BACKGROUND Clostridium thermocellum is a promising consolidated bioprocessing candidate organism capable of directly converting lignocellulosic biomass to ethanol. Current ethanol yields, productivities, and growth inhibitions are industrial deployment impediments for commodity fuel production by this bacterium. Redox imbalance under certain conditions and in engineered strains may contribute t...

We present first results from an HST/ACS imaging survey of stars and star clusters in five nearby spiral galaxies. This contribution concentrates on NGC 1313, a highly distorted late-type barred spiral. We compare the field star and cluster formation histories in our three ACS pointings for this galaxy. In one pointing, both the cluster and field star age distributions show clear evidence for a...

Lithography-free Nanoscale PatternedGrowth of GaAs on Si(001)with Sub-100-nm Silica Nanoparticles by Molecular Beam Epitaxy S. C. Lee,* L. R. Dawson, S. H. Huang, and S. R. J. Brueck Center for High Technology Materials and Department of Electrical and Computer Engineering, University of New Mexico, 1313 Goddard SE, Albuquerque, New Mexico 87106, United States Department of Earth and Planetary ...

The modeling of the heat transfer performance of supercritical carbon dioxide with a small amount of entrained PAG-type lubricating oil is presented in this paper. Due to the complexity of the heat transfer mechanism, including the complexity of the changes in the thermophysical properties, changes in the solubility of CO2 in oil, and the flow pattern at different temperatures and pressures, a ...

We describe a series of observations of NGC 1313 using the ROSAT HRI with a combined exposure time of 183.5 ksec. The observations span an interval between 1992 and 1998; the purpose of observations since 1994 was to monitor the X-ray flux of SN1978K, one of several luminous sources in the galaxy. No diffuse emission is detected in the galaxy to a level of ∼12×10 ergs s arcmin. A total of eight...

Two ultraluminous X-ray sources (ULXs) in the nearby Sb galaxy NGC 1313, named X-1 and X-2, were observed with Suzaku on 2005 September 15. During the observation for a net exposure of 28 ks (but over a gross time span of 90 ks), both objects varied in intensity by about 50 %. The 0.4–10 keV X-ray luminosity of X-1 and X-2 was measured as 2.5× 10 erg s and 5.8× 10 erg s, respectively, with the ...