Ya-chao Yang

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The function of intact long-type DupA protein in Helicobacter pylori was analyzed using immunoblotting and molecular biology techniques in the study. After cloning, expression and purification, ATPase activity of DupA protein was detected. Antibody was produced for localization and interaction proteins analysis. The dupA-deleted mutant was generated for(More)
The duodenal ulcer promoting gene (dupA), located in the plasticity region of Helicobacter pylori (H. pylori), is predicted to form a type IV secretory system (T4SS) with vir genes around dupA. In the study, we investigated the association between the dupA cluster status and the virulence of H. pylori in a littoral region of Northeast China. Two hundred and(More)
ABSTRACT In this paper, a nonlinear controller is designed for a wheeled mobile robot with three omnidirectional wheels. The omnidirectional wheel has an advantage of universal moving directions on a flat surface without changing its pose. The dynamics of the omnidirectional wheel includes rolling and slipping. Three configurations of mobile robots and an(More)
The severity of Helicobacter pylori-related disease is correlated with the presence and integrity of a cag pathogenicity island (cagPAI). cagPAI genotype may have a modifying effect on the pathogenic potential of the infecting strain. After analyzing the sequences of cagPAI genes, some strains with the East Asian-type cagPAI genes were selected for further(More)
In this paper, a robust adaptive control strategy is proposed for trajectory control of an omnidirectional vehicle with three omni-wheels, which have the ability to move simultaneously with independently rotational motion. The omnidirectional vehicle experiences uncertainties and unknown system parameters. The robust adaptive controller is designed based on(More)
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