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Seong-Yop Lim,Doo-Hwan Jung,Seong-Ho Yoon,Isao Mochida 한국탄소학회 2008 Carbon Letters Vol.9 No.1
Understanding the exact structure and surface characteristics of carbon materials is very important for design, synthesis, and utilization of the best carbon form with particular functions and high performance for practical applications such as selective adsorption adsorbents, energy storage materials, catalysts or catalyst supports, etc. This review paper focuses on carbon surface properties and the interaction between gaseous or liquid substances and carbon surface. Catalytic functions of carbon materials are reviewed including recent progress in synthesis and applications of nano-carbons.
Lim, Seong-Yop,Jung, Doo-Hwan,Yoon, Seong-Ho,Mochida, Isao 한국탄소학회 2008 Carbon Letters Vol.9 No.1
Understanding the exact structure and surface characteristics of carbon materials is very important for design, synthesis, and utilization of the best carbon form with particular functions and high performance for practical applications such as selective adsorption adsorbents, energy storage materials, catalysts or catalyst supports, etc. This review paper focuses on carbon surface properties and the interaction between gaseous or liquid substances and carbon surface. Catalytic functions of carbon materials are reviewed including recent progress in synthesis and applications of nano-carbons.
Son, Jun Seong,Song, Jae-Hoon,Ko, Kwan Soo,Yeom, Joon Sup,Ki, Hyun Kyun,Kim, Shin-Woo,Chang, Hyun-Ha,Ryu, Seong Yeol,Kim, Yeon-Sook,Jung, Sook-In,Shin, Sang Yop,Oh, Hee Bok,Lee, Yeong Seon,Chung, Doo The Korean Academy of Medical Sciences 2010 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.25 No.7
<P>Recent changes in healthcare systems have changed the epidemiologic paradigms in many infectious fields including bloodstream infection (BSI). We compared clinical characteristics of community-acquired (CA), hospital-acquired (HA), and healthcare-associated (HCA) BSI. We performed a prospective nationwide multicenter surveillance study from 9 university hospitals in Korea. Total 1,605 blood isolates were collected from 2006 to 2007, and 1,144 isolates were considered true pathogens. HA-BSI accounted for 48.8%, CA-BSI for 33.2%, and HCA-BSI for 18.0%. HA-BSI and HCA-BSI were more likely to have severe comorbidities. <I>Escherichia coli</I> was the most common isolate in CA-BSI (47.1%) and HCA-BSI (27.2%). In contrast, <I>Staphylococcus aureus</I> (15.2%), coagulase-negative <I>Staphylococcus</I> (15.1%) were the common isolates in HA-BSI. The rate of appropriate empiric antimicrobial therapy was the highest in CA-BSI (89.0%) followed by HCA-BSI (76.4%), and HA-BSI (75.0%). The 30-day mortality rate was the highest in HA-BSI (23.0%) followed by HCA-BSI (18.4%), and CA-BSI (10.2%). High Pitt score and inappropriate empirical antibiotic therapy were the independent risk factors for mortality by multivariate analysis. In conclusion, the present data suggest that clinical features, outcome, and microbiologic features of causative pathogens vary by origin of BSI. Especially, HCA-BSI shows unique clinical characteristics, which should be considered a distinct category for more appropriate antibiotic treatment.</P>
Seong-Kwan PARK,Hi Jun CHOE,Mu-Young AHN,Kyong-Yop PARK 한국산업응용수학회 2006 한국산업응용수학회 학술대회 논문집 Vol.1 No.2
We consider the computational problems related to high voltage (HV) circuit breakers. To effectively design HV circuit breakers, a meshfree method which was proposed by the authors is tested. The meshfree method is implemented to a simplified model for the HV circuit breaker and showed a robust behavior even in a severe boundary condition. A good shock capturing is shown in the computations and a delicate gas diffusion through a slit is also computed, which is usually difficult to catch. Vector splitting method is employed to exploit the merit of mesh free methods in the hyperbolic problems.
( Seong Hyop Kim ),( Tae Gyoon Yoon ),( Tae Yop Kim ),( Hae Kyoung Kim ),( Woo Sung Sung ) 대한마취과학회 2010 Korean Journal of Anesthesiology Vol.58 No.2
Anesthetic management for aortic arch aneurysm (AAA) surgery employing deep hypothermic circulatory arrest in a Jehovah`s Witness (JW) patient is a challenge to anesthesiologist due to its complexity of procedures and their refusal of allogeneic transfusion. Even in the strict application of intraoperative acute normovolemic hemodilution (ANH) and intraopertive cell salvage (ICS) technique, prompt timing of re-administration of salvaged blood is essential for successful operation without allogeneic transfusion or ischemic complication of major organs. Cerebral oximetery (rSO2) monitoring using near infrared spectroscopy is a useful modality for detecting cerebral ischemia during the AAA surgery requiring direct interruption of cerebral flow. The present case showed that rSO2 can be used as a trigger facilitating to find a better timing for the re-administration of salvaged blood acquired during the AAA surgery for JW patient. (Korean J Anesthesiol 2010; 58: 191-196)
회향(茴香) 추출물이 LPS를 처리한 Rat의 염증반응에 미치는 영향
허성규 ( Seong Kyu Heo ),이은 ( Eun Lee ),박원형 ( Won Hyung Park ),차윤엽 ( Yoon Yop Cha ) 한방재활의학과학회 2013 한방재활의학과학회지 Vol.23 No.2
Objectives :This study was performed to investigate the effects of Foeniculum Vulgare(FV) extract on the anti-inflammatory of lipopolysaccharide(LPS) exposed rats.Methods : We divided LPS exposed Sprague-Dawley rats into 4 groups. They were control group, feed with 100 mg/kg, 200 mg/kg, 300 mg/kg FV groups. They were administered for 6 weeks. We measured the concentration of plasma interleukin-1β(IL-1β), plasma interleukin-6(IL-6), plasma tumor necrosis factor-α(TNF-α), plasma interleukin-10(IL-10), the concentration of liver IL-1β, IL-6, TNF-α and IL-10.Results : 1. Plasma IL-1β, plasma IL-6 and plasma TNF-α concentration increased rapidly at 2hours after LPS injection and maintained high levels at 5hours after LPS injection. The concentration of these cytokines in the FV extract groups showed lower values than control group(P<0.05).2. The concentration of Plasma IL-10 in FV extract groups showed higher values than control group at all times(P<0.05). 3. The concentration of liver IL-1β and IL-6 in FV extract groups showed lower values than control group(P<0.05). The concentration of liver TNF-α in FV extract groups showed a tendency to decrease and that of liver IL-10 in FV extract groups showed a tendency to increase; however, these values showed no significantly different.Conclusions : In inflammatory response by LPS derivation, the FV gives positive effect.
증례보고 : Loeys-Dietz Syndrome 환아에서 대동맥판막 역류증 수술의 마취 관리
김성협 ( Seong Hyop Kim ),백승우 ( Seung Woo Baek ),권원경 ( Won Kyoung Kwon ),김덕경 ( Duk Kyung Kim ),윤태균 ( Tae Gyoon Yoon ),임정애 ( Jeong Ae Lim ),우남식 ( Nam Sik Woo ),김태엽 ( Tae Yop Kim ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.57 No.3
Loeys-Dietz Syndrome (LDS) is a recently described autosomal dominant aortic aneurysm syndrome with widespread systemic involvement. It is characterized by the triad of 1) arterial tortuosity and aneurysms, 2) hypertelorism, and 3) bifid uvula or cleft palate. A 12-year-old boy with LDS was scheduled to undergo correction of aortic valve regurgitation due to aortic annuloectasia. We report our clinical experiences of a case of LDS patient with brief review of related literatures and relevant anesthetic problems. (Korean J Anesthesiol 2009;57:371∼5)