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Min Jin-Young,Kim Jin Youp,성충만,Kim Seon Tae,조현진,문수진,Cho Sung-Woo,Hong Sang Duk,Ryu Gwanghui,Cho Kyoung Rai,Kim Young Hyo,Park Soo-Kyoung,Kim Dong-Kyu,Lee Dong Hoon,Heo Sung Jae,Lee Ki-Il,Kim Su Jin,Le 대한천식알레르기학회 2023 Allergy, Asthma & Immunology Research Vol.15 No.4
Purpose: Cluster analyses on inflammatory markers of chronic rhinosinusitis (CRS) in Asians from multicenter data are lacking. This multicenter study aimed to identify the endotypes of CRS in Koreans and to evaluate the relationship between the endotypes and clinical parameters. Methods: Nasal tissues were obtained from patients with CRS and controls who underwent surgery. The endotypes of CRS were investigated by measuring interleukin (IL)-5, interferon (IFN)-γ, IL-17A, IL-22, IL-1β, IL-6, IL-8, matrix metalloproteinase-9, eotaxin-3, eosinophil cationic protein, myeloperoxidase (MPO), human neutrophil elastase (HNE), periostin, transforming growth factor-β1, total immunoglobulin E (IgE), and staphylococcal enterotoxin (SE)-specific IgE. We performed hierarchical cluster analysis and evaluated the phenotype, comorbidities, and Lund-Mackay computed tomography (LM CT) score in each cluster. Results: Five clusters and 3 endotypes were extracted from 244 CRS patients: cluster 1 had no upregulated mediators compared to the other clusters (mild mixed inflammatory CRS); clusters 2, 3, and 4 had higher concentrations of neutrophil-associated mediators including HNE, IL-8, IL-17A, and MPO (T3 CRS); and cluster 5 had higher levels of eosinophil-associated mediators (T2 CRS). SE-specific IgE was undetectable in T3 CRS and had low detectable levels (6.2%) even in T2 CRS. The CRS with nasal polyps (CRSwNP) phenotype and LM CT scores showed no significant differences between T2 and T3 CRS, while the incidence of comorbid asthma was higher in T2 CRS than T3 CRS. In T3 clusters, higher levels of neutrophilic markers were associated with disease severity and CRSwNP phenotype. Conclusions: In Koreans, there is a distinct T3 CRS endotype showing a high proportion of CRSwNP and severe disease extent, along with T2 CRS.
미분탄 물성이 난류 분류형 미분탄 화염의 휘발분 반응영역에 미치는 영향
성연모(Yon-Mo Sung),문철언(Cheor-Eon Moon),강영민(Young-Min Kang),안재우(Jae-Woo An),서상일(Sang-Il Seo),김성철(Sung-Chul Kim),김태형(Tae-Hyung Kim),나종문(Jong-Moon Na),최경민(Gyung-Min Choi),김덕줄(Duck-Jool Kim) 한국연소학회 2009 KOSCOSYMPOSIUM논문집 Vol.- No.39
The availability of 2-dimensional visualization by intensified high-speed camera for detecting volatile reaction region in pulverized coal flames, which is divided into three regions, such as particle heatup region, volatile reaction region and char reaction region, was evaluated by comparing with result from point measurements of chemiluminescence intensity. To investigate the effects of pulverized coal properties on volatile reaction region in turbulent jet pulverized coal flame, various pulverized coal properties such as five different types of pulverized coal, two particle sizes for a bituminous coal and three moisture contents for a sub-bituminous coal were taken into consideration. As a result, the length of volatile reaction region by 2-dimensional measurements was about 11.4% longer than that by point measurements. The obtained results give us useful information for evaluating practical pulverized coal flame. The temperature rise of 35 to 45 ㎛ coal particle was faster than 75 to 90 ㎛ ones, which resulted in shift of volatile reaction region toward upstream. The peak temperature of 35 to 45 ㎛ coal particle was also 35K higher. The coal moisture contents, however, has little effects on the structure of pulverized coal flame under 15% of water content.
BIO-CLOD를 이용한 소화슬러지의 악취저감에 대한 연구
성일화(Sung, Il-Wha) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.12
본 연구에서는 하수처리장의 소화슬러지(digest sludge)를 대상으로 악취제거 및 유기물제거에 대한 타당성을 검토하 고자 BIO-CLOD를 넣은 반응조와 넣지 않은 반응조에 대하여 24시간, 48시간, 72시간 후 ammonia, methyl mercaptan(MMC) 및 H<sub>2</sub>S에 대해서 측정하였다. BIO-CLOD를 침적시킨 반응조(BIO-CLOD)에서 24시간 내에 ammonia는 48%인 것에 비해 H<sub>2</sub>S 와 MMC는 98%이상의 높은 제거율을 보인 반면에 BIO-CLOD를 침적시키지 않은 반응조(Non BIO-CLOD)에서는 24시간 내에 ammonia가 45%, H<sub>2</sub>S는 71%, MMC는 84%로서 악취제거 가능성을 보였다. 암모니아 농도는 시간이 지남에 따라 감소 하면서 질산성질소농도는 증가하는 질산화 현상을 보였으며, 소화슬러지내의 유황계 악취성분들이 호기성 미생물들에 의해 산화 분해되어 용액 중의 황산염농도를 증가시키는 데는 BIO-CLOD효과가 있었음을 알 수 있었으며, 황산염농도증가와 대 기중의 H<sub>2</sub>S 제거율간에는 상관관계가 있음을 알수 있었다. 반응조 유출수에서 유기물의 감소는 짧은 시간 내에서는 BIO-CLOD가 영향을 주지 않았으며, HRT 12시간과 HRT 24시간으로 운전하였을 때 경제적인 면에서 HRT 12시간을 고려 해야 할 것으로 판단되었다. In this study, to investigate the feasibility of malodorous substance and organic matter removal by digest sludge in sewage treatment plants, ammonia, methyl mercaptan(MMC), and hydrogen sulfide(H<sub>2</sub>S) in a reactor submerged with BIO-CLOD(BIO-CLOD) and a reactor not submerged with BIO-CLOD(Non BIO-CLOD) were measured at 24 hours, 48 hours, and 72 hours after the submergence of BIO-CLOD.Whereas the reactor in which BIO-CLOD was submerged showed an ammonia removal rate of 48% and high H<sub>2</sub>S and MMC removal rates exceeding 98% in 24 hours, the reactor in which BIO-CLOD was not submerged showed an ammonia removal rate of 45%, an H<sub>2</sub>S removal rate of 71%, and an MMC removal rate of 84% in 24 hours indicating the possibility of removal of malodor using BIO-CLOD. A nitrification was shown in which ammonia concentrations decreased over time while nitrate nitrogen concentrations increased and sulfur based malodor components were oxidation decomposed indicating that BIO-CLOD had effects to increase sulfate concentrations in the solution and that sulfate concentration increases and atmospheric H<sub>2</sub>S removal rates were correlated with each other. With regard to decreases in organic matter in reactor effluents, BIO-CLOD did not affect in a short period of time and when reactors were operated with HRT 12 hours and HRT 24 hours, HRT 12 hours was considered desirable in terms of economy.
성일광(Il-Kwang SUNG) 한국글로벌문화학회 2014 글로벌문화연구 Vol.5 No.1
19세기 말~20세기 초 이집트 페미니스트 지식인 카심 아민과 후다 샤으라위는 이집트 페미니즘의 이론적 초석을 놓았다. 아민은 여성 인권 신장을 위한 이론적 기초를 다졌으며 샤으라위는 이론 뿐만 아니라 실제 이집트 인권 운동에 투신하고 여성 인권단체를 조직하고 이끌었다. 두 지식인 모두 페미니즘과 이집트 민족주의의 통합을 통해 이집트 근대 국가 형성에 이바지했다. The purpose of this paper is to critically explore the feminism of two Egyptian feminists; Qasim Amin and Huda Sha‘rawi. These two Egyptian feminists laid the groundwork for Egypt"s feminism. Amin established an intellectual basis for Egypt"s feminism by suggesting that Egypt needs to learning gender equality from Western world such as, France. In the same vein Sha"rawi succeeded to organize Egyptian feminist organization (EFU) and led Egyptian feminist movement. Interestingly enough two intellectuals made best efforts to integrate their feminism into the emerging Egyptian nationalism.