15. Dillon JC, Weyman AE, Feigenbaum H, Eggleton RC, Johnston K: Cross-sectional echocardiographic examination of the interatrial septum. Circulation 55: 115, 1977 16. Lieppe W, Scallion R, Behar VS, Kisslo JA: Two-dimensional echocardiographic findings in atrial septal defect. Circulation 56: 447, 1977 17. Hagler DJ, Tajik AJ, Seward JB, Mair DD, Ritter DG: Realtime wide-angle sector echocardi...

Let P be a set of n points in the plane, not all on a line. We show that if n is large then there are at least n/2 ordinary lines, that is to say lines passing through exactly two points of P . This confirms, for large n, a conjecture of Dirac and Motzkin. In fact we describe the exact extremisers for this problem, as well as all sets having fewer than n−C ordinary lines for some absolute const...

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The measurement and control of soil moisture are the key technologies of precision agriculture. In order to real-time detect soil moisture content faster and more accurately, a portable soil moisture sensor based on NIR spectroscopy was developed. With the sixty soil samples collected from a winter jujube orchard, a linear regression model was established. The determination coefficients of the ...

Dallot, S., Gottwald, T., Labonne, G., and Quiot, J.-B. 2004. Factors affecting the spread of Plum pox virus strain M in peach orchards subjected to roguing in France. Phytopathology 94:1390-1398. We evaluated the impact of roguing on the spread and persistence of the aggressive Plum pox virus strain M (PPV-M) in 19 peach orchard blocks in Southern France. During a 7to 10-year period, orchards ...

an orchard experiment was conducted at gonabad pistachio production station., khorasan, iran (1998-2003). in some pistachio trees, especially in cv. owhadi, leaf marginal chlorosis was already observed. then, gradual drying of leaves extended to the leaves' centers up to midsummer. with respect to salinity problems, some researches were done. two orchards of pistachio known as no.6 and no....