Recursos de colección

The KnowledgeBank at OSU (79.989 recursos)

Knowledge Bank contains collections of presentations, publications and reports related to Ohio State University.

Ohio Journal of Science: Volume 112, Issue 2 (2013)

Mostrando recursos 1 - 12 de 12

  1. Reiteration of Open Access plan and policies for The Ohio Journal of Science

  2. Ohio Patent Awards application for 2015

  3. Recent Ohio Patent Awards (2011-2012)

  4. The geologic interpretation of scenic features in Ohio [Classic Reprint]

    Carman, J. Ernest

  5. Back Matter

  6. Front Matter

  7. Intramuscular Fat and Conception in Cows (Bos taurus)

    Boyles, Stephen L.
    Real-time ultrasound intramuscular fat (IMF), back fat (BF), and rump fat (RF) measurements were obtained at or near breeding and compared to conception status in beef cows (Bos taurus). The objective of this experiment was to determine if real-time ultrasound IMF measurements are correlated with conception in beef cows. The study included 207 cows that were being used in an estrus synchronization program. Ultrasound measurements were collected at the first timed artificial insemination session. Collection of IMF involved two images: the upper quip (UQ) proximal to the skin and the lower quip (LQ) deeper in the muscle. RF was correlated...

  8. Length-weight relationships of the Mimic shiner Notropis volucellus (Cope 1865) in the Western Basin of Lake Erie

    Middleton, Sarah; Perello, Melanie; Simon, Thomas P.
    Gender relationships between total and standard length (mm) were compared to weight (mg) in the mimic shiner, Notropis volucellus for the western Lake Erie basin in the vicinity of the Bass Islands. Length and weight relationship (n=300), length-frequency distribution, and sex ratios (n=884) from a single date from Gibraltar Island in June 2012 were analyzed for coastal shoreline and tributaries. A strong positive correlation was found between length and weight for both males and females. In females, a significant positive correlation exists between standard length (SL) and body weight (F=671.5, d.f.=135) and between total length (TL) and body weight (F=681.4,...

  9. Comparing Allelopathic Effects of Root and Leaf Extracts of Invasive Alliaria petiolata, Lonicera maackii and Ranunculus ficaria on Germination of Three Native Woodland Plants

    Cipollini, Kendra A.; Flint, Wesley N.
    Invasive plant species can exhibit allelopathic effects on native plant species. The strength of this allelopathic effect can vary with invasive species, with target species and with type of plant tissue extract. The purpose of this study was to determine the direct effects of extracts from roots or leaves of three Midwestern US invasive plants (Alliaria petiolata, Lonicera maackii and Ranunculus ficaria) on the germination success of three native target species (Anemone virginiana, Blephilia hirsuta and Elymus hystrix) in a fully factorial experiment. Leaf extract treatments overall showed more germination inhibition compared to root extract treatments. As concentration increased, effects...

  10. The influence of host plant species on the frequency of defensive behaviors exhibited by the Oleander aphid, Aphis nerii, in response to the parasitoid, Lysiphlebus testaceipes

    Colvin, Sarah M.; Yeargan, Kenneth V.
    The oleander aphid, Aphis nerii Boyer de Fonscolombe, feeds on milkweeds in the Apocynaceae family. Characteristics including trichome density and leaf toughness vary among milkweed species. The hypothesis that host plant characteristics influence the frequency of defensive behaviors exhibited by this aphid against the parasitoid, Lysiphlebus testaceipes (Cresson), was tested in a laboratory experiment. Interactions between oleander aphids and L. testaceipes were investigated on four milkweed species with different physical characteristics. Aphids responded to parasitoid presence with spinning, kicking, bucking, a coordinated defense, and the excretion of cornicle wax. When excreted, cornicle wax reduced parasitoid foraging time regardless of host...

  11. Essential science knowledge for non-science majors: an electronic survey of The Ohio Academy of Science members and associates

    Gahbauer, Mary D.
    As science and technology increasingly characterize our civilization, there is a growing need for the general population to achieve "scientific literacy." The meaning of this attractive but ill-defined term varies within political, educational, and social contexts. This paper reports a study of what scientific literacy is appropriate in the specific context of undergraduate general science education; for most students this is their last opportunity for formal learning in science. Members and associates of The Ohio Academy of Science (OAS) were surveyed by email to gain their opinions on (1) which topics of science (other than discipline specific content), and (2)...

  12. Research overview: Holocene development of Lake Erie

    Herdendorf, Charles E.
    This paper reviews and summarizes research on the Holocene evolutionary history of Lake Erie. New bathymetric data published in 1998 and more recently by the National Geophysical Data Center reveal lake-floor features indicative of former, now inundated, shorelines. These data combined with other recent research, permit a detailed reconstruction of Lake Erie's complex history since the Wisconsinan ice sheet retreated some 12,000 years ago, ending a series of glacial lakes and initiating a series of post-glacial lake stages. The lakes that have occupied the Lake Erie Basin are grouped into three phases. The oldest phase, 14,400 to 12,000 years ago,...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.