Digital Commons Network^™

Smoking Cessation Agents And Suicide, Jill E. Lavigne

Pharmacy Faculty/Staff Publications

The risk is uncertain, so patients should make an informed decision.

Effects Of Trichoderma Harzianum Perimeter Applications On Preventing Mycena Citricolor In Coffea Arabica Plots, November 2009, Nicholas J. Gallagher

Monteverde Institute: Tropical Ecology and Conservation

This study examined the fungus Trichoderma harzianum, a proven effective biological control agent, for its potential of preventing the forest and windbreak instigated onset of the fungus Mycena citricolor in coffee plots. Fifteen plots on one farm in the Monteverde region of Puntarenas, Costa Rica were surveyed for the presence of M. citricolor on coffee near forest edges and along transects away from the forest. T. harzianum was applied to the forest edge on half of the plots, and the coffee plants near the edge were resurveyed for new infestations of M. citricolor. No significant difference between the treated and …

Effects Of Inbreeding On Morphology And Reproduction In Morpho Peleides (Nymphalidae), November 2009, Brittany Pahnke

Monteverde Institute: Tropical Ecology and Conservation

Populations limited in dispersal ability have higher rates of inbreeding and lower gene flow than large, well-connected populations. Inbreeding depression causes some morphological characteristics to change predictably in butterfly populations, and these may therefore be indicators of overall fitness. I examined differences in body size and symmetry between wild-caught Morpho peleides individuals and individuals from an inbred population to observe the effects of inbreeding on morphological characteristics. Inbred butterflies had lower average forewing length than wild ones, and thus lower overall body size, but there were no detectable differences in asymmetry. Body size was positively correlated with body mass, and …

The Role Of Extrafloral Nectaries And Saponins In Plantherbivore Interactions Of Inga Sierrae (Fabaceae: Mimosaceae), November 2009, Kevin Davis

Monteverde Institute: Tropical Ecology and Conservation

Trees of the Neotropical genus Inga are noted for the use of extrafloral nectaries (EFNs) and secondary compounds to protect against herbivores. For Inga sierrae, the production of Extra-EFNs (EEFNs) has been suggested to confer fitness on fledgling leaves, while the role of saponins on herbivory remains unclear. This study investigates the potential trade-off between EEFN and saponin production and its effect on herbivory. I recorded percent herbivory on fledgling leaves during a three week period and measured saponin contents for I. sierrae trees at two different study sites at 1525m in Monteverde, Costa Rica. Encounter surveys were conducted to …

Site Fidelity In Two Species Of Cyclocephala (Scarabaeidae) To Xanthosoma Robumstum (Araceae), November 2009, Margaret Hendricks

Monteverde Institute: Tropical Ecology and Conservation

Mark and recaptured methods were utilized to determine the site fidelity of two species of scarabid pollinators to a patch of Xanthosoma robustum in Monterverde, Costa Rica. Sex ratios remained constant with previous studies, exhibiting a higher proportion of males found per inflorescence than females. One-way ANOVA tests of variance supported evidence that female Cyclocephala are more prevalent in first day inflorescences. One-way ANOVA tests also concluded that scarab pollinators exhibit no fidelity to the study patch, The existence of a more resource rich patch in the area could account for the low fidelity observed. The selection for low fidelity …

Rodent Diversity In Relation To Atlantic And Pacific Slopes In A Neotropical Cloud Forest, November 2009, Justine Smith

Monteverde Institute: Tropical Ecology and Conservation

Mountainous regions in Costa Rica are characterized by windward/leeward effects caused by easterly trade winds and orographic cloud formation. The Pacific slope is generally drier and more seasonal compared to the Atlantic slope. These factors tend to favor higher biodiversity for a given taxon on the Atlantic slope. Live traps were used to test this for a tropical Cloud Forest rodent community on either side of the Continental Divide. Six species were captured overall. All six species were present on the Atlantic slope and three were present on the Pacific slope. As predicted, rodent diversity, including richness and evenness, was …

To Build Resilience: Leader Influence On Mental Hardiness, Paul T. Bartone, Charles L. Barry, Robert E. Armstrong

Defense Horizons

The military profession is inherently stressful and is getting more so for U.S. troops, who are deploying more often and for longer periods of time on missions that are multifaceted, changeable, and ambiguous. Such stressful conditions can lead to a range of health problems and performance decrements even among leaders. But not everyone reacts in negative ways to environmental stress. Most people remain healthy and continue to perform well even in the face of high stress levels. While much attention in recent years has focused on identifying and treating stress-related breakdowns such as post-traumatic stress disorder, scant investment has gone …

No-Till Tomato Production, Bradley L. Booker

Master's Theses

Tillage increases erosion rates and diminishes the quality of soils but has traditionally been a way to manage weeds and prepare a seedbed. No-till vegetable production can ameliorate the ill-effects of tillage in an economically effective way but has not been studied much in California. The objective of this thesis was to determine the viability of no-till vegetable cropping on the Central Coast of California. Tomatoes were grown in no-till and conventionally tilled treatments. Total yield, fruit weight, weed emergence, soil bulk density, soil aggregate stability, and soil organic carbon content were measured and compared. Yields and soil tests in …

Implementation Of Sustainable Management Practices At Two California Central Coast Vineyards And Their Effects On Soil Fertility, Dawn M. Stimson

Master's Theses

Implementation of Sustainable Management Practices at Two California Central Coast Vineyards and Their Effects on Soil Fertility

Dawn Michelle Stimson

“Sustainable agriculture” has gained increased popularity in recent years. This study was conducted to determine the effects of sustainable management practices on soil fertility at two California Central Coast vineyards. The effects of cover crops (Erosion Control Mix - blando brome [Bromus hordeaceus], hykon rose clover [Trifolium hirtum All.], and zorro annual fescue [Vulpia mourns]), green waste compost (Forest Blend), and reduced tillage on soil fertility were investigated in San Luis Obispo, California on a clay and sandy loam soil. …

Review Of Interventions For Parental Depression From Toddlerhood To Adolescence, R. C. Boyd, Jane Gillham

Psychology Faculty Works

Because of the recurrent course, significant burden, and intergenerational impact of depression, there is a great need for interventions for depressed parents and their children. This article reviews eight interventions that 1) aim to impact the functioning and well-being of 18-month to 18-year old children of depressed parents and 2) have been evaluated in controlled studies. The interventions are described and the empirical evidence of their efficacy is reviewed and critiqued. Existing research points to several promising intervention strategies, such as psychoeducation about parental depression, addressing parenting in adult depression treatment, promoting positive parent-child interactions, and teaching coping skills to …

Hall V. Nalco Co.: Redefining Female Infertility, Erin Percy

Louisiana Law Review

No abstract provided.

Using Rights To Counter “Gender-Specific” Wrongs, Theresa W. Tobin

Philosophy Faculty Research and Publications

One popular strategy of opposition to practices of female genital cutting (FCG) is rooted in the global feminist movement. Arguing that women’s rights are human rights, global feminists contend that practices of FGC are a culturally specific manifestation of gender-based oppression that violates a number of rights. Many African feminists resist a women’s rights approach. They argue that by focusing on gender as the primary axis of oppression affecting the African communities where FGC occurs, a women’s rights approach has misrepresented African women as passive victims who need to be rescued from African men and has obscured the role of …

Fragmentation Properties Of Three-Membered Ring Heterocyclic Molecules By Partial Ion Yield Spectroscopy: C2h4o And C2h4s, Wayne C. Stolte, I. Dumitriu, S-W Yu, Gunnar Ohrwall, Maria Novella Piancastelli, Dennis W. Lindle

Chemistry and Biochemistry Faculty Research

We investigated the photofragmentation properties of two three-membered ring heterocyclic molecules, C₂H₄O and C₂H₄S, by total and partial ion yield spectroscopy. Positive and negative ions have been collected as a function of photon energy around the C 1s and O 1s ionization thresholds in C₂H₄O, and around the S 2p and C 1s thresholds in C₂H₄S. We underline similarities and differences between these two analogous systems. We present a new assignment of the spectral features around the C K-edge and the sulfur L_{2 …}

Plains Co2 Reduction (Pcor) Partnership Atlas, Wesley D. Peck, Katherine K. Anagnost, Barry W. Botnen, Lisa S. Botnen, Daniel J. Daly, Charles D. Gorecki, Megan M. Grove, John A. Harju, Melanie D. Jensen, Michael L. Jones, Steven A. Smith, James A. Sorensen, Edward N. Steadman, Stephanie L. Wolfe, Andrea T. Mcnemar, John T. Litynski, Sean I. Plasynski

EERC Maps and Infographics

The Plains CO2 Reduction (PCOR) atlas, 3rd edition, introduces global climate change and provides a regional profile of CO₂ sources and potential sinks across the PCOR Partnership region. Carbon storage offers a promising set of technologies through which CO₂ can be stored for long periods of time.

The History Of The Illinois River And The Decline Of A Native Species, Paige Mettler-Cherry, Marian Smith

The Confluence (2009-2020)

Floodplains as connectors to rivers are essential parts of the ecosystem; endangered plants chart progress or decline on the the Illinois River.

My Confidence In Our Creator God, David Steen

Lake Union Herald

No abstract provided.

Every Genome Sequence Needs A Good Map, Harris A. Lewin, Denis M. Larkin, J. U. Pontius, Stephen J. O'Brien

Biology Faculty Articles

No abstract provided.

Molecular And Chromosomal Evidence For Allopolyploidy In Soybean, Navdeep Gill, Seth Findley, Jason G. Walling, Christian Hans, Jianxin Ma, Jeff Doyle, Gary Stacey, Scott A. Jackson

Biology Faculty Articles

Recent studies have documented that the soybean (Glycine max) genome has undergone two rounds of large-scale genome and/or segmental duplication. To shed light on the timing and nature of these duplication events, we characterized and analyzed two subfamilies of high-copy centromeric satellite repeats, CentGm-1 and CentGm-2, using a combination of computational and molecular cytogenetic approaches. These two subfamilies of satellite repeats mark distinct subsets of soybean centromeres and, in at least one case, a pair of homologs, suggesting their origins from an allopolyploid event. The satellite monomers of each subfamily are arranged in large tandem arrays, and intermingled …

Novel Lc8 Mutations Have Disparate Effects On The Assembly And Stability Of Flagellar Complexes, Pinfen Yang, Chun Yang, Maureen Wirschell, Stephanie Davis

Biological Sciences Faculty Research and Publications

LC8 functions as a dimer crucial for a variety of molecular motors and non-motor complexes. Emerging models, founded on structural studies, suggest that the LC8 dimer promotes the stability and refolding of dimeric target proteins in molecular complexes, and its interactions with selective target proteins, including dynein subunits, is regulated by LC8 phosphorylation, which is proposed to prevent LC8 dimerization. To test these hypotheses in vivo, we determine the impacts of two new LC8 mutations on the assembly and stability of defined LC8-containing complexes in Chlamydomonas flagella. The three types of dyneins and the radial spoke are disparately affected …

Influx Of Calcium Through L-Type Calcium Channels In Early Postnatal Regulation Of Chloride Transporters In The Rat Hippocampus, Jennifer Grace Bray, Michelle Mynlieff

Biological Sciences Faculty Research and Publications

During the early postnatal period, GABA_B receptor activation facilitates L-type calcium current in rat hippocampus. One developmental process that L-type current may regulate is the change in expression of the K⁺Cl⁻ co-transporter (KCC2) and N⁺K⁺2Cl⁻ co-transporter (NKCC1), which are involved in the maturation of the GABAergic system. The present study investigated the connection between L-type current, GABA_B receptors, and expression of chloride transporters during development. The facilitation of L-type current by GABA_B receptors is more prominent in the second week of development, with the highest percentage of cells exhibiting …

Camp Pulsing Of Denuded Mouse Oocytes Increases Meiotic Resumption Via Activation Of Amp-Activated Protein Kinase, Jing Chen, Maggie M. Chi, Kelle H. Moley, Stephen M. Downs

Biological Sciences Faculty Research and Publications

cAMP plays a critical role in the control of oocyte maturation, as a high level of cAMP maintains oocyte arrest at the first meiotic prophase. Yet this study shows that pulsing meiotically arrested denuded oocytes (DO) with cAMP induces oocyte maturation through the activation of AMP-activated protein kinase (PRKA). Short-term (3 h) pulsing of meiotically arrested oocytes with forskolin, an adenyl cyclase (AC) activator, increased oocyte cAMP, led to elevated AMP, and induced oocyte meiotic resumption compared to oocytes continuously cultured in the control medium with or without forskolin. Western analysis showed that germinal vesicle (GV)-stage oocytes after forskolin pulsing …

Exploiting Multiple Sensory Modalities In Brain-Machine Interfaces, Aaron J. Suminski, Dennis C. Tkach, Nicholas G. Hatsopoulos

Biomedical Engineering Faculty Research and Publications

Recent improvements in cortically-controlled brain-machine interfaces (BMIs) have raised hopes that such technologies may improve the quality of life of severely motor-disabled patients. However, current generation BMIs do not perform up to their potential due to the neglect of the full range of sensory feedback in their strategies for training and control. Here we confirm that neurons in the primary motor cortex (MI) encode sensory information and demonstrate a significant heterogeneity in their responses with respect to the type of sensory modality available to the subject about a reaching task. We further show using mutual information and directional tuning analyses …

Quantitative Determination Of Free Glycerol And Myo-Inositol From Plasma And Tissue By High-Performance Liquid Chromatography, Ryan A. Frieler, Dane J. Mitteness, Mikhail Y. Golovko, Heidi M. Gienger, Thad A. Rosenberger

Faculty and Staff Publications

A high-performance liquid chromatographic method that accurately measures glycerol and myo-inositol from plasma and tissue is described. The method incorporates a pre-column derivatization reaction using aqueous extracts with benzoyl chloride as a modifying agent. The benzoylated derivatives are isolated by HPLC using reversed-phase gradient chromatography and quantified via absorbance detection at 231 nm. The benzoylated derivatives of glycerol and myo-inositol are well resolved from other known carbohydrates, internal standard and other contaminants encountered within samples and during incubation. The benzoylation of these analytes reach a maximum between 3.5 and 6 h of incubation and are stable for at least 24 …

Convergence Of Hormones, Inflammation, And Energy-Related Factors: A Novel Pathway Of Cancer Etiology, Martha L. Slattery, Frank A. Fitzpatrick

Faculty and Staff Publications

Colorectal cancer (CRC) is a multifactorial disease with several hypothesized etiologic factors including inflammatory processes; hormones such as estrogen, androgen, and insulin; and energy-related factors. We present evidence that integrates these elements in a pathway we call the convergence of hormones, inflammation, and energy-related factors (CHIEF). First, given the physiology of the gut, substantial epidemiologic and molecular data support the hypothesis that activation of innate immunity in the normal gut mucosa by various environmental agents (commensal bacteria, dietary antigens, mucosal irritants, pathogens) and endogenous factors such as estrogen, androgens, and insulin levels provokes basal inflammation as an underlying factor of …

Acid Rain: The Effects, Torrey Mortimer

Social Sciences

In a world experiencing increasing population, urbanization, and developing nations looking to compete on a global market with post-industrial nations, the effects of acid precipitation require greater consideration. As the world’s energy demand rises, and with the cheapest and most abundant source of energy being coal, the occurrence of acid precipitation is on the rise.

The goal of my project is to research and report on the effects of acid deposition on humans, animals and the environment that surrounds them. When I have completed my project, I hope to be able to explain the impacts that acid deposition has on …

Cross-Sectional Dating Of Novel Haplotypes Of Herv-K 113 And Herv-K 115 Indicate These Proviruses Originated In Africa Before Homo Sapiens, Aashish Jha, Satish Pillai, Vanessa York, Elizabeth Sharp, Emily Storm, Douglas Wachter, Jeffrey Martin, Steven Deeks, Michael Rosenberg, Douglas Nixon, Keith Garrison

School of Science Faculty Works

The human genome, human endogenous retroviruses (HERV), of which HERV-K113 and HERV-K115 are the only known full-length proviruses that are insertionally polymorphic. Although a handful of previously published papers have documented their prevalence in the global population; to date, there has been no report on their prevalence in the United States population. Here, we studied the geographic distribution of K113 and K115 among 156 HIV-1+ subjects from the United States, including African Americans, Hispanics, and Caucasians. In the individuals studied, we found higher insertion frequencies of K113 (21%) and K115 (35%) in African Americans compared with Caucasians (K113 9% and …

Wolverine Gene Flow Across A Narrow Climatic Niche, Michael K. Schwartz, Jeffrey P. Copeland, Neil J. Anderson, John R. Squires, Robert M. Inman, Kevin Scot Mckelvey, Kristine L. Pilgrim, Lisette P. Waits, Samuel A. Cushman

Wildlife Biology Faculty Publications

Wolverines (Guio guio) are one of the rarest carnivores in the contiguous United States. Effective population sizes in Montana, Idaho, and Wyoming, where most of the wolverines in the contiguous United States exist, were calculated to be 35 (credible limits, 28 52) suggesting low abundance. Landscape features that influence wolverine population substructure and gene flow are largely unknown. Recent work has identified strong associations between areas with persistent spring snow and wolverine presence and range. We tested whether a dispersal model in which wolverines prefer to disperse through areas characterized by persistent spring snow cover produced least-cost paths among all …

Activity-Aware Ecg-Based Patient Authentication For Remote Health Monitoring, Janani Sriram, Minho Shin, Tanzeem Choudhury, David Kotz

Dartmouth Scholarship

Mobile medical sensors promise to provide an efficient, accurate, and economic way to monitor patients' health outside the hospital. Patient authentication is a necessary security requirement in remote health monitoring scenarios. The monitoring system needs to make sure that the data is coming from the right person before any medical or financial decisions are made based on the data. Credential-based authentication methods (e.g., passwords, certificates) are not well-suited for remote healthcare as patients could hand over credentials to someone else. Furthermore, one-time authentication using credentials or trait-based biometrics (e.g., face, fingerprints, iris) do not cover the entire monitoring period and …

Analysis Of Subgroup Data In Clinical Trials, Kao-Tai Tsai, Karl E. Peace

Biostatistics: Faculty Presentations (2003-2018)

This conference abstract was published in the Proceedings of the Sixteenth Annual Biopharmaceutical Applied Statistics Symposium.

Analysis Of Γ-Irradiated Synthetic Bone Grafts By ²⁹Si Mas-Nmr Spectroscopy, Calorimetry And Xrd, D. Boyd, S. Murphy, Mark R. Towler, A. W. Wren, S. Hayakawa

Chemical and Biochemical Engineering Faculty Research & Creative Works

Ca-Sr-Zn-Si glasses have demonstrated excellent biocompatibility both in vitro using the MTT assay with L929 mouse fibroblast cells, and in vivo using healthy and ovariectomized female Wistar rats. However, the biological evaluation of the materials was performed on glass granules that were autoclaved, rather than γ-irradiated; the sterilisation procedure required prior to implantation of these materials in the human body. Given the fact that when a glass is exposed to ionizing radiation changes in its physical properties can take place, it is imperative to determine whether the structure of such glasses will be altered as a result of exposure to …