• Journal of the Korean Society of Radiology
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• v.14 no.7
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• pp.863-870
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• 2020

The purpose of this study was to analyze the correlation between the grade of fatty liver diagnosed by ultrasonography and hyperlipidemia and obesity indicators by age groups. A total of 1,470 patients of various sex and age groups were examined by abdominal ultrasonography at the H Center in Chungbuk. The patients were classified as normal and fatty liver by age groups (below twenty, the thirties, forty, fifties, and over sixties). The grade of fatty liver was classified in detail as Grade 1 (mild fatty liver), Grade 2 (moderate fatty liver), Grade 3 (severe fatty liver). We selected indicators of hyperlipidemia as total cholesterol, triglyceride, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol. The obesity indicators were height, weight, body mass index, and waist circumference. The demographical descriptive statistic analysis and frequency analysis by age groups were performed. The difference of average and correlation between hyperlipidemia and obesity indicators were analyzed. As a result, patients over 60 have fatty liver regardless of sex. there was a difference between triglyceride, high-density lipoprotein cholesterol, weight, body mass index, and waistline for all age groups. The degree of fatty liver was highly correlated with waist size and body mass index for all age groups.

• Journal of Wetlands Research
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• v.23 no.2
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• pp.154-162
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• 2021

The naturally opened Han river estuary is a place where the flows of the Han river, Imjin river, Yaesung river meet with West Sea of Korea, so the hydrodynamic mechanism(Impact-Response) structure of Han river estuary is complex. Continuous observation and measurement due to the morphological characteristics at the estuary are required to maintain the estuary environment and river management facilities. However, the Sannam wetland(the study area) is in the military operation area. Therefore, Sannam wetland has the limited access under the control from military office. In 2020, there had a natural disaster due to flooding in August and COVID-19, and it made a survey hard. The noncontact survey technique, the analysis of LANDSAT images at Sannam wetland, was applied to analyze riverbed fluctuation and morphological transformation around Sannam wetland. LANDSAT images obtained from EarthExplorer, USGS and analyzed by QGIS. The analysis was performed based on the area and the distance near Sannam wetland. As a result, an erosion was happened on the downstream of the study area, and the upstream of the study area did not have any serious sediment transport. Considering the resolution of LANDSAT images, this noncontect survey technique is applicable to manage the study area. From the analysis of LANDSAT images, it is assumed that the tidal effect is greater than the inflow from the upstream. The pattern change of tidal response causes the damage of the river facilities near the Hangang river estuary.