• Journal of applied mathematics & informatics
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• 제37권3_4호
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• pp.235-244
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• 2019

In this paper, we introduce the notion of the (L,${\ast}$,${\odot}$)-limit spaces and investigate the relations (L,${\ast}$,${\odot}$)-limit spaces and (L,${\ast}$)-filters on ecl-premonoid. We give their examples.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제25권4호
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• pp.267-278
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• 2018

In this paper, we introduce the notion of the (L, ${\ast}$)-filter spaces on ecl-premonoids. Moreover, we obtain various (L, ${\ast}$)-filters incuced by two (L, ${\ast}$)-filters and give their examples.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제26권2호
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• pp.75-84
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• 2019

In this paper, we introduce quasiuniform convergence structure induced by operators on ecl-premonoid (L, ${\ast}$, ${\odot}$). Moreover, we obtain $(L,\;{\ast},\;{\odot})-quasiuniform$ convergence structure induced by two $(L,\;{\ast},\;{\odot})-quasiuniform$ convergence structures and gives their examples.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제26권4호
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• pp.255-265
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• 2019

In this paper, we define the notion of (L, ∗, ⊙)-quasiuniform convergence spaces on ecl-premonoid. From (L, ∗, ⊙)-quasiuniform structures, we can obtain various (L, ∗, ⊙)-quasiuniform convergence structures and give their examples.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제25권6호
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• pp.481-488
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• 2022

Purpose: Liver transplantation (LT) is the only curative treatment for acute liver failure (ALF) and acute-on-chronic liver failure (ACLF). In high-volume therapeutic plasma exchange (HV-TPE), extracorporeal liver support filters accumulate toxins and improve the coagulation factor by replacing them. In this study, we aimed to evaluate the effectiveness of HV-TPE in pediatric patients with ALF and ACLF. Methods: We reviewed the records of children waiting for LT at Severance Hospital who underwent HV-TPE between 2017 and 2021. Aspartate aminotransferase (AST), alanine aminotransferase (ALT), total and direct bilirubin (TB and DB), gamma-glutamyl transferase (GGT), ammonia, and coagulation parameter-international normalized ratio (INR) were all measured before and after HV-TPE to analyze the liver function. The statistical analysis was performed using IBM SPSS Statistics for Windows, version 26.0 (IBM Co., Armonk, NY, USA). Results: Nine patients underwent HV-TPE with standard medical therapy while waiting for LT. One had neonatal hemochromatosis, four had biliary atresia, and the other four had ALF of unknown etiology. Significant decreases in AST, ALT, TB, DB, GGT, and INR were noted after performing HV-TPE (930.38-331.75 IU/L, 282.62-63.00 IU/L, 11.75-5.59 mg/dL, 8.10-3.66 mg/dL, 205.62-51.75 IU/L, and 3.57-1.50, respectively, p<0.05). All patients underwent LT, and two expired due to acute complications. Conclusion: HV-TPE could remove accumulated toxins and improve coagulation. Therefore, we conclude that HV-TPE can be regarded as a representative bridging therapy before LT.

• 분석과학
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• 제23권5호
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• pp.477-484
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• 2010

항균제 및 자외선 차단물질, 유기인계 난연제 등과 같은 personal care products는 개인이 일상생활에서 광범위하게 사용하는 비누, 화장품, 치약 등에 포함된 합성유기화합물로 하 폐수 처리시설에서 완벽하게 제거되지 않고 생활하수에 포함된 상당수의 양이 환경 중으로 배출되고 있다. 외국사례의 경우 하천, 해양, 토양, 저질, 생물상 등 다양한 환경매체에서 검출되고 있으며, 잔류성 생물농축성이 있어 지속적으로 노출시 생태계 및 인간의 건강에 심각한 영향을 끼칠 우려가 있다. 본 연구에서는 수질환경시료 중 15종의 personal care products를 액-액추출하여 GC/MS로 분석하였으며, 방법검출한계는 $0.004\sim0.273\;{\mu}g/L$의 범위를 나타내었다. 하천수에서는 TCEP, TCPP 등 2종이 검출되었으며, 하수처리장 시료에서는 triclosan, 4-MBC, EHMC, BP-3, TCEP, TPP, TBEP 등 7종이 검출되었다.