body formation is rapidly reversible, and in vitro appears to be attributable, in part, to reduced levels of Coenzyme A …

Global Patterns Of Tissue-Specific Alternative Polyadenylation In Drosophila, Brenton R. Graveley, Gemma May, Michael O. Duff

UCHC Articles - Research

We analyzed the usage and consequences of alternative cleavage and polyadenylation (APA) in Drosophila melanogaster by using >1 billion reads of stranded mRNA-seq across a variety of dissected tissues. Beyond demonstrating that a majority of fly transcripts are subject to APA, we observed broad trends for 3′ untranslated region (UTR) shortening in the testis and lengthening in the central nervous system (CNS); the latter included hundreds of unannotated extensions ranging up to 18 kb. Extensive northern analyses validated the accumulation of full-length neural extended transcripts, and in situ hybridization indicated their spatial restriction to the CNS. Genes encoding RNA binding …

Nanomaterials-Based Electrochemical Immunosensors For Proteins, James F. Rusling

UCHC Articles - Research

For this special issue on 90 years of polarography, the following personal account describes how my early research in electrochemistry and polarography in the laboratory of Prof. Petr Zuman led to a major research effort in the determination of proteins for cancer detection and monitoring. It reviews the very recent history of nanoparticle labels and multiplexed detection in protein immunosensors. It then describes our journey of discovery that has led to ultrasensitive protein immunosensors achieved by combining nanostructured electrodes with particles labeled with up to ½ million enzymes that can detect down to as little as 1 fg mL^{−1 …}

In Vivo Fate Mapping Identifies Mesenchymal Progenitor Cells, Slavica Pejda, Brya G. Matthews, Dario Repic, Liping Wang, Haitao Li, Mark S. Kronenberg, Xi Jiang, Peter Maye, Douglas J. Adams, David W. Rowe, Hector L. Aguila, Ivo Kalajzic

UCHC Articles - Research

Adult mesenchymal progenitor cells have enormous potential for use in regenerative medicine. However, the true identity of the progenitors in vivo and their progeny has not been precisely defined. We hypothesize that cells expressing a smooth muscle α-actin promoter (αSMA) directed Cre transgene represent mesenchymal progenitors of adult bone tissue. By combining complementary colors in combination with transgenes activating at mature stages of the lineage we characterized the phenotype and confirmed the ability of isolated αSMA+ cells to progress from a progenitor to fully mature state. In vivo lineage tracing experiments using a new bone formation model confirmed the osteogenic …

Under-Treatment Of Depression In Older Persons, Lisa C. Barry

UCHC Articles - Research

Abstract

Background

Due to the cross-sectional design of most existing studies, longitudinal characterization of treatment for depression in older persons is largely unknown.

Method

754 men and women (aged 70+ years) underwent monthly assessments of mental health professional use and 18-month assessments of antidepressant medication use and depressive symptoms over 9 years. Scores of ≥20 on the Center for Epidemiological Studies-Depression (CES-D) scale denoted depression. We evaluated trends in depression treatment over time in the entire sample and among the depressed participants. Using generalized linear models, we determined characteristics associated with receiving treatment for depression in these groups and among …

Essential Features And Rational Design Of Crispr Rnas That Function With The Cas Ramp Module Complex To Cleave Rnas, Sara Olson, Alissa M. Resch, Brenton R. Graveley

UCHC Articles - Research

Small RNAs target invaders for silencing in the CRISPR-Cas pathways that protect bacteria and archaea from viruses and plasmids. The CRISPR RNAs (crRNAs) contain sequence elements acquired from invaders that guide CRISPR-associated (Cas) proteins back to the complementary invading DNA or RNA. Here, we have analyzed essential features of the crRNAs associated with the Cas RAMP module (Cmr) effector complex, which cleaves targeted RNAs. We show that Cmr crRNAs contain an 8-nucleotide 5’ sequence tag (also found on crRNAs associated with other CRISPR-Cas pathways) that is critical for crRNA function and can be used to engineer crRNAs that direct cleavage …

Complex Terrain Leads To Bidirectional Responses Of Soil Respiration To Inter-Annual Water Availability, Diego Andrés Riveros-Iregui, Brian L. Mcglynn, Ryan E. Emanuel, Howard E. Epstein

School of Natural Resources: Faculty Publications

Research on the terrestrial C balance focuses largely on measuring and predicting responses of ecosystem-scale production and respiration to changing temperatures and hydrologic regimes. However, landscape morphology can modify the availability of resources from year to year by imposing physical gradients that redistribute soil water and other biophysical variables within ecosystems. This article demonstrates that the well-established biophysical relationship between soil respiration and soil moisture interacts with topographic structure to create bidirectional (i.e., opposite) responses of soil respiration to inter-annual soil water availability within the landscape. Based on soil respiration measurements taken at a subalpine forest in central Montana, we …

February 2012 Quicknotes, Southern Adventist University

QuickNotes – Advancement e-Newsletter

QuickNotes is an e-newsletter that comes from Advancement at Southern Adventist University. February 2012 edition features the article "Southern Made the News".

Economic Growth, Comparative Advantage, And Gender Differences In Schooling Outcomes: Evidence From The Birthweight Differences Of Chinese Twins, Mark Rosenzweig, Junsen Zhang

Discussion Papers

No abstract provided.

Differentiated Physical Learning Environment, Alisha Thiessen

Master of Education Program Theses

This research study examines the correlation between student academic growth in mathematics in a differentiated physical learning environment and whether or not a differentiated physical environment affects students’ attitudes in mathematics. Previous studies have shown that students gain a deeper connection to the curriculum and have a greater enjoyment of the subject matter when a subject is differentiated (Sondergeld &Schultz, 2008). This study looks specifically at differentiating only the physical learning environment and how this affects student academic growth and attitude towards in mathematics. This study found no statistical evidence of greater academic achievement for those students who were part …

Christian Approach To Secondary Classroom Management, Alysia A. Haveman

Master of Education Program Theses

Teachers at all levels of experience and education find that classroom management is one of the most difficult aspects of the job. This seems especially true for teachers in the secondary classroom where the student’s physical and psychological development seems to be mismatched, and where an attitude of student disillusionment prevails. Since all educators manage their classrooms with some sort of belief system motivating their actions and decisions, it is important for the Christian classroom teacher to closely examine the belief systems which influence current classroom management theories to determine if these belief systems are congruent with a Biblical view …

When To Say “I Love You”: Before Or After Sex?, Singapore Management University

Perspectives@SMU

The words “I love you” is symbolic as it represents romantic devotion; a desire to bring the relationship to a higher, more serious level. It is no wonder that saying it for the first time in a relationship can be daunting.

The C-Zones Framework, John Connolly

International Journal of Aquatic Research and Education

Lifesavers often discuss and analyze rescue and drowning incidents. The C Zones Framework was designed to serve as an aid to such discussions. It is constituted by a number of zones (i.e. C1-concern, C2-crisis, C3-critical, C4-cardio-pulmonary resuscitation (CPR), C5-coma, and C6-conclusions) and is simple enough to be easily remembered and quickly drawn on a piece of paper yet sufficiently detailed to be a serious analytical tool. The use of multicolored or different style lines permits the comparison of numerous casualty variations and outcomes on the one framework. The standard framework has a 20 minute time limit describing the progress of …

Submicron Bioactive Glass Tubes For Bone Tissue Engineering, Jingwei Xie, Eric Blough, Chi-Hwa Wang

MIIR Faculty Research

Herein we describe a method to fabricate submicron bioactive glass tubes using of sol-gel and co-axial electrospinning techniques for applications in bone tissue engineering. Heavy mineral oil and gel solution were delivered by two independent syringe pumps during the co-axial electrospinning process. Subsequently, submicron bioactive glass tubes were obtained by removal of poly(vinyl pyrrolidone) (PVP) and heavy mineral oil via calcination at 600 °C for 5 h. Tubular structure was confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM) imaging. We examined the bioactivity of submicron bioactive glass tubes and fibers and evaluated their biocompatibility taking electrospun poly(ε-caprolactone) …

Characterising The Mucosal And Systemic Immune Responses To Experimental Human Hookworm Infection., Soraya Gaze, Henry J. Mcsorley, James Daveson, Di Jones, Jeffrey M. Bethony, Luciana M. Oliveira, Richard Speare, James S. Mccarthy, Christian R. Engwerda, John Croese, Alex Loukas

Microbiology, Immunology, and Tropical Medicine Faculty Publications

The mucosal cytokine response of healthy humans to parasitic helminths has never been reported. We investigated the systemic and mucosal cytokine responses to hookworm infection in experimentally infected, previously hookworm naive individuals from non-endemic areas. We collected both peripheral blood and duodenal biopsies to assess the systemic immune response, as well as the response at the site of adult worm establishment. Our results show that experimental hookworm infection leads to a strong systemic and mucosal Th2 (IL-4, IL-5, IL-9 and IL-13) and regulatory (IL-10 and TGF-β) response, with some evidence of a Th1 (IFN-γ and IL-2) response. Despite upregulation after …

Capital Plan, Fy2013-2018, University Of Minesota, Morris

Finance Committee

No abstract provided.

Amebocyte Diameter And Density After Partial Exsanguinations In Limulus Polyhemus Hemolymph, Jillian R. Hufgard

Rose-Hulman Undergraduate Research Publications

The presence of endotoxins, a potentially life threatening bacterial contamination in medical devices and supplements, is determined by a product know as Limulus Amebocyte Lysate (LAL). The creation of LAL is known to raise the mortality rates of the crabs that are also seeing population declines due to environmental pressures and fishing industries. Because of the decline in the number of crabs, a method for the production of LAL, outside of the bleeding animals, is necessary. This research worked to quantify systematically the cell size, shape, and concentration of the amebocytes. After baseline data were collected, 40-50% of the hemolymph …

Gsu View, 2012-02, Office Of Marketing And Communications

GSU View

Newsletter published by Governors State University 2007-current.

Environmental Drivers Of Ross River Virus In South-East Tasmania, Australia: Towards Strengthening Public Health Interventions, Angela Werner, Sarah Goater, Scott Carver, Greg Robertson, Philip Weinstein

Global Health Faculty Publications

In Australia, Ross River virus (RRV) is predominantly identified and managed through passive health surveillance. Here, the proactive use of environmental datasets to improve community-scale public health interventions in southeastern Tasmania is explored. Known environmental drivers (temperature, rainfall, tide) of the RRV vector Aedes camptorhynchus are analysed against cumulative case records for five adjacent local government areas (LGAs) from 1993 to 2009. Allowing for a 0- to 3-month lag period, temperature was the most significant driver of RRV cases at 1-month lag, contributing to a 23. 2% increase in cases above the long-term case average. The potential for RRV to …