This study investigates the changes of the North Atlantic subtropical high (NASH) and its impact on summer precipitation over the southeastern (SE) United States using the 850-hPa geopotential height field in the National Centers for Environmental Prediction (NCEP) reanalysis, the 40-yr European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-40), long-term rainfall data, and...

Polyamines are polycationic molecules essential for cell growth and differentiation. Recent work has focused on cell polyamine-transport systems as a way to regulate intracellular polyamine levels. In this study, we demonstrate the presence of two different active transporters for putrescine and spermidine in a rat tumoral cell line (AR4-2J). The first has a Km of 3.1 microM and a Vmax of 3.7 p...

1 The transport of the Antarctic Circumpolar Current (ACC) varies strongly across the cou2 pled GCMs (general circulation models) used for the IPCC AR4. This note shows that a 3 large fraction of this across-model variance can be explained by relating it to the param4 eterization of eddy-induced transports. In the majority of models this parameterization is 5 based on the study by Gent and McWi...

Since the beginning of the industrial era, the atmosphere content in greenhouse gases has rapidly increased. In its 4th assessment report (AR4), the Intergovernmental Panel on Climate Change (IPCC, 2007) points out the impact of human’s activities and its responsibility for a large part of the changes recently observed in the Earth's climate: increase in global temperature, sea level rise, melt...

Abstraet. Photoionization cross sections, oscillator strengths and energy levels of the silicon-like ions. Sio, S2+, Ar4 and Ca6+ are calculated in the close coupling approximation using the R-matrix method. A large number of bound states with n S IO have been considered and oscillator strengths fortransitions among all thesestates and photoionization cross sections of all the bound stater are ...

Clusterin is a secretory glycoprotein that is highly induced in several tissues in response to injury. The pathophysiologic significance of clusterin in the pancreas remains largely unknown. The aim of this work was to examine whether clusterin is expressed in spontaneous chronic pancreatitis in the WBN/Kob rat and to investigate the relationship between clusterin and apoptosis in pancreatic ac...

Multi-model ensembles of climate predictions constructed by running several global climate models for a common set of experiments are available for impact assessment of climate change. Multi-model ensembles emphasize the uncertainty in climate predictions resulting from structural differences in the global climate models as well as uncertainty due to variations in initial conditions or model pa...