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Curdlan is produced by Agrobacterium sp. ATCC 31749 under nitrogen-limited conditions not associated with cell growth. A novel curdlan production process was developed based on the different nutrient requirements for microbial cell growth and its efficiency was increased by integrating carbon/nitrogen sources control and sequencing dual fed-batch fermentors(More)
A novel hydrogel was prepared from polysialic acid (PSA) and carboxymethyl chitosan (CMCS) using glutaraldehyde as the cross-linking agent. The resulting PSA–CMCS hydrogel exhibited pH sensitivity, in which the swelling ratio under acidic conditions was higher than those under neutral or alkaline conditions. The swelling ratio of PSA–CMCS hydrogel at(More)
A neutral high salt tolerant protease from Aspergillus oryzae CICIM F0899 which could be used for soy sauce production and other relevant applications under high-salt conditions was purified to homogeneity through ammonium sulfate precipitation, ion-exchange chromatography and gel filtration chromatography with overall recovery of 2%. Its molecular weight(More)
Bluetooth is an emerging technology to build a solution for providing short range, low power, low cost, and ubiquitous wireless environments. In this paper we propose a algorithm for asynchronous data traffic at the Medium Access Control(MAC) layer to meet Bluetooth characteristic and compare with other scheduling algorithms. The algorithm, named Efficient(More)
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