Pengcheng Chen

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We report a real-space visualization of the formation of hydrogen bonding in 8-hydroxyquinoline (8-hq) molecular assemblies on a Cu(111) substrate, using noncontact atomic force microscopy (NC-AFM). The atomically resolved molecular structures enable a precise determination of the characteristics of hydrogen bonding networks, including the bonding sites,(More)
We performed synchrotron x-ray diffraction and infrared (IR) experiments combined with evolutionary structure predictions and band structure calculations on Ag 2 Se to ß20 GPa. We present evidence for phase I (β-Ag 2 Se) as a potential three-dimensional topological insulator by its increase in optical band gap and the topologically nontrivial nature of its(More)
MOTIVATION A molecular interaction network can be viewed as a network in which genes with related functions are connected. Therefore, at a systems level, connections between individual genes in a molecular interaction network can be used to infer the collective functional linkages between biologically meaningful gene sets. RESULTS We present the human(More)
We investigated the feasibility of the combined detection of HLA-A2/MAGE-A3 epitope-specific cytotoxic T lymphocytes (CTLs) and serum alpha-fetoprotein (AFP) for specific diagnosis of hepatocellular carcinoma (HCC). We detected the frequency of MAGE-A3 epitopes (p112-120, KVAELVHFL) in spontaneous CTLs in the peripheral blood of HCC patients, liver(More)
In the tracking control of mobile robot, the cascaded approach has been applied for several years, the controller designed with this method is simple in structure and easy in computation. But it suffered from a speed jump at the initial time. When combining with neural dynamics model, a novel controller is proposed. In this new controller, neural dynamics(More)
The liver resident lymphoid population is featured by the presence of a large number of CD3(+)CD56(+) cells referred as natural T cells. In human hepatocellular carcinoma (HCC) patients, the natural T cells were found to be sharply decreased in tumor (5.871 ± 3.553%) versus non-tumor (14.02 ± 6.151%) tissues. More intriguingly, a substantial fraction of the(More)
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