Digital Commons Network^™

De La Repulsion Chez Les Insectes - Cas D'éTude Du Moustique Anopheles Gambiae Et De La Mouche Blanche Bemisia Tabaci -, Emilie Deletre

All PhD Dissertations

D'après la FAO, il faudra nourrir 9 milliards de personnes en 2050 ce qui équivaudrait à augmenter de 70% la production actuelle. Une manière simple d'augmenter la production serait de limiter les pertes de rendement et de récolte en luttant contre les insectes. Il faudra donc produire plus mais il faut produire mieux. Les insecticides ont été et sont largement utilisés mais avec l'apparition de résistances, la pollution de l'environnement et l'impact sur la santé nous amène à chercher de nouvelles alternatives de lutte. La FAO a également montré que l'Afrique avait le meilleur potentiel de changement. En effet, le …

Effects Of Drought On The Production Of Electrophysiologically Active Biogenic Volatiles Important For Cereal Pest Management, Frank Chidawanyika

All PhD Dissertations

Drought has the potential to reset trophic interactions within natural and managed ecosystems. I tested how drought stress in maize and companion plants that are used in cereal agroecosystems of Kenya affect oviposition preference, larval feeding, and development of the spotted stemborer, Chilo partellus Swinhoe (Lepidoptera: Crambidae). Five host species were tested (all Poaceae): maize (Zea mays L.), Napier grass (Pennisetum purpureum Schumach), signal grass [Brachiaria brizantha (A. Rich) Stapf], Brachiaria cv 'Mulato', and molasses grass [Melinis minutiflora (Beauv.)]. Under periods of water deficit, maize was oviposited on as much as under control unstressed maize in both choice and no-choice …

Odour-Based Strategies For Surveillance And Behavioural Disruption Of Host-Seeking Malaria And Other Mosquitoes, Collins K. Mweresa

All PhD Dissertations

Malaria is one of the most important diseases that threaten the lives of a large proportion of the human population in the tropics. Currently, the application of novel technologies for malaria control is encouraged to provide reliable and robust tools for monitoring of anopheline vectors and to reduce the application of chemical insecticides. This thesis has investigated the potential of using odour-based strategies for surveillance and behavioural disruption of host-seeking malaria and other mosquitoes. All studies were done under semifield and field conditions in western Kenya. A study conducted in a semi-field enclosure demonstrated that nylon strips performed significantly better …

Ecosystem Services And Disservices In Small-Scale Tropical Agriculture, Peter Steward,

All PhD Dissertations

Small-scale farmlands are dynamic systems crucial to the food-security and livelihoods of more than two billion people and there is political pressure in many developing nations to consolidate and expand small farms into larger units of management. This could have consequences for agro-ecosystem processes and the ecosystem services and disservices that regulate crop production. This thesis aims to highlight and address these issues in smallholder farming landscapes, which are poorly studied and represent significant knowledge gaps.Research on pollination and biological control is biased towards large-scale systems,and biological control research shows a strong geographic bias to temperate developed nations, whilst pollination …

Development Of A Gravid Mosquito Trap For Surveillance Of The Malaria Vector Anopheles Gambiae S.I. Giles (Diptera: Culicidae), Dugassa Lemma Sisay

All PhD Dissertations

This study was intended to develop a trap for surveillance of gravid malaria vectors,Anopheles gambiae s.l., in outdoor venue.First, a suite of tools were developed for studying the oviposition behaviour of gravid An. gambiae s.l. A square of four electric nets with yellow sticky filmmounted boards to collect electrocuted mosquitoes was developed as a tool to quantify gravid mosquitoes approaching an oviposition site. On average 33% (95% CI 28-38%) of mosquitoes released were recollected with the e-nets. The electric net (e-net) setup was evaluated for any influence on the response of gravid mosquitoes to a pond it surrounds compared to …

Introduction To Animal- And Nature-Assisted Therapies: A Service-Learning Model For Rural Social Work, Laura J. Praglin, Linda L. Nebbe

Contemporary Rural Social Work Journal

This teaching note details the teaching philosophy and practices of an innovative university service-learning course in nature- and animal-assisted therapies. The course took place at a wildlife rehabilitation center, and students engaged as counselors, putting academic theories into action by facilitating an “animal camp” for 25 at-risk children. The course represented a “best practice” in rural social work given its intensive focus upon social work’s ecological and person-in-environment perspectives; multidisciplinary, collaborative community-based partnerships; and evocation of a rural schoolhouse model.

Contemporary Rural Social Work - 2014 (Volume 6, Number 1)

Contemporary Rural Social Work Journal

Contemporary Rural Social Work - Fall 2014 (Volume 6, Number 1)

Full issue

The Scope Of Published Population Genetic Data For Indo-Pacific Marine Fauna And Future Research Opportunities In The Region, Jude Keyse, Eric D. Crandall, Robert J. Toonen, Christopher P. Meyer, Eric A. Treml, Cynthia Riginos

School of Natural Sciences Faculty Publications and Presentations

Marine biodiversity reaches its pinnacle in the tropical Indo-Pacific region, with high levels of both species richness and endemism, especially in coral reef habitats. While this pattern of biodiversity has been known to biogeographers for centuries, causal mechanisms remain enigmatic. Over the past 20 yrs, genetic markers have been employed by many researchers as a tool to elucidate patterns of biodiversity above and below the species level, as well as to make inferences about the underlying processes of diversification, demographic history, and dispersal. In a quantitative, comparative framework, these data can be synthesized to address questions about this bewildering diversity …

An Evaluation Of Pharmacogenomic Information Provided By Five Common Drug Information Resources, K.T. L. Vaughan, Kelly L. Scolaro, Heidi N. Anksorus, Mary W. Roederer

Libraries

No abstract provided.

"Student Collective" Yearbook 2013-2014, George Fox University Archives

Yearbooks

No abstract provided.

Football Game Program 3 2014, George Fox University Archives

Football

Football Game Program 3 2014

Football Game Program 4 2014, George Fox University Archives

Football

Football Game Program 4 2014

Gendered Readings On The Winning Short Stories In Cebuano Of The Don Carlos Palanca Memorial Awards, Ma. Dolores L. Aday

CNU Journal of Higher Education

This study attempts to examine the notions of gender in the first prize winning short stories in Cebuano of the Don Carlos Palanca Memorial Awards. These stories are discussed based on the social relations of men and women in the Cebuano society. The purpose of this study is to point out the dominant gender system as well as the role of women in the man- woman relationships in the societies projected in the stories. Further, it will also have to look into sexism in language as used in the narratives and conversations in the stories. The challenges to the dominant …

"The Crescent" Student Newspaper, December 8, 2014, George Fox University Archives

"The Crescent" Student Newspaper

Student newspaper of George Fox University.

"The Crescent" Student Newspaper, November 26, 2014, George Fox University Archives

"The Crescent" Student Newspaper

Student newspaper of George Fox University.

Victorian Sexual Politics And The Unsettling Case Of George Eliot’S Response To Walt Whitman, Beverley Rilett

Department of English: Faculty Publications

George Eliot and Walt Whitman, two of the most influential writers of the nineteenth century, are rarely discussed in relation to one another. They did not correspond, nor did either writer ever cross the Atlantic. There may have been several degrees of separation between Eliot and Whitman personally, but even from a distance, the two writers influenced each other’s careers. There has been some misconception that Eliot disdained and discounted Whitman. This essay seeks to refute that assumption by examining the context in which Eliot appeared to reject him. Perhaps more significantly, this essay breaks new critical ground by attributing …

Changing Forest Water Yields In Response To Climate Warming: Results From Long-Term Experimental Watershed Sites Across North America, Irena F. Creed, Adam T. Spargo, Julia A. Jones, Jim M. Buttle, Mary B. Adams, Fred D. Beall, Eric G. Booth, John L. Campbell, Dave Clow, Kelly Elder, Mark B. Green, Nancy B. Grimm, Chelcy Miniat, Patricia Ramlal, Amartya Saha, Stephen Sebestyen, Dave Spittlehouse, Shannon Sterling, Mark W. Williams, Rita Wrinkler, Huaxia Yao

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

Climate warming is projected to affect forest water yields but the effects are expected to vary. We investigated how forest type and age affect water yield resilience to climate warming. To answer this question, we examined the variability in historical water yields at long-term experimental catchments across Canada and the United States over 5-year cool and warm periods. Using the theoretical framework of the Budyko curve, we calculated the effects of climate warming on the annual partitioning of precipitation (P) into evapotranspiration (ET) and water yield. Deviation (d) was defined as a catchment’s change in actual ET divided by P …

Chapter 11 The Role Of Surveillance Methods And Technologies In Plant Biosecurity, Tom Kalaris, Daniel Fieselmann, Roger Magarey, Manuel Colunga-Garcia, Amy Roda, Darryl Hardie, Naomi Cogger, Nichole Hammond, P.A. Tony Martin, Peter Whittle

Zoonotics and Wildlife Disease: Publications

Countries design biosecurity systems to protect their animal, plant, and environmental resources from invasive alien species. Countries maintain biosecurity systems to safely manage trade and prevent the introduction of invasive pests (insects, diseases and weeds) through numerous pathways of entry. Plant biosecurity programmes seek to exclude exotic organisms from becoming established on agricultural crops, ornamental plants and “natural” areas. Without barriers for entry, invasive organisms can expand their range, colonize new territory and cause considerable economic and environmental damage (Magarey et al. 2009). Spatially, one country’s biosecurity efforts may be categorised as “pre-border”, “border” and “post-border” when describing that country’s …

The Impact Of Movements And Animal Density On Continental Scale Cattle Disease Outbreaks In The United States, Michael Buhnerkempe, Michael J. Tildesley, Tom Lindstrom, Daniel A. Grear, Katie Portacci, Ryan S. Miller, Jason E. Lombard, Marleen Werkman, Matt J. Keeling, Uno Wennergren, Colleen T. Webb

Zoonotics and Wildlife Disease: Publications

Globalization has increased the potential for the introduction and spread of novel pathogens over large spatial scales necessitating continental-scale disease models to guide emergency preparedness. Livestock disease spread models, such as those for the 2001 foot-and-mouth disease (FMD) epidemic in the United Kingdom, represent some of the best case studies of large-scale disease spread. However, generalization of these models to explore disease outcomes in other systems, such as the United States’s cattle industry, has been hampered by differences in system size and complexity and the absence of suitable livestock movement data. Here, a unique database of US cattle shipments allows …

Chapter 16 Case Study. Invasive Insects In Plant Biosecurity: The Asian Longhorned Beetle Eradication Program, Michael Stefan, Christine Markham, Robert Benjamin, Jeffrey Coath

Zoonotics and Wildlife Disease: Publications

Asian Longhorned Beetle (ALB), Anoplophora glabripennis (Motschulsky) (Coleoptera; Cerambycidae), is an invasive beetle that attacks and kills living and stressed host trees. Throughout the USA, ALB poses a serious economic and environmental threat to city, urban, rural and forested areas. ALB has an impact on the people and industries that depend on these natural resources and the environment in which they live. The woodborer attacks 13 genera of hardwood tree species in the USA. Preferred hosts include Acer spp. (maple, boxelder), Betula spp. (birch), Ulmus spp. (elm), Salix spp. (willow), and Aesculus spp. (horsechestnut, buckeye). In 2009, the United States …

Pathogens At The Livestock-Wildlife Interface In Western Alberta: Does Transmission Route Matter?, Mathieu Pruvot, Susan Kutz, Frank Van Der Meer, Marco Musiani, Herman W. Barkema, Karin Orsel

Zoonotics and Wildlife Disease: Publications

In southwestern Alberta, interactions between beef cattle and free-ranging elk (Cervus elaphus) may provide opportunities for pathogen transmission. To assess the importance of the transmission route on the potential for interspecies transmission, we conducted a cross-sectional study on four endemic livestock pathogens with three different transmission routes: Bovine Viral Diarrhea Virus and Bovine Herpesvirus 1 (predominantly direct transmission), Mycobacterium avium subsp. paratuberculosis (MAP) (indirect fecal-oral transmission), Neospora caninum (indirect transmission with definitive host). We assessed the occurrence of these pathogens in 28 cow-calf operations exposed or non-exposed to elk, and in 10 elk herds exposed or not to cattle. We …

Development Of Status Epilepticus, Sustained Calcium Elevations And Neuronal Injury In A Rat Survival Model Of Lethal Paraoxon Intoxication, Laxmikant Sudhir Deshpande, Dawn S. Carter, Kristin Phillips, Robert E. Blair, Robert J. Delorenzo

Neurology Publications

Paraoxon (POX) is an active metabolite of organophosphate (OP) pesticide parathion that has been weaponized and used against civilian populations. Exposure to POX produces high mortality. OP poisoning is often associated with chronic neurological disorders. In this study, we optimize a rat survival model of lethal POX exposures in order to mimic both acute and long-term effects of POX intoxication. Male Sprague–Dawley rats injected with POX (4 mg/kg, ice-cold PBS, s.c.) produced a rapid cholinergic crisis that evolved into status epilepticus (SE) and death within 6–8 min. The EEG profile for POX induced SE was characterized and showed clinical and …

The Big Shift: How Vcu Libraries Moved 1.5 Million Volumes To Prepare For The Construction Of A New Library, Ibironke Lawal, Patricia Selinger, Barbara Anderson

VCU Libraries Faculty and Staff Publications

Abstract

Virginia Commonwealth University Libraries (VCUL) has been faced with serious space problems for more than a decade. Initiatives to correct this include the digital shift. VCUL’s new policy stipulates that journal subscriptions should be electronic only, wherever available. Where publishers offer both print and online for the same price, the library donates the print instead of keeping them on the shelves. Replacing print series with the electronic version as they become available is another ongoing practice. Added to these is moving infrequently used or superseded materials to storage as a continuous activity. All these were short‐lived measures until now. …

A Multi-Site, Double-Blind, Placebo-Controlled Pilot Clinical Trial To Evaluate The Efficacy Of Buspirone As A Relapse-Prevention Treatment For Cocaine Dependence, Theresa M. Winhusen, Frankie Kropp, Robert Lindblad, Antoine Douaihy, Louise Haynes, Candace Hodgkins, Karen G. Chartier

Social Work Publications

Objective—To evaluate the potential efficacy of buspirone as a relapse-prevention treatment for cocaine dependence.

Method—A randomized, double-blind, placebo-controlled, 16-week pilot trial conducted at six clinical sites between August 2012 and June 2013. Adult crack cocaine users meeting DSM-IVTR criteria for current cocaine dependence scheduled to be in inpatient/residential substance use disorder (SUD) treatment for 12–19 days when randomized, and planning to enroll in local outpatient treatment through the end of the active treatment phase were randomized to buspirone titrated to 60 mg/day (n=35) or to placebo (n=27). All participants received psychosocial treatment as usually provided by the SUD treatment programs …

Dynamics Of Coupled Noisy Neural Oscillators With Heterogeneous Phase Resetting Curves, Cheng Ly

Statistical Sciences and Operations Research Publications

Pulse-coupled phase oscillators have been utilized in a variety of contexts. Motivated by neuroscience, we study a network of pulse-coupled phase oscillators receiving independent and correlated noise. An additional physiological attribute, heterogeneity, is incorporated in the phase resetting curve (PRC), which is a vital entity for modeling the biophysical dynamics of oscillators. An accurate probability density or mean field description is large dimensional, requiring reduction methods for tractability. We present a reduction method to capture the pairwise synchrony via the probability density of the phase differences, and explore the robustness of the method. We find the reduced methods can capture …

Clinical Features And Genetic Analysis Of 20 Chinese Patients With X-Linked Hyper-Igm Syndrome, Lin-Lin Wang, Wei Zhou, Wei Zhao, Zhi-Qing Tian, Wei-Fan Wang, Xiao-Fang Wang, Tong-Xin Chen

Pediatrics Publications

X-linked hyper-IgM syndrome (XHIGM) is one type of primary immunodeficiency diseases, resulting from defects in the CD40 ligand/CD40 signaling pathways. We retrospectively analyzed the clinical and molecular features of 20 Chinese patients diagnosed and followed up in hospitals affiliated to Shanghai Jiao Tong University School of Medicine from 1999 to 2013. The median onset age of these patients was 8.5 months (range: 20 days–21 months). Half of them had positive family histories, with a shorter diagnosis lag. The most common symptoms were recurrent sinopulmonary infections (18 patients, 90%), neutropenia (14 patients, 70%), oral ulcer (13 patients, 65%), and protracted diarrhea …

Metabolic Effects Of Acute Thiamine Depletion Are Reversed By Rapamycin In Breast And Leukemia Cells, Shuqian Liu, Sumitra Miriyala, Mignon A. Keaton, Craig T. Jordan, Christina Wiedl, Daret K. St. Clair, Jeffrey A. Moscow

Pediatrics Publications

Thiamine-dependent enzymes (TDEs) control metabolic pathways that are frequently altered in cancer and therefore present cancer-relevant targets. We have previously shown that the recombinant enzyme thiaminase cleaves and depletes intracellular thiamine, has growth inhibitory activity against leukemia and breast cancer cell lines, and that its growth inhibitory effects were reversed in leukemia cell lines by rapamycin. Now, we first show further evidence of thiaminase therapeutic potential by demonstrating its activity against breast and leukemia xenografts, and against a primary leukemia xenograft. We therefore further explored the metabolic effects of thiaminase in combination with rapamycin in leukemia and breast cell lines. …

Life2cl N (N = 4–6) Clusters: Double-Exchange Mediated Molecular Magnets, Kalpataru Pradhan, Purusottam Jena

Physics Publications

A systematic study of LiFe2Cl n (n = 4–6) clusters, based on gradient corrected density functional theory (DFT), shows that the electron contributed by Li can transform antiferromagnetic Fe2Cl n(n = 4 and 6) clusters into ferromagnetic clusters. In Fe2Cl6 (Fe2Cl4) cluster, the Fe atoms in +3 (+2) oxidation states are aligned antiferromagnetically, consistent with the super-exchange model. The extra electron from Li atom creates a charge disproportionation in the LiFe2Cl6(LiFe2Cl4) cluster that mediates the double-exchange interaction between the Fe atoms.Antiferromagnetic to ferromagnetic transition can also be induced by hole doping as seen to be the case with Fe2Cl5 which …

Why Is Low Waist-To-Chest Ratio Attractive In Males? The Mediating Roles Of Perceived Dominance, Fitness, And Protection Ability, Anthony E. Coy, Jeffrey D. Green, Michael E. Price

Psychology Publications

Past research suggests that a lower waist-to-chest ratio (WCR) in men (i.e., narrower waist and broader chest) is viewed as attractive by women. However, little work has directly examined why low WCRs are preferred. The current work merged insights from theory and past research to develop a model examining perceived dominance, fitness, and protection ability as mediators of to WCR-attractiveness relationship. These mediators and their link to both short-term (sexual) and long-term (relational) attractiveness were simultaneously tested by having 151 women rate one of 15 avatars, created from 3D body scans. Men with lower WCR were perceived as more physically …

Parental Strain, Mental Health Problems, And Parenting Practices: A Longitudinal Study, Alicia Borre, Wendy L. Kliewer

Psychology Publications

Although poor parenting practices place youth living in under resourced communities at heightened risk for adjustment difficulties, less is known about what influences parenting practices in those communities. The present study examines prospective linkages between three latent constructs: parental strain, mental health problems and parenting practices. Parental victimization by community violence and life stressors were indicative of parental strain; depressive, anxious, and hostile symptoms were indicators of parental mental health; and parental knowledge of their child’s activities and child disclosure were indicators of parenting practices. Interviews were conducted annually for 3 waves with 316 female caregivers (92% African American) parenting …