• Title/Summary/Keyword: 우경철

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Study of Factor Validity of Korean Version Self-Compassion (한국판 자기자비 척도의 요인 타당성 연구)

  • Ku, Do-Yeon;Jung, Min-Chul
    • The Journal of the Korea Contents Association
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    • v.16 no.9
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    • pp.160-169
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    • 2016
  • Self-Compassion(SCS) Scale is developed by Neff(2003a) and translated by Kim, Lee, Cho, Chae, Lee(2008). But, there is the limitation with validation SCS and Korean version Self-Compassion(K-SCS) performed in college students and the incoherence for the results of the scale's factor analysis in other countries. Therefore, this study examined the validity of factor structure in SCS based on data in 435 adult aged from 18 to 79. For this, we conducted exploratory factor analysis(EFA) and confirmatory factor analysis(CFA), and we examined the each adequacy of two-factor, tree-factor and six-factor model. The result of EFA supported six-factor and the result of CFA was the six factor model best as well.

Chemical Constituents from the Stems of Lagerstroemia indica and Their Anti-oxidant Effect (배롱나무의 항산화 활성 성분)

  • Woo, Kyeong Wan;Sim, Mi Ok;Park, Eel Jong;Kim, Min Suk;Suh, Won Se;Cho, Hyun Woo;Kwon, Hak Cheol;Park, Jong Cheol;Lee, Kang Ro
    • Korean Journal of Pharmacognosy
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    • v.47 no.3
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    • pp.204-210
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    • 2016
  • Phytochemical investigation of the 80% MeOH extract from the stems of Lagerstroemia indica resulted in the isolation of eighteen compounds; four norsesquiterpenes, fourteen phenolic derivatives. Their chemical structures were characterized by spectroscopic methods to be tachioside (1), isotachioside (2), 2,4,6-trimethoxyphenyl ${\beta}$-D-glucopyranoside (3), gallic acid 4-methyl ether (4), protocatechuic acid (5), gallic acid (6), vanillic acid (7), vanillin (8), 2-methoxy-5-hydroxymethyl-phenyl-1-O-(6"-galloyl)-${\beta}$-D-glucopyranoside (9), 2,4,6-trimethoxyphenol-1-O-${\beta}$-D-(6'-O-galloyl)-glucopyranoside (10), 4-hydroxy-3-methoxyphenyl-1-O-(6'-O-galloyl)-${\beta}$-D-glucopyranoside (11), vomifoliol (12), vomifoliol 9-O-${\beta}$-D-glucopyranoside (13), 6R,9R-3-oxo-${\alpha}$-ionol-9-O-${\beta}$-D-glucopyranoside (14), dihydrophaseic acid 4'-O-${\beta}$-D-glucopyranoside (15), ${\beta}$-hydroxypropiovanillone 3-O-${\beta}$-D-glucopyranoside (16), myrciaphenone A (17), and coumaric acid (18). Compounds 1-5 and 7-18 were isolated for the first time from this plant. Compounds 1-18 were investigated for their antioxidant properties using DPPH and ABTS radical scavenging capacity assay, $Fe^{2+}$ chelating, and FRAP assay. It was found that 4, 6, and 11 possessed the highest antioxidant capacities.

Synchronized Power Control Embedded System Based on Core-A Platform (Core-A 플랫폼을 이용한 동기형 전력 제어 임베디드 시스템)

  • Lee, Woo-kyung;Moon, Dai-Tchul;Park, In-Hag
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.10a
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    • pp.809-812
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    • 2013
  • This paper realize power control embedded system with one master of Core-A 32-bit RISC processor and several slaves controling power with synchronized digital signals. Core-A platform provided by Dynalith Systems consists of Core-A processor, AMBA bus, SSRAM, AC97, DMA, UART, GPIO etc. Slave is made by both digital part and analog part. The former generates various power control patterns synchronized with master signal. The latter converts 220V power proportional to 4 bit digital signals. Design of Embedded system is executed in Flowrian2 of System Centroid Inc., in which software is cross-compiled and hardware is verified by simulation. Embedded system is implemented in FPGA board and CPLD chips as well as PCB board for analog power control.

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Design of Synchronized Power Control Embedded System Based on Core-A Platform (Core-A 플랫폼을 이용한 동기형 전력제어 임베디드 시스템 설계)

  • Lee, Woo-Kyung;Moon, Dai-Tchul
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.18 no.6
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    • pp.1413-1421
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    • 2014
  • This paper realize power control embedded system with one master of Core-A 32-bit RISC processor and several slaves controling power with synchronized digital signals. Core-A platform is consisted of Core-A processor, AMBA bus, SSRAM, AC97, DMA, UART, GPIO etc. Slave is made by both digital part and analog part. The former generates various power control patterns synchronized with master signal. The latter converts 220V power proportional to 4 bit digital signals. design of Embedded system is executed in Flowrian II, in which software is cross-compiled and hardware is verified by simulation. Embedded system is implemented in FPGA board and CPLD chips as well as PCB board for analog power control.

Anti-Proliferative Effect of Tetraphenylporphine (TPP) as an Iron Chelator on Vascular Smooth Muscle Cells and its Release Profiles from Polymer Coating Layer (철 킬레이터로서의 tetraphenylporphine의 혈관평활근세포의 성장억제효과와 고분자 코팅막으로부터의 방출 특성)

  • Park, Min-Hee;Kang, Soo-Yong;Park, Hyun-Jeong;Seo, Jin-Seon;Park, Young-A;Kim, Ji-Eun;Kim, Yang-Geun;Whang, Bae-Geon;Munkhjargal, Odonchimeg;Shim, Young-Key;Kho, Weon-Gyu;Lee, Woo-Kyoung
    • Journal of Pharmaceutical Investigation
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    • v.38 no.2
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    • pp.93-98
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    • 2008
  • The drug-eluting stent (DES) implantation is a widely acceptable treatment for coronary heart disease. It was reported that iron chelator had anti-proliferative effect on human vascular smooth muscle cells (HA-VSMCs). In this study, tetraphenylporphine (TPP) was selected as an iron chelator and drug for DES. MTT assay showed that TPP had antiproliferative effect on HA-VSMCs. TPP and polycaprolactone (PCL) were coated onto stainless steel plate using a spraycoating method. From the surface morphology examination of the coated plate by SEM, smooth polymer coating layer could be observed. The thickness of coating layer could be controlled by changing repeating time of coating. From in vitro release test, sustained release of TPP was observed from plate during two weeks. Thus, TPP as iron chelator can be used as drug for stent coating because of its antiproliferative effect and sustain release profile.

Textural and Geochemical Characteristics of Ferromanganese Crusts from the Lomilik and Litakpooki Seamounts, Marshall Islands, West Pacific (서태평양 마샬제도 Lomilik와 Litakpooki 해저산 망간각의 조직 및 지화학적 특성)

  • Woo, Kyeong-Sik;Park, Sung-Hyun;Jung, Hoi-Soo;Moon, Jai-Yoon;Lee, Kyeong-Yong;Choi, Youn-Ji
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.6 no.1
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    • pp.13-26
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    • 2001
  • Six ferromanganese crusts from the Lomilik and Litatfooki seamounts in the Marshall Islands were analyzed for texture, geochemistry and stratigraphy to delineate the paleoceanographic conditions. The crusts can be divided into three layers; 1) outermost massive layer (Layer 1), 2) middle porous Fe-oxides rich layer infllled with biointemal clasts (Layer 2), and 3) innermost massive layer cemented and/or replaced by carbonate fluoapatite (CFA) (Layer 3). The Layer 1 contains higher Mn, Co, Ni, and Mg than other two layers, and the Layer 2 was relatively more enriched in Fe, Al, Ti, Ba, Cu, and Zn. However, the Layer 3 shows higher Ca and P and lower Mn, Fe, Co, and Ni contents than overlying two layers. Based on the Co-chronometry, the crusts are postulated to have begun to grow from 56-31 Ma (early Eocene to Oligocene). The boundaries between layers 1 and 2, and layers 2 and 3 are dated to be 7-3 Ma and 26-14 Ma, respectively. High contents of Ca and P in Layer 3 clearly indicate that the layer had been phosphatized prior to the formation of Layer 2. Considering the well-preserved mjcrostructures in Layer 3, it is unlike that the crusts themselves were recrystallized in suboxic condition. Also, the lower Co concentrations in Layer 3 may imply that the Co supply was not constant during the formation of Layer 3. Layer 2, characterized by the porous texture, grew over Layer 3 during 26-9 Ma. Internal biogenic sediments including foraminifera within the original cavities and the enrichment of organophillic elements such as Ba, Cu, and Zn, suggest that Layer 2 have below high production regions. Also, high content of allumino silicate components may indicate increased terrigeneous input during the formation of Layer 2. The Layer 2. The Layer 1 has been subjected to little diagenetic influence since the Pliocene.

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Effects of Drought Stress and Nitrogen Fertilization on Growth and Physiological Characteristics of Pinus densiflora Seedlings Under Elevated Temperature and CO2 Concentration (대기 중 온도 및 CO2 농도 조절에 따른 건조 스트레스와 질소 시비가 소나무의 생장 및 생리적 특성에 미치는 영향)

  • Song, Wookyung;Lee, Bora;Cho, Nanghyun;Jung, Sungcheol;Kim, Eun-Sook;Lim, Jong-Hwan
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.22 no.2
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    • pp.57-67
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    • 2020
  • Pinus densiflora is the most widely distributed tree species in South Korea. Its ecological and socio-cultural attributes makes it one of the most important tree species in S. Korea. In recent times however, the distribution of P. densiflora has been affected by dieback. This phenomenon has largely been attributed to climate change. This study was conducted to investigate the responses of growth and physiology of P. densiflora to drought and nitrogen fertiliz ation according to the RCP 8.5 scenario. A Temperature Gradient Chamber (TGC) and CO2. Temperature Gradient Chamber (CTGC) were used to simulate climate change conditions. The treatments were established with temperature (control versus +3 and +5℃; aCeT) and CO2 (control: aCaT versus x1.6 and x2.2; eCeT), watering(control versus drought), fertilization(control versus fertilized). Net photosynthesis (Pn), stomatal conductance (gs), biomass and relative soil volumetric water content (VWC) were measured to examine physiological responses and growth. Relative soil VWC in aCeT significantly decreased after the onset of drought. Pn and gs in both aCeT and eCeT with fertiliz ation were high before drought but decreased rapidly after 7 days under drought because nitrogen fertilization effect did not last long. The fastest mortality was 46 days in aCeT and the longest survival was 56 days in eCeT after the onset of drought. Total and partial biomass (leaf, stem and root) in both aCeT and eCeT with fertiliz ation were significantly high, but significantly low in aCeT. The results of the study are helpful in addressing P. densiflora vulnerability to climate change by highlighting physiological responses related to carbon allocation under differing simulated environmental stressors.

The food and nutrient intakes from daily processed food in Korean adults: based on the 6th Korea National Health and Nutrition Examination Survey data (2013~2015) (한국 성인의 가공식품으로부터의 식품 및 영양소 섭취량 평가 : 제 6기 (2013~2015) 국민건강영양조사를 바탕으로)

  • Ha, Ae Wha;Kim, Woo Kyoung
    • Journal of Nutrition and Health
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    • v.52 no.5
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    • pp.422-434
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    • 2019
  • Purpose: The consumption of processed foods has recently been increasing due to changes in the living environment. The purpose of this study was to identify the contribution of processed food to the nutrient intake of adult Koreans. Methods: A total of 15,760 adult people in the $6^{th}$ National Health and Nutrition Examination Survey (2013 ~ 2015) were included in this study. According to the Korea Food and Drug Administration's classification criteria for processed foods, the 24 hour dietary recall data of the subjects were classified as processed food or natural food. The processed food intake, nutrient intake and major processed food sources by food groups were analyzed. Results: Men consumed more processed foods than did the women. Consumption of processed foods decreased with age, but it increased with the education level and the income level. The total daily processed food intake accounted for 68.1% of the total food intake. The food groups with high processed food intake were beverage, vegetables, cereals and grain products, fruits, and milk and dairy products in this order. The top food source of each food groups were beer, kimchi, bread, processed apple products, and milk. After adjusting for age, gender, and energy intake, all the nutrient intakes and percentage of dietary reference intakes for Koreans, except carbohydrates, were significantly higher in processed foods than in natural foods. The sodium intake from the processed food was 96.3% of total daily sodium intake. The intakes of nutrients from processed foods, excluding vitamins C, dietary fiber, iron, and vitamin A, were higher in men than in women. The intake of sodium from processed foods was highest for people of 30 ~ 49 years of age, and the intake of sodium from processed foods decreased for people over 50. Conclusion: Korean adults consumed more processed food than the natural food, consuming more calories and most of the nutrients from the processed food overall total daily intakes. The intake of processed foods is expected to further increase in the future, and nutritional education and research on the ingestion and selection of healthy processed foods are necessary.