Periodicities of Quasar Redshifts in Large Area Surveys

We test the periodicity of quasar redshifts in the 2dF and SDSS surveys. In the overall surveys redshift peaks are already apparent in the brighter quasars. But by analyzing sample areas in detail it is shown that the redshifts fit very closely the long standing Karlssson formula and strongly suggest the existence of preferred values in the distribution of quasar redshifts. We introduce a powerful new test for groups of quasars of differing redshifts which not only demonstrates the periodicity of the redshifts, but also their physical association with a parent galaxy. Further such analyses of the large area surveys should produce more information on the properties of the periodicity.Comment: 23 pages, 14 figure

Medical Library Association Historical Marker to be Installed in Philadelphia

During 2015, its 117th anniversary year, MLA will celebrate a novel and permanent way of informing both residents and visitors to Philadelphia about the association. Several months ago, the Pennsylvania Historical and Museum Commission voted to approve the nomination of an official State Historical Marker to commemorate MLA\u27s founding in Philadelphia in 1898. The text of the marker will not be revealed until the marker\u27s dedication ceremony in keeping with the commission\u27s guidelines

Theoretical Parametric Study of the Relative Advantages of Winglets and Wing-Tip Extensions

For identical increases in bending moment, a winglet provides a greater gain in induced efficiency than tip extension. Winglet toe angle allows design trades between efficiency and root moment. A winglet shows the greatest benefit when the wing loads are heavy near the tip. Washout diminishes the benefit of either tip modification, and the gain in induced efficiency becomes a function of lift coefficient; thus, heavy wing loadings obtain the greatest benefit from a winglet, and low-speed performance is enhanced even more than cruise performance. Both induced efficiency and bending moment increase with winglet length and outward cant. The benefit of a winglet relative to a tip extension is greatest for a nearly vertical winglet. Root bending moment is proportional to the minimum weight of bending material required in the wing; thus, it is a valid index of the impact of tip modifications on a new wing design

Unusual damage to potatoes by the two-spotted spider mite, Tetranychus telarius (L.), in the Lower Fraser Valley

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Soil insecticides for control of the tuber flea beetle, Epitrix Tuberis Gent., in the Lower Fraser Valley of British Columbia

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A Cluster of High Redshift Quasars with Apparent Diameter 2.3 Degrees

During analysis of the relation of quasars to galaxies in the 2dF deep field a concentration of quasars was noted. Most striking was the closeness in redshift of 14 quasars about the mean redshift z = 2.149 with a range of $\pm 0.018$. The cluster in spite of its high redshift subtends an area of diameter more than 2.3 degrees on the sky. At conventional redshift distance its diameter would be 181 mega parsecs and the back should be receding with about $10,000 km/s$ with respect to the front.Comment: 7 pages, 3 Figure