Massive amounts of anthropogenic radionuclides were released from the nuclear reactors located in Fukushima (northeastern Japan) between 12 and 16 March 2011 following the earthquake and tsunami. Ground level air radioactivity was monitored around the globe immediately after the Fukushima accident. This global effort provided a unique opportunity to trace the surface air mass movement at differ...

A prominent feature of recent climatic change is the strong Arctic surface warming that is contemporaneous with broad cooling over much of Antarctica and the Southern Ocean. Longer global surface temperature observations suggest that this contrasting pole-to-pole change could be a manifestation of a multi-decadal interhemispheric or bipolar seesaw pattern, which is well correlated with the Nort...

The 11-level GFDL global chemical transport model has been used to assess the impact of stratospheric NOx production on tropospheric reactive nitrogen (N0 y) concentrations. A temporally varying source function was constructed using specified two-dimensional, monthly-average 03 , N 20, temperature and surface pressure data generated by the GFDL 'SKYHI' model. The calculated yearly NO y producti...

Background: The arachnoid granulations (AGs) are herniations of the arachnoid membrane into the dural venous sinuses on the surface of the brain. Previous morphological studies of AGs have been limited in scope and only one has mentioned surface area measurements. The purpose of this study was to investigate the topographic distribution of AGs on the superior surface of the cerebral cortex. Met...

Frettingwear between a hemisphere and a flat plate is investigated experimentally and the effect of laser polishing is studied. The energy dissipated between the hemisphere and the flat plate is determined as eceived in revised form 23 April 2010 ccepted 28 April 2010 vailable online 13 May 2010 eywords: retting a function of operating conditions such as frequency and normal load and material p...

[1] Reconstructions of Northern Hemisphere near-surface temperatures from climate ‘proxy’ data such as tree rings, ice cores, and corals, suggest that late 20th century Northern Hemisphere mean warmth is anomalous in the context of the past several centuries and likely at least the past two millennia. Though substantial uncertainties in the paleoclimate reconstructions exist, these findings add...