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Model macroion solutions next to a charged wall show interface true overcharging, charge reversal and inversion, and layering. Macroion layering is present, even if the wall or the macroparticle are uncharged or if the wall and macroions are like-charged. An effective long-range attractive force between the adsorbed macroions is implied. The results are obtained through an integral equation the...

We give a deterministic polynomial-time algorithm which for any given average degree d and asymptotically almost all random graphs G in G(n,m = d2n ) outputs a cut of G whose ratio (in cardinality) with the maximum cut is at least 0.952. We remind the reader that it is known that unless P=NP, for no constant > 0 is there a Max-Cut approximation algorithm that for all inputs achieves an approxim...

This work assesses the prospects for high-speed alloptical wavelength conversion using the simple optical interaction with the gain in semiconductor optical amplifiers (SOA’s) via the interband carrier recombination. Operation and design guidelines for conversion speeds above 10 Gb/s are described and the various tradeoffs are discussed. Experiments at bit rates up to 40 Gb/s are presented for ...

In 1969, Pozefsky et al. (8) reported on the effects of systemic insulin infusion on forearm amino acid and glucose uptake. They noted that a large increase in insulin from 12 to 157 U/ml resulted in a significant lowering of forearm (muscle) “. . . alpha amino nitrogen release by 74% . . . declines in output were seen for leucine, isoleucine, tyrosine, phenylalanine, threonine, glycine . . .”....

Previous research has shown that multiple choice tests often improve memory retention. However, the presence of incorrect lures often attenuates this memory benefit. The current research examined the effects of "all of the above" (AOTA) options. When such options are correct, no incorrect lures are present. In the first three experiments, a correct AOTA option on an initial test led to a larger...

A new all-sky imaging Fabry-Perot spectrometer has been installed at Mawson station (6736 S, 6252 E), Antarctica. This instrument is capable of recording independent spectra from many tens of locations across the sky simultaneously. Useful operation began in March 2007, with spectra recorded on a total of 186 nights. Initial analysis has focused on the large-scale daily and average behavior of ...