Chemical analyses and mass spectrometry were used to study the structure of the lipopolysaccharide (LPS) isolated from Aeromonas bestiarum strain K296, serotype O18. ESI-MS revealed that the most abundant A. bestiarum LPS glycoforms have a hexa-acylated or tetra-acylated lipid A with conserved architecture of the backbone, consisting of a 1,4'-bisphosphorylated β-(1→6)-linked D-GlcN disaccharid...

The O6 serogroup Escherichia coli strain 536 carries two hemolysin (hly) determinants integrated into the chromosome. The two hly determinants are not completely identical, either functionally or structurally, as demonstrated by spontaneous deletion mutants carrying only one of them and by cloning each of the two determinants separately into cosmid vectors. Each hly determinant is independently...

We use a policy experiment in Indonesia to show how local political boundaries affect ethnic tension. Redrawing district borders along group lines reduces conflict. However, the gains stability are undone or even reversed when new increase polarization. Greater polarization leads more violence around majoritarian elections but has little effect lower-stakes, proportional representation election...

This paper focuses on the questions to what extent agglomeration effects and localized inter-organizational linkages influence different types of innovative performance of firms. Doing so adds to the relatively scarce firm-level literature regarding the role of regional environment for the innovative performance of firms by disentangling the often conflated effects of agglomeration effects and ...

Using data from China’s 1990 and 2000 censuses, this paper examines interprovincial migration by describing its spatial patterns and estimating models based on the gravity approach. Between the censuses, interprovincial migration increased considerably in size and became more unidirectional and concentrated. Modeling results highlight the role of regional economic disparity and migration stock,...

This paper constructs and analyses a long run time series for regional inequality in China from the Communist Revolution to the present. There have been three peaks of inequality in the last fifty years, coinciding with the Great Famine of the late 1950s, the Cultural Revolution of the late 1960s and 1970s, and finally the period of openness and global integration in the late 1990s. Econometric...