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( Sung Chul Choi ),( Beom Jin Kim ),( Poong Lyul Rhee ),( Dong Kyung Chang ),( Hee Jung Son ),( Jae J. Kim ),( Jong Chul Rhee ),( Soon Im Kim ),( Young Sil Han ),( Ki Hyeon Sim ),( Seok Nam Park ) 대한소화기기능성질환·운동학회 2011 Gut and Liver Vol.5 No.1
Background/Aims: Although controversial, probiotics and dietary fiber are commonly used for patients with irritable bowel syndrome (IBS). We evaluated the effects of multistrain probiotics on the symptoms of IBS to determine whether the addition of dietary fi ber had an additive effect on constipation-predominant IBS. Methods: A total of 142 participants who met the Rome III criteria were recruited and randomized into a control group or a test group. Participants in the control group received multistrain probiotic fermented milk with Streptococcus thermophilus, Lactobacillus acidophilus and Bifi dobacterium infantis; the participants in the test group received the same probiotic fermented milk mixed with dietary fi ber such as sea tangle extracts, radish extracts and glasswort extracts. The patients were treated for four weeks. Results: Most of the symptoms of IBS, with the exception of fl atulence, stool consistency, and frequency of defecation, signifi cantly improved in both groups. In the analysis of IBS subtypes, especially constipation-predominant IBS, the frequency and duration of defecation and straining at stool were improved more in the test group than in the control group. Conclusions: Dietary fiber had additive benefits for the symptoms of constipation, especially in constipationpredominant IBS. (Gut Liver 2011;5:22-28)
Han, Bong-Deok,Lee, Sang-Lyul,Park, Moon-Hwan,Chae, Quae Korean Society for Biochemistry and Molecular Biol 1995 Journal of biochemistry and molecular biology Vol.28 No.6
In our previous studies (Chae et al., 1990; Chae et a1., 1993), we found that a phytochrome signal was clearly connected with the change in cytosolic free $Ca^{2+}$ concentration ($[Ca^{2+}]_i$) in oat cells. It was determined that the $[Ca^{2+}]_i$ change occured both by mobilization out of the intracellular $Ca^{2+}$ store and by influx from the medium. The specific aim of this work is to elucidate the processes connecting $Ca^{2+}$ mobilization and influx. The cells treated with thapsigargin (increasing $[Ca^{2+}]_i$ by inhibition of the $Ca^{2+}$-ATPase in the calcium pool) in the presence of external $Ca^{2+}$ showed the same increasing pattern (sustained increasing shape) of $[Ca^{2+}]_i$ as that measured in animal cells. Red light irradiation after thapsigargin treatment did not increase $[Ca^{2+}]_i$ These results suggest that thapsigargin also acts specifically in the processes of mobilization and influx of $Ca^{2+}$ in oat cells. When the cells were treated with TEA ($K^+$ channel blocker), changes in $[Ca^{2+}]_i$ were drastically reduced in comparison with that measured in the absence of TEA. The results suggest that the change in $[Ca^{2+}]_i$ due to red light irradiation is somehow related with $K^+$ channel opening to change membrane potential. The membrane potential change due to $K^+$ influx might be the critical factor in opening a voltage-dependent calcium channel for $Ca^{2+}$ influx.
고속 네트워크 환경에서 TCP / IP 프로토콜 성능 측정 및 분석
박한규(Han Kyu Park),Hessa Sultan Al-Jaber(Hessa Sultan Al-Jaber),이민석(Minsuk Lee),민상렬(Sang Lyul Min),김종상(Chong Sang Kim) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅲ
최근의 통신망 기술의 발전은 기가 비트 통신의 시대를 열었다. 그러나 사용자 측면에서는 향상된 대역폭을 충분히 활용하지 못하고 있는데, 이는 종단 시스템에서 데이터를 처리하는 과정에서 병목현상이 발생하기 때문이다. 이러한 이유로 통신 소프트웨어를 최적화할 필요성이 대두되고 있다. 본 논문에서는 통신 프로토콜을 정략ㅇ적으로 분석하여, 병목현상의 주요 원인을 확인하는 작업을 수행하였다. 실험을 수행하기 위해서 리눅스를 사용하는 두 대의 팬티엄 PC를 저속 네트워크인 이더넷(Ethernet)과 고속 네트워크인 미리넷(Myrinet)으로 동시에 연결을 하였다. 두 가지 환경을 비교함으로써 네트워크의 속도가 빨라짐에 따라 병목현상을 발생시키는 지점이 어떠한 양상으로 이동하는 가도 관찰할 수 있다. 통신 프로토콜에 대한 수행시간 측정은 펜티엄에서 제공하는 MSR (Machine Specific Register)을 이용하였다.
임성수(Sung-Soo Lim),한정희(Jung Hee Han),김지홍(Jihong Kim),민상렬(Sang Lyul Min) 한국정보과학회 2000 정보과학회논문지 : 시스템 및 이론 Vol.27 No.10
논문에서는 한 번에 여러 개의 명령어를 이슈할 수 있는 다중 이슈 프로세서(in-order, multiple-issue processors)에 대해 최악 실행시간을 분석하는 기법을 제시한다. 명령어들의 이슈 행태를 분석하기 위해서 명령어들 사이의 의존성 관계를 표현하는 IDG(Instruction Dependence Graph)라고 하는 자료구조를 사용한다. 이 자료구조로부터 각 명령어들의 이슈간 거리 범위를 구하고, 프로그램의 계층적인 분석 과정에서 점차로 더 정확한 이슈간 거리 범위로 갱신한다. 프로그램의 최악 실행시간은 최종적으로 얻어진 프로그램 전체에 대한 IDG를 분석하여 얻은 명령어들의 이슈간 거리 범위로부터 계산한다. 제안하는 기법을 구현한 시간 분석기를 사용하여 실험한 결과, 논문에서 사용한 다중 이슈 프로세서 모델에 대해서 정확하게 다중 이슈 행태를 분석할 수 있었다. In this paper, we present a worst case timing analysis technique for in-order, multiple-issue processors. In the proposed technique, timing information for each program construct is represented by a directed acyclic graph (DAG) that encodes dependences among nodes (i.e., instructions). From this information, we calculate for each pair of instructions distance bounds between their issue times. The worst case execution time of a program is calculated by progressively refining the distance bounds through hierarchical analysis over the program's syntax tree. Our experimental results show that the proposed technique can predict the worst case execution times for in-order, multiple-issue processors as accurately as for simpler RISC processors.
만성 특발성 변비증으로 수술을 시행한 환자의 임상적 고찰
이한철(Han Cheol Lee),홍성노(Sung No Hong),이준행(Jun Haeng Lee),이선영(Sun Young Lee),손희정(Hee Jung Son),김영호(Young Ho Kim),이풍렬(Poong Lyul Rhee),김재준(Jae J . Kim),이종철(Jong Chul Rhee),최규완(Kyoo Wan Choi),김정한(Jung Han 대한소화기기능성질환·운동학회 2001 Journal of Neurogastroenterology and Motility (JNM Vol.7 No.2
N/A Background: In patients with intractable constipation who are poorly responsive to medical treatments, surgical treatments may be considered. However, how preoperative physiologic evaluations contribute to some information in making surgical decision is not established. The aim of this study was to evaluate the outcome of surgical treatment in patients with severe constipation who underwent preoperative functional study. Methods: Preoperative functional evaluation included colon transit time test, defecography, scintigraphic gastric emptying time test, anorectal manometry and balloon expulsion test. Nine patients with a mean age of 48 years old were taken total colectomy with ileorectal anastomosis. Slow colonic transit was demonstrated in each case. All patients were available for follow-up, with median time of 35 (range; 10-55) months. Results: Seven patients (78%) were satisfied with outcome, improved the quality of life, and felt the operation was valuable despite of residual symptoms. Two patients did not experience symptom improvements. Six of seven colonic inertia or combined spastic pelvic floor syndrome patients had a satisfactory outcome. In contrast, one of two patients with generalized intestinal dysmotility did not show any improvement after surgery. Conclusions: Preoperative physiologic testing reliably identified patients with severe constipation who might have benefits from surgery. If cases are carefully diagnosed and selected, the surgical treatment may be highly effective in alleviating symptoms. (Korean Journal of Gastrointestinal Motility 2001;7:204-215)
Bong Deok Han,Sang Lyul Lee,Moon Hwan Park,Quae Chae 생화학분자생물학회 1995 BMB Reports Vol.28 No.6
In our previous studies (Chae et al., 1990; Chae et ol., 1993), we found that a phytochrome signal was clearly connected with the change in cytosolic free Ca^(2+) concentrntion ([Ca^(2+)]_i) in oat cells. It was determined that the [Ca^(2+)]_i change occured both by mobilization out of the intracellular Ca^(2+) store and by influx from the medium. The specific aim of this work is to elucidate the processes connecting Ca^(2+) mobilization and influx. The cells treated with thapsigargin (increasing [Ca^(2+)]_i by inhibition of the Ca^(2+)-ATPase in the calcium pool) in the presence of external Ca^(2+) showed the same increasing pattern (sustained increasing shape) of [Ca^(2+)]_i as that measured in animal cells. Red light irradiation after thapsigargin treatment did not increase [Ca^(2+)]_i. These results suggest that thapsigargin also acts specifically in the processes of mobilization and influx of Ca^(2+) in oat cells. When the cells were treated with TEA (K^+ channel blocker), changes in [Ca^(2+)]_i were drastically reduced in comparison with that measured in the absence of TEA. The results suggest that the change in [Ca^(2+)]_i due to red light irradiation is somehow related with K^+ channel opening to change membrane potential. The membrane potential change due to K^+ influx might be the critical factor in opening a voltage-dependent calcium channel for Ca^(2+) influx.
연안침식 저감을 위한 경성공법 및 연성공법 배치설계 체계
이욱한(Uk Han Lee),한상우(Sang Woo Han),이정렬(Jung Lyul Lee) 한국연안방재학회 2020 한국연안방재학회지 Vol.7 No.4
Currently, in the Republic of Korea, many coastal improvement projects have been carried out, but the layout design of erosion mitigation facilities has not been properly considered, and the loss of beach sand is becoming more serious due to the development of hinterland. Therefore, it is necessary to establish goals (such as target shoreline) for managing the coast from the technical aspect and to introduce such a design concept into practice. If a layout design system for erosion mitigation facilities is adopted at the design stage, it could clearly check whether the set goals are met or not by the coastal improvement projects to be completed later. In this study, a detailed layout design system for erosion mitigation facilities has been suggested to actively utilize the factual survey data on coastal erosion having been carried out over the last decade and to devise improvement measures for the current layout design of coastal erosion mitigation facilities.
한국인에서의 만성적 궤양을 동반하는 대장염에 대한 임상적 고찰
이풍렬,윤한두,김나영,정숙향,유권,정현채,이효석,윤용범,송인성,최규완,김정룡,최상운 대한내과학회 1990 대한내과학회지 Vol.38 No.3
The purpose of this study is to compare the differences of the symptoms, signs and laboratory findings among colitis with chronic ulceration, such as ulcerative colitis, Behcet's colitis, tuberculous colitis and Crohn's disease in Korea. Were studied in Seoul National University Hospital from August 1982 to Oocober 1988. Forty-two cases of ulcerative colitis, 23 cases of Behcet's colitis, 53 cases of tuberoulous colitis and four cases of Crohn's disease were analyzed in terms of age, sex, symptomatology, laboratory findings and consequence of treatment. 1) The sex ratio of ulcerative colitis, Behcet's, colitis tuberculous colitis and Crohn's disease was 1 : 1.63, 4.74 : 1, 1 : 1. 30, and 3 : 1, respectively, and the mean age was 36.1, 34.3, 33.4, 22.5 years, respectively. 2) The duration of symptoms in tuberculous colitis was significantly shorter than in other diseases. 3) The items of symptoms and signs showed that significant differences were rectal bleeding, diarrhea, weight loss, tenesmus, oral ulcer, skin lesion and genital ulcer. 4) The items of laboratory findings revealed that significant differences were anemia, increased ESR, hypoalbuminemia and the evidenoe of tuberculous lesion on chest X-ray. 5) In view of the anatomical distribution of the lesions, the rectums of all the cases were involved in ulcerative colitis. In most cases of Behcet's colitis and tubercuious colitis, the right colon, including the cecum and the ileum, was involved. In Crohn's disease, the ileum and the jejumum were frequently involved. 6) From a discriminant analysis, we could find several items that differentiated the four diseases. There were rectal bleeding, diarrhea, oral ulcer, hypoalbuminemia and evidence of tuberculosis on chest X ray.