http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Seong-Yeon Yoo,Jin-Hyuck Kim,Kyu-Hyun Han 대한기계학회 2010 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.24 No.4
In closed wet cooling towers, the heat transfer between the air and external tube surfaces can be composed of the sensible heat transfer and the latent heat transfer. The heat transfer coefficient can be obtained from the equation for external heat transfer of tube banks. According to experimental data, the mass transfer coefficient was affected by the air velocity and spray water flow rate. This study provides the correlation equation for mass transfer coefficient based on the analogy of the heat and mass transfer and the experimental data. The results from this correlation equation showed fairly good agreement with experimental data. The cooling capacity and thermal efficiency of the closed wet cooling tower were calculated from the correlation equation to analyze the performance of heat exchanger for the tower.
( Seong Wook Heo ),( Joong Goo Kwon ),( Chang Hyeong Lee ),( Ho Gak Kim ),( Eun Young Kim ),( Kyoung Chan Park ),( Jung Il Ryu ),( Dong Uk Ju ),( Byung Seok Kim ),( Ji Min Han ),( Joon Hyuck Choi ),( 대한소화기학회 2007 SIDDS Vol.9 No.-
Background/Aims: Colorectal cancer (CRC) is one of the leading causes of cancer death in Korea. Since CRC is preventable by colonoscopy with polypectomy, risk assessment tool is necessary for appropriate screening recommendation. Recently, some researchers of Harvard Medical School suggested a simple equation to obtain risk score for CRC. The score can be calculated as follows: risk score=(2: age 50-59 years)+(4: age 60-69 years)+(6: age≥70 years)+(1: BMI≥25-30 kg/m2)+(2: BMI≥30 kg/m2)+(1: history of past or current smoking)+(1: alcohol use>weekly). We tested the applicability of this scoring system in Korean population to verify the propriety of future prospective study. Methods: We retrospectively analyzed the results of colonoscopy done for health screening in men between April 2003 and August 2007 in Daegu Catholic Medical Center. Among 1845 cases, colorectal polyp was found in 665 cases. Risk scores were obtained using the equation in 654 eases with polyp. We evaluated the relationship between the incidence of high risk polyp (HRP) or CRC and the risk score. HRP was defined as more than 10 mm in size or severe dysplasia or villous component of pathology or multiple polyps. Results: Among 654 cases, HRP or CRC was found in 193 cases. The incidence of HRP or CRC had positive association with the risk score (P<0.05). The incidence of HRP or CRC also had positive association with the patient age (P<0.05) and age was a major influencing factor for the incidence. Within the same age group, there was no definite association between the incidence of HRP or CRC and the risk score (P<0.05). None of smoking history, alcohol use, or body mass index was an meaningful predictor of HRP or CRC in the same age group. Conclusions: The patients with higher risk score showed higher incidence of HRP or CRC. But age was the only significant factor having discriminative ability. We could not validate the risk scoring system suggested by Harvard group in this study. That might be partly explained by ethnic difference. Because We included not only CRC but also HRP in the analysis, that might be another reason. We hoped this easy risk scoring system can give us more information other than age to select men with higher risk of CRC but it was apparently disappointing. There is a need to develop our own predictive model for the incidence of colon cancer in Korea.
Han, Ji H.,Shin, Hanho,Rho, Jun G.,Kim, Jung‐,Eun,Son, Dong H.,Yoon, Juhwan,Lee, Yong J.,Park, Jung‐,Hyuck,Song, Byung J.,Choi, Chang‐,Sik,Yoon, Seul G.,Kim, Il Y.,Lee, Eun K.,Seong, Blackwell Publishing Ltd 2018 DIABETES OBESITY AND METABOLISM Vol.20 No.9
<P>Conclusions: These results suggest that peripheral CB1R blockade improves obesity-induced insulin resistance by suppressing adipose tissue inflammation via the NLRP3 inflammasome.</P>
( Joon Seong Ahn ),( Dong Hyun Sinn ),( Geum Youn Gwak ),( Jong Man Kim ),( Choon Hyuck Kwon ),( Jae Won Joh ),( Yong Han Paik ),( Moon Seok Choi ),( Joon Hyeok Lee ),( Kwang Cheol Koh ),( Seung Woon 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-
Background: The degree of steatosis of donated liver is one of decisive factors that determine graft function in recipient and recovery of remnant liver in living donor. Hence, the assessment of hepatic steatosis is a critical element to judge donor compatibility. We evaluated the prevalence and predictors of steatosis among liver donors who had no evidence of fatty liver on screening ultrasonography (US-negative). Methods: Degree of hepatic steatosis was reviewed for 492 US-negative liver donors (age: 30.1 ± 9.9, male: 301 (61.2%)). Clinical and laboratory variables were analyzed to identify predictors for steatosis. Results: The prevalence of severe (≥ 60%), moderate (30 ∼ 59%), mild (5 ∼ 29%) and no steatosis (<5%) were 0.6% (3/492), 10.8% (53/492), 39.6% (195/492) and 49.0% (241/492), respectively. In multivariate analysis, BMI [kg/㎡, OR (95% CI): 1.15, p = 0.021] and serum triglyceride level [mg/dl, OR (95% CI): 1.01, p = 0.004] were independent factors associated with steatosis ≥ 30%. The optimal cutoff for steatosis ≥ 30% by receiver operator curve analysis was 23 kg/㎡ for BMI and 88 mg/dl for triglyceride. Steatosis ≥ 30% was significantly more prevalent for liver-donors with high BMI (15.2% vs. 9.0% for BMI ≥ 23 vs. < 23 kg/m2, p = 0.034) and with high serum triglyceride level (15.5% vs. 8.7% for triglyceride ≥ 88 vs. < 88 mg/dl, p = 0.021). Based on these two parameters, the prevalence of steatosis ≥ 30% was 6.6%, 13.0% and 28.6% for none, one and both risk factors, respectively. Conclusions: About a half of US-negative liver donors have steatosis ≥ mild degree and one-tenth of them has ≥ moderate degree. USG assessment is not sufficient to exclude donors with significant steatosis especially for those with high BMI and triglyceride level, and thus, pre-operative liver biopsy should be positively considered for them.