Time-resolved product distributions of four softening coals pyrolyzed in an electrically heated grid are presented. The data collected over a broad range of temperatures and pressures satisfy a mass balance despite the small sample size (ca. 15 mg). Gaseous product compositions and the weights of tar evolved were determined during heat-up at 1000 K/s and for extended isothermal periods (0-30 s) at various temperatures (450-950 "C). The pressures used ranged from 0.01 to 25 atm of either helium or hydrogen. Quenching with a liquid-nitrogen-cooled helium stream allowed precise time resolution of the pyrolysis reaction over the entire operating range without loss of product.
Future CPU directions are increasingly emphasizing parallel compute platforms which are critically dependent upon upon greater core to core communication as well as generally stressing the overall memory and storage interconnect hierarchy to a much greater degree than extrapolations of past platform needs. Performance is critically dependent upon memory bandwidth and latency but must be moderated with power and cost considerations. 3D stacking of CPU's and memory (i.e. a last level cache) is a potential solution that provides the necessary bandwidth within a reasonable power envelope.
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