석탄화력발전소 저온영역에서 조촉매 성분 및 함량에 따른 Metal type SCR 코팅 촉매 성능 연구

주은영,마동민,강다현,김미라,최동석,나우진,박해경 한국산학기술학회 2023 한국산학기술학회논문지 Vol.24 No.12

As NOx emission regulations are tightening, conventional SCR catalysts installed in coal-fired power plants cannot satisfy the regulations. In this study, NOx was reduced using a metal substrate catalyst with a high bulk surface area and high thermal responsiveness at low temperatures. The catalytic slurries were prepared with 14wt% V and different contents of Co, Ce, and W. The de-NOx performances of the prepared catalysts were investigated using a laboratory-scale atmospheric pressure reactor. The catalysts were characterized by air jet erosion, pressure drop test, Brunauer-Emmett-Teller surface area measurements, x-ray fluorescence spectroscopy, and scanning electron microscopy. At 180°C, the catalysts with Co and Ce exhibited lower de-NOx performance than those prepared with V alone. The catalyst with 8 wt. % W showed 4.6% higher de-NOx performance than the catalyst with V alone. A comparison of the pressure drop with the commercial honeycomb catalyst revealed the CPSI of the metal substrate to be twice as high, but the pressure drop was lower than the commercial honeycomb catalyst, and the de-NOx performance was better. Overall, the SCR catalyst coated on a metal substrate is a new type of catalyst that can be applied to various fields where the SCR process is applied.

Chrysippus on nature and soul in animals

주은영 CAMBRIDGE UNIV PRESS 2007 CLASSICAL QUARTERLY Vol.57 No.1

한국 Drosophila아속 (Diptera: Drosophilidae) 10종에 대한 계통학적 연구

주은영,이양숙,김남우 慶山大學校 基礎科學硏究所 2002 基礎科學 Vol.6 No.1

한국산 Drosophila아속 10종(D. virilis, D. tsigana, D. lacertosa, D. angularis, D. brachynephros D. curvispina, D. kuntzei, D. nigromaculata, D. takadai, D. unispina)을 대상으로 형태적 수리분석을 실시하여 계통관계를 알아보았다. 집괴분석과 분지분석으로 30종류의 형태적 형질을 분석한 결과 D. angularis와 D. brachynephros의 유연관계가 가장 높았으며, D. virilis와 D. takadai 사이가 가장 낮았다. D. quinaria종군은 0.7이상의 높은 유연관계를 보였다. 한편 D. virilis는 10종 중 원시형질을 가장 많이 보유하였으며, D. kuntzei 가 가장 늦게 분지된 것으로 분석되었다. 이상의 결과에서 한국산 Drosophila아속 10종은 D. virilis, D. tsigana, D. lacertosa의 group과 D. angularis, D. brachynephros D. curvispina, D. kuntzei, D. nigromaculata, D. takadai, D. unispina의 group으로 나눌 수 있으며, D. virilis가 속한 group이 더 primitive하다고 하겠다. 그러나 이 group이 다른 group의 직접적인 조상형은 아니며 다른 조상형이 있었을 것으로 생각된다. Phylogenic relationships among the 10 species (D. virilis, D. lacertosa, D. tsigana, D. angularis, D. brachynephros, D. curvispina, D. kuntzei, D. nigromaculata, D. takadai, D. unispina) of the subgenus Drosophila in Korea were investigated by taximetrical analysis. The taximetrical analyses of the 10 species according to the 30 morphological characters were performed using UPGMA and cladistic analysis. Two species D. angularis and D. brachynephros clustered at high similarity enough to suggest that they were closely related species and relatively high 0.8 have been found between quinaria species group. Also, D. virilis has the most primitive characters. These results might suggest that the subgenus Drosophila consist of two group; the 1st group of D. virilis, D. laoertosa, D. tsigana, and the 2nd group of D. angularis D. brachynephros, D. curvispina, D. kuntzei, D. nigromaculata, D. takadai and D. unispina. The group to which D. virilis belonged was considered as the primitive. However, it could not be the direct primitive to the another group. Instead it was presumed that there had been another ancestor.

소금쟁이(Gerris paludum insularis)의 상대성장분석

주은영 慶山大學校 1994 論文集 Vol.12 No.1

The study was initiated to observe the relative growth of the eight body part in the postembryonic development of Gerris paludum insularis. The formula used for calculating the relative growth is y = bx a (Huxley and Teissier, 1936). The results are summarized as follows. 1. The relative growth to the head width, the coefficients of relative growth of the six body parts show the positive allometry except pronotum width. To the body length, the coefficients of relative growth of the foreleg and hindleg show the positive allometry. To the pronotum width, the coefficients of relative growth of the seven body parts show positive allometry. In the relative growth to the antenna, the coefficients of relative growth of the midleg, body length, foreleg and hindleg show positive allometry. To the rostrum, the coefficients of relative growth of the five body parts show positive allometry except the negative allometry of the head width and pronotum width. To the foreleg, the coefficient of relative growth of the hindleg shows only the positive allometry. In the relative growth to the midleg, the coefficients of relative growth of the body length, foreleg and kindles show the positive allometry. To the hindleg, the coefficients of the relative growth of seven body parks show negative allometry. 2. The initial growth index generally changes based upon the growth ratio, but changes independently in a few aspects. 3. In the relative growth to the head width, the types of the growth gradient of the body length, antenna, rostrum, foreleg, midleg and hindleg are the convexing pattern, while the pronotum width shows the decreasing pattern. The growth centers of the convexing pattern are in the third, fourth and fifth instar larvae. Whereas the growth center of the decreasing pattern is in the first instar larva. 4. In the relative growth to the body length, head width, pronotum width, foreleg, midleg and hindleg, the growth gradient of antenna and rostrum have a strong resemblance, and the two parts have the same growth center in all aspects. 5. The coefficient of body parts which the growth center is in a young instar larva show the negative a11ometry, while the coefficient of body pares which the growth center is in an advanced instar larva show the positive allometry.

소금쟁이의 성장인자 분석

주은영 慶山大學校 1997 論文集 Vol.15 No.1

The study was attempted to analyze the changing patterns of growth for the eight body parts, through the growth in all five immatures and adult stage of Gerris paludum insularis. The factor analysis was employed by Holzinger and Harman(1941). The results are summarized as follows :A11 eight variables are found to have three factors affecting the growth of G. paludum insularis. The first factor is contributes to a general factor. The second and third factors are acceptable as a group factor showing the different direction of action by the variables. The communality of the mid1eg(0.8842) is the greatest, and is decreased in the following order, the pronotum width, the hindleg, the foreleg, the body length, the head width, the antenna, and the rostrum(0.3199). The unigueness of the rostrum (0.6801) is the most significant, while that of the mid1eg(0.1159) is less significant. The body parts in a young instar larva have a weak relationship, while an advanced instar larva has a strong relationship.

엠페도클레스의 "뿌리들" : 파르메니데스의 진리 편 및 독사 편과의 비교

주은영 한국철학사상연구회 2002 시대와 철학 Vol.13 No.2

신생아 담즙 정체증에서 무담즙변의 유무와 $Tc^{99m}$ DISIDA 간담도 주사 결과간의 상관성과 생화학적 검사의 차이에 관한 연구

주은영,안연모,김용주,문수지,최윤영,Joo, Eun-Young,Ahn, Yeon-Mo,Kim, Yong-Joo,Moon, Soo-Ji,Choi, Yun-Young 대한소아소화기영양학회 2002 Pediatric gastroenterology, hepatology & nutrition Vol.5 No.1

목적: 신생아 담즙 정체증 환아의 감별을 위해 $Tc^{99m}$ DISIDA 간담도 주사 검사 상 신생아 간염과 간외 담도 폐쇄증 의증의 임상증상, 이학소견, 생화학 검사 등을 비교하고, 무담즙변과 $Tc^{99m}$ DISIDA 간담도 주사 검사의 관련성을 비교함으로서 진단에 도움을 얻고자 하였다. 방법: 1993년 6월부터 2001년 1월까지 한양대학병원 소아과 및 소아외과에 직접반응형 고빌리루 빈혈증을 주소로 입원했던 4개월 미만의 환아 중 $Tc^{99m}$ DISIDA 간담도 주사를 시행한 29명의 환아들을 대상으로 하였다. 이 중 간외 담도 폐쇄증 의증은 9명이고 신생아 간염은 20명으로 임상증상 및 이학적 소견, 생화학적 검사, $Tc^{99m}$ DISIDA 간담도 주사 결과를 조사하였다. 결과: 1) 간외 담도 폐쇄증 의증 환아가 신생아 간염보다 더 빨리 진단되고, 두 집단 모두 정상체중, 만삭아가 대부분이고, 남아에서 호발했다. 황달은 두집단 모두에게, 무담즙변은 간외 담도 폐쇄증 의증환아 모두에게 나타났으며 신생아 간염은 무담즙 변이 10%에서만 나타났다. 2) 내원 당시 검사상 direct bilirubin이 간외 담도 폐쇄증 의증일 때는 $6{\pm}2.6$ mg/dL, 신생아 간염은 $4.0{\pm}2.5$ mg/dL로 간외 담도 폐쇄증 의증에서 유의하게 증가되었고, 간외 담도 폐쇄증 의증은 소변 bilirubin이 더 많이 나타났다. 3) 간외 담도 폐쇄증 의증에서 direct bilirubin, total bilirubin, ALT, AST, ALP의 정상화되는 기간이 좀 더 오래 걸렸다. bilirubin 수치의 호전을 보이는 비율은 비슷했고 간외 담도 폐쇄증 의증이 심화되는 경우가 22.2%로 더 많았고 주로 수술 후 부작용에 의한 것이었다. 4) 무담즙변 환아 중에 $Tc^{99m}$ DISIDA 간담도 주사 상 소장 내 방사활성이 있는 환아가 18.2%였고, 방사활성이 없는 환아가 81.8%로 나타났고, 간외 담도 폐쇄증 의증으로 판단되어 수술한 환아가 63.6%로 나타났다. 5) 무담즙변 여부와 $Tc^{99m}$ DISIDA 간담도 주사 결과간의 상관계수에서 r 값은 -0.858로서 절대값이 1에 가깝고 음수로 이는 역상관 관계가 높아 무담즙변 환아와 방사활성이 없을 경우, 담즙변 환아와 방사활성이 있는 경우간 상관관계가 높게 나타났다. 6) 무담즙변 환아 중$Tc^{99m}$ DISIDA 간담도 주사 검사 상 소장 내 방사활성이 없는 환아에서 total bilirubin이 유의하게 증가되어 있고, direct bilirubin, total bilirubin, ALT, AST도 증가되어 있었으나 유의하지는 않았다. 7) $Tc^{99m}$ DISIDA 간담도 주사 검사 상 소장 내 방사활성이 있는 환아 중 무담즙변이 없는 경우에 ALT가 유의하게 높았고, direct bilirubin, total bilirubin, AST는 유의하지 않게 높았으며 무담즙변일 경우에는 ALP, 소변 bilirubin 양성률이 더 높았지만 유의하지는 않았다. 그러나 이에 대해서는 더 많은 환자에 대한 검사가 필요하리라 생각된다. 결론: 간외 담도 폐쇄증 의증 환아는 무담즙변, direct bilirubin 4 mg/dL 이상, 소변 bilirubin 양성, $Tc^{99m}$ DISIDA 간담도 주사 검사 상 방사활성이 없을 때 가능성이 높다. 간외 담도 폐쇄증 의증에서 수술 후 검사결과의 정상화되는 기간이 좀 더 오래 걸리고, 호전되는 경우는 간외 담도 폐쇄증 의증, 신생아 간염이 각각 66.7%, 70%로 두 군이 비슷했다. 심화되는 경우는 간외 담도 폐쇄증 의증에서 더 많았고 주로 수술 후 부작용에 의한 것으로 생각되며 오히려 수술하지 않은 2명에서 특별한치료 없이 호전 양상을 보이기도 했다. 무담즙변 환아 Purpose: The most common causes of neonatal cholestasis are neonatal hepatitis (NH) and extrahepatic biliary atresia (EHBA). Since neonatal cholestasis presents with variable expression of same pathologic process and has similar clinical, biochemical, and histologic features between EHBA and idiopathic neonatal hepatitis (NH), differential diagnosis is often difficult. We reviewed the differences of clinical characteristics and laboratory data to find out any correlation between the results of $Tc^{99m}$ DISIDA scan and presence of acholic stool. Methods: Between June 1993 and January 2001, total 29 infants younger than 4 month-old underwent $Tc^{99m}$ DISIDA scan. Their biochemical tests and clinical course were reviewed retrospectively. Results: Patients who had negative intestinal activity on $Tc^{99m}$ DISIDA scan showed acholic stool and revealed higher serum direct bilirubin and urine bilirubin level. 18.2% of patients with acholic stool showed intestinal activity on $Tc^{99m}$ DISIDA scan and 81.8% of them did not. All the patients without acholic stool showed positive intestinal activity on $Tc^{99m}$ DISIDA scan. The result of $Tc^{99m}$ DISIDA scan and the presence of acholic stool showed high negative correlation (r :-0.858). Patients with acholic stool and negative intestinal activity on $Tc^{99m}$ DISIDA scan showed higher serum total bilirubin level. Patients without acholic stool and positive intestinal activity on $Tc^{99m}$ DISIDA scan showed higher serum level of ALT. Conclusion: Patients with acholic stool and negative intestinal activity showed high correlation, but 18.2% of patients with acholic stool showed positive intestinal activity. So operative cholangiogram or transcutaneous liver biopsy should be performed for confirmation.

콩의 종류와 청국장 제조 조건에 따른 기능성의 변화

주은영,김동한,박찬성 동아시아식생활학회 2008 동아시아식생활학회 학술발표대회논문집 Vol.- No.-

Frequency of Self-Monitoring of Blood Glucose during the School Day Is Associated with the Optimal Glycemic Control among Korean Adolescents with Type 1 Diabetes

주은영,이지은,강희숙,박신구,홍용희,신영림,손민 대한당뇨병학회 2018 Diabetes and Metabolism Journal Vol.42 No.6

Background: This study aimed to evaluate the relationship between the frequency of self-monitoring of blood glucose (SMBG) and glycosylated hemoglobin (HbA1c) levels among Korean adolescents with type 1 diabetes mellitus (T1DM). Factors affecting the SMBG frequency were analyzed in order to improve their glycemic control. Methods: Sixty-one adolescents aged 13 to 18 years with T1DM were included from one tertiary center. Clinical and biochemical variables were recorded. Factors associated with SMBG frequency were assessed using structured self-reported questionnaires. Results: Average total daily SMBG frequency was 3.8±2.1 and frequency during the school day was 1.3±1.2. The mean HbA1c level was 8.6%±1.4%. As the daily SMBG frequency increased, HbA1c levels declined (P=0.001). The adjusted odds of achieving the target HbA1c in participants who performed daily SMBG ≥5 significantly increased 9.87 folds (95% confidence interval [CI], 1.58 to 61.70) compared with those performed SMBG four times a day. In the subjects whose SMBG frequency <1/day during the school day, an 80% reduction in the adjusted odds ratio 0.2 (95% CI, 0.05 to 0.86) showed compared to the group with performing two SMBG measurements in the school setting. The number of SMBG testing performed at school was significantly high for individuals assisted by their friends (P=0.031) and for those who did SMBG in the classrooms (P=0.039). Conclusion: Higher SMBG frequency was significantly associated with lower HbA1c in Korean adolescents with T1DM. It would be necessary to establish the school environments that can facilitate adequate glycemic control, including frequent SMBG.

中小建設業의 組織論的 分析을 通한 自求方案 모색

朱恩瑩 慶北大學校 經營大學院 1991 最高經營者課程 論文集 Vol.- No.14