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구치균,이종갑,이제호,최형준 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.3
Sialolithiasis is the formation of calcareous concretions within ductal system of a major or minor salivary gland. They are formed by deposition of calcium salts around a central nidus which may consist of desquamated epithelial cells, bacteria, foreign bodies, or products of bacterial decomposition. An ll-year-old boy complained of pain during meals and intermittent mild swelling in the right submandibular region. Although it was not detected in true occlusal radiograph. panoramic radiograph showed a round radiopaque mass 3mm in diameter. Computed tomography (CT) was taken for locating the stone and 3-dimensional reconstruction was per-formed . Under general anesthesia, sialoadenectomy was done through extraoral approach. diagnosis of submandibular sialolithiasis using high-resolution CT with reconstructions was helpful for surgical decisions, namely radical removal of the submandibular gland and its duct.
Bex1 Participates in Muscle Regeneration by Regulating Myogenic Satellite Cell Differentiation
Jae Hyung Koo 한국실험동물학회 2010 Laboratory Animal Research Vol.26 No.2
Bex1 protein is upregulated in regenerating muscle and interacts with calmodulin, a Ca<SUP>2+</SUP>-binding protein involved in cell cycle regulation. Following cardiotoxin-induced injury the regenerating muscle of Bex1 knock-out mice exhibits prolonged cell proliferation and delayed cell differentiation compared to wildtype mice. To gain insight into this process, we compared the regenerating myogenic morphologies of Bex1 knock-out and wild-type mice at several time points. Bex1-positive cells were identified by double immunofluorescence staining. These studies demonstrated that a population of cells that are Bex1- positive after injury are c-Met/basal lamina-positive and Mac-1-negative indicating that they are derived from at least a subset of myogenic progenitor/satellite cells but not invading immune cells. In addition, in regenerating muscle, Bex1 co-localizes with calmodulin in the cytoplasm of the late myoblast or early myotube stage of myogenesis. These results suggest that Bex1 participates in muscle regeneration through the regulation of satellite cell proliferation and differentiation by its interaction with calmodulin. Current studies of Bex1 may provide a new molecular tool for the identification of activated satellite cell and open the way to new or improved therapeutic regimens against progressive muscular atrophy.
정구형(Koo-Hyung Chung),노재형(Jae-Hyung Roh),조기선(Ki-Seon Cho),김학만(Hak-Man Kim) 대한전기학회 2010 전기학회논문지 P Vol.59 No.3
Although electricity market structures may be different from each country, they have a long-term forward market and a short-term spot market in general. Particularly, a bilateral contract transacted at a long-term forward market fixes the electricity price between a genco and a customer so that the customer can avoid risk due to price-spike in the spot market. The genco also can make an efficient risk-hedging strategy through the bilateral contract. In this paper, we propose a new mechanism for deriving the optimal bilateral contract price using game theory. This mechanism can make the customer reveal his true willingness to purchase so that an adequate bilateral contract price is derived.