cutaneous malignancy is complex. Current models suggest, however, that ozone depletion may cause a more rapid increase in melanoma than in non-melanoma skin cancer.10 This is because short episodes of intense and burning ultraviolet exposure are linked to melanoma, whereas nonmelanoma skin cancer is associated with the lifetime build up of exposure to ultraviolet. To quantify changes in inciden...

Histidine-tRNA synthetase is one of the smallest bacterial aminoacyl-tRNA synthetases. It is less than one-half the size of the largest aminoacyl-tRNA synthetases. The entire nucleotide sequence of the Escherichia coli hisS locus was determined. The coding region is comprised of 424 codons, and the sequence was determined for 200 nucleotides on the 5'- and 3'-sides of the coding region. The tra...

1 Background This note proposes a formal explication of the notion of \actual cause" as in, for example, \Socrates drinking hemlock was the actual cause of Socrates death." The philosophical literature has been struggling with this notion at least since Mackie (1965) put forward his famous INUS condition and, as we shall outline shortly, no satisfactory solution has emerged from either the logi...

The dissimilatory adenosine-5'-phosphosulfate reductase is a key enzyme of the microbial sulfate reduction and sulfur oxidation processes. Because the alpha- and beta-subunit-encoding genes, aprBA, are highly conserved among sulfate-reducing and sulfur-oxidizing prokaryotes, they are most suitable for molecular profiling of the microbial community structure of the sulfur cycle in environment. I...

Many attempts, based on biochemical properties, have been made to differentiate strains of the tribe Eschericheae-a biochemically heterogeneous collection of the Enterobacteriaceae-into genera. In the sixth edition of Bergey's Manual (Breed et al., 1948), these strains, if of animal origin, are classified into three genera: Escherichia, Aerobacter, and Klebsiella. The genus Aerobacter is subdiv...

After arXiv.org, the RePEc Economics library offers the second-largest source of freely downloadable scientific preprints in the world. RePEc has a different business model and a different content coverage than arXiv.org. This paper addresses both differences. As far as the business model is concerned, RePEc is an instance of a concept that I call the “Open Library”. An Open Library is open in ...

Propylene is an important chemical intermediate in the chemical industry, which is conventionally produced either as a co-product to ethylene in steam crackers or byproductin refineries. With the increase in exploration of shale gas, new cracker projects for ethyleneproduction are based primarily on ethane feedstock, which yield almost no propylene [1,2] Onthe other hand, the demand...

Enterohemorrhagic Escherichia coli (EHEC) and enteropathogenic E. coli (EPEC) organisms are groups of pathogenic strains whose infections are characterized by a typical lesion of enterocyte attachment and effacement. They are involved in enteric diseases both in humans and in animals, and EHEC strains can be responsible for hemolytic uremic syndrome in humans. Previously, it was shown that the ...

The approximate CCSD(T)/CBS binding energies for the set of 23 hydrogen-bonded dimers (HB23) of the S66 set reported by Řezáč et al. (J. Chem. Theory Comput. 2011, 7, 2427-2438) were expected to be under-estimated based on the known under-binding tendency of the counterpoise correction combined with small basis sets. In this work, we present binding energies for the HB23 set of dimers obtained ...