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[Purpose] The effect of duration of smartphone use on neck and shoulder muscle fatigue and pain was investigated in adults with forward head posture. [Subjects and Methods] Thirty-four adults with forward head posture were classified into groups by duration of smartphone use: 11 used a smartphone for 10 minutes each (group 1), 12 for 20 minutes each (group(More)
Yomogin is an active compound isolated from Artemisia princep, a traditional Oriental medicinal herb, which has been shown to inhibit tumor cell proliferation. In this study, we investigated the effects of yomogin on the cytotoxicity, induction of apoptosis, and putative pathways of its actions in human promyelocytic leukemia cells. Yomogin-treated HL-60(More)
Among the nondestructive testing methods, the MFL(Magnetic Flux Leakage) PIG(Pipelines Inspection Gauge) is especially suitable for testing pipelines because the pipeline has high magnetic permeability. MFL PIG showed high performance in detecting the metal loss and corrosions. However, MFL PIG is difficult to detect the crack which occurred by(More)
The diethylether fraction from the leaves extract of Ligularia fischeri var. spiciformis (Compositae) was subjected to silica gel column chromatography and yielded three new terpenoids named spiciformisin a (1), spiciformisin b (3), and monocyclosqualene (2). Acyclic diterpenes, spiciformisin a and -b, were established as(More)
This paper introduces a MFL system developed by a research project, which has been being conducted by KOGAS and initiated in 2011, to develop ILI (In-Line Ispection) Robot named “PIBOT” for the inspection of 16” to 14” unpiggable natural gas pipelines. All elements and functions in the proposed MFL (Magnetic Flux Leakage) system(More)
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