Drought is one of the most significant factors limiting tree growth. Trees in the genus Populus are particularly noted for their drought sensitivity; therefore, understanding the mechanisms by which these economically and ecologically important forest trees respond to drought is of paramount importance. The ability of Populus trees to contend with drought is dependent on the responsiveness of t...

Accurate quantification of gluconeogenic flux following alcohol ingestion in overnight-fasted humans has yet to be reported. [2-13C1]glycerol, [U-13C6]glucose, [1-2H1]galactose, and acetaminophen were infused in normal men before and after the consumption of 48 g alcohol or a placebo to quantify gluconeogenesis, glycogenolysis, hepatic glucose production, and intrahepatic gluconeogenic precurso...

Hexabromocyclododecane (HBCD) is an additive flame retardant used primarily in polystyrene foams. HBCD is a persistent contaminant that has been detected in abiotic and biotic matrices, including wild avian species. The toxicological implications of exposure are not well characterized. We recently identified molecular end points responsive to HBCD exposure in chicken embryonic hepatocytes (CEHs...

—The ecology and behavior of non-territorial owls are basically unknown. I studied the integration of young Great Horned Owls (Bubo virginianus) into the territorial breeding population from 19881993 in the southwestern Yukon, Canada, during a peak and decline of the population cycle of snowshoe hares (Lepus americanus). Fiftyfive fledglings were equipped with radio-transmitters that allowed we...

The original theory of Sampling with Partial Replacement (SPR) is modified to incorporate growth model projections of the unmatched plot data on the initial measurement. The Modified Sampling with Partial Replacement (MSPR) theory is illustrated by estimating growth and current volume using simulated plot data. In addition to the assumptions required by SPR, MSPR requires that the growth projec...

The specificities of transverse polarization with respect to helicity of ultrarelativistic fermions are pointed out. For massless fermions, a covariant transversity four-vector is defined, up to a kind of gauge transformation. The tranversity distribution of quarks in a nucleon is defined. Its possible connection to the magnetic or electric dipole moment of the baryon is conjectured. Consequenc...

Between 1992 and 2003, the global area under preservation has increased 52.8%, such that the terrestrial proportion of the globe now protected is 11.5% (Chape et al. 2003). Since some countries protect more forest than others, we wish to explain this variation using a reduced-form model capable of suggesting whether the amount of forest a country preserves is related to economic and ecological ...

In this paper, a phase eld system of Penrose Fife type with non conserved order parameter is considered. A class of time discrete schemes for an initial boundary value problem for this phase eld system is presented. In three space dimensions, convergence is proved and an error estimate is derived. For one scheme, this error estimate is linear with respect to the time step size. 1 Introduction I...

Atmospheric dusts are an important part of the global climate system, and play an important role in the marine and terrestrial biogeochemical cycles of major and trace nutrient elements. A peat bog record of atmospheric deposition shows considerable variation in dust deposition during the past 15 k.y., with abrupt changes in fl uxes at 12, 9.2, 8.4, 7.2, and 6 cal. kyr B.P. Using Nd isotopes an...

I discuss methods to identify the presence of dicrete symmetries in the two-Higgsdoublet model by observing the masses and the cubic and quartic interactions of the scalars. The symmetries considered are a Z2 symmetry under which φ2 → −φ2, and a CP symmetry which enforces real coupling constants in the Higgs potential. Those symmetries are spontaneously broken, and the Z2 symmetry may also be s...