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쥐(rats)의 full-thickness skin grafts에 대한 hyperbaric oxygen과 α-tocopherol의 효과
김종수,김충희,김곤섭,하대식,박성근,김양미,Kim, Jong-shu,Kim, Chung-hul,Kim, Gon-sup,Hah, Dae-sik,Park, Sun-gun,Kim, Yang-mi 대한수의학회 2000 大韓獸醫學會誌 Vol.40 No.3
To document that effects of hyperbaric oxygen(HBO) and ${\alpha}-tocopherol$ on full-thickness skin grafts in rat, we performed full-thickness skin grafts bilaterally on each rats. The HBO-treated rats were received HBO twice daily for 90 minutes at 2 ATA. Surgical control rats were not treated with HBO. ${\alpha}-tocopherol$ treated rats were received the agent via oral gastric tube daily for 3 days preoperative and a fourth dose 1 to 2 hours postoperative. HBO plus ${\alpha}-tocopherol$ treated rats were received HBO and ${\alpha}-tocopherol$ as mentioned above. Biopsy specimens were taken from each rat at the time of grafting and on days 2, 4, 7, 10, 14, 21, and 28, then were processed for tissue-concentration of total glutathione(GSHt), oxidized/reduced glutathione level, and thiobarbituric acid-reactive substance(TBARS) levels. The percentage of viable graft on day 10 ranged from 67 to 93%, and was not significantly different among the each other groups. The percentage of viable graft were, however, higher in HBO plus ${\alpha}-tocopherol$ treated rats(78.6%) than in HBO alone treated rats(59.1%), ${\alpha}-tocopherol$ alone treated rats(66.7%) and surgical control rats(58.2%). TBARS concentration had a significant increase from preoperative concentration at day 2, and peak concentration at day 4(p<0.01). Concentration then decreased to preoperative concentration at day 28. GSHt concentration of free skin graft had a similar patteren of change in four groups and decreased significantly from preoperative concentration at day 2, returning to preoperative concentration by day 7(surgical control, HBO-treated, and ${\alpha}-tocopherol-treated$, alone) and 28(HBO plus ${\alpha}-tocopherol-treated$). Percentage of the concentration of reduced glutathione decreased in surgical control, HBO-treated and, ${\alpha}-tocopherol-treated$(p<0.05), and HBO plus ${\alpha}-tocopherol-treared$(p<0.01) on day 7 after surgery, whereas the concentration of oxidized increased significantly in HBO-treated(p<0.05), ${\alpha}-tocopherol-treated$(p<0.05), and HBO plus ${\alpha}-tocopherol-treated$(p<0.01).
내측광근 강화운동을 이용한 슬개-대퇴 동통 증후군 치험 2례
김종수,김진수,김세준,정승현,김효섭,윤문식,조태영,Kim, Jong-Su,Kim, Jin-Soo,Kim, Se-Jun,Jeong, Seong-Hyun,Kim, Hyo-Sub,Yoon, Moon-Sik,Cho, Tae-Young 척추신경추나의학회 2013 척추신경추나의학회지 Vol.8 No.1
슬개-대퇴 통증 증후군 환자 2례에 내측광근 강화 운동을 이용하여 치료한 결과, Knee X-ray(Skyline view) 상의 일치각 및 NRS, WOMAC Index의 호전을 확인하였다. 이에 저자는 본 증례를 보고하는 바이다. Objectives: The purpose of this case report is to investigate the effect of exercise for vastus medialis to knee pain patients with patello-femoral pain syndrome. Methods: Two patients with patello-femoral pain syndrome were treated by exercise for vastus medialis. To measure the outcome of the patients' improvement, we observed the X-ray of both knee sky-line view, Numerical Rating Scale(NRS), and Western Ontario and McMaster Universities(WOMAC) index. Results: After being treated by exercise for vastus medialis, the patients' X-ray of both knee sky-line view, Numerical Rating Scale(NRS), and Western Ontario and McMaster Universities(WOMAC) index were significantly improved. Conclusions: These results suggest that exercise for vastus medialis is effective treatment to patients with patello-femoral pain syndrome.
Diazinon이 계배(鷄胚)의 기형 유발에 미치는 효과 I. 계배(鷄胚) 형태와 콜린성 봉쇄약물에 미치는 효과
김종수,김곤섭,김양미,최원영,손성기,허정호,이주홍,Kim, Jong-shu,Kim, Gon-sup,Kim, Yang-mi,Choi, Wong-young,Son, Sung-gi,Heo, Jung-ho,Lee, Ju-hong 대한수의학회 1994 大韓獸醫學會誌 Vol.34 No.1
Teratogenic effects of diazinon were assessed on morphology of chick embryos cholinergic blocking agents. Diazinon at doses ranging from 25 to $2000{\mu}g/egg$, was injected on Day 3 of incubation. $TD_{50S}$, were different for the various teratogenic sings such as wry neck, micromelia, abnormal feathering, abnormal beak and curled claws. The threshold dose for wry neck was higher than the threshold dose for other signs; $40{\mu}g/egg$ produced substantial micromelia, abnormal feathering, abnormal beak and curled claws, but gave no sings of wry neck. In contrast to the teratogenic doses, the $LD_{50}$ of diazinon was very high(above $2000{\mu}g/egg$). One of the characteristics of diazinon-induced teratogenesis was reduction of body weight(78.8%) and body length(73.8%). Maximal teratogenic effects, scored as sings of retarded growth, wry neck, micromelia, abnormal feathering, abnormal beak, and curled claws, were produced when the insectcide was administered on the third or fourth day. The threshold dose for type II teratogenic sings including wry neck and short neck was higher than for type I including micromelia and abnormal feathering. Morphorlogical studies, using atropine and gallamine, suggested that nicotinc but not muscarinic receptors may be involved in the mechanism of diazinon-induced type II malformations.
White Electroluminescent Device by ZnS: Mn, Cu, Cl Phosphors
김종수,박재홍,이성훈,김광철,권애경,박홍이,Kim, Jong-Su,Park, Je-Hong,Lee, Sung-Hun,Kim, Gwang-Chul,Kwon, Ae-Kyung,Park, Hong-Lee 한국반도체디스플레이기술학회 2006 반도체디스플레이기술학회지 Vol.5 No.3
White-light-emitting ZnS:Mn, Cu, Cl phosphors with spherical shape and the size of $20\;{\mu}m$ are successfully synthesized. They have the double phases of cubic and hexagonal structures. They are applied to electroluminescent (EL) devices by silk screen method with the following structure: $electrode/BaTiO_3$ insulator layer ($50{\sim}60\;{\mu}m$)/ ZnS:Mn, Cu, Cl phosphor layer ($30{\sim}50\;{\mu}m$)/ITO glass. The EL devices are driven with the voltage of 100 V and the frequency of 400 Hz. The EL devices show the three emission peaks. The blue and green emission bands are originated from $CICu^{2+}$ transition and $ClCu^+$ transition, respectively. The yellow emission band results from $^4T^6A$ transition of $Mn^{2+}$ ion. As an increase of Cu concentrations, the blue and green emission intensities decrease whereas the yellow emission intensity increases; the quality becomes warm white. It is due to the energy transfer from the blue and green bands to the yellow band.
김종수,Kim, Jong-Su 대한출판문화협회 1998 출판저널 Vol.232 No.-
책을 만드는 것보다 파는 것은 더 어렵다. 하지만 책을 파는 데 과연 얼마나 힘을 기울여왔던가. 기존의 도매상 부도사태를 해결하는 것이 유통문제 전체의 해결이 아님을 명심해야 한다. 출판선진국들의 유통 현황을 연구해 우리의 도서유통 시스템에 끊임없이 접목해 나가야 한다.
다중 프로세서 시스템에서의 버퍼 및 공유 메모리 최적화 연구
김종수,문종욱,임강빈,정기현,최경희,Kim, Jong-Su,Mun, Jong-Uk,Im, Gang-Bin,Jeong, Gi-Hyeon,Choe, Gyeong-Hui 한국정보처리학회 2002 정보처리학회논문지 A Vol.9 No.2
고속 입출력 장치를 갖는 다중 프로세서 시스템은 데이터의 처리 성능 향상과 함께 입출력의 집중화에 따른 병목 현상을 줄여줄 수 있다. 이 때 프로세서간의 데이터 전송에 사용되는 공유 메모리는 그 구성과 이용 방법에 따라 시스템 성능에 많은 영향을 미치게 되는데, 본 논문에서는 공유 메모리의 사용방법을 비동기, 메일박스를 통한 인터럽트 전달인지 방식으로 설정한 후 버퍼 및 공유 메모리의 최적 사용량을 예측할 수 있는 모델에 대해 연구하였다. 시스템에 주어지는 입출력 데이터는 이더넷(IEEE 802.3) 망에 흐르는 패킷을 모델로 하며, 이의 대역폭과 burstiness(패킷의 집중화 정도)에 따른 메모리 사용 상황에 대해 살펴보았다. 고속 이더넷(Fast Ethernet) 환경 하에서 시뮬레이션 및 실험에 의해 시스템의 입출력 대역폭뿐만 아니라 패킷의 집중화 정도에 따라서도 버퍼 및 공유 메모리의 사용량이 달라지며, 두 메모리 사이의 사용량에 대한 상관관계가 성립될 수 있음을 알 수 있다. Multi-processor system with fast I/O devices improves processing performance and reduces the bottleneck by I/O concentration. In the system, the Performance influenced by shared memory used for exchanging data between processors varies with configuration and utilization. This paper suggests a prediction model for buffer and shared memory optimization under interrupt recognition method using mailbox. Ethernet (IEEE 802.3) packets are used as the input of system and the amount of utilized memory is measured for different network bandwidth and burstiness. Some empirical studies show that the amount of buffer and shared memory varies with packet concentration rate as well as I/O bandwidth. And the studies also show the correlation between two memories.