298 research outputs found

    Bennett, Agnes interview for the Miami Valley College of Nursing and Health Oral History Project

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    Carol Holdcraft interviewed Agnes Bennett on April 30, 2002 about the founding of Wright State University College of Nursing and Health. In the interview, Bennett discusses her career and her decision to come to Wright State as a faculty member for the College of Nursing and Health

    Gmeiner, Jayne interview for the Miami Valley College of Nursing and Health Oral History Project

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    Carol Holdcraft interviewed Jayne Gmeiner on November 15, 2006 about the founding of the Wright State University College of Nursing and Health. In the interview, Gmeiner discusses her career and her decision to come to Wright State as a student with the College of Nursing and Health

    Sommerville, Bonnie interview for the Miami Valley College of Nursing and Health Oral History Project

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    Carol Holdcraft and Donna Miles Curry interviewed Bonnie Sommerville on December 3, 2002 about the founding of Wright State University College of Nursing and Health. In the interview, Sommerville discusses her career and her decision to come to Wright State as a student and faculty member for the College of Nursing and Health

    Stormer, Karen interview for the Miami Valley College of Nursing and Health Oral History Project

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    Carol Holdcraft and Donna Miles Curry interviewed Karen Stormer on October 30, 2007 about the founding of the Wright State University College of Nursing and Health. In the interview Ms. Stormer discusses her career and her decision to come to Wright State as a student with the College of Nursing and Health

    Oroszi, Jill interview for the Miami Valley College of Nursing and Health Oral History Project

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    Donna Miles Curry, Carol Holdcraft, and Tara Rower interviewed Jill Oroszi on February 25, 2009 about her perspective on the growth and foundation of the program from the perspective of someone who previously was not directly involved with the profession

    Sucrose Improves Insecticide Activity Against Drosophila suzukii (Diptera: Drosophilidae)

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    The addition of sucrose to insecticides targeting spotted wing drosophila, Drosophila suzukii (Matsumura), enhanced lethality in laboratory, semifield, and field tests. In the laboratory, 0.1% sucrose added to a spray solution enhanced spotted wing drosophila feeding. Flies died 120 min earlier when exposed to spinosad residues at label rates enhanced with sucrose. Added sucrose reduced the LC50 for dried acetamiprid residues from 82 to 41 ppm in the spray solution. Laboratory bioassays of spotted wing drosophila mortality followed exposure to grape and blueberry foliage and/or fruit sprayed and aged in the field. On grape foliage, the addition of 2.4 g/liter of sugar with insecticide sprays resulted in an 11 and 6% increase of spotted wing drosophila mortality at 1 and 2 d exposures to residues, respectively, averaged over seven insecticides with three concentrations. In a separate experiment, spinetoram and cyantraniliprole reduced by 95-100% the larval infestation of blueberries, relative to the untreated control, 7 d after application at labeled rates when applied with 1.2 g/liter sucrose in a spray mixture, irrespective of rainfall; without sucrose infestation was reduced by 46-91%. Adding sugar to the organically acceptable spinosyn, Entrust, reduced larval infestation of strawberries by >50% relative to without sugar for five of the six sample dates during a season-long field trial. In a small-plot field test with blueberries, weekly applications in alternating sprays of sucrose plus reduced-risk insecticides, spinetoram or acetamiprid, reduced larval infestation relative to the untreated control by 76%; alternating bifenthrin and phosmet (without sucrose) reduced infestation by 65

    Sex Pheromone of the Scarab Beetle Phyllophaga ( Phytalus) georgiana (Horn)

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    The sex pheromone of Phyllophaga (Phytalus) georgiana was characterized as valine methyl ester, tentatively the l-enantiomer. This is the first sex pheromone identified from the Phyllophaga subgenus Phytalus. The pheromone was extracted from female glands, the active component isolated by coupled gas chromatography-electroantennogram detection analysis, characterized by mass spectrometry, and shown to be active in field tests. The seasonal flight pattern was determined for P. georgiana as well as for three other species, P. anxia (both northern and southern genitalic forms), P. gracilis, and P. postrema. The latter three species were captured in traps baited with l-isoleucine methyl este

    Relative toxicity and residual activity of insecticides used in blueberry pest management: mortality of natural enemies

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    ABSTRACT A series of bioassays were conducted to determine the relative toxicities and residual activities of insecticides labeled for use in blueberry (Vaccinium corymbosum L.) on natural enemies, to identify products with low toxicity or short duration effects on biological control agents. In total, 14 insecticides were evaluated using treated petri dishes and four commercially available natural enemies (Aphidius colemani Viereck, Orius insidiosus [Say], Chrysoperla rufilabris [Burmeister], and Hippodamia convergens [Gué rin-Mené ville]). Dishes were aged under greenhouse conditions for 0, 3, 7, or 14 d before introducing insects to test residual activity. Acute effects (combined mortality and knockdown) varied by insecticide, residue age, and natural enemy species. Broad-spectrum insecticides caused high mortality to all biocontrol agents, whereas products approved for use in organic agriculture had little effect. The reduced-risk insecticide acetamiprid consistently caused signiÞcant acute effects, even after aging for 14 d. Methoxyfenozide, novaluron, and chlorantraniliprole, which also are classiÞed as reduced-risk insecticides, had low toxicity, and along with the organic products could be compatible with biological control. This study provides information to guide blueberry growers in their selection of insecticides. Further research will be needed to determine whether adoption of a pest management program based on the use of more selective insecticides will result in higher levels of biological control in blueberry

    Spermatogenesis and sertoli cell activity in mice lacking Sertoli cell receptors for follicle stimulating hormone and androgen

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    Spermatogenesis in the adult male depends on the action of FSH and androgen. Ablation of either hormone has deleterious effects on Sertoli cell function and the progression of germ cells through spermatogenesis. In this study we generated mice lacking both FSH receptors (FSHRKO) and androgen receptors on the Sertoli cell (SCARKO) to examine how FSH and androgen combine to regulate Sertoli cell function and spermatogenesis. Sertoli cell number in FSHRKO-SCARKO mice was reduced by about 50% but was not significantly different from FSHRKO mice. In contrast, total germ cell number in FSHRKO-SCARKO mice was reduced to 2% of control mice (and 20% of SCARKO mice) due to a failure to progress beyond early meiosis. Measurement of Sertoli cell-specific transcript levels showed that about a third were independent of hormonal action on the Sertoli cell, whereas others were predominantly androgen dependent or showed redundant control by FSH and androgen. Results show that FSH and androgen act through redundant, additive, and synergistic regulation of spermatogenesis and Sertoli cell activity. In addition, the Sertoli cell retains a significant capacity for activity, which is independent of direct hormonal regulation
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