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김대하 ( Dae-ha Kim ),이주한 ( Ju Han Lee ),김동우 ( Dongwoo Kim ),황수현 ( Suhyun Hwang ),강규호 ( Kyuho Kang ),구자설 ( Ja Seol Koo ) 대한소화기학회 2019 대한소화기학회지 Vol.73 No.1
A 49-year-old man visited the emergency room of Korea University Ansan Hospital with hematochezia starting the day before the visit. Recently, he was on anti-platelet medication due to hypertension. The patient had no definite symptoms other than hematochezia. Digital rectal exam was positive and laboratory tests showed severe anemia. Sigmoidoscopy was initiated and almost no fecal material was observed in the intestinal tract, allowing insertion into the cecum. Active bleeding from the appendiceal opening was noted. On abdominal CT, contrast enhancement was observed at the tip of the appendix. Under suspicion of acute appendicitis, we consulted with a surgeon. The patient underwent appendectomy with partial cecal resection. Pathologic examination revealed a diagnosis of appendix bleeding due to acute suppurative appendicitis. The patient had no further bleeding after surgery and was discharged in a stable state. Careful observation by the endoscopist is necessary for accurate diagnosis of lower gastrointestinal hemorrhage. Appendiceal hemorrhage is very rarely reported, but it has various pathophysiologies. CT scan is useful when appendiceal hemorrhage is confirmed by endoscopic findings. Surgical treatment was needed in almost all cases reported worldwide. If bleeding from the appendix is confirmed, surgical treatment should be considered for both therapeutic and diagnostic purposes. (Korean J Gastroenterol 2019;73:45-49)
김정인(Jeong-In kim),이명진(Myung-Jin Lee),설순욱(Soonuk Seol),이경희(Kyunghee Lee),김명철(Myungchul Kim) 한국정보과학회 2000 한국정보과학회 학술발표논문집 Vol.27 No.2Ⅲ
인터넷이 급속도로 발전해 가에 따라 그 활용 분야가 확장되고 보편화되어 가고 있다. 그 중 최근 대두되고 있는 분야가 바로 통신 서비스 분야이다. 이를 위해 등장한 것이 VoIP인데 IP위로 음성 데이터를 전송하는 것을 목적으로 한다. VoIP를 지원하기 위한 프로토콜로는 크게 ITU-T에서 제안한 H.323과 IETF에서 제안한 SIP를 들 수 있다. 인터넷을 이용한 통신 서비스를 위해서는 음성 데이터를 패킷 망에서 전송하는 기능 외에 터미널의 이동성을 지원하고, QoS를 보장할 수 있어야 한다. 이러한 측면에서 볼 때, 상기한 두 프로토콜은 음성 데이터를 패킷 망에서 전송하기 위한 다양한 기능과 서비스를 제공하고 있는 반면 호스트의 이동성 및 QoS 보장을 위한 방안에 있어서는 미비한 것이 현재 실정이다. 본 논문에서는 이러한 문제점의 해결을 위해, Mobile IP 위에서 동작하도록 확장된 자원 예약 프로토콜을 기반으로 하여 VoIP를 구현함으로써 호스트의 이동성과 QoS를 보장하도록 하는 방안에 대해 제안하고자 한다.
김서린 ( Seo Rin Kim ),류은경 ( Eun Kyung Rheu ),설영미 ( Young Mi Seol ),차동혁 ( Dong Heuck Cha ),이수진 ( Su Jin Lee ),윤연경 ( Yeun Kyung Yoon ),박순미 ( Soon Mi Park ),김형회 ( Heyung Hoe Kim ),류학선 ( Hak Sun Rheu ),안순철 대한내과학회 2007 대한내과학회지 Vol.73 No.3
목적: 최근 내원한 치료력이 없는 사람면역결핍바이러스 감염환자에서 전파된 내성바이러스의 빈도를 알아 보고자 하였다. 방법: 2005년 3월 1일부터 2006년 7월 30일까지 부산대학교병원에 처음 내원한 사람면역결핍바이러스 감염환자 중 항레트로바이러스제 치료력이 없는 환자들을 대상으로 하였다. HIV-1 유전형 내성 검사는 ViroSeq(TM) HIV-1 Genotyping System을 사용하였다. 유전형 내성은 International AIDS Society-USA panel의 2005년 합의 지침을 근거로 하여 한 가지 이상의 내성관련 돌연변이가 존재할 때로 정의하였으며, 유전적 아형은 pol 유전자 염기서열을 염기서열분석 프로그램(REGA HIV-1 Subtyping Tool-Version 2.0 과 NCBI Blast genotyping tool)을 이용하여 분석하였다. 결과: 대상 기간 중 42명의 환자에서 유전형 내성 검사가 시행되었다. 환자들의 평균 나이는 42세였으며 남자 37명(88%), 여자가 5명(12%)이었다. 정중 CD4 세포 수는 136/mm3, 평균 혈장 HIV-1 RNA 정량 검사 결과 역가는 4.98 log copies/mL이었다. 유전적 아형은 B형이 38명이었으며 CRF01 AE 2명, CRF02 AG 1명 및 A 형이 1명이었다. 42명 중 2 (4.8%)명에서 뉴클레오시드 역전사효소 억제제(NRTI)에 내성관련 돌연변이가 존재하였으며(V118I), 비뉴클레오시드 역전사효소 억제제 내성과 단백분해효소 억제제에 주 내성인 경우는 없었다. 42명 중 37명(88%)은 발견된 지 1년 미만이었으며, 이들에서 유전형 내성 빈도는 약 4.8%이었다. V118I를 제외하면 NRTI 내성도 없었다. 결론: 이전 치료력이 없는 사람면역결핍바이러스 감염 환자에서 유전형 내성 빈도는 약 4.8%였다. V118I를 제외하면 전파된 고도내성은 없었다. Background: The prevalence of HIV drug resistance mutations in drug-naive patients has been shown to differ with geographic origin. The purpose of this study is to assess the prevalence of transmitted antiretroviral drug resistance mutations in drug-naive patients in Korea. Methods: Genotypic resistance was determined by the use of the Viroseq Genotyping System in 42 antiretroviral treatment naive HIV-infected patients between March 2005 and July 2006. Transmitted drug resistance was estimated according to the IAS-USA 2005 definition, taking into account only major mutations in the protease and all mutations in the reverse transcriptase, including revertant mutations at codon 215. Results: The median age of the patients was 42 years and 37 (88%) were male. The median CD4+T cell count was 136/mm3 and the mean plasma RNA level was 4.98 log copies/mL. Among 42 patients studied, 37 (88%) were newly diagnosed patients. None of the patients were recent seroconverters; 38 patients (90%) were infected with subtype B and 4 patients were infected (10%) with the non-B subtype strains (2 patients with CRF01-AE 1 as CRF02-AG; 1 patient with subtype A). Of the 42 subjects tested, we found 2 (4.8%) mutations in NRTI (V118I), but did not find a mutation in NNRTI as well as in the PI region. Conclusions: The prevalence of transmitted antiretroviral drug resistance in drug-naive patients is still low in Korean patients.(Korean J Med 73:243-250, 2007)
지역 저소득층 아동의 우울증상과 주의력결핍-과잉행동증상에서 사회경제적 요소의 관련성
김설연(Seol Yeon Kim),하지현(Jee Hyun Ha),황원숙(Won Sook Hwang),유재학(Jaehak Yu) 대한소아청소년정신의학회 2009 소아청소년정신의학 Vol.20 No.2
Objectives: As the attention devoted to childrens mental health increases, medical costs and burdens mount as well. In the present study, we evaluated the association between socioeconomic status(SES) and major child psychiatric symptoms. Methods: The subjects of this study were children of recruited from a mental health screening program in the Seoul Sungbuk mental health center over the course of 3 months. To establish the SES of each child, we collected data about each childs medical insurance, years of parental education, household income, family structure and housing. 149 children & parents completed questionnaires including the Childhood Depression Inventory(CDI) and the Korean Attention Deficit Hyperactivity Disorder Rating Scale(K-ARS). Results: The mean K-ARS-P score was 12.1±11.1 and the suspected prevalence of ADHD was 20.8%(n=31). The mean cm score was 12.9±7.9, and the prevalence of suspected depression was 16.8%(25). Depressive symptoms and ADHD symptoms were both more severe than those observed in a previous epidemiologic study in Korea. Depressive symptoms were more closely associated with family SES status. Conclusion: SES status is one of the most important risk factors in the development of major child psychiatric symptoms. In our study we found that depressive symptoms in particular were most tightly associated with psychosocial factors. Evaluation of the risk factors, early screening and intervention for low SES children would be valuable mental health management tactics to implement in a community mental health system.
김설빔(Seol Bim Kim),안병운(Byoung Woon Ahn),이성환(Seoung Hwan Lee) 대한기계학회 2009 大韓機械學會論文集A Vol.33 No.5
In configuring an automated polishing system, a monitoring scheme to estimate the surface roughness is necessary. In this study, a precision polishing process, magnetic abrasive finishing (MAF), along with an inprocess monitoring setup was investigated. A magnetic tooling is connected to a CNC machining to polish the surface of stavax(S136) die steel workpieces. During finishing experiments, both AE signals and force signals were sampled and analysed. The finishing results show that MAF has nano scale finishing capability (upto 8㎚ in surface roughenss) and the sensor signals have strong correlations with the parameters such as gap between the tool and workpiece , feed rate and abrasive size. In addition, the signals were utilized as the input parameters of artificial neural networks to predict generated surface roughness. Among the three netwoks constructed -AE rms input, force input, AE+force input- the ANN with sensor fusion (AE+force) produced most stable results. From above, it has been shown that the proposed sensor fusion scheme is appropriate for the monitoring and prediction of the nano scale precision finishing process