Digital Commons Network^™

May 2, 2014 Ereporter, University Of Alabama At Birmingham

eReporter (campus newsletter)

No abstract provided.

Daily Eastern News: May 02, 2014, Eastern Illinois University

May

No abstract provided.

The Imaginary Performance Enhancer: Human Growth Hormone, Matthew H. Nanci

Honors Scholar Theses

There is a certain mystique around human growth hormone and the effect it has on athletic performance. Currently there is the notion that using HGH boosts athletic performance, despite a lack of evidence. Studies have actually shown that HGH use does not improve performance and may not prevent injuries, which is what athletes and the public think it does. This is a topic that has not been explored very extensively. Science has established that taking HGH won’t turn an everyday player into an all-star. Steroids have a proven effect; HGH does not and it seems the line between the two …

The Echo: May 2, 2014, Taylor University

2013-2014 (Volume 101)

Upland under construction – A journey home – Top five news events of the week – Online teasers – An out-of-this-world experience – In The Loop – The Bigger Picture – Well played – Minimum support – Caught in the middle – Ask Angelina – Hey Yoder! Why aren’t you wearing that shirt?! – DC Recipe of the week – Echograms #TaylorU -- #TaylorU’s Top Tweets – Fro hope comes miracles – Has Christianity gone Hollywood? – Full-scale success – Down with Dove – Entertainment value – Softball slides into tournament final – Weekly Preview – Golf rallies for second …

The Human Chimera: Legal Problems Arising From Individuals With Multiple Types Of Dna, Robert Russell Granzen

Student Works

No abstract provided.

Montana Kaimin, May 2, 2014, Students Of The University Of Montana, Missoula

Montana Kaimin, 1898-present

Student newspaper of the University of Montana, Missoula.

Experimental Investigations Of The Combination Of A Heat Pipe With Metal Foam Or Foils For Enhancing Heat Transfer During The Melting And Solidification Of A Phase Change Material (Pcm) For Latent Heat Thermal Energy Storage Applications, Michael J. Allen

Master's Theses

Various thermal energy storage (TES) systems including latent heat TES (LHTES), sensible heat TES and chemical TES are reviewed and analyzed with an emphasis on LHTES. LHTES is considered here due its high energy density which results in a significant reduction in the overall system size (volume and mass). However, LHTES systems have been limited in the past by the low thermal conductivity of most phase change materials (PCMs). A detailed experimental investigation is conducted to investigate the innovative combination of a heat pipe (HP) with either metal foam or foils. A cylindrical experimental apparatus is constructed to obtain the …

Inhibition Of Urinary Tract Infections And Biofilm Formation On Long-Term Indwelling Urethral Catheters Through Antibacterial Coatings, Jonathan L. Russo

Master's Theses

Indwelling urethral catheters are both important and convenient biomedical devices for many people. They provide incontinent and/or paraplegic patients an involuntary method of emptying their bladder. The catheters are inserted through the patient’s urethra to the posterior portion of the bladder. A balloon is inflated with water to keep it secure and in place. The tip of the catheter has an eye hole exposing the lumen of the catheter. The urine in the bladder drains through the lumen and out of the body into a collection bag. Catheters can potentially have 2 problems. First, they are prone to calcium/magnesium phosphate …

Relationship Repair After Infidelity: Looking At Other Perspectives, Cherra Mina Mathis

Honors Theses

Prior research examining relationship repair after infidelity scenarios tends to focus primarily on heterosexual relationships, and often does not take into consideration the nuance between emotional and sexual infidelity, which, according to evolutionary psychology theories, tends to be salient to individuals based on their reproductive challenges. This research intended to rectify that dearth, hypothesizing that non-heterosexual participants would be more likely to repair a relationship where a partner has committed sexual infidelity than they would be to repair a relationship where a partner has committed an emotional infidelity. As well, based on prior research, there were expectations for sex differences …

The New Hampshire, Vol. 103 [104], No. 48 (May 2, 2014), The New Hampshire

The New Hampshire Print Edition

An independent student produced newspaper from the University of New Hampshire. This volume was printed as 103, but it is the 104th volume in the series. This was corrected in pencil.

Genetic Basis For The Virulence Of Enterohemorrhagic Escherichia Coli Strain Tw14359, Jason Kyle Morgan

USF Tampa Graduate Theses and Dissertations

Enterohemorrhagic Escherichia coli (EHEC) is a virulent pathotype of E. coli that is associated with major outbreaks of hemorrhagic colitis and the life-threatening kidney disease hemolytic uremic syndrome. For successful host colonization and attachment to the intestinal mucosa, EHEC requires the locus of enterocyte effacement (LEE) pathogenicity island, which encodes a type III secretion system (TTSS) responsible for secreting and translocating effector proteins into host colonocytes. Regulation of the LEE is primarily directed through the first operon, LEE1, encoding the locus encoded regulator (Ler), and occurs through the direct and indirect action of several regulators. The 2006 U.S. spinach outbreak …

Novel Roles Of The Protein Tyrosine Phosphatase Shp2 In Non-Small Cell Lung Cancer, Valentina Schneeberger

USF Tampa Graduate Theses and Dissertations

The gene PTPN11 was identified in the early 1990s, and encodes the non-transmembrane protein tyrosine phosphatase SHP2. SHP2 is expressed ubiquitously in cells, and plays an important role in cancer. Unlike most phosphatases, SHP2 positively regulates several signaling pathways including the Ras/MAPK and Src signaling pathways and acts as a proto-oncogene. SHP2 is also a cancer essential gene in certain types of carcinomas, and promotes growth, survival, and epithelial to mesenchymal transformation. Gain of function (GOF) SHP2 mutations are known leukemic oncogenes, and have been identified to a smaller extent in solid tumors as well. Currently, the roles of SHP2 …

Do Visitors Affect Zebra Behavior In Zoos?, Christine Conte

Honors Scholar Theses

I investigated the effects of visitors on the behavior of two zebra species (Equus grevyi and Equus burchelli) at eight zoos on the East Coast of the United States. I used instantaneous time sampling to record zebra behavior and visitor data. I used these data to run Bayesian hierarchical models and determined that visitors do not negatively affect zebra behavior. This is a positive finding for zoos, since it means that zebras, a highly skittish prey animal, are not disturbed in their exhibits. My data suggest there are behavioral differences between the zebra herds at different zoos, which …

Mutagenesis Of 8-Oxoguanine Adjacent To An Abasic Site In Escherichia Coli Cells Proficient Or Deficient In Dna Polymerase Iv, Savas T. Tsikis

Honors Scholar Theses

It is well established that clustered DNA damages or multiply damaged sites (MDS) are the result of ionizing radiation and that they are characterized by an enhanced mutagenic potential. As a model MDS, we have evaluated the mutagenic and cytotoxic properties of the ubiquitous oxidative DNA damage 8-oxoguanine (G^8-oxo) adjacent to the abasic site lesion (Z) using a single stranded M13mp7L2 vector. The recombinant DNA was used to transform wild type E. coli strains and strains deficient in the translesion DNA polymerase of the Y-family, DNA polymerase IV, in the presence or absence of SOS induction. The percent …

Mode, Method, And Medium: The Affordance Of Online Tutorials In The Writing Center, Erik V. Holtz

Honors Scholar Theses

While the body of literature regarding online tutorials in the writing center is growing, researchers seem hesitant to fully endorse, or even commend, online writing tutorials. This seems appropriate for work in communication theory and human-computer interaction; working across a medium may be different, but this could create new and interesting ways of tutoring. This research reports on a comparative analysis of online and in-person tutoring at three different universities, focusing on tutor self-perceptions and on affordances, a concept drawn from systems engineering, human-computer interaction and ecological psychology. Unstructured interviewing is used to create a set of preliminary affordances of …

Climate Change Vulnerabilities: Case Studies Of The Maldives And Kenya, Katherine A. Peinhardt

Honors Scholar Theses

This paper examines the political and social vulnerabilities of climate change, with the use of two salient case studies, the Republic of the Maldives and Kenya as exemplars of effects observed and projected. The susceptibilities for each nation are examined, with unique sensitivities highlighted and common themes synthesized between the two states. Examples of existing conflict, and implications of projected territorial conflict will be discussed. Policy outcomes will also be discussed for the situation of each nation, each with its own set of contextual sensitivities in the face of climatic shifts. Generalized policy options will be proposed for the common …

A Critical Evaluation Of Gender Studies In Archaeological Accounts Of Etruscans, Amelia Varteresian

Honors Scholar Theses

An evaluation of the past analysis of Etruscan archaeological discoveries, with a focus on the gender analysis of the artifacts. Several prominent analysis of artifacts and tombs are reevaluated in terms of potential context within the Etruscan society, as well as evaluated in terms of analysis bias primarily based in gender.

State V. Briston Appellant's Brief Dckt. 41588

Not Reported

No abstract provided.

Hiv Infection: Solitary Work, Silent Suffering Beliefs About Responsibility For Health And The Ability To Impact Disease Progression, Cynthia A. Frank

Doctoral Dissertations

HIV Infection: Solitary Work, Silent Suffering

Beliefs about Responsibility for Health

and the Ability to Impact Disease Progression

Cynthia Frank, PhD

University of Connecticut 2014

In contemporary Western society, health has become a personal and moral responsibility. People are blamed for their unhealthy or risky behavior and for acquiring certain diseases according to socially and culturally constructed norms. HIV is an infectious disease that is imbued with moral overtones and stigma, often multidimensional, creating an illness in which responsibility (for acquisition, transmission, and viral suppression) is an overarching theme. Thus, it represents a unique vehicle for exploring belief systems related …

Parental Perceptions And Experiences Of Physical And Emotional Violence Between Siblings: A Mixed-Methods, Comparative Case Study, Nathan Perkins

Theses and Dissertations

Sibling violence is a common occurrence for many children yet this form of family violence has received minimal attention in research compared to other forms of child maltreatment. With parents as an integral component in the lives of many children, parental perceptions and experiences of violence between siblings are important to understand. Furthermore, with the increased variation in family structures within society, inclusion of multiple types of families in research is necessary to encompass a broad understanding of sibling violence. This case study included seven parents from four different family structures to examine their perceptions and experiences of physical and …

Uptake Of Different Crystal Structures Of Tio₂ Nanoparticles By Caco-2 Intestinal Cells., C Gitrowski, Ar Al-Jubory, Rd Handy

School of Biological and Marine Sciences

The gastrointestinal uptake of different crystal structures of TiO2 was investigated using Caco-2 intestinal cells. Caco-2 monolayers exhibited time-dependent, saturable uptake of Ti from TiO2 exposures of 1 mgl(-1) over 24h, which was influenced by crystal type. Initial uptake rates were 5.3, 3.73, 3.58 and 4.48 nmol mg(-1)protein h(-1) for bulk, P25, anatase and rutile forms respectively. All exposures caused elevations of Ti in the cells relative to the control (ANOVA P<0.05). Electron micrographs of the Caco-2 monolayer showed the presence of particles inside the cells, and energy dispersive spectroscopy (EDS) confirmed the composition as TiO2. Incubating the cells with 120 IU nystatin (putative endocytosis inhibitor) or 100 μmol l(-1) vanadate (ATPase inhibitor) caused large increases in Ti accumulation for all crystal types relative to controls (ANOVA P<0.05), except for the rutile form with vanadate. Incubating the cells with 90 μmol l(-1) genistein (tyrosine kinase inhibitor) or 27 μmol l(-1) chloropromazine (clathrin-mediated endocytosis inhibitor) caused a large decrease in Ti accumulation relative to the controls (ANOVA P<0.05). Cell viability measures were generally good (low LDH leak, normal cell morphology), but there were some changes in the electrolyte composition (K(+), Na(+), Ca(2+), Mg(2+)) of exposed cells relative to controls. A rise in total Ca(2+) concentration in the cells was observed for all TiO2 crystal type exposures. Overall, the data shows that Ti accumulation for TiO2 NP exposure in Caco-2 cells is crystal structure-dependent, and that the mechanism(s) involves endocytosis of intact particles.

May 2, 2014, The Daily Mississippian

Daily Mississippian (all digitized issues)

No abstract provided.

Folding Wings Like A Cockroach: A Review Of Transverse Wing Folding Ensign Wasps (Hymenoptera: Evaniidae: Afrevania And Trissevania), István Mikó, Robert S. Copeland, James P. Balhoff, Matthew J. Yoder, Andrew R. Deans

All Peer-Reviewed Publications

We revise two relatively rare ensign wasp genera, whose species are restricted to Sub-Saharan Africa: Afrevania and Trissevania. Afrevania longipetiolata sp. nov., Trissevania heatherae sp. nov., T. hugoi sp. nov., T. mrimaensis sp. nov. and T. slideri sp. nov. are described, males and females of T. anemotis and Afrevania leroyi are redescribed, and an identification key for Trissevaniini is provided. We argue that Trissevania mrimaensis sp. nov. and T. heatherae sp. nov. populations are vulnerable, given their limited distributions and threats from mining activities in Kenya. We hypothesize that these taxa together comprise a monophyletic lineage, Trissevaniini, tr. nov., the …

Chimes: May 2, 2014, Calvin College

Chimes

Calvin hosts Special Olympics event on Saturday by Emily Cole

Forum continues We Are Calvin [too] campaign by Kate Parsons

Annual 5k Spring Classic attracts 1,200 runners by Joe Mohan

Calvin spring sports entering postseason by Brian Exner

Calvin responds to Heartbleed bug by John Muyskens

Chaplain to spend administrative sabbatical in Lithuania by Bekah Coggin

Six seniors to start intentional community in Sacramento by Nathan Groenewold

Diversity In Times Of Austerity: Documenting Resistance In The Academy, Tamara Leech, David Moscowitz, Terri Jett, Terri Carney, Ann Savage

Department of Public Health Scholarship and Creative Works

What happens to feminism in the university is parallel to what happens to feminism in other venues under economic restructuring: while the impoverished nation is forced to cut social services and thereby send women back to the hierarchy of the family, the academy likewise reduces its footprint in interdisciplinary structures and contains academic feminists back to the hierarchy of departments and disciplines. When the family and the department become powerful arbiters of cultural values, women and feminist academics by and large suffer: they either accept a diminished role or are pushed to compete in a system they recognize as antithetical …

2-Acylamido Analogues Of N-Acetylglucosamine Prime Formation Of Chitin Oligosaccharides By Yeast Chitin Synthase 2, Jacob Gyore, Archana Parameswar, Carleigh Hebbard, Younghoon Oh, Erfei Bi, Alexei Demchenko, Neil Price, Peter Orlean

Chemistry & Biochemistry Faculty Works

Chitin, a homopolymer of β1,4-linked N-acetylglucosamine (GlcNAc) residues, is a key component of the cell walls of fungi and the exoskeletons of arthropods. Chitin synthases transfer GlcNAc from UDP-GlcNAc to preexisting chitin chains in reactions that are typically stimulated by free GlcNAc. The effect of GlcNAc was probed by using a yeast strain expressing a single chitin synthase, Chs2, by examining formation of chitin oligosaccharides (COs) and insoluble chitin, and by replacing GlcNAc with 2-acylamido analogues of GlcNAc. Synthesis of COs was strongly dependent on inclusion of GlcNAc in chitin synthase incubations, and N,N′-diacetylchitobiose (GlcNAc2) was the major reaction product. …

Identification Of Mastigocladus Laminosus Genes Associated With Enhanced Nitrogen Fixation Performance, Patrick R. Hutchins

Graduate Student Theses, Dissertations, & Professional Papers

Understanding population variation for fitness-related traits is important for our comprehension of evolutionary adaptation and of how populations respond to environmental change. Here, I investigate variation in nitrogen fixation performance for an ecologically-variable population of the cyanobacterium Mastigocladus laminosus from White Creek, a nitrogen-limited, geothermally-influenced stream in Yellowstone NP. I next take a population genomics approach to identify candidate loci associated with superior performance. Variation among strains and temperature dependence of the nitrogen fixation process were the most important factors in a linear mixed effects model. Absolute and relative measures of genetic differentiation between strains from the upper quartile of …

Computational Inference Of Biological Networks Using Circadian Signals, Devon Cormack

CLAS: Colby Liberal Arts Symposium

The work that I will be presenting demonstrates that through observation of the circadian dynamics of the suprachiasmatic nucleus (SCN), you can infer the network connectivity between cells in the SCN for simple network structures. Circadian pacemakers and damped oscillators will be discussed with reference to their importance in the resynchronization of the circadian system and how the resynchronization process can be used to infer network connectivity. Connectivity inference will be discussed for both biological and simulated systems. Inference methods were developed, tested and evaluated through model simulation in MATLAB.

The Effect Of Choline Supplementation And The Brain-Derived Neurotrophic Factor (Bdnf) On Medial Temporal Lobe Volume Changes As A Measurement Of Depression, Leigh Mathieu

CLAS: Colby Liberal Arts Symposium

Depression is a prevalent mood disorder categorized by a lowered mood state, social withdrawal, somatic symptoms, cognitive defects, and feelings of worthlessness or guilt. Prenatal supplementation of the essential nutrient choline increases adult hippocampal neurogenesis and can reduce the risk and improve prognosis of depression and other mood disorders. Characteristic in these disorders is dysfunction in neural plasticity as mediated through the growth factor, brain-derived neurotrophic factor (BDNF). Genetic variants and mutations in the genes that code for this and related proteins in humans and rats affect the brain in many ways, including how dopaminergic synapses in the reward pathway …

Biotransformation Of Halogenated Flame Retardants, Stefanie Lai

CLAS: Colby Liberal Arts Symposium

At the end of a computers life cycle, its final destination is often unknown to the average consumer. Consumers unwittingly contribute to electronic waste (e-waste) pollution, even if they attempt to recycle old monitors, televisions, gaming consoles etc, in an environmentally friendly way. In recent years e-waste has become an emerging global issue as electronics usage increases and questionable methods of disposal are exposed. Approximately, 70% of the worlds e-waste is shipped back to China, where it is often disposed of using hazardous methods. These include open-flame burning and acid digestion directly into the soil causing a widespread presence of …