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국내 평가 가이드 라인 제시를 위한 전동식 부항기의 특성 조사에 관한 연구
이승호,김은정,신경훈,남동우,강중원,이승덕,이혜정,이재동,김갑성,Yi, Seung-Ho,Kim, Eun-Jung,Shin, Kyung-Hoon,Nam, Dong-Woo,Kang, Jung-Won,Lee, Seung-Deok,Lee, Hye-Jung,Lee, Jae-Dong,Kim, Kap-Sung 대한침구의학회 2010 대한침구의학회지 Vol.27 No.1
Objectives : The mechanical properties of Korean electric cupping systems are studied via experimental measurements. The study aimed at establishing the fundamentals of industrialization and systemization of oriental medicine device industry, as well as improving the quality of life for many Koreans. Methods : We reviewed the studies on traditional cupping as well as modern one to fine necessary factors for electric cupping systems. To characterize the mechanical properties of Korean electric cupping systems, we measured the pressure characteristics of commercially available electric cupping system by using an automatic pressure acquisition system and a standard cup. The pumping capability was checked at 40 seconds, and the stability of the suction cup was checked at 600 seconds. We also acquired the noise level of each system in clinical setting. To check the portability of each system, we also measured its physical dimensions. We scrutinized system manuals provided by the system manufacturers. Results : It took less than 5 second to reach the pressure if the connection between the air hose and the vacuum valve of the cupping system was secure. Pressure diminished to no more than 10% for 600s for all systems. Noise levels were 55~70 dB. Increase in pressure was too fast to control for a designated vacuum level except for one product. Conclusions : The Pumping ability of the systems is impressive and reliable. Pressure retention ability of each cup is quite reliable and reproducible. Therefore, their mechanical performances were worthy of recommendation. Some of them had noise level higher than 60 dB and they were bothersome. It was also suggested that the control for low to middle pressure needed to be accomplished by the cupping system.
큰 두위를 주소로 내원하여 헌터 증후군으로 일찍 진단된 증례 1례
이승호,박우성,이영석,유지숙,Lee, Seung Ho,Park, Woo Sung,Lee, Young Seok,Yu, Jeesuk 대한유전성대사질환학회 2014 대한유전성대사질환학회지 Vol.14 No.2
A 25-month-old boy was referred to the hospital due to large head detected on routine physical examination. At visit, dysmorphic facial appearances, including broad nose, prominent forehead, and coarse face, were noted. Nasal obstruction with nasal voice, prominent adenoids, and bilateral middle ear effusions were detected. His abdomen was distended, and liver and spleen were palpated about 3 finger and 2 finger breadths, respectively. He was operated for bilateral inguinal hernias. The motion of both elbow joints was mildly limited on supination and pronation. Urinary level of glycosaminoglycan was elevated and the enzyme activity of iduronate sulfatase in leukocytes was decreased. The mutational analysis of the gene iduronate 2-sulfatase (IDS) revealed c.263G>A (p.Arg88His) mutation. His developmental scale showed delayed development and there was cardiac valvular involvement (tricuspid regurgitation and mitral valve prolapse). After the diagnosis of Hunter syndrome, enzyme replacement therapy started on a weekly basis without progression of any clinical features. Here we report a case of early diagnosed Hunter syndrome detected by large head on routine examination. Thus, it is important to associate Hunter syndrome in the patient with large head especially, if there is the history of bilateral inguinal hernia and prominent adenoids to increase the possibility of early diagnosis and treatment.
수소화처리가 다결정 $\textrm{Si}_{1-x}\textrm{Ge}_{x}$박막의 전기적특성 및 표면거칠기에 미치는 영향
이승호,이규용,소명기,김교선,Lee, Seung-Ho,Lee, Gyu-Yong,So, Myeong-Gi,Kim, Gyo-Seon 한국재료학회 1998 한국재료학회지 Vol.8 No.1
RTCVD법으로 증착된 다결정 Si$_{1-x}$Ge$_{x}$박막에서 Ge조성 증가에 따른 결정립크기변화가 표면거칠기 및 cluster크기에 미치는 영향에 대해 알아본결과, Ge조성 증가에 따라 결정립크기가 증가했으며 증가된 결정립에 의해 Cluster 크기와 표면거칠기값(RMS)들이 증가함을 알 수 있었다. 또한 증착된 다결정 Si$_{1-x}$Ge$_{x}$박막을 RF power와 온도변화에 따라 Ar/H$_{2}$플라즈마를 이용한 수소화처리를 행하여, 수소화 효과와 표면거칠기값 그리고 비저항값 변화에 대해 조사하였다. 수소화처리 후 cluster크기와 표면거칠기값은 기판온도와 RF power 증가에따라 감소함을 알 수 있었으며 특히 기판온도 30$0^{\circ}C$에서는 비저항값이 상당히 증가하였다.
이승호,허신,Lee, Seung-Ho,Heu, Shin 한국정보처리학회 1997 정보처리학회논문지 Vol.5 No.1
본 논문은 SRT 시스템에서 고정 우선순위 정책을 사용하는 쓰레드가 기존보다 더 빠른 응답시간과 반환시간을 갖도록 하기 위한 개선된 스케쥴링 모델과 알고리즘을 제시하였다. 보조 실행 큐를 첨가하여 고정 우선순위 정책을 사용하는 쓰레드의 빠른 실행 및 에이징(aging)에 사용하였다. 시뮬레이션을 통하여 기존의 방식과 비교하였 으며 그 결과, 새로 제안된 모델의 경우, 고정 우선순위 쓰레드의 반응시간과 반환시 간이 기존보다 향상되었다. This paper proposes an improved scheduling model and algorithm which threads in the fixed-priority policy have faster response time and turnaround time than existing ones in SRT system. Sub run queue is added into the system and is used for the quick execution and aging of threads in the fixed-priority policy. Using simulation two method are compared. The results shows that the new scheduling model gets threads in the fixed-priority policy to run faster than existing ones.
소아 Henoch-Schölein purpura에서 전환성장인자-β 프로모터유전자의 유전학적 다형성과 신장침범의 관련성
이승호,지화영,김황민,예병일,Lee, Seung Ho,Jee, Hwa Young,Kim, Hwang Min,Yeh, Byung Il 대한소아청소년과학회 2008 Clinical and Experimental Pediatrics (CEP) Vol.51 No.5
Purpose : Several cytokines play important roles in the inflammatory process of Henoch-$Sch\ddot{o}lein$ Purpura (HSP). It is likely that transforming growth $factor-{\beta}$ ($TGF-{\beta}$) is involved in the pathogenesis of HSP. The purpose of this study is to investigate whether $TGF-{\beta}$ promoter polymorphism is associated with the renal involvement of childhood HSP. Methods : Thirty-four patients younger than 15 years, who had been diagnosed with HSP, as well as 27 controls, were examined. Patients and controls were genotyped for $TGF-{\beta}$ C-509T by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results : The T allelic frequencies in patients and controls showed no difference (45% vs. 48.8%). No allele or genotype differences between the group of HSP group and control group were observed. The frequencies of $TGF-{\beta}$ 509 genotypes TT, TC, and CC were no different between patients and controls (26% vs. 22%). The TT genotype of polymorphism of the $TGF-{\beta}$ C-509T gene had no relation to the susceptibility of children to HSP and renal involvement in HSP. Conclusion : $TGF-{\beta}$ T allele may not be related to the susceptibility of children to HSP. The TT genotype of polymorphism of the $TGF-{\beta}$ C 509T gene does not appear to have an influence on renal involvement in childhood HSP. 목 적 : HSP는 소아에서 흔한 전신성 혈관염으로 명확한 병인은 밝혀지지 않았으나 염증성 시토카인들이 발병기전에 관여하는 것으로 여겨지며 그중 전환성장인자-${\beta}$가 HSP의 발병기전과 연관이 있는 것으로 보여진다. 본 연구의 목적은 전환성장인자-${\beta}$ 프로모터 유전자의 유전학적 다형성과 HSP 환자에서의 신장 침범과의 관련성을 조사하고자 하는 것이다. 방 법 : 2003년 6월부터 2005년 6월까지 연세대학교 원주기독병원 소아과를 방문하여 HSP로 진단받은 15세 이하 환아 34명과 같은 기간 본원을 방문한 정상 대조군 27명을 대상으로 하였다. 전환성장인자-${\beta}$ 다형성 유전자 표현형은 PCR-RFLP로 환자군과 대조군에서 시행하였다. 결 과 : HSP 환자군과 대조군에서 전환성장인자-${\beta}$ 프로모터 유전자 다형성의 T 대립유전자 빈도는 각각 45%, 48.8% 였으며, T 대립유전자 빈도 간에 통계학적으로 유의한 차이는 없었다(P=0.37). TT 유전자 표현형도 환자군과 대조군에서 빈도의 차이가 없었고(26% vs. 22%, P=0.37), 환자군 중 신장 침범에 있어서도 유의한 차이가 나타나지 않았다(29% vs. 20%, P=0.77). 결 론 : 전환성장인자-${\beta}$ 유전자 다형성의 TT 표현형과 T 대립유전자의 빈도가 HSP 환아의 질병 감수성이나 신장침범과의 연관성을 보임을 관찰할 수 없었으며 HSP 환자들에게 있어서 보다 큰 집단을 대상으로 하는 연구가 전환성장인자-${\beta}$와 신장침범 및 질병 감수성과의 연관성을 명확히 하는데 필요할 것으로 보인다.
이승호,고두열,정원석,김경수,김수현,Lee, Seung-Ho,Koh, Doo-Yeol,Jung, Won-Suk,Kim, Kyoung-Soo,Kim, Soo-Hyun 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.5
In this paper, we propose the direction of development for EOD robot. We collected and analyzed the opinions of EOD teams. In order to verify the opinions, we conducted QFD(Quality Function Deployment) analysis. Based on the QFD analysis, we work out the priority of EOD robot development. And we establish the goal of development(target system) and suggest the development direction of EOD robot on each issue.
이승호,박희영,이상근,용성권,음철훈,Lee, Seung Ho,Park, Hui Yeong,Lee, Sang Geun,Yong, Seong Gwon,Eum, Cheol Hun Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.6
Split-flow thin (SPLITT) cell Fractionation(SF) is a technique that allows separation of particulates and macromolecules into two fractions. A gravitational SF(GSF) system is constructed and tested for its applicability for separation of dust and ground water particulates. When tested with polystyrene latex particles, experimental data were in good agreements with theory. The 9.8 and 21.4㎛ polystyrene particles were successuflly separated in a continuous mode, where the mixture is continuously fed into the GSF channel allowing separation in a large sacle. The GSF system is successfully applied to continuous separation of dust and ground water particels based on the sedimentation coefficient, which is closely related to the particle size. The separations were confirmed by microscopy and energy-dispersive X-ray (EDX) analysos.