The stable oxygen isotope ratio (6 0) of treering cellulose is jointly determined by the 6 0 of xylem water, the 8' 8 0 of atmospheric water vapor, the humidity of the atmosphere and perhaps by species-specific differences in leaf structure and function. Atmospheric humidity and the 6 0 of water vapor vary seasonally and annually, but if the canopy atmosphere is well mixed, atmospheric characte...

Janet R. Manning, Catherine N. Withers, Bryana Levitan, Jeffrey D. Smith, Douglas 4 A. Andres, Jonathan Satin 5 6 Department of Physiology, Department of Biochemistry, Gill Heart Institute, University 7 of Kentucky, Lexington KY 8 9 10 11 12 13 Short title: Rad-deletion improves heart function 14 15 16 17 18 19 20 Address for correspondence: 21 Jonathan Satin, PhD 22 Department of Physiology 23...

The curvature KT (w) of a contraction T in the Cowen-Douglas class B1(D) is bounded above by the curvature KS∗(w) of the backward shift operator. However, in general, an operator satisfying the curvature inequality need not be contractive. In this note, we characterize a slightly smaller class of contractions using a stronger form of the curvature inequality. Along the way, we find conditions o...

A common theme in the theory of demand aggregation is that market demand can acquire properties which are not always individually present among the agents who make up that market, a phenomenon we call heterosis in this paper. This paper focusses on the well known result that with a suitable distribution of demand behavior (arising perhaps from the underlying distribution of preferences), market...