Wankyu Choi

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A conference key distribution system is a scheme to generate a conference key, and then to distribute this key to only participants attending the conference in order to communicate with each other securely. In this paper, an efficient conference key distribution system is presented by employing a symmetric balanced incomplete block design (SBIBD), one class(More)
BACKGROUND Mesenchymal stem cells (MSCs) have broad-spectrum therapeutic effects in various diseases, and thus have many clinical applications. However, it is difficult to produce sufficient numbers of MSCs for clinical use, and improved culture systems are required. Here, we report the effects of calcium (Ca2+) and hypoxia on the proliferation of human(More)
Microfluidics forms the basis of unique experimental approaches that visualize the development of neural structure using micro-scale devices and aids the guidance of neurite growth in an axonal isolation compartment. We utilized microfluidics technology to monitor the differentiation and migration of neural cells derived from human embryonic stems cells(More)
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