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D - Penicillamine에 의한 담즙 정체성 황달
이준상(Joon Sang Lee),백옥지(Ok Ji Paik),김한성(Han Sung Kim),박성수(Sung Su Park),한경근(Kyung Keun Han),박양훈(Yang Hun Park),제영성(Yeong Sung Jae),박욱화(Wook Hwa Park) 대한소화기학회 1993 대한소화기학회지 Vol.25 No.4
Since 1966, D-Penicillamine has been used in the management of scleroderma. However, its therapeutic usefulness has been limited by a high incidence of a variety of adverse reactions. Cholestatic jaundice secondary to D-Penicillamine administratiori has been reported infrequently. We have experierced a case of acute chotestatic jaundice in a patient with scleroderma treated with D- Fenicillamine. We have encountered a patients who recovered from this complication whn D Penicillamine therapy was withdrawn. Literature was re!iewed briefly.
뢰영성 ( Yong Sung Loi ),권영모 ( Kwon Yeong Mo ),박종흠 ( Park Jong Heum ),박선동 ( Park Seon Dong ) 대한본초학회 2003 大韓本草學會誌 Vol.18 No.3
N/A objectives: Exposure to oxidant molecules can generate reactive oxigen species(R0S; for example, H₂O₂, O₂-, OH .). These free radicals can alter DNA, proteins and membrane phospholipids. ROS are responsible for aging and many diseases including cancer, neurodegenerative diseases and cardiovascular diseases. Thus, to prevent against celluar damages associated with oxidative stress, antioxidants are important and many research about antioxidants are being conducted over the world. methods: This study was performed to research the antioxidant activities of Insamgobonwhan(IG) and its component groups in vitro, so intended to know the possibility of Insamgobonwhan(1G) as drug which can prevent aging. The experimental group was divided into 4 groups: Imsamgobonwhan(IG), two dong-two jiwhang(IG-1; 麥門冬, 天門冬, 熱地黃, 生地黃), two dong(IG-2; 麥門冬, 天門冬) and two jiwhang(IG-3; 熱地黃, 生地黃). results: 1. All experimental groups had significant antioxidant activity in linoleic acid system on concentration dose--dependently in comparison with control group. But IG and IG-2 have more effect than IG-1 and IG-3 relatively. 2. DPPH radical scavenging experiment and inhibitory effect experiment on superoxide generation in xanthine-xanthine oxidase system showed that all experimental groups had a dose-dependent effect. But IG and IG--1 had more effect than IG-2 and IG-3. 3. Inhibitory effect experiment on superoxide generation induced by xanthine-xanthine oxidase system showed that all experimental groups had a dose-dependent effect. But IG and IG-1 had more effect than IG-2 and IG-3. 4. Inhibitory effect experiment on lipid peroxidation reaction in H₂O₂-Fe²system showed that all experimental groups had a dose--dependent effect. But IG and IG--1 had more effect than IG-2 and IG-3. 5. Experiment on lipid peroxidation removal effect showed that all experimental groups had a dose-dependent effect. But IG and IG-2 have more effect than IG-1 and IG-3. 6. Experiment on glutathion activity effect showed that all experimental groups had some effect. But each groups had no significant difference. 7. Experiment on catalase activity effect showed that all experimental groups had some effect. But each groups had no significant difference. conclusion: These results showed that IG has an antioxidant activity, so it seems to have some anti-aging effect. From comparisons of each experimental groups, IG`s antioxidant effect is likely to be associated with IG-1 mostly.
박영성(Yeong-Seong Park),이상현(Sang-Hyun Lee),서문삼(Moon-Sam Suh) 대전대학교 환경문제연구소 2003 환경문제연구소 논문집 Vol.7 No.-
Catalytic oxidation characteristics of benzene(one of important compound of volatile organic compounds : VOCs) was investigated in a flxed bed flow reactor using Mn/γ-Al₂O₃ catalyst. As operating variables for the experiment, reaction temperature(200~500℃), benzene concentration(1,OOO~3,000ppm), space velocity (5,000~60,000hr<sup>-1</sup>) were applied. The experimental results showed that the conversion of catalytic oxidation of benzene increased with decreasing space velocity, while decreased with increasing inlet VOCs concentration. The catalytic oxidation reaction for Benzene could be expressed as the first order homogeneous reaction of which the activation energy was 9.2kcal/mol.
증례 : 대장내시경으로 제거된 S상 결장에 감입된 이쑤시개 1예
박진일 ( Jin Il Park ),엄성현 ( Sung Hyeon Eum ),김철연 ( Cheul Yeon Kim ),윤지환 ( Ji Hwan Yoon ),황홍석 ( Hong Seok Hwang ),김영성 ( Yeong Sung Kim ),곽동협 ( Dong Hyup Kwak ) 대한내과학회 2006 대한내과학회지 Vol.71 No.6
저자들은 급성 복증으로 오인되어 충수돌기제거술을 받고 난 후 재발된 하복부 동통을 호소한 환자에서 대장 내시경상 S상 결장 내에 감입되어 국소 농양을 형성하고 있는 이쑤시개를 발견하여 내시경적으로 제거하였던 증례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Most ingested foreign bodies spontaneously pass through the upper and lower intestinal tract. The impaction of an ingested foreign body in the colon is rare. Foreign bodies swallowed inadvertently often cause serious complications, such as perforation, obstruction, abscess formation, enterocolic fistula, or hemorrhage. Physicians should proceed with routine medical care while considering the possibility of the ingestion of a foreign body In cases where abdominal pain of an unknown origin is observed, particularly in elderly patients who wear dentures, alcoholics, mentally disturbed, or rapid eating, and presenting with altered bowel habits. We report a case of a colonoscopically-removed wooden toothpick that impacted the sigmoid colon and was complicated by the formation of a local abscess with a review of the literature. (Korean J Med 71:668-672, 2006)
고정층 반응기에서 K-계열 흡수제의 압력에 따른 HCl 흡수 거동 연구
김재영(Jae-Young Kim),박영철(Young Cheol Park),조성호(Sung-Ho Jo),류호정(Ho-Jung Ryu),백점인(Jeom-In Baek),박영성(Yeong Seong Park),문종호(Jong-Ho Moon) 한국청정기술학회 2013 청정기술 Vol.19 No.2
본 연구에서는 고정층 반응기(높이 15 cm, 내경 0.5 cm)에서 K-계열 건식 흡수제(K₂CO₃/Al₂O₃, 한국전력공사 전력연구원)를 이용하여 반응압력 변화에 따른 염화수소 흡수 실험을 수행하였다. 반응온도는 가스화 직후, 필터를 거쳐서 주입되는 것을 가정하여 400 ℃로 설정하였으며, 반응기체 농도는 750 ppm HCl (N₂ balance)으로 설정하였다. 반응압력은 1, 5, 10, 15, 20 bar로 증가시켰다. 압력이 증가할수록 K-계열 흡수제의 흡수 성능이 증가하였다. 흡수제를 구성하고 있는 주요 물질인 K₂CO₃가 HCl 가스와 반응하여 KCl 결정을 형성하였으며, 강한 결합에너지로 인하여 흡수제의 재생이 실질적으로 불가능 하였다. 이에 대한 광학적, 물리적, 화학적 특성을 SEM, EDX, BET, TGA, XRD를 이용하여 분석하였다. 400 ℃, 20 bar 조건(가스화 이후 탈할로겐 공정의 온도 및 압력조건)에서 K₂CO₃ 흡수제는 Ca 계열 및 Mg 계열의 흡수제에 비해 높은 HCl 흡수능 및 HCl/N₂ 분리 거동을 보였다. In this study, the hydrogen chloride removal using K-based dry sorbents (K₂CO₃ /Al₂O₃ , KEPRI, Korea) was studied with varying the pressure in a fixed bed reactor (15 cm tall bed with 0.5 cm I.d.). Working temperature was 400℃ and feed gas concentration was 750 ppm (HCl vol%, N₂ balance). The chloride sorption capacity of sorbent increases with increasing pressure (1, 5, 10, 15 and 20 bar). Also, after forming KCl crystal by reaction with K₂CO₃ and HCl, owing to the strong bonding energy, sorbent regeneration was practically impossible. Its optical, physical and chemical characterizations were evaluated by SEM, EDAX, BET, TGA and XRD. At 400 ℃ and 20 bar condition, working condition for the dehalogenation process after gasification, K-based dry sorbent showed high HCl sorption capacity and HCl/N₂ separation performances comparing with Ca-based and Mg-based dry sorbents.
유영국(Young-Kuk You),신상준(Sang-Jun Shin),박영성(Yeong-Seong Park) 대전대학교 환경문제연구소 2013 환경문제연구소 논문집 Vol.17 No.-
H2S adsorption characteristics of adsorbent made by fallen leaves were investigated. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope(SEM) and measurements of BET surface area were adopted. As major adsorption characteristics, adsorption equilibrium capacity was measured by using a batch type experimental apparatus for operating variables such as adsorption temperature(25~45℃) and adsorbent types. The experimental result showed that the H2S adsorption equilibrium capacity of adsorbent made by fallen leaves decreased with increasing adsorption temperature due to physical adsorption phenomena. It was also found that the H2S adsorption capacity of the adsorbent increased remarkably by an acid treatment with HCl solution.
정수슬러지를 활용하여 제조한 흡착제의 고정흡착층에서의 H₂S 흡착특성연구
이충원(Chung-Won Lee),한상철(Sang-Chul Han),박영성(Yeong-Seong Park) 대전대학교 환경문제연구소 2012 환경문제연구소 논문집 Vol.16 No.-
H₂S adsorption characteristics of adsorbent made by drinking water treatment sludge were investigated. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope(SEM), measurements of BET surface area were adopted. As the major adsorption characteristic, breakthrough curve was measured by using a continuous fixed bed adsorption column for operating variables such as aspect ratio(L/D, 3∼9), gas flow rate(0.2∼1.0 liter/min) and type of samples. The experimental results showed that the breakthrough pint decreased with increasing gas flow rate, but increased with increasing aspect ratio. It was also found that the physical and chemical treatments of drinking water treatment sludge are very important for the improvement in H₂S adsorption capacity due to property changes of the sludge.
순산소연소 조건에서 Drop tube furnace를 이용한 운전변수에 따른 석회석의 탈황특성 연구
최욱 ( Wook Choi ),조항대 ( Hang Dae Jo ),최원길 ( Won Kil Choi ),박영성 ( Yeong Sung Park ),길상인 ( Sang In Keel ),이형근 ( Hyung Keun Lee ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.6
순산소연소는 높은 연소 효율과 적은 배가스량, 낮은 질소산화물 농도를 장점으로 하고 있으며 연소온도 조절을 위한 배가스 재순환에 의해 배출되는 연소가스중의 CO2 농도를 95%까지 농축이 가능하므로 석탄 연소설비에 대한 유망한 CCS 기술로 부각되고 있다. 본 연구는 순산소연소 조건에서 배가스의 재순환을 통한 CO2 농도 증가에 기인하는 직접 황화반응이 탈황효율에 미치는 영향을 평가하고 반응온도, CO2 농도, SO2 농도상승이 SO2 제거효율에 미치는 영향과 배가스 중 수분 등이 SO2 제거효율에 미치는 영향을 실험적으로 고찰하였다. 반응온도 1,200 ℃까지 온도 상승에 따라 SO2의 제거효율은 증가하였고 Ca/S비, CO2 농도와 수분이 증가할수록 SO2 제거효율이 증가하였다. 이러한 운전변수는 영향인자 평가를 통하여 Ca/S 비>체류시간>O2농도>반응온도>SO2농도>CO2농도>수분농도의 순으로 탈황반응에 영향을 미치는 것으로 나타났다. 또한 운전변수별 실험결과를 이용하여 로내 건식탈황에 있어서 각 운전변수별 성능 영향인자를 평가할 수 있는 반경험적 모델식을 도출하였다. Oxy-fuel combustion with many advantages such as high combustion efficiency, low flue gas flow rate and low NOx emission has emerged as a promising CCS technology for coal combustion facilities. In this study, the effects of the direct sulfation reaction on SO2 removal efficiency were evaluated in a drop tube furnace under typical oxy-fuel combustion conditions represented by high concentrations of CO2 and SO2 formed by gas recirculation to control furnace combustion temperature. The effects of the operating parameters including the reaction temperature, CO2 concentration, SO2 concentration, Ca/S ratio and humidity on SO2 removal efficiency were investigated experimentally. SO2 removal efficiency increased with reaction temperature up to 1,200 due to promoted calcination of limestone reagent particles. And SO2 removal efficiency increased with SO2 concentrations and the humidity of the bulk gas. The increase of SO2 removal efficiency with CO2 concentrations showed that SO2 removal by limestone was mainly done by the direct sulfation reaction under oxy-fuel combustion conditions. From the impact assessment of operation parameters, it was shown that these parameters have an effects on the desulfurization reaction by the order of the Ca/S ratio > residence time > O2 concentration > reaction temperature > SO2 concentration > CO2 concentration > water vapor. The semi-empirical model equation for to evaluate the effect of the operating parameters on the performance of in-furnace desulfurization for oxy-fuel combustion was established.