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조우아(Woo A Joe) The Research and Information Service 2005 남부대학교 논문집 Vol.5 No.-
The study was performed investigate effects of water and ethanol extracts of Persicae semen on antioxidative, nitrite scavenging and antimicrobial activity. In a DPPH assay of free radical scavenging activity 83.8 % of the Persicae semen water extract and 98% of the Persicae semen ethanol extracts at 1,000ppm. These results are higher compared to those of BHA at equal concentration. In the Xanthine oxidase inhibition test, 1,000ppm of BHA showed an effect of 27%, while Persicae semen ethanol extract showed an effect of 50%. Nitrite scavenging effects 58% of Persicae semen ethanol extract. In the Antibacterial test Propionibacterrium acnes, in the growth inhibition test. Antibacterial effect could be identified from the 5mg/ me Persicae semen water extract. According to these test results, we find Persicae semen highly applicable in the industry as an advanced material for cosmetics and food. 본 논문은 도인 (Persicae semen)의 항산화 효과f tyrosinase 억제효과, 아질산염소거능 및 항균 효과를 살펴보았다. 도인의 기능성 화장품 및 식품의 응용 가능성을 살펴보았다. 도인은 열수 추출과 에탄올 추출을 통해 시료를 준비하여 실험에 사용하였다. 전자 공여능(electron donating abiliη) 실험에서 l,000ppm의 도인 열수 추출물과 에탄올 추출물에서 83.8%, 98%의 효과를 나타내어 같은 농도의 BHA에 비해 높은 효과를 나타내었다. 미백활성을 나타내는 tyrosinase 억제실험에서 1,000pp Xanthine oxidase 억제실험에서는 l,000ppm의 BHA가 27%의 효과를 나타내었고, 도인 에탄올추출물은 50%의 효과를 나타내었다. 미백활성실험에서 도인 에탄올 추출물 1,000ppm에서 87% 이상의 효과를 나타내었다. 1,000ppm의 도인 에탄올 추출물에서 58%의 아질산염 소거능을 나타내었다. Propionibacterrium acnes에 대한 항균실험에서 생육저해도 실험에서는 5mg/ me의 도인 열수 추출물에서 항균력을 확인 할 수 있었다. 이와 같은 실험결과로 도인(Persicae semen)은 산업에 응용가능성이 높고 화장품 신소재로서 응용 가능함을 확인 할 수 있었다.
S-719 A case of granulomatosis with polyangiitis with gallbladder involvement
( A-mi Woo ),( Sang Eun Yoon ),( Sang Yoon Kim ),( Min Sun Joe ),( In Je Kim ),( Jisoo Lee ) 대한내과학회 2016 대한내과학회 추계학술대회 Vol.2016 No.1
Granulomatosis with polyangiitis (GPA) is a systemic disease characterized by granulomatous inflammation and necrotizing vasculitis classically involving upper and lower respiratory tract and kidney. Here, we report the first case of GPA involving the gallbladder and the intestine as unusual manifestations. A 65-year-old woman was first admitted to our hospital for acute abdominal pain, and was diagnosed with acalculous cholecystitis. She received laparoscopic cholecystectomy, but soon after discharge, she was readmitted presenting with fever, abdominal pain, and hematochezia. She also had tingling in the hands and feet, scleritis, and history of sinusitis. She had microscopic hematuria, and anti-proteinase 3 antineutrophil cytoplasmic antibody was positive. A colonoscopy showed multiple ulceration and inflammation, and the gallbladder biopsy revealed medium-sized necrotizing vasculitis. Based on clinical features and histologic findings, a diagnosis of GPA with gallbladder and intestinal involvement was established. She was treated with glucocorticoid and cyclophosphamide with clinical improvement. GPA should be included in the differential diagnoses in patients with multi-organ involvement including the gallbladder and the intestine.
Persicae semen의 화장품 약리활성에 관한 연구
조우아 ( Woo A Joe ),안봉전 ( Bong Jeun An ),이창언 ( Chang Eon Lee ),장민정 ( Min Jung Jang ),천순주 ( Soon Ju Cheon ),성지연 ( Ji Yeun Sung ),최은영 ( Eun Young Choi ),강보연 ( Bo Yeun Kang ),정연숙 ( Yeun Suck Jeung ),김영선 ( 한국응용생명화학회 2006 Applied Biological Chemistry (Appl Biol Chem) Vol.49 No.2
Leaching kinetics of neodymium in sulfuric acid from E-scrap of NdFeB permanent magnet
윤호성,유승준,Chul-Joo Kim,Kyeong Woo Chung,Su-Jeong Lee,A-Ram Joe,Yang-Ho Shin,Se-Il Lee,Jin-Geol Kim 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.4
The leaching kinetics of neodymium in NdFeB permanent magnet powder was analyzed for the purposeof recovery of neodymium in sulfuric acid (H2SO4) from E-scrap (electric scrap) of NdFeB permanent magnet powdertreated by oxidation roasting to form a reactant. The reaction was conducted with H2SO4 concentrations ranging from2.5 to 3.5M, a pulp density of 110.8 g/L, an agitation speed of 750 rpm, and a temperature range of 30 to 70 oC. After4 h of leaching, the neodymium content in the E-scrap powders was completely converted into a neodymium sulfate(Nd2(SO4)3) solution phase in H2SO4 in the condition of 70 oC and 3.0M H2SO4. Based on a shrinking core model withsphere shape, the leaching mechanism of neodymium was determined by the rate-determining step of the ash layerdiffusion. Generally, the solubility of pure rare earth elements in H2SO4 is decreased with an increase in leaching temperatures. However, the leaching rate of the neodymium in E-scrap powders increased with the leaching temperaturesin this study because the ash layer included in the E-scrap powder provided resistance against the leaching. Using theArrhenius expression, the apparent activation energy values were determined to be 2.26 kJmol−1 in 2.5M H2SO4 and2.77 kJmol−1 in 3.0 M H2SO4.
Ho-Sung Yoon,Seung-Joon Yoo,Chul-Joo Kim,Kyung Woo Chung,Jin Young Lee,Shun-Myung Shin,Su-Jeong Lee,A-Ram Joe,Se-Il Lee 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.10
We studied the leaching kinetics of recovering neodymium in sulfuric acid from the rare earth elements(REE) slag concentrated by smelting reduction from a magnetite ore containing monazite. The leaching kinetics onneodymium was conducted at a reactant concentration of 1.5 g REE slag per L of 0.3 M H2SO4, agitation of 750 rpmand temperature ranging from 30 to 80 oC. Neodymium oxide included in the REE slag was completely converted intoneodymium sulfate phase (Nd2(SO4)3) in H2SO4 after the leaching of 5 h, 80 oC. As a result, the leaching mechanismwas determined in a two-stage model based on the shrinking core model with spherical particles. The first step wasdetermined by chemical reaction, and the second step was determined by ash layer diffusion because the leaching ofREEs by the first chemical reaction increases the formation of the ash layer affecting as a resistance against the leaching. By using the Arrhenius expression, the apparent activation energy of the first chemical reaction step was found to be9kJmol−1. After the first chemical reaction, leaching reaction rate was determined by the ash layer diffusion. The apparentactivation energy of ash layer diffusion was found to be 32 kJmol−1.
Perinatal Outcomes Of Fetal Growth Restriction Between Late Preterm And Term Birth Infants
( Ji Sun Surh ),( Seon A Hwang ),( Han Na Park ),( Seung Ju Jeon ),( Soon Pyo Lee ),( Ka Hyun Nam ),( Suk Young Kim ),( Dong Woo Son ),( So Yeon Shim ),( Hae Jung Joe ) 대한산부인과학회 2012 Obstetrics & Gynecology Science Vol.55 No.8
Objective To estimate the absolute increase in the risk for adverse neonatal outcomes of fetal growth restriction between late preterm and term birth and to identify risk factors for neonatal morbidity among late preterm and term birth infants. Methods A retrospective review of 2,954 singleton infant between 34 and 42 weeks of gestation born at our hospital over the 5 years were enrolled and they were divided into four groups as late preterm small for gestational age (SGA), late preterm adequate for gestational age (AGA), term SGA and term AGA, respectively. The prenatal ultrasonographic findings between SGA and AGA in late preterm birth were assessed. Maternal and neonatal complications were compared with SGA and AGA between late preterm and term birth infants. The statistical analyses for frequencies and relative risks in each group were calculated by SPSS ver. 19.0. Results In prenatal evaluation between SGA and AGA in late preterm birth, amniotic fluid volume, abdominal circumference and umbilical artery Doppler resistance index value were different significantly ( P<0.001). Preeclampsia and oligohydramnios were found more common in SGA of late preterm birth compared with AGA of term birth. Jaundice, respiratory distress syndrome, necrotizing enterocolitis, sepsis, congenital anomalies, hypoglycemia, and germinal matrix`s hemorrhage, occurred more frequent in SGA of late preterm birth than in AGA of term birth. Conclusion Not only adequate prenatal evaluation and obstetrical decision-making but also long-term evaluation are needed to improve perinatal outcomes of growth restricted infants in late preterm birth.