The recent discovery of a geographically dispersed clonal group of Escherichia coli O4:H5 that includes prototypic uropathogenic strain J96 prompted us to determine the prevalence of J96-like strains within serogroup O4 and to further assess the characteristics of such strains. We used O:K:H;F serotyping, PCR-based genomic fingerprinting, pulsed-field gel electrophoresis (PFGE), multilocus enzy...

Many writers have claimed that research and development (R&D) has two ‘faces’. In addition to the conventional role of stimulating innovation, R&D enhances technology transfer by improving the ability of firms to learn about advances in the leading edge (‘absorptive capacity’). In this paper we explore this idea empirically using a panel of industries across twelve OECD countries. We find evide...

Engineers, Innovative Capacity and Development in the Americas Using newly collected national and sub-national data and historical case studies, this paper argues that differences in innovative capacity, captured by the density of engineers at the dawn of the Second Industrial Revolution, are important to explaining present income differences, and, in particular, the poor performance of Latin A...

The Shape of the Income Distribution and Economic Growth: Evidence from Swedish Labor Market Regions We analyze the association between inequality and growth across 72 labor market regions in Sweden 1990-2006. Highly accurate measures of growth and inequality (gini, Q3, p9075, p5010) are derived from population register data. The regional set-up also reduces problems with omitted variable bias ...

This article reviews issues related to the incorporation of non-renewable resources in the theory of economic growth and development. As an o¤shoot of the new growth theory of the last two decades a series of contributions have studied endogenous technical change in relation to resource scarcity. We discuss the main approaches within this literature and consider questions like: How is the new l...

The focus on human capital as a driver of economic growth for developing countries has led to undue attention on school attainment. Developing countries have made considerable progress in closing the gap with developed countries in terms of school attainment, but recent research has underscored the importance of cognitive skills for economic growth. This result shifts attention to issues of sch...

We calculate the single-valued and spinor representations of SO4, the orientation-preserved subgroup of O4, on the base of our previous work on four-dimensional cubic group O4, [email protected] [email protected] 0

In non-aqueous solution, diazomethane and diazoethane react with the O2, O4 and N-3 sites of uridine, thymidine, 1-methyluracil and 1-methylthymine. Diazoethane has a higher affinity for alkylating oxygens than does diazomethane. The relative ratio of O2:O4:N-3 methyl products is 1:2:16 and of ethyl products the ratio is 1:1:2. When the diazoethane reaction is performed in neutral buffered solu...