362 research outputs found

    Comparison of Absorption Occuring in Corn Stalk Tissue and in Prepared Biocolloids

    Get PDF
    Growth, an important function of the plant, is characterized by being possible under a wide range of temperature, moisture, available plant food, and other limiting factors. It is a hydration of the colloidal material (protoplasm) of the plant to which, later in the life of the plant, matter is added. This added matter, of course, increases the dry weight. Protoplasm has been found to adhere so closely in its actions to the laws of artificially constructed biocolloids that many attempts are being made to construct a biocolloid whose behavior agrees with the observed behavior of protoplasm and in that way to determine more definitely its detailed structure and composition. The present study is an attempt to set forth the rate of hydration in corn stalk tissues and in artificially prepared biocolloids

    A Study of the Pollen and Pistils of Apples in Relation to the Germination of the Pollen

    Get PDF
    The failure of a fruit tree to develop a normal amount of fruit may be due to a number of causes as stated by Kraus in volume VI of the Journal of Heredity. However, unless a plant develops fruit parthenocarpically, the development of fruit depends primarily upon how the pollen and pistil function relative to each other. As Kraus points out, fertilization by no means insures the development of a fruit, for very commonly the fruit does not develop despite the fact that normal fertilization occurred, but, on the other hand, in the absence of fertilization, fruit seldom develops among apples

    Ultrastructural Studies On Stomata Development In Internodes Of Avena Sativa

    Full text link
    Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141606/1/ajb209789.pd

    A Balancing Act: Reading \u27Amoris Laetitia\u27

    Get PDF
    Five religious scholars provide commentary on Amoris Laetitia (The Joy of Love), Pope Francis\u27s 2016 apostolic exhortation on love in the family

    Educational Brochures Influence Beliefs and Knowledge Regarding Exercise during Pregnancy: A Pilot Study

    Get PDF
    International Journal of Exercise Science 12(3): 581-589, 2019. Women who are pregnant report receiving little or no advice about physical activity during pregnancy from their obstetric provider. The purpose of this study was to assess the effectiveness of an evidence-based educational brochure on both immediate and two-week retention of knowledge about exercise during pregnancy. Thirty-two women of childbearing age (age: 25.0 ± 4.0 years, body mass index: 29.5 ± 6.5 kg/m2, 93.7% Caucasian, 83.4% had at least some college) completed a survey before exposure to an evidence-based educational brochure regarding exercise during pregnancy. Post surveys were taken immediately after viewing the educational brochure and again 2-weeks later. After exposure to educational brochures, survey scores on both surveys were significantly higher immediately-post and two-weeks post compared to baseline survey scores (Survey 1 (assessing beliefs) – pre: 79.2 ± 8.9%, post: 92.6 ± 7.4%, 2-weeks post: 92.0 ± 6.5%, p \u3c 0.001; Survey 2 (assessing knowledge) – pre: 65.3 ± 16.4%, post: 81.3 ± 14.9%, 2-weeks post: 78.8 ± 12.4%, p \u3c 0.001). No significant differences detected between immediate post and 2-weeks post for either Survey 1 (p = 0.72) or Survey 2 (p = 0.52); suggesting the information was retained. An evidence-based educational brochure is effective for improving and retaining information 2-weeks later regarding exercise during pregnancy. However, replication studies in more diverse populations are needed to confirm the results of this pilot study. The long-term goal for this line of research is to urge health care providers to consider providing patients with educational information in order to improve knowledge and patient-provider communication on this topic

    Results from a Search for Light-Mass Dark Matter with a P-type Point Contact Germanium Detector

    Get PDF
    We report on several features present in the energy spectrum from an ultra low-noise germanium detector operated at 2,100 m.w.e. By implementing a new technique able to reject surface events, a number of cosmogenic peaks can be observed for the first time. We discuss several possible causes for an irreducible excess of bulk-like events below 3 keVee, including a dark matter candidate common to the DAMA/LIBRA annual modulation effect, the hint of a signal in CDMS, and phenomenological predictions. Improved constraints are placed on a cosmological origin for the DAMA/LIBRA effect.Comment: 4 pages, 4 figures. v2: submitted version. Minimal changes in wording, one reference adde

    Experimental constraints on a dark matter origin for the DAMA annual modulation effect

    Get PDF
    A claim for evidence of dark matter interactions in the DAMA experiment has been recently reinforced. We employ a new type of germanium detector to conclusively rule out a standard isothermal galactic halo of Weakly Interacting Massive Particles (WIMPs) as the explanation for the annual modulation effect leading to the claim. Bounds are similarly imposed on a suggestion that dark pseudoscalars mightlead to the effect. We describe the sensitivity to light dark matter particles achievable with our device, in particular to Next-to-Minimal Supersymmetric Model candidates.Comment: v4: introduces recent results from arXiv:0807.3279 and arXiv:0807.2926. Sensitivity to pseudoscalars is revised in light of the first. Discussion on the subject adde
    • …
    corecore