Fluoranthene dyes for the detection of water content in methanol.

Three novel fluoranthene dyes were obtained by cycloaddition reactions using acrylonitrile and dialkyl acetylenedicarboxylates. Their fluorescence properties in different polar-organic solvents were investigated systematically. Meanwhile, spectral changes induced by the addition of water in methanol were observed, indicating that these fluoranthenes dyes can be efficiently used to detect the water content in methanol as probes.

Multilocus sequence typing analysis of Cronobacter spp. isolated from China.

Multilocus sequence typing (MLST) has proven to be an effective approach for the subtyping isolates of the Cronobacter genus and to exhibit a high level of discrimination between isolates. In this study, 151 Cronobacter strains were isolated from different sources and provinces across China from 2010 to 2012 and analyzed by MLST. Their sequence type profiles were compared with strains from other countries which were widely geographically and temporally distributed.

[The pathogenic ecology research on plague in Qinghai plateau].

Objective: To study the pathogenic ecology characteristics of plague in Qinghai plateau.

Methods: Applied molecular biology techniques, conventional technologies and geographic information system (GIS) to study phenotypic traits, plasmid spectrum, genotype, infected host and media spectrum etc.of 952 Yersinia pestis strains in Qinghai plateau plague foci, which were separated from different host and media in different regions during 1954 to 2012.

[Study on the pathogen of plague in Sanjiangyuan area in Qinghai province].

Objective: To study the biological characteristics of Yersinia pestis and to develop prevention and control program on plague in Sanjiangyuan areas, Qinghai province.

Methods: To identify the biologic types and molecular biological features of Y.pestis isolated in Sanjiangyuan area from 1954-2007.