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Cognition: The New Frontier For Nuts And Berries, Peter Pribis, Barbara Shukitt-Hale Jul 2014

Cognition: The New Frontier For Nuts And Berries, Peter Pribis, Barbara Shukitt-Hale

Faculty Publications

The inclusion of nuts in the diet is associated with a decreased risk of coronary artery disease, hypertension, gallstones, diabetes, cancer, metabolic syndrome, and visceral obesity. Frequent consumption of berries seems to be associated with improved cardiovascular and cancer outcomes, improved immune function, and decreased recurrence of urinary tract infections; the consumption of nuts and berries is associated with reduction in oxidative damage, inflammation, vascular reactivity, and platelet aggregation, and improvement in immune functions. However, only recently have the effects of nut and berry consumption on the brain, different neural systems, and cognition been studied. There is growing evidence that …

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A Position Analysis Of Coupled Spherical Mechanisms In Action Origami, Landen A. Bowen, L. A. Baxter, Spencer P. Magleby, Larry L. Howell Jul 2014

A Position Analysis Of Coupled Spherical Mechanisms In Action Origami, Landen A. Bowen, L. A. Baxter, Spencer P. Magleby, Larry L. Howell

Faculty Publications

Origami has been previously utilized in design to create deployable systems. Action origami, origami designed to move, has the ability to deploy to a larger state and have motion in the deployed state. The majority of action origami achieves motion through coupled systems of spherical mechanisms. An origami vertex, the point at which folds converge, is shown to be equivalent to a spherical change-point mechanism. A position analysis of an origami vertex is presented, resulting in a relationship between input and output angles as well as the path of the coupler link. A method for analyzing coupled systems of repeated …

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Prohibitions Of Homosexual Practice In Leviticus 18 And 20: Moral Or Ceremonial?, Roy E. Gane Jul 2014

Prohibitions Of Homosexual Practice In Leviticus 18 And 20: Moral Or Ceremonial?, Roy E. Gane

Faculty Publications

No abstract provided.

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Amino Acids In The Uterine Luminal Fluid Reflects The Temporal Changes In Transporter Expression In The Endometrium And Conceptus During Early Pregnancy In Cattle, Niamh Forde, Constantine A. Simintiras, Roger Sturmey, Solomon Mamo, Alan K. Kelly, Thomas E. Spencer, Fuller W. Bazer, Pat Lonergan Jun 2014

Amino Acids In The Uterine Luminal Fluid Reflects The Temporal Changes In Transporter Expression In The Endometrium And Conceptus During Early Pregnancy In Cattle, Niamh Forde, Constantine A. Simintiras, Roger Sturmey, Solomon Mamo, Alan K. Kelly, Thomas E. Spencer, Fuller W. Bazer, Pat Lonergan

Faculty Publications

In cattle, conceptus-maternal interactions are critical for the establishment and maintenance of pregnancy. A major component of this early interaction involves the transport of nutrients and secretion of key molecules by uterine epithelial cells to help support conceptus development during the peri-implantation period of pregnancy. Objectives were to: 1) analyze temporal changes in the amino acid (AA) content of uterine luminal fluid (ULF) during the bovine estrous cycle; 2) understand conceptus-induced alterations in AA content; 3) determine expression of AA transporters in the endometrium and conceptus; and 4) determine how these transporters are modulated by (Progesterone) P4. Concentrations of aspartic …

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Elaborate Visual And Acoustic Signals Evolve Independently In A Large, Phenotypically Diverse Radiation Of Songbirds, Nicholas A. Mason, Allison J. Shultz, Kevin J. Burns Jun 2014

Elaborate Visual And Acoustic Signals Evolve Independently In A Large, Phenotypically Diverse Radiation Of Songbirds, Nicholas A. Mason, Allison J. Shultz, Kevin J. Burns

Faculty Publications

The concept of a macroevolutionary trade-off among sexual signals has a storied history in evolutionary biology. Theory predicts that if multiple sexual signals are costly for males to produce or maintain and females prefer a single, sexually selected trait, then an inverse correlation between sexual signal elaborations is expected among species. However, empirical evidence for what has been termed the 'transfer hypothesis' is mixed, which may reflect different selective pressures among lineages, evolutionary covariates or methodological differences among studies. Here,we examine interspecific correlations between song and plumage elaboration in a phenotypically diverse, widespread radiation of songbirds, the tanagers. The tanagers …

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Convergent Evolution Of Aquatic Foraging In A New Genus And Species (Rodentia: Muridae) From Sulawesi Island, Indonesia, Kevin C. Rowe, Anang S. Achmadi, Jacob A. Esselstyn Jun 2014

Convergent Evolution Of Aquatic Foraging In A New Genus And Species (Rodentia: Muridae) From Sulawesi Island, Indonesia, Kevin C. Rowe, Anang S. Achmadi, Jacob A. Esselstyn

Faculty Publications

The island of Sulawesi, in Indonesia, lies at the crossroads of the Indo-Australian Archipelago and has remained isolated from the Asian (Sunda) and Australian (Sahul) continental shelves for at least the last 10 million years. Of the 50 native species of rodents on Sulawesi, all are endemic and represent the evolution of a variety of ecological and morphological forms within the Muridae and Sciuridae. Carnivorous rodents have evolved, perhaps independently, in Muridae from the Philippines, Sulawesi, and Sahul, but semi-aquatic murids are only known from Sahul. Here we describe a new genus and species of insectivorous water rat from Sulawesi. …

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Uncertainty Quantification Driven Predictive Multi-Scale Model For Synthesis Of Mycotoxins, Sourav Banerjee, Gabriel A. Terejanu, Anindya Chanda Jun 2014

Uncertainty Quantification Driven Predictive Multi-Scale Model For Synthesis Of Mycotoxins, Sourav Banerjee, Gabriel A. Terejanu, Anindya Chanda

Faculty Publications

Many toxic molds synthesize and release an array of poisons, termed mycotoxins that have an enormous impact on human health, agriculture and economy [1]. These molds contaminate our buildings, indoor air and crops, cause life threatening human and animal diseases and reduce agricultural output [2]. In order to design appropriate approaches to minimize the detrimental effects of these fungi, it is essential to develop diagnostic methodologies that can rapidly and accurately determine based on fungal strains and their growth patterns, the extent of mycotoxin mediated damage caused to the environment.Here we developed a novel multi-scale predictive mathematical model that could …

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Integrating Sequence And Array Data To Create An Improved 1000 Genomes Project Haplotype Reference Panel, Olivier Delaneau, Jonathan Marchini, Gil A. Mcveanh, Peter Donnelly, Gerton Lunter, Jonathan L. Marchini, Simon Myers, Anjali Gupta-Hinch, Zamin Iqbal, Iain Mathieson, Andy Rimmer, Dionysia K. Xifara, Angeliki Kerasidou, Claire Churchhouse, David M. Altshuler, Stacey B. Gabriel, Eric S. Lander, Namrata Gupta, Mark J. Daly, Mark A. Depristo, Eric Banks, Gaurav Bhatia, Mauricio O. Carneiro, Guillermo Del Angel, Giulio Genovese, Robert E. Handsaker, Chris Hartl, Steven A. Mccarroll, James C. Nemesh, Ryan E. Poplin, Stephen F. Schaffner, Khalid Shakir, Pardis C. Sabeti, Sharon R. Grossman Jun 2014

Integrating Sequence And Array Data To Create An Improved 1000 Genomes Project Haplotype Reference Panel, Olivier Delaneau, Jonathan Marchini, Gil A. Mcveanh, Peter Donnelly, Gerton Lunter, Jonathan L. Marchini, Simon Myers, Anjali Gupta-Hinch, Zamin Iqbal, Iain Mathieson, Andy Rimmer, Dionysia K. Xifara, Angeliki Kerasidou, Claire Churchhouse, David M. Altshuler, Stacey B. Gabriel, Eric S. Lander, Namrata Gupta, Mark J. Daly, Mark A. Depristo, Eric Banks, Gaurav Bhatia, Mauricio O. Carneiro, Guillermo Del Angel, Giulio Genovese, Robert E. Handsaker, Chris Hartl, Steven A. Mccarroll, James C. Nemesh, Ryan E. Poplin, Stephen F. Schaffner, Khalid Shakir, Pardis C. Sabeti, Sharon R. Grossman

Faculty Publications

A major use of the 1000 Genomes Project (1000GP) data is genotype imputation in genome-wide association studies (GWAS). Here we develop a method to estimate haplotypes from low-coverage sequencing data that can take advantage of single-nucleotide polymorphism (SNP) microarray genotypes on the same samples. First the SNP array data are phased to build a backbone (or 'scaffold') of haplotypes across each chromosome. We then phase the sequence data 'onto' this haplotype scaffold. This approach can take advantage of relatedness between sequenced and non-sequenced samples to improve accuracy. We use this method to create a new 1000GP haplotype reference set for …

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A Cluster-Randomized Trial Of Task Shifting And Blood Pressure Control In Ghana: Study Protocol, Gbenga Ogedegbe, Jacob Plange-Rhule, Joyce Gyamfi, William Chaplin, Michael Ntim, Kingsley Apusiga, Kiran Khurshid, Richard Cooper Jun 2014

A Cluster-Randomized Trial Of Task Shifting And Blood Pressure Control In Ghana: Study Protocol, Gbenga Ogedegbe, Jacob Plange-Rhule, Joyce Gyamfi, William Chaplin, Michael Ntim, Kingsley Apusiga, Kiran Khurshid, Richard Cooper

Faculty Publications

Background: Countries in sub-Saharan Africa (SSA) are experiencing an epidemic of cardiovascular disease (CVD) propelled by rapidly increasing rates of hypertension. Barriers to hypertension control in SSA include poor access to care and high out-of-pocket costs. Although SSA bears 24% of the global disease burden, it has only 3% of the global health workforce. Given such limited resources, cost-effective strategies, such as task shifting, are needed to mitigate the rising CVD epidemic in SSA. Ghana, a country in SSA with an established community health worker program integrated within a national health insurance scheme provides an ideal platform to evaluate implementation …

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Artemisia Scoparia Enhances Adipocyte Development And Endocrine Function In Vitro And Enhances Insulin Action In Vivo, Allison J. Richard, Scott Fuller, Veaceslav Fedorcenco, Robbie Beyl, Thomas P. Burris, Randall Mynatt, David M. Ribnicky, Jacqueline M. Stephens Jun 2014

Artemisia Scoparia Enhances Adipocyte Development And Endocrine Function In Vitro And Enhances Insulin Action In Vivo, Allison J. Richard, Scott Fuller, Veaceslav Fedorcenco, Robbie Beyl, Thomas P. Burris, Randall Mynatt, David M. Ribnicky, Jacqueline M. Stephens

Faculty Publications

Background: Failure of adipocytes to expand during periods of energy excess can result in undesirable metabolic consequences such as ectopic fat accumulation and insulin resistance. Blinded screening studies have indicated that Artemisia scoparia (SCO) extracts can enhance adipocyte differentiation and lipid accumulation in cultured adipocytes. The present study tested the hypothesis that SCO treatment modulates fat cell development and function in vitro and insulin sensitivity in adipose tissue in vivo. Methods: In vitro experiments utilized a Gal4-PPARγ ligand binding domain (LBD) fusion protein-luciferase reporter assay to examine PPARγ activation. To investigate the ability of SCO to modulate adipogenesis and mature …

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Large Scale Screening Of Digeneans For Neorickettsia Endosymbionts Using Real-Time Pcr Reveals New Neorickettsia Genotypes, Host Associations And Geographic Records, Stephen Greiman, Vasyl V. Tkach, Eric Pulis, Thomas J. Fayton, Stephen S. Curran Jun 2014

Large Scale Screening Of Digeneans For Neorickettsia Endosymbionts Using Real-Time Pcr Reveals New Neorickettsia Genotypes, Host Associations And Geographic Records, Stephen Greiman, Vasyl V. Tkach, Eric Pulis, Thomas J. Fayton, Stephen S. Curran

Faculty Publications

Digeneans are endoparasitic flatworms with complex life cycles including one or two intermediate hosts (first of which is always a mollusk) and a vertebrate definitive host. Digeneans may harbor intracellular endosymbiotic bacteria belonging to the genus Neorickettsia (order Rickettsiales, family Anaplasmataceae). Some Neorickettsia are able to invade cells of the digenean's vertebrate host and are known to cause diseases of wildlife and humans. In this study we report the results of screening 771 digenean samples for Neorickettsia collected from various vertebrates in terrestrial, freshwater, brackish, and marine habitats in the United States, China and Australia. Neorickettsia were detected using a …

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A Cross-Species Study Of Gesture And Its Role In Symbolic Development: Implications For The Gestural Theory Of Language Evolution, K. Gillespie-Lynch, P. M. Greenfield, Y. Feng, S. Savage-Rumbaugh, H. Lyn Jun 2014

A Cross-Species Study Of Gesture And Its Role In Symbolic Development: Implications For The Gestural Theory Of Language Evolution, K. Gillespie-Lynch, P. M. Greenfield, Y. Feng, S. Savage-Rumbaugh, H. Lyn

Faculty Publications

Using a naturalistic video database, we examined whether gestures scaffold the symbolic development of a language-enculturated chimpanzee, a language-enculturated bonobo, and a human child during the second year of life. These three species constitute a complete clade: species possessing a common immediate ancestor. A basic finding was the functional and formal similarity of many gestures between chimpanzee, bonobo, and human child. The child's symbols were spoken words; the apes' symbols were lexigrams - non-iconic visual signifiers. A developmental pattern in which gestural representation of a referent preceded symbolic representation of the same referent appeared in all three species (but was …

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Environmentally Persistent Free Radicals Inhibit Cytochrome P450 Activity In Rat Liver Microsomes, James R. Reed, George F. Cawley, Taylor G. Ardoin, Barry Dellinger, Slawomir M. Lomnicki, Farhana Hasan, Lucy W. Kiruri, Wayne L. Backes Jun 2014

Environmentally Persistent Free Radicals Inhibit Cytochrome P450 Activity In Rat Liver Microsomes, James R. Reed, George F. Cawley, Taylor G. Ardoin, Barry Dellinger, Slawomir M. Lomnicki, Farhana Hasan, Lucy W. Kiruri, Wayne L. Backes

Faculty Publications

Combustion processes generate particulate matter that affects human health. When incineration fuels include components that are highly enriched in aromatic hydrocarbons (especially halogenated varieties) and redox-active metals, ultrafine particulate matter containing air-stable, environmentally persistent free radicals (EPFRs) is generated. The exposure to fine EPFRs (less than 2.5. μm in diameter) has been shown to negatively influence pulmonary and cardiovascular functions in living organisms. The goal of this study was to determine if these EPFRs have a direct effect on cytochrome P450 function. This was accomplished by direct addition of the EPFRs to rat liver microsomal preparations and measurement of several …

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The Development Of Sleep-Wake Rhythms And The Search For Elemental Circuits In The Infant Brain, Mark S. Blumberg, Andrew J. Gall, William D. Todd Jun 2014

The Development Of Sleep-Wake Rhythms And The Search For Elemental Circuits In The Infant Brain, Mark S. Blumberg, Andrew J. Gall, William D. Todd

Faculty Publications

Despite the predominance of sleep in early infancy, developmental science has yet to play a major role in shaping concepts and theories about sleep and its associated ultradian and circadian rhythms. Here we argue that developmental analyses help us to elucidate the relative contributions of the brainstem and forebrain to sleep-wake control and to dissect the neural components of sleep-wake rhythms. Developmental analysis also makes it clear that sleep-wake processes in infants are the foundation for those of adults. For example, the infant brainstem alone contains a fundamental sleep-wake circuit that is sufficient to produce transitions among wakefulness, quiet sleep, …

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American Shudders: Race, Representation, And Sodomy In Redburn, David Greven Jun 2014

American Shudders: Race, Representation, And Sodomy In Redburn, David Greven

Faculty Publications

Newer critical treatments of Redburn argue that its significance lies in its critique of antebellum slavery, most saliently in chapter 31, in which Wellingborough Redburn, the first-person narrator, offers an ekphrastic depiction of the Nelson Monument in Liverpool, England. This monument contains an especially significant detail: the four naked, chained male figures at the base of the pedestal. Redburn tells us that he can never look at their “swarthy limbs and manacles, without being involuntarily reminded of four African slaves in the market-place.” The abjection of the figures is significant for understanding not only issues of race and slavery but …

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Contribution Of Surface Leaf-Litter Breakdown And Forest Composition To Benthic Oxygen Demand And Ecosystem Respiration In A South Georgia Blackwater River, Andrew S. Mehring, Kevin A. Kuehn, Cynthia J. Tant, Catherine M. Pringle, R. Richard Lowrance, George Vellidis Jun 2014

Contribution Of Surface Leaf-Litter Breakdown And Forest Composition To Benthic Oxygen Demand And Ecosystem Respiration In A South Georgia Blackwater River, Andrew S. Mehring, Kevin A. Kuehn, Cynthia J. Tant, Catherine M. Pringle, R. Richard Lowrance, George Vellidis

Faculty Publications

Many North American blackwater rivers exhibit low dissolved O2 (DO) that may be the result of benthic respiration. We examined how tree species affected O2 demand via the quantity and quality of litter produced. In addition, we compared areal estimates of surface leaf-litter microbial respiration to sediment O2 demand (SOD) and ecosystem respiration (ER) in stream and swamp reaches of a blackwater river to quantify contributions of surface litter decomposition to O2 demand. Litter inputs averaged 917 and 678 g m−2 y−1 in the swamp and stream, respectively. Tree species differentially affected O2 …

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"Make Them Pay": Charting The Social Topography Of An Old Assyrian Caravan Cycle, Edward P. Stratford Jun 2014

"Make Them Pay": Charting The Social Topography Of An Old Assyrian Caravan Cycle, Edward P. Stratford

Faculty Publications

With one foot on the Tigris and the other on the Anatolian plateau, Assyrian merchants conducted a brisk trade in tin, textiles, and silver in the late twentieth and early nineteenth centuries BCE. The structural aspects of the shipment and sale of tin and textiles in exchange for silver in caravan cycles have been the subjects of many excellent studies with methodologies including lexical studies and text-type studies. In addition, archival studies have been helpful in giving a sense of the variety of organization and involvement in the trade among different individuals. However, approaches that focus on structural activities like …

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Environmental Law Outside The Canon, Todd S. Aagaard Jun 2014

Environmental Law Outside The Canon, Todd S. Aagaard

Faculty Publications

It is time to rethink the domination of environmental law by a canon of major federal statutes enacted in the 1970s. Environmental law is in a malaise. Despite widespread agreement that existing laws are inadequate to address current environmental problems, Congress has not passed a major environmental statute in more than twenty years. If it is to succeed, the environmental law of this new century may need to evolve into something that looks quite different than the extant environmental law canon. The next generation of environmental laws must be viable for creation and implementation even in an antagonistic political climate; …

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Binding Of Solvated Peptide (Eplqlkm) With A Graphene Sheet Via Simulated Coarse-Grained Approach, Somayyeh Sheikholeslami, R. B. Pandey, Nadiya Dragneva, Wely Floriano, Oleg Rubel, Stephen A. Barr, Zhifeng Kuang, Rajiv Berry, Rajesh Naik, Barry Farmer May 2014

Binding Of Solvated Peptide (Eplqlkm) With A Graphene Sheet Via Simulated Coarse-Grained Approach, Somayyeh Sheikholeslami, R. B. Pandey, Nadiya Dragneva, Wely Floriano, Oleg Rubel, Stephen A. Barr, Zhifeng Kuang, Rajiv Berry, Rajesh Naik, Barry Farmer

Faculty Publications

Binding of a solvated peptide A1 (1E 2P 3L 4Q 5L 6K 7M) with a graphene sheet is studied by a coarse-grained computer simulation involving input from three independent simulated interaction potentials in hierarchy. A number of local and global physical quantities such as energy, mobility, and binding profiles and radius of gyration of peptides are examined as a function of temperature (T). Quantitative differences (e.g., the extent of binding within a temperature range) and qualitative similarities are observed in results from three simulated potentials. Differences in variations of both local and …

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Romanian Children’S Representations Of Negative And Self-Conscious Emotions In A Narrative Story Stem Technique, Loredana Apavaloaie, Timothy Page, Loren D. Marks May 2014

Romanian Children’S Representations Of Negative And Self-Conscious Emotions In A Narrative Story Stem Technique, Loredana Apavaloaie, Timothy Page, Loren D. Marks

Faculty Publications

This research uses children’s story-stem play narratives to investigate dimensions of negative emotional expression. Fifty-one Romanian children between 6 and 11-years old participated in the study. Children’s narratives were coded for three basic negative emotions and five self-conscious emotions. Parents completed a general questionnaire for demographic data and the amount of time they spent with their children. Differences were found for frequencies of negative emotional representations in relation to the specific story-stems in which they occurred. Girls were more likely than boys to enact in their narratives guilt feelings coupled with apology following some wrongdoing. Children who spent more time …

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Questioning The Comma In Verse 13 Of The Word Of Wisdom, A. Jane Birch May 2014

Questioning The Comma In Verse 13 Of The Word Of Wisdom, A. Jane Birch

Faculty Publications

The 1921 edition of the Doctrine and Covenants included an additional comma, which was inserted after the word “used” in D&C 89:13: “And it is pleasing unto me that they should not be used, only in times of winter, or of cold, or famine.” Later authors have speculated that the addition of the comma was a mistake that fundamentally changed the meaning of the verse. This article examines this “errant comma theory” and demonstrates why this particular interpretation of D&C 89:13 is without merit.

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Male-Male Clasping May Be Part Of An Alternative Reproductive Tactic In Xenopus Laevis, Heather J. Rhodes, Rachel J. Stevenson, Courtney L. Ego May 2014

Male-Male Clasping May Be Part Of An Alternative Reproductive Tactic In Xenopus Laevis, Heather J. Rhodes, Rachel J. Stevenson, Courtney L. Ego

Faculty Publications

No abstract provided.

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Hobby Lobby, Corporate Law, And The Theory Of The Firm: Why For-Profit Corporations Are Rfra Persons, Alan J. Meese, Nathan B. Oman May 2014

Hobby Lobby, Corporate Law, And The Theory Of The Firm: Why For-Profit Corporations Are Rfra Persons, Alan J. Meese, Nathan B. Oman

Faculty Publications

No abstract provided.

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Social Opportunity Rapidly Regulates Expression Of Crf And Crf Receptors In The Brain During Social Ascent Of A Teleost Fish, Astatotilapia Burtoni, Russ E. Carpenter, Karen P. Maruska, Lisa Becker, Russell D. Fernald May 2014

Social Opportunity Rapidly Regulates Expression Of Crf And Crf Receptors In The Brain During Social Ascent Of A Teleost Fish, Astatotilapia Burtoni, Russ E. Carpenter, Karen P. Maruska, Lisa Becker, Russell D. Fernald

Faculty Publications

In social animals, hierarchical rank governs food availability, territorial rights and breeding access. Rank order can change rapidly and typically depends on dynamic aggressive interactions. Since the neuromodulator corticotrophin releasing factor (CRF) integrates internal and external cues to regulate the hypothalamic-pituitary adrenal (HPA) axis, we analyzed the CRF system during social encounters related to status. We used a particularly suitable animal model, African cichlid fish, Astatotilapia burtoni, whose social status regulates reproduction. When presented with an opportunity to rise in rank, subordinate A. burtoni males rapidly change coloration, behavior, and their physiology to support a new role as dominant, reproductively …

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It’S A Bird! It’S A Plane! It’S A Gender Stereotype!: Longitudinal Associations Between Superhero Viewing And Gender Stereotyped Play, Sarah M. Coyne, Jennifer Ruh Linder, Eric E. Rasmussen, David A. Nelson, Kevin M. Collier May 2014

It’S A Bird! It’S A Plane! It’S A Gender Stereotype!: Longitudinal Associations Between Superhero Viewing And Gender Stereotyped Play, Sarah M. Coyne, Jennifer Ruh Linder, Eric E. Rasmussen, David A. Nelson, Kevin M. Collier

Faculty Publications

Although content analyses have found that superhero programs in the media portray strong gender stereotypes of masculinity, little research has examined the effects of viewing such programs. In the current study, 134 mothers of preschool children (from the Western and Northwestern United States) reported their child’s superhero exposure in the media, male-stereotyped play, weapon play, and parental active mediation of the media at two time points (1 year apart). Results revealed that boys viewed superhero programs more frequently than girls, with nearly a quarter of boys viewing superhero programs at least weekly. Analyses revealed that superhero exposure was related to …

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Characterization Of 3d Interconnected Microstructural Network In Mixed Ionic And Electronic Conducting Ceramic Composites, William M. Harris, Kyle S. Brinkman, Ye Lin, Dong Su, Alex P. Cocco, Arata Nakajo, Matthew B. Degostin, Yu-Chen Karen Chen-Wiegart, Jun Wang, Fanglin Chen, Yong S. Chu, Wilson K. S. Chiu May 2014

Characterization Of 3d Interconnected Microstructural Network In Mixed Ionic And Electronic Conducting Ceramic Composites, William M. Harris, Kyle S. Brinkman, Ye Lin, Dong Su, Alex P. Cocco, Arata Nakajo, Matthew B. Degostin, Yu-Chen Karen Chen-Wiegart, Jun Wang, Fanglin Chen, Yong S. Chu, Wilson K. S. Chiu

Faculty Publications

The microstructure and connectivity of the ionic and electronic conductive phases in composite ceramic membranes are directly related to device performance. Transmission electron microscopy (TEM) including chemical mapping combined with X-ray nanotomography (XNT) have been used to characterize the composition and 3-D microstructure of a MIEC composite model system consisting of a Ce0.8Gd0.2O2 (GDC) oxygen ion conductive phase and a CoFe2O4 (CFO) electronic conductive phase. The microstructural data is discussed, including the composition and distribution of an emergent phase which takes the form of isolated and distinct regions. Performance implications are considered …

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Mortality Risk And Survival In The Aftermath Of The Medieval Black Death, Sharon Dewitte May 2014

Mortality Risk And Survival In The Aftermath Of The Medieval Black Death, Sharon Dewitte

Faculty Publications

The medieval Black Death (c. 1347-1351) was one of the most devastating epidemics in human history. It killed tens of millions of Europeans, and recent analyses have shown that the disease targeted elderly adults and individuals who had been previously exposed to physiological stressors. Following the epidemic, there were improvements in standards of living, particularly in dietary quality for all socioeconomic strata. This study investigates whether the combination of the selective mortality of the Black Death and post-epidemic improvements in standards of living had detectable effects on survival and mortality in London. Samples are drawn from several pre- and post-Black …

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El Niño-Southern Oscillation Is Linked To Decreased Energetic Condition In Long-Distance Migrants, Kristina Paxton, Emily B. Cohen, Zoltán Németh, Frank R. Moore May 2014

El Niño-Southern Oscillation Is Linked To Decreased Energetic Condition In Long-Distance Migrants, Kristina Paxton, Emily B. Cohen, Zoltán Németh, Frank R. Moore

Faculty Publications

Predicting how migratory animals respond to changing climatic conditions requires knowledge of how climatic events affect each phase of the annual cycle and how those effects carry-over to subsequent phases. We utilized a 17-year migration dataset to examine how El Niño-Southern Oscillation climatic events in geographically different regions of the Western hemisphere carry-over to impact the stopover biology of several intercontinental migratory bird species. We found that migratory birds that over-wintered in South America experienced significantly drier environments during El Niño years, as reflected by reduced Normalized Difference Vegetation Index (NDVI) values, and arrived at stopover sites in reduced energetic …

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Quantifying Natural Resources Using Field-Based Instruction And Hands-On Applications, Daniel Unger, David Kulhavy, I-Kuai Hung, Yanli Zhang May 2014

Quantifying Natural Resources Using Field-Based Instruction And Hands-On Applications, Daniel Unger, David Kulhavy, I-Kuai Hung, Yanli Zhang

Faculty Publications

Undergraduate students pursuing a Bachelor of Science in Forestry (BSF) degree at Stephen F. Austin State University (SFA) attend an intensive 6-week residential hands-on instruction in applied field methods. For students pursuing the BSF degree knowing the exact location, length, or area of a forestland is crucial to the understanding and proper management of any related natural resource. The intensive 6-week instruction includes teaching how to use the Global Positioning System (GPS) to accurately record the true spatial location of an earth’s surface feature. After receiving hands-on instructions during the summer of 2013, students were taken to the field to …

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System Safety Principles: A Multidisciplinary Engineering Perspective, Joseph Saleh, Karen Marais, Francesca Favaro May 2014

System Safety Principles: A Multidisciplinary Engineering Perspective, Joseph Saleh, Karen Marais, Francesca Favaro

Faculty Publications

System safety is of particular importance for many industries. Broadly speaking, it refers to the state or objective of striving to sustainably ensure accident prevention through actions on multiple safety levers (technical, organizational, and regulatory). While complementary to risk analysis, it is distinct in one important way: risk analysis is anticipatory rationality examining the possibility of adverse events (or accident scenarios), and the tools of risk analysis support and in some cases quantify various aspects of this analysis effort. The end-objective of risk analysis is to help identify and prioritize risks, inform risk management, and support risk communication. These tools …

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