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Search Results: 1 - 10 of 170527 matches for " Ann E. Impullitti "
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Anatomical Response and Infection of Soybean during Latent and Pathogenic Infection by Type A and B of Phialophora gregata
Ann E. Impullitti, Dean K. Malvick
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0098311
Abstract: Growth and anatomical responses of plants during latent and pathogenic infection by fungal pathogens are not well understood. The interactions between soybean (Glycine max) and two types of the pathogen Phialophora gregata were investigated to determine how plants respond during latent and pathogenic infection. Stems of soybean cultivars with different or no genes for resistance to infection by P. gregata were inoculated with wildtype or GFP and RFP-labeled strains of types A or B of P. gregata. Plants were sectioned during latent and pathogenic infection, examined with transmitted light or fluorescent microscopy, and quantitative differences in vessels and qualitative differences in infection were assessed using captured images. During latent infection, the number of vessels was similar in resistant and susceptible plants infected with type A or B compared to the control, and fungal infection was rarely observed in vessels. During pathogenic infection, the resistant cultivars had 20 to 25% more vessels than the uninfected plants, and fungal hyphae were readily observed in the vessels. Furthermore, during the pathogenic phase in a resistant cultivar, P.gregata type A-GFP was limited to outside of the primary xylem, while P.gregata type B-RFP was observed in the primary xylem. The opposite occurred with the susceptible cultivar, where PgA-GFP was observed in the primary xylem and PgB-RFP was limited to the interfascicular region. In summary, soybean cultivars with resistance to BSR produced more vessels and can restrict or exclude P. gregata from the vascular system compared to susceptible cultivars. Structural resistance mechanisms potentially compensate for loss of vessel function and disrupted water movement.
ACCEPT-NMR: A New Tool for the Analysis of Crystal Contacts and Their Links to NMR Chemical Shift Perturbations  [PDF]
Ivan V. Sergeyev, Ann E. McDermott
Journal of Crystallization Process and Technology (JCPT) , 2013, DOI: 10.4236/jcpt.2013.31003

We have developed an open-source cross-platform software toolkit entitled ACCEPT-NMR (Automated Crystal Contact Extrapolation/Prediction Toolkit for NMR) as a helpful tool to automate many of the complex tasks required to find and visualize crystal contacts in structures of biomolecules and biomolecular assemblies. This toolkit provides many powerful features geared toward NMR spectroscopy and related disciplines, such as isotopic labeling, advanced visualization options, and reporting tools. Using this software, we have undertaken a survey of available chemical shift data in the literature and deposited in the BMRB, and show that the mere presence of one or more crystal contacts to a residue confers an approximately 65% likelihood of significant chemical shift perturbations (relative to solution NMR chemical shifts). The presence of each additional crystal contact subsequently increases this probability, resulting in predictive accuracies in excess of 80% in many cases. Conversely, the presence of a significant experimental chemical shift perturbation indicates a >60% likelihood of finding one or more crystal contacts to a particular residue. Pinpointing sites likely to experience large CSPs is critical to mapping solution NMR chemical shifts onto solid-state NMR data as a basis for preliminary assignments, and can thus simplify the assignment process for complex biomolecules. Mapping observed CSPs onto the molecular structure, on the other hand, can indicate the presence of crystal interfaces where no crystal structure is available. Finally, by detecting sites critical to intermolecular interfaces, ACCEPT-NMR can help guide experimental approaches (e.g. isotopic labeling schemes) to detect and probe specific inter-subunit interactions.

Part-Time Nurse Faculty Intent to Remain Employed in Academia: A Cross-Sectional Study  [PDF]
Era Mae Ferron, Ann E. Tourangeau
Open Journal of Nursing (OJN) , 2017, DOI: 10.4236/ojn.2017.72018
Abstract: The purpose of this study was to test and refine a model of part-time nurse faculty intent to remain employed in the academic organization. Cross-sectional survey methods were used. A total of 282 part-time nurse faculty working in colleges or universities in Ontario, Canada were invited to participate. Survey instruments and items measured demographic, workplace, nurse responses to the workplace, and external variables. Correlation, multiple regression, and mediation analyses were conducted using data from 119 participants (47.6% response rate). Of the 19 variables hypothesized to affect intent to remain employed in the academic organization, seven influenced intent to remain. The resulting model indicated that the older the part-time nurse faculty member, the lower the level of intent to remain and the more years worked in the organization, the higher the level of intent to remain. The more opportunities perceived to exist outside of the employing organization, the higher the level of intent to remain. Additionally, the more satisfied part-time nurse faculty were with their job overall, the higher their level of intent to remain. In the workplace, the more support from the leader, the more formal or informal recognition received, and the more fair work procedures were perceived to be, the higher levels of part-time nurse faculty intent to remain employed in the academic organization, mediated by job satisfaction. Although age, organizational tenure, and external career opportunities are non-modifiable variables, deans and directors can encourage part-time nurse faculty to remain employed in their academic job by focusing on enhancing overall job satisfaction. Effective strategies may include formal or informal acknowledgement of good performance, consistent verbal and behavioural support, and implementation of procedural practices, such as performance evaluations and pay raises in a fair manner.
An Exploratory Analysis of the Correlates of Risk-Taking Propensity in Canadian Military Personnel  [PDF]
Jennifer E. C. Lee, Ann-Renée Blais
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.51010

The present paper, accepted on February 14 th, is the final corrected version.

There has been growing interest in the impacts of combat exposure on behavioral health outcomes such as alcohol use, risky driving and smoking in research on military personnel in recent years. One psychological factor that may explain such outcomes is an individuals’ risk-taking propensity. The present study thus examined the relationships of risk-taking propensity with demographic variables, deployment history, as well as a number of health and risk behaviors. Data collected as part of a comprehensive health survey in the Canadian Armed Forces (CAF) in 2008 and 2009 were analyzed. Participants included a sample of 2157 Regular Force members, stratified to reflect the Regular Force in terms of rank, sex, and deployment history. Using subscales of the Domain-Specific Risk Taking Scale (DOSPERT), participants’ levels of risk-taking propensity in the health and safety and in the recreational domains were assessed. Results consistently pointed to the higher levels of risk-taking propensity among younger respondents and men. While non-commissioned members (NCMs) reported higher levels of health and safety risk-taking propensity than officers, officers reported higher levels of recreational risk-taking propensity than NCMs. Variation in health and safety, but not recreational risk-taking propensity was found by deployment history. Health and safety risk-taking propensity was associated with a number of health-compromising behaviors (e.g., poor eating habits, inconsistent helmet use, smoking, problem drinking), while recreational risk-taking propensity was associated with a number of health-enhancing behaviors (e.g., good eating habits, physical activity, never smoking). Results thus point to noteworthy variations in the correlates of risk-taking propensity by risk domain among military personnel.

The role of steroids in follicular growth
Ann E Drummond
Reproductive Biology and Endocrinology , 2006, DOI: 10.1186/1477-7827-4-16
Abstract: Follicular development begins during foetal life with the transformation of primordial germ cells into oocytes and their enclosure in structures called follicles. In most mammals, primordial follicles form either before, or in the first few days after birth. Primordial follicles give rise to primary follicles which transform into preantral (secondary follicles) then antral follicles (tertiary follicles) and finally preovulatory, Graafian follicles, in a co-ordinated series of transitions regulated by hormones and local intraovarian factors. The growth and differentiation of follicles from the primordial population is termed folliculogenesis. With the LH surge, Graafian follicles rupture and oocytes are released, leaving the follicular cells to luteinise and form a corpus luteum.Sex steroids play important roles in the growth and differentiation of reproductive tissues and in the maintenance of fertility. Produced de novo from cholesterol, progestins, androgens and oestrogens are synthesised by the ovary in a sequential manner, with each serving as substrate for the subsequent steroid in the pathway. The two-cell, two-gonadotrophin model describes the role of theca and granulosa cells in the production of steroids, highlighting the cooperation between the two cell types, which is necessary for oestrogen production (Figure 1). Given that signal transduction for these hormones usually requires the binding and activation of a ligand-specific receptor, one cannot easily dissociate these components and assign definitive roles. The steroid hormones signal via nuclear receptors to regulate transcriptional events. These receptors form part of a nuclear receptor superfamily, all of which contain common structural elements [1,2]. These include a highly conserved DNA binding domain (DBD), a moderately conserved ligand binding domain (LBD) and 2 transactivation domains, AF1 located in domain A/B and AF2 in domain E/F (Figure 2). This review will address the roles that steroid ho
The legacy of the school of Auxerre: glossed Bibles, school rhetoric, and the Universal Gilbert
Matter,E. Ann;
Temas medievales , 2006,
Abstract: this article analyzes the influence exerted by gilbert d'auxerre's commentary on the lamentations of jeremiah in shaping the ordinary gloss. the author points out that gilbert's work is an important link in the transmission and reinterpretation of the carolingian exegetic tradition to the following centuries, and reminds us at the same time that gilbert, being one of the essential links between monastic and scholastic theology, between the culture of the carolingian renaissance and scholasticism, must not be ignored.
Interpretive Hermeneutic Phenomenology: Clarifying Understanding
Ann E McManus Holroyd
Indo-Pacific Journal of Phenomenology , 2007,
Abstract: The philosophical orientation of Gadamerian hermeneutic phenomenology is explored in this paper. Gadamer offers a hermeneutics of the humanities that differs significantly from models of the human sciences historically rooted in scientific methodologies. In particular, Gadamer proposes that understanding is first a mode of being before it is a mode of knowing; what this effectively offers is an alternative to the traditional way of understanding in the human sciences. This paper details why the work of hermeneutics is not to develop a procedure for understanding, but to clarify the conditions of understanding. In this explication, the author examines the hermeneutic experience and, in the process, relates it to both the practical and the historical horizons of the lifeworld of health professionals, particularly nurses. Indo-Pacific Journal of Phenomenology<, Volume 7, Edition 2 September 2007
Exercise for people with hip or knee osteoarthritis: a comparison of land-based and aquatic interventions
Ann E Rahmann
Open Access Journal of Sports Medicine , 2010, DOI: http://dx.doi.org/10.2147/OAJSM.S6941
Abstract: cise for people with hip or knee osteoarthritis: a comparison of land-based and aquatic interventions Review (8001) Total Article Views Authors: Ann E Rahmann Published Date July 2010 Volume 2010:1 Pages 123 - 135 DOI: http://dx.doi.org/10.2147/OAJSM.S6941 Ann E Rahmann Division of Physiotherapy, School of Health and Rehabilitation Sciences, The University of Queensland, St Lucia, Queensland, Australia Abstract: Expert opinion considers the referral of people with osteoarthritis (OA) for physiotherapy to be a core component of managing the functional disability and pain of the disease. Clinical guidelines for the physiotherapy management of people with OA focus on three main areas: exercise, pain relief, and specific manual therapy techniques. Land-based group and individual physiotherapy exercise programs, as well as manual therapy, have demonstrated a distinct benefit in favor of physiotherapy intervention. Similarly, both general and specific aquatic physiotherapy exercise programs have shown positive outcomes for people with OA. This review will focus primarily on therapeutic exercise to improve strength and fitness and reduce pain in people with hip or knee OA. An overview of the principles of hydrodynamics relevant to aquatic exercise is also included to facilitate an understanding of effective aquatic exercise programs. The issue of compliance with exercise programs will also be discussed. Clinicians will, therefore, gain an understanding of the benefits of land-based and aquatic exercise for people with OA.
Diagnosis and treatment of multiple sclerosis in pediatric and adolescent patients: current status and future therapies
E Ann Yeh
Adolescent Health, Medicine and Therapeutics , 2010, DOI: http://dx.doi.org/10.2147/AHMT.S8130
Abstract: gnosis and treatment of multiple sclerosis in pediatric and adolescent patients: current status and future therapies Review (4987) Total Article Views Authors: E Ann Yeh Published Date July 2010 Volume 2010:1 Pages 61 - 71 DOI: http://dx.doi.org/10.2147/AHMT.S8130 E Ann Yeh Department of Neurology, Pediatric MS Center of the JNI, SUNY Buffalo, Buffalo, NY, USA Abstract: Pediatric-onset multiple sclerosis (MS) comprises approximately 3%–5% of cases of MS in North America. Recent years have seen significant advances in the diagnosis and treatment of this condition, including the introduction of proposed diagnostic criteria for pediatric demyelinating disorders, and a growing body of knowledge regarding treatment options. This article reviews current approaches to the diagnosis and management of pediatric MS.
Feminist Criticism in Television Studies
E. Ann Kaplan
MedieKultur : Journal of Media and Communication Research , 1986,
Abstract: Feminist Criticism in Television Studies
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