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흡연이 Gastric Emptying Time에 미치는 영향
조민구(Min Koo Cho),정순영(Sun Young chung),김소연(So Yon Kim),문희승(Mun Hee Seung),김진석(Jin Suk Kim),이석호(Suk Ho Lee),이권전(Gwon Jun Lee) 대한소화기학회 1990 대한소화기학회지 Vol.22 No.2
The effect of cigarette smoking on gastric emptying was examined in 25 healthy volunteers by means of Tc-sulfur colloid labeled-solid meal. The volunteers underwent GET measurement two times: before smoking and after smoking two cigarettes. Before smoking, the each average of GET T25% T50%, T75%, was 18 +- 5.2, 40 +- 6.7, 90 +- 18.4 min and after cigarette smoking the each average of GET T25%, T50%, 75% was 30 +- 8.3, 64 +- 12.6, 114 +- 7.0 min. We concluded that cigarette smoking significantly delayed gastric emptying of a solid meal (p< 0.05).
산업현장 추락에 대한 기계학습 알고리즘 기반의 다집단 분류
구범모(Bum Mo Koo),김종만(Jong Man Kim),남예진(Ye Jin Nam),성동진(Dong Jin Sung),심재우(Jae Woo Shim),양수민(Su Min Yang),김영호(Young Ho Kim) 대한기계학회 2022 大韓機械學會論文集A Vol.46 No.3
본 연구에서는 웨어러블 관성센서를 사용하여 산업현장 추락에 대한 기계학습 기반의 다집단 분류를 시도하였다. 20명의 건강한 성인 남성을 모집하였으며, 15가지 non-FFH 동작과 5가지 low-hazard-FFH 동작 그리고 한 가지 high-hazard-FFH 동작을 3회씩 반복 측정하였다. 5개의 기계학습 기법(SVM, k-NN, LDA, QDA, MLP)에 대하여 two-class 분류성능과 three-class 분류성능을 비교하였다. 분석 결과 SVM이 two-class 분류와 three-class 분류에서 각각 99.5%와 98.2%의 가장 높은 정확도를 보였다. 또한, 세 가지 전처리 기법들(SMOTE, min-max 정규화, univariant feature selection) 역시 알고리즘 성능 향상에 기여함을 볼 수 있었다. In this study, a multi-class classification of industrial fall from height (FFH) based on machine learning was tried using a wearable inertial sensor. Twenty healthy adult males were recruited for the experiment. The experiment protocol consisted of 15 non-FFH, five low-hazard-FFH, and one high-hazard-FFH. Each motion was conducted three times repeatedly. Two-class classification performance and three-class classification performance were compared for five different machine learning techniques (SVM, k-NN, LDA, QDA, and MLP). As a result, SVM showed the highest accuracy of 99.52% and 98.25% in two-class classification and three-class classification, respectively. In addition, the three preprocessing techniques (SMOTE, min-max regularization, and univariant feature selection) contributed to the improvement of algorithm performance.
고등어(Scomber japonicus ) 치어의 마취제로서 Clove oil, MS-222 및 2-Phenoxyethanol의 평가
한석중 ( Seock Jung Han ),김경민 ( Kyong Min Kim ),최낙중 ( Nack Jung Choi ),구준호 ( Jun Ho Koo ),박충국 ( Chung Kug Park ),이원교 ( Won Gyo Lee ),지승철 ( Seung Chul Ji ) 한국수산과학회(구 한국수산학회) 2011 한국수산과학회지 Vol.44 No.6
The efficiency of clove oil, MS-222, and 2-phenoxyethanol was evaluated as anesthetics in juvenile Scomber japonicus . Stage A5 of anesthesia was assumed to be sufficient for conducting routine aquaculture procedures in less than 3 min, with recovery (stage R5) in less than 5 min. The lowest effective doses of the three anesthetics were 50 mg L-1 clove oil (anesthetic time of 71.3 s and recovery time of 167.0 s), 100 mg L-1 MS-222 (anesthetic time of 70.7 s and recovery time of 115.7 s), and 400 mg L-1 2-phenoxyethanol (anesthetic time of 86.7 s and recovery time of 95.0 s). Anesthetic times decreased with increasing doses for all three anesthetic agents, and fish anesthetized with clove oil exhibited the longest recovery times. After 30 min, the highest plasma cortisol and lactate levels were detected with the use of clove oil, whereas the lowest values were observed with 2-phenoxyethanol. In addition, high glucose levels were maintained during recovery with clove oil, but the treatments did not significantly differ. The most effective of the three anesthetic agents was 2-phenoxyethanol, although all were considered acceptable for use in cultures of juvenile Scomber japonicus
가토에서 Vecuronium bromide 의 용량에 따른 근육이완 효과
김동원,이동호,민경호,전세웅,유희구,김경헌,승익상,김교상,서정국 대한마취과학회 1987 Korean Journal of Anesthesiology Vol.20 No.6
The introduction of muscle relaxants was an epoch making event in the development of clinical anesthesia and their use has hecame essential to anesthesia practice. Vecuronium, one of the newest muscle relaxants, many advantages; it is .apid acting, non-accumulating, has minimals side reactions and is promptly antagonized by anticholinesterases. However, its pharmacological effect, like other conventional muscle relaxants depends upon the dose and is influenced br many factors including body temperature, blood flow, interaction with other drugs, antibiotics, diuretics and so forth, To obtain a dose·response relationship which is important for clinical use, the effect of the vecuronium in various doses on the neuromuscular block in rabbits was investigated. The results were as follows. 1) In the vecuronium 0.025 mg/kg group, maximal twitch depression was varied between 75 to 92% with a mean value of 84,9%. The spontaneous recovery index was 141.0 seconds (2.35 min). 2) In the vecuranium 7.75 mg/kg group, thmean maximum twitch depression and spontaneous recovery index were 98.4% and 218.6 seconds (3.64 min.) respectively. 3) In the vecuronium 7.1 mg/kg group, maximum twitch depression was 100% and the spontaneous recovery index was markedly prolonged to 627.8 seconds (10.35 min).
건축 리모델링 프로젝트 리스트 요인 분석을 통한 체크리스트 개발에 관한 연구 : Based on the Analysis of Risk Causes
최병호,구민경,박찬식 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)
Delay and cost overrun have happened continuously in remodeling projects and domestic constructions do not grasp about the risk's reason for cost and time. Therefore the study derives some risk causes which bring about delay and cost overrun through some documentary records and some interviews. And then it analyzes extracted items by statistical method and divides the items which is produced some consequences those are in beyond degree as a general area and as an important area. Finally, the research suggests the items to improve management of the duration and about checklist.
홍수민;박경식;박일권;손형래;구호석;고행일 인제대학교 2011 仁濟醫學 Vol.32 No.-
Hepatitis A is a mild, self-limiting disease of the liver, critical complications of which, such as acute kidney injury, are rare. Two cases of patients with acute hepatitis A who had an acute renal failure complication are reported herein. The first case is that of a 30-year-old man who showed up at the author’s hospital complaining of fever and myalgia. His laboratory tests upon his admission showed 9,520 lU/L of aspartate transaminase, 5,600 lU/L of alanine transaminase, 31.9 mg/dL of blood urea nitrogen, and 5.5 mg/dL of creatinine, and he was positive for the Anti-HAV IgM antibody. Upon his admission, supportive treatment was started, which included fluid therapy. The laboratory tests on the next day showed 53 mg/dL of blood urea nitrogen, 9.9 mg/dL of creatinine, and lower urine output per day. Renal replacement therapy was performed only once. A renal biopsy was performed and the result was Acute Tubular Necrosis (ATN). The patient recovered from acute renal failure without sequela. In the second case, a 35-year-old man complained of fever and abdominal pain. His laboratory tests upon his admission showed 8,570 lU/L of aspartate transaminase, 4,510 lU/L of alanine transaminase, 16 mg/dL of blood urea nitrogen, and 1.19 mg/dL of creatinine, and he was positive for the Anti-HAV IgM antibody. He experienced acute renal failure and recovered after two-time renal replacement therapy. The result of the renal biopsy was Acute Tubular Necrosis and C1q nephropathy.
폴리에스테르 섬유 감량시스템용 프로세서 타이트레이터 개발
조진호,이흥락,이종현,김명남,구성모,김무영,진경찬,유병희,강민수,김국진 경북대학교 센서기술연구소 1993 연차보고서 Vol.1993 No.-
폴리에스테르 섬유 감량시스템의 제어를 위해서는 처리조 내에서 감량되는 섬유가 목표 감량치에 도달했는지를 판단해 주는 장치가 필요하다. 본 연구에서는 가성소다용액의 초농도 및 섬유 감량 정도의 정확한 측정과 감량 종료시간의 산출 및 이에 따른 종료신호를 발생할 수 있는 폴리에스테르 섬유 감량기 전용의 자동적정장치를 개발하였다. To control caustic soda treatment system for the polyester fabric reduction, we need the device to determine that the fabric has been arrived target reduction value. In this study, we develope an automatic process titrator for the caustic soda treatment system. Major functions of the target titrating system are accurate measurements of the caustic soda concentration and then producing the end point signal for caustic soda treatment system.
몸 개념을 통해서 본 현대도시에서의 공공성에 관한 연구
최호준,구영민 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
This study departs from the recognition of the absence of public sphere in the present time, when the human beings have become alienated by the rapid growth of technology and the progression of the society. The study intends to reexamine the public through the discourse of 'body' with its extension through media. The argument is focused on investigating the territories extended by the changes in the recognition of body, reviewing the public sphere through the body and its extension and the relationship with the others, and exploring any applicabilities of the new concept of the public sphere into today's city and architecture.