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Encapsulating peritoneal sclerosis: case series from a university center
( Kyung Euk Hong ),( Ji Hea Bae ),( Yun In Jang ),( Heeyeon Jung ),( Jang Hee Cho ),( Ji Young Choi ),( Chan Duck Kim ),( Yong Lim Kim ),( Sun Hee Park ) 대한내과학회 2013 The Korean Journal of Internal Medicine Vol.28 No.5
Background/Aims: Encapsulating peritoneal sclerosis (EPS) is an often-fatal complication of long-term peritoneal dialysis (PD). We here report the clinical features of EPS in Korean PD patients from a single university center. Methods: The data were collected retrospectively from 606 PD patients at Kyungpook National University Hospital, between August 2001 and August 2011. The diagnosis of EPS was based on clinical signs and symptoms, and confirmed by radiological findings. Results: Eight patients (1.3%, four males) were diagnosed with EPS. The mean age of the patients was 48.5 years (range, 33 to 65). The mean duration of PD was 111.8 months (range, 23 to 186). All patients except for one had three or more episodes of peritonitis. Seven patients were diagnosed with EPS after stopping PD, and only one stayed on PD after initial diagnosis and treatment. Total parenteral nutrition and corticosteroids, in addition to tamoxifen therapy, were used to treat most of the patients, and one patient underwent surgery (adhesiolysis). The overall mortality rate was 50%. Conclusions: EPS is a serious, life-threatening complication in patients on longterm PD. To reduce the incidence and mortality rate of EPS, careful monitoring and early diagnosis is needed.
Assessing Geographic Origins of Green Teas Using Instruments
Jung Hyen Jang,Euk Seob Kim,Shu Yu Wu,Jian Liang Lu,Hui Ling Liang,Ying Ying Du,Chen Lin,Yue Rong Liang 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.5
Parameters of soluble solids, amino acids, catechins, and color difference of 24 green tea samples from China and Korea were determined. The levels of soluble solids, amino acids, total catechins, and infusion lightness in tea samples from Korea were higher than those from China. Concentrations of epigallocatechin galate and epigallocatechin in teas from China were higher than tea samples from Korea. Geographical origin of teas from the 2 countries was discriminated using parameters of infusion lightness, gallocatechin, and total catechins and applying principal component analysis.
한국군에서 실시하는 체력검정 전 검진에 대한 근거중심 권고안
김도영 ( Do Young Kim ),이학우 ( Hak Woo Lee ),장해동 ( Hae-dong Jang ),한승욱 ( Sung-euk Han ),하범만 ( Beomman Ha ) 국군의무사령부 2015 대한군진의학학술지 Vol.46 No.1
Objectives; To provide evidence based recommendation on pre-participation screening for ROK army fitness test Methods; Data sourse was identified using MEDLINE search and by manual search. Of the 288 abstracts that were screened from MEDLINE, we selected 3 guidelines on pre-participation screening. One guideline was identified from manual search. Results; Guidelines suggested that self administrated questionnaire is effective in risk stratification and screening high risk individuals. Two guidelines recommended treadmil test as a method for screening. However, the utility of treadmil test might be limited by possibility of false negative and false positive results. Regular physical activity was related with lower risk of cardiovascular events during the exertional physical activity. Conclusions; The optimal method of pre-participation screening is controversial. Further studies are needed to evaluate which method is relevant in pre-participation screening.
FCM 교량 가설 공법에서 임시 고정 강봉의 응력 변화 특성
강현억,박완신,장영일,김선우,윤현도,Hyun-Euk Kang,Wan-Shin Park,Young-Il Jang,Sun-Woo Kim,Hyun-Do Yun 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 논문집 Vol.27 No.3
In this study, the stress characteristics of temporary fixed steel rods were analyzed in the "temporary fixing system using internal prestressing tension", which is mainly applied to the construction of superstructures by FCM. It was difficult to confirm the changes in initial tensile force in this system because the steel rod was internally connected to the pier and the PSC BOX. Therefore, measurement was performed before and after the completion of each segment using an FBG sensor to measure the change in the micro length of the steel rod. The results of the analysis showed that 75% to 90% of the maximum vertical contraction of the steel rod that occurred until the completion of the cantilever segment occurred in the fixing ~ 1segment, and the maximum loss of initial prestressing force was 39%. Such excessive loss of tension force to 1 segment means that tension is needed to improve the precision of construction during the fixation, and re-tension is needed to secure stability for conduction of cantilever segments after the completion of 1segment. In the 2 ~ last segment, the stress of the steel rod decreased gradually, and in the summer, the decrease in stress tended to partially recover due to the increase in the length of the steel rod corresponding to the increase in the vertical volume of PSC BOX. The dominant factor in the stress change in 2~ last segment in this phenomenon is judged to be the change in the length of the steel rod according to the temperature. Unlike the change in length, the relaxation was 1.2-2.7%, which was mostly offset by the opposite stress corresponding to the temperature stress. Therefore, a plan was proposed to improve the internal stress, such as adjusting the fixation time.
강현억,박완신,장영일,김선우,윤현도,Hyun-Euk Kang,Wan-Shin Park,Young-Il Jang,Sun-Woo Kim,Hyun-Do Yun 한국구조물진단유지관리공학회 2023 한국구조물진단유지관리공학회 논문집 Vol.27 No.3
This study presents basic data on how to secure stability by analyzing the change in tensile force of steel rod and the inclination characteristics of PSC BOX in the "Temporary fixation system using internal prestressing tendon", which is mainly applied to construction of superstructures by FCM. To date, it has been difficult to confirm the changes in tension force of the steel rod and the inclination of the PSC BOX because the steel rod was installed vertically inside the pier and the PSC BOX. Therefore, measurement of the change in length of the steel rod and the displacement of PSC BOX were performed using a micro-measured FBG sensor. Comparisons of the calculated tensile force and the residual tensile force of the steel rod revealed that the safety factor decreased in all bridges. The cause was mainly identified to be the loss of tensile force in fixation~1segment, and countermeasures are suggested. The analysis of the inclination characteristics showed that the inclination increased with the segment progresses even in bridges with sufficient safety factor, and the difference before and after the segment was confirmed. In addition, the increase in inclination was related to the loss of tension force in the steel rod, and the stress on the opposite sides of the inclination was further reduced. It is believed that upward tensile force is generated in the steel rod on the opposite side of the inclined side due to the unbalanced moment, causing the difference in stress of the steel rod between the two sides.