The Maximal Rank of Elliptic Delsarte Surfaces

Shioda described in his article from 1986 a method to compute the Lefschetz number of a Delsarte surface. In one of his examples he uses this method to compute the rank of an elliptic curve over k(t). In this article we find all elliptic curves over k(t) for which his method is applicable. For each of these curves we also compute the Mordell-Weil rank

\u3cem\u3eLaunching through the Surf\u3c/em\u3e Traveling Exhibit Panel 10: Fiberglassing and Painting a Dory

Panel 10 documents the process of fiberglassing and painting (gelcoating) a new wooden dory. During the spring of 2012, project collaborator Tyrone Marshall photographed Pacific City glasser Jim Allen as he fiberglassed dory number 82, the Rehab.https://digitalcommons.linfield.edu/dory_exhibit/1009/thumbnail.jp

LHC-B Ring Imaging Cherenkov Detector

The progress towards the realisation of the LHC-B Ring Imaging Cherenkov detector is reported.Comment: 5 pages. 5 postscript figures + 1 postscript preprint logo + 1 LaTeX file + 1 style file. Also available at http://ppewww.ph.gla.ac.uk/preprints/97/14/ Invited talk given at Beauty'9

Enhancement of degradation of fallen apple leaves

Leaves from organic apple trees were dipped with different organic materials and leaves were placed on the orchard floor in autumn. Leaf area and the amount of ascospores of Venturia inaequalis were measured in spring. The objective of this research was to find alternatives for urea that simulate the decomposition of apple leaves and reduces the asco-spore production. In both years urea gave an increase of the leaf degradation and a significant reduction of the number of ascospores. The antagonist Coniothyrium minitans had no significant effect on the ascospore production in both years but decreased the leaf degradation. Beet pulp showed a significant reduction of the number of spores but reduced the leaf degradation rate. Applying extra earthworms increased the degradation

REPCO contribution to the development of products for apple scab control

Natural compounds were sprayed according the RimPro scab warning system from start of bud break until the mid of June. Scab incidence was measured on the leaves and the fruit. Phytotoxicitiy and russet-ing was assessed. The natural compounds were sprayed together with sulphur and were compared with the standard biological fungicides copper hy-droxide and sulphur alone. Compound E73 + sulphur was the most effective on fruit. Armicarb and Resis-tim both sprayed with sulphur were comparable in efficacy with Funguran-OH. In our study laminarin (GL 32) did not shown any effect on the control of scab on apple

Promotion of leaf degradation by earthworms under laboratory conditions

Organic materials were applied to leaves from organic apple trees. Then, leaves were fed to earthworms in a laboratory culture. The objective was to select materials which promote leaf degradation by earthworms and consequently reduce the inoculum pressure of apple scab in orchards. Used earthworms were fully grown and consequently no effect of the leaf treatments was found on earthworm weights. However, leaf consumption tended to be increased by addition of amino acids and beet pulp to leaves. For beet pulp, this was especially the case when the dose was increased from 1 to 5 % or when it was freshly applied

Vinasse veelbelovend nieuw wapen tegen schurft

Schurftschimmel Venturia inaequalis vraagt maar liefst 70 procent van het middelengebruik in de fruitteelt. ‘Telers hebben ermee leren leven’, weet PPO-onderzoeker Bart Heijne. Hij is nauw betrokken bij een proef met vinasse, het nieuwste wapen tegen de vermaledijde Angstgegner van fruittelers. ‘De proef moet uitwijzen hoe groot de effectiviteit van vinasse werkelijk is.

University libraries and public libraries: collaborate to provide access to information for all

University libraries all over the world have managed to acquire access to large databases of scientific information. And many have set up repositories as ‘green road open access’ to assure free access to their own published academic output. And in order to pave the way for ‘golden road open access’ in the longer term. How could these efforts also be profitable for public libraries? Many of them are targeting their services to new user groups. Like professionals in many disciplines, who would be very interested to be able to get access to academic information via the public library? And even the general public, being the traditional public library user, has a growing interest in academic information. University libraries could address access for a general public already during their negotiations with publishers. At the same time public libraries could profile themselves towards university libraries as a stepping stone to reach a broader audience and fulfil the demand in academia to create more social and economic value with their scientific results. When looking at technical university libraries the public library could be used as an easy entrance to get more people interested in technical sciences and as a means to attract more students. The public library will develop into a natural channel for these efforts when both types of library will learn to collaborate more