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  • Historical Sources of Science-as-Social-Practice: Michael Polanyi's Berlin

    Creator:
    Nye, Mary Jo
    Abstract:
    Historians and sociologists of science often identify the efflorescence of social stud ies of science with the work of postwar American intellectuals such as Robert K. Merton and Thomas S. Kuhn. They often also refer to the views of Michael Polanyi (1891-1976) on the roles of tacit knowledge, apprenticeship, social...
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    . Comments to Mannheim, quoted in Endre J. Nagy, "After brotherhood's golden age: Karl and Michael Polanyi

  • Abandoning Sverdrup’s critical depth hypothesis on phytoplankton blooms

    Creator:
    Behrenfeld, Michael J.
    Abstract:
    The Critical Depth Hypothesis formalized by Sverdrup in 1953 posits that vernal phytoplankton blooms occur when surface mixing shoals to a depth shallower than a critical depth horizon defining the point where phytoplankton growth exceeds losses. This hypothesis has since served as a cornerstone in plankton ecology and reflects the...
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    phytoplankton blooms MICHAEL J. BEHRENFELD1 Department of Botany and Plant Pathology, Cordley Hall 2082

  • Glucose Oxidase: A Food Protective Mechanism in Social Hymenoptera

    Creator:
    Burgett, D. Michael
    Abstract:
    The previously suggested protection from microbial attack of ripening nectar by the addition of glucose oxidase by the common honey bee, Apis mellifera L., has been found to occur in 9 other eusocial Hymenoptera from 3 superfamilies. The antibacterial effect results from the accumulation of hydrogen peroxide produced by the...
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    Hymenoptera' D. MICHAEL BURGETT2 Department of Entomology, Cornell University, Ithaca, NY 14850 ABSTRACT The

  • Pyrrolizidine Alkaloids: Their Occurrence in Honey from Tansy Ragwort (Senecio jacobaea L.)

    Creator:
    Burgett, D. Michael
    Abstract:
    The hepatotoxic alkaloids known to occur in tansy ragwort (Senecio jacobaea L.) are also present in honey produced from the nectar of this species. These alkaloids, which include senecionine, seneciphvlline, jacoline, jaconine, jacobine, and jacozine, are potentially carcinogenic, mutagenic and teratogenic and may pose health hazards to the human consumer.
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    . Oregon State University (1973). p 65]. L. B. Bull. C. C. J. Culvenor, A. T. Dick, in Th Pyrrolizidine

  • A Faculty Led Response to the Crisis in Scholarly Communications

    Creator:
    Boock, Michael
    Abstract:
    Oregon State University’s recent response to the crisis in scholarly communications recognizes that teaching faculty must be involved in communicating an appropriate response to their faculty colleagues. As authors, editors, and peer reviewers, direct faculty action can encourage publishers to lower costs and can enhance the availability of research. The...
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    Communications Michael H. Boock, Head of Technical Services Oregon State University Libraries

  • Number of Adult Honey Bees (Hymenoptera: Apidae) Occupying a Comb: A Standard for Estimating Colony Populations

    Creator:
    Burgett, D. Michael
    Abstract:
    A quantification of the number of adult worker Apis meltifera L. found on combs of standard sizes at full holding capacity is reported. Estimating the holding capacity of combs can assist in evaluating honey-bee colonies for pollination capabilities and also for honey-production potentials
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    Comb: A Standard for Estimating Colony Populations MICHAEL BURGETT AND INTAWAT BURIKAM Department of

  • Validation of Vector Magnitude Datasets: Effects of Random Component Errors

    Creator:
    Freilich, Michael H.
    Abstract:
    A statistically consistent and physically realistic approach for validating vector magnitude measurements is developed, based on a model for random measurement noise that explicitly satisfies a nonnegativity constraint for all “noisy” vector magnitude measurements. Numerical and analytic approximations are used to quantify the nonlinear functional dependence of sample conditional means...
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    Validation of Vector Magnitude Datasets: Effects of Random Component Errors MICHAEL H. FREILICH College of

  • Cesium-134 and Cesium-137 in Honey Bees and Cheese Samples Collected in the U.S. After the Chernobyl Accident

    Creator:
    Burgett, D. Michael
    Abstract:
    As a result of the Chernobyl accident on April 25, 1986. possible radioactive contamination of honey bees and cheese sampled in several areas of the United States were measured. Of bees collected in May and June of 1986 in both Oregon and New York, only those from Oregon showed detectable...
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    . Griffith', Roger A. Morse2, Robert R. Zall3, D. Michael Burgett4, Floyd W. Bodyfelt5 and Donald J. Lisk6

  • Dormancy and Germination Pre-treatments in Willamette Valley Native Plants

    Creator:
    Russell, Michael
    Abstract:
    Seeds from 30 species of grasses and forbs native to Pacific Northwest prairies were tested for physical and physiological dormancy. The physical dormancy was determined by mechanically and chemically scarifying seeds. Physiological dormancy was evaluated with cold stratification before germination. Experiments were analyzed individually with ANOVA analysis, and by seed...
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    Northwest Scientific Association. All rights reserved. Michael Russell1, Department of Horticulture, 4017

  • Primary Contextualization of Science Learning Through Immersion in Content-Rich Settings

    Creator:
    Giamellaro, Michael
    Abstract:
    This paper reports on a study of primary contextualization processes during science immersion trips and the resultant student learning. Four High School Ecology classes (n=67) and teachers participated. Through a pre/post assessment of science concept knowledge (Pathfinder Network Modeling) and follow-up interviews with students, it was determined that (1) significant...
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