2,112 research outputs found

    What is the molecular pathology that underlies hippocampal memory decline?

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    The influence of growth stage and application site on movement and effect of glyphosate in Cirsium arvense (L.) Scop. : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Plant Science at Massey University

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    Glyphosate was applied at different rates to the upper parts of Cirsium arvense plants at various growth stages in a glasshouse experiment. Measurements and observations were made of the plants over a period of several months following treatment. In other experiments, glyphosate was applied to different parts of plants and to either side of leaves to determine the importance of herbicide placement on its subsequent effectiveness. Complete death of plants, as signified by decomposition of the roots, generally occurred only where the maximum dose (100 mg ai/plant) was applied, and occurred consistently only for those plants treated at the post-flowering growth stage. However, plants treated on the lower parts of stems died in some cases after application of 25 mg. The symptoms and damage resulting from glyphosate action are described and discussed. Extensive translocation of glyphosate appeared to occur, both symplastically and apoplastically, with greater translocation to the roots and untreated daughter stems occurring from treated tissue situated low on the stem. Stem tissue seemed as efficient at absorbing glyphosate as leaves, and likewise no difference in absorption rates by upper compared with lower leaf surfaces was detected. Complete control of plants occurred only if all stems simultaneously wilted approximately 1 month after treatment, apparently due to disruption of the roots. Plants varied considerably in response to treatment and no relationship could be established between degree of effect and plant size, plant sex or relative humidity at the time of treatment. The results are discussed in relation to ropewick application of glyphosate to C. arvense plants

    The Impediment of Impotency and the Condition of Male Impotence: A Canonical-Medical Study: Medical Considerations

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    To present the problems involved in the matter of male impotence as related to the validity of marriage, the canonical considerations, as prepared by Rev. Paul v. Harrington, J.C.L., were published in the August and November 1958 issues of The Linacre Quarterly. The Medical study as set forth by Dr. Charles J. E. Kickham appears in this issue. Dr. Kickham is a graduate of Holy Cross College and Harvard medical School. He is Associate Professor of Urology at Tufts medical School and is Surgeon-in-Chief, Department of Urology, St. Elizabeth\u27s Hospital, Brighton; Carney Hospital, Boston, and Pondville Cancer Hospital at Norfolk, Mass. He is a diplomate of the American Board of Urology

    The Impediment of Impotency and the Condition of Male Impotence: A Canonical-Medical Study: Part II, Medical Considerations

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    To present the problems involved in the matter of male impotence as related to the validity of marriage, the canonical considerations, as prepared by Rev. Paul v. Harrington, J.C.L., were published in the August and November 1958 issues of The Linacre Quarterly. The Medical study as set forth by Dr. Charles J. E. Kickham appears in this issue. Dr. Kickham is a graduate of Holy Cross College and Harvard medical School. He is Associate Professor of Urology at Tufts medical School and is Surgeon-in-Chief, Department of Urology, St. Elizabeth\u27s Hospital, Brighton; Carney Hospital, Boston, and Pondville Cancer Hospital at Norfolk, Mass. He is a diplomate of the American Board of Urology

    Aspect of the pathology of protein metabolism

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    An Introduction to the p-adic Numbers

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    One way to construct the real numbers involves creating equivalence classes of Cauchy sequences of rational numbers with respect to the usual absolute value. But, with a different absolute value we construct a completely different set of numbers called the p-adic numbers, and denoted Qp

    Ion-Beam Analysis of Airborne Pollution

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    A research program in ion-beam analysis (IBA) of atmospheric aerosols is being developed to study pollution in the Capital District and Adirondack Mountains of New York. The IBA techniques applied in this project include proton induced X-ray emission (PIXE), proton induced gamma-ray emission (PIGE), Rutherford backscattering (RBS), and proton elastic scattering anal-ysis (PESA). These methods are well suited for studying air pollution because they are quick, non-destructive, require little to no sample preparation, and capable of investigating microscopic samples. While PIXE spectrometry is used to analyze most elements from silicon to uranium, the remaining techniques an-alyze some of the lighter elements to complement PIXE in the study of aerosols. The airborne particulate matter is collected using nine-stage cascade impactors that separate the particles according to size and the samples are bombarded with proton beams from the Union College 1.1-MV Pelletron Accelerator. The reaction products are measured with Si Drift X-ray, Ge gamma-ray, and Si sur-face barrier charged particle detectors. Here, we report on the progress we have made on the PIGE, RBS, and PESA analysis of aerosol samples

    Tau-aggregation inhibitor therapy for Alzheimer's disease

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    Article Accepted Date: 9 December 2013 Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.Peer reviewedPublisher PD
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