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이중관형 열교환기의 증발 열전달 특성에 관한 실험적 연구
이권재(Kwon Jae Lee),권오경(Oh Kyeong Kwon),김용찬(Yong Chan Kim),설원실(Won Sil Seol) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
An experimental investigation was carried out to examine the evaporative heat transfer characteristics in the double pipe heat exchanger using R-410a. The double pipe heat exchanger was helical coil type. The inner tube of double pipe heat exchanger was two types, spiral and circle. The experimental runs were carried out at a saturation temperature of refrigerant ranging between 5℃ and 15℃, and mass fluxes are 103.3~258.2 ㎏/㎡s. The inlet temperature of the water in the test section were 9℃, 12℃, 19℃ and 22℃. Heat transfer coefficient of refrigerant side of spiral type and circle type were 3.36~4.66 ㎾/㎡℃ and 2.64~3.86 ㎾/㎡℃. The pressure drop of refrigerant side for circle type was higher than that of spiral type at same mass flux. The effectiveness of spiral type and circle type were 0.34~0.66 and 0.19~0.57.
유우의 번식능률에 관한 연구 -분만간격, 임신시간, 첫 수정일수, 공태일수-
조명래,권오경,Cho Myoung-Rae,Kwon Oh-Kyeong 대한수의사회 1985 대한수의사회지 Vol.21 No.3
The survey was carried out to investigate calving interval, gestation period, the interval between parturition and first breeding and the duration from delivery to conception in the total of 320 heads of Holstein cows being fed in the suburbs of Suwon. Th
증례 : 류마티스 ; Creatine kinase 증가가 없었던 다발성근염 1예
박민선 ( Min Sun Park ),권오경 ( Oh Kyung Kwon ),김효선 ( Hyo Sun Kim ),신원재 ( Won Jae Shin ),한상학 ( Sang Hak Han ),홍명선 ( Myung Sun Hong ),손경민 ( Kyeong Min Son ) 대한내과학회 2014 대한내과학회지 Vol.86 No.2
환자는 CK의 상승 없이 상, 하지 근무력감을 주소로 내원하여 초기에는 류마티스 다발성 근통으로 진단하였으나 추후 증상 호전을 보이지 않아 근육 조직 검사를 통하여 다발성 근염으로 진단되었다. CK 등의 근육 수치의 증가가 없더라도 임상적으로 염증성 근염이 의심되는 경우에는 근육 조직 검사를 포함한 자기공명검사, 근전도 검사 등의 적극적인 검사를 통하여 염증성 근염 여부를 반드시 감별할 필요가 있겠다. Proximal muscle weakness can be induced by many diseases, such as muscular dystrophies, inflammatory muscle diseases, and polymyalgia rheumatica. Differential diagnosis of these diseases is important. The patient had proximal muscle weakness with a normal creatine kinase (CK) level. Our initial diagnosis was polymyalgia rheumatica because the CK level was normal. The patient was treated with low-dose corticosteroid. However, the muscle weakness did not improve. The diagnosis of polymyositis was confirmed by a muscle biopsy. We suggest that if the patient has typical symptoms with normal CK, then evaluations for inflammatory muscle diseases are essential. (Korean J Med 2014;86:258-262)
개의 치석제거를 위한 마취에 있어 Ketamine HCl/Propionyl promazine HCI과 Tiletamine HCl/Zolazepam HCl의 투여효과
신남식,최윤주,권수완,한덕환,박현종,권오경,Shin Nam-Sik,Choi Youn-Ju,Kwon Soo-Wahn,Han Duk-hwan,Park Hyun-Jong,Kweon Oh-Kyeong 한국임상수의학회 1993 한국임상수의학회지 Vol.10 No.2
To study effective dossage and administration route for scaling, ketamine HCl/propionyl promazine HCl(ketamine) combination and tiletamine HCl/zolazepam HCl(zoletil) were administered in one hundred six dogs. The dogs were toy poodle, Yorkshire Terrier, Pekingese and Chihuahua. Scaling and polishing time, possible treatment time after the first injection of anesthetics, the number of anethesia added, presence of tongue movement during anesthesia, the presence of swaying sign during recovery and respiration were evaluated. The possible treatment time after the first Injection of anesthetic in toy poodle were 26.3${\pm}$3.0 minutes with intravenous(IM) treatment of ketamine 10mg/kg, and 21.4${\pm}$6.6 minutes with intramuscula(IM) treatment of zoletil 8mg/kg, In Yorkshire Terrier were 19.51: 1.7 minutes with IV treatment of ketamine 10mg/kg. 19.0${\pm}$5.2 minutes IM and 20.8${\pm}$6.1 minutes with IM treatment of zoletil 5mg/kg,24.8${\pm}$3,5 minutes with IM treatment of zoletil 8mg/kg. In pekingese were 27.5${\pm}$2.1 minutes with IM treatment of ketamine 10mg/kg,28.0${\pm}$4.2 minutes with IM treatment of zoletil 8mg/kg. In Chihuahua were 19.5${\pm}$1.9 minutes with IV treatment of ketamine 7mg/kg, 17.5${\pm}$1.7 minutes with IM treatment of ketamine 10mg/kg and 20.3${\pm}$3.8 minutes with IM treatment of zoletil 5mg/kg, 21.2${\pm}$5.5 minutes with IM treatment of zoletil 8mg/kg. Swaying sign was observed in all group during recovery time, espically, in toy poodle and Yorkshire Terrier which administered zoletil 8mg/kg IM showed more severe swaying sign. The present results suggested that injection of zoletil 8mg/kg IM might be relatively effective for scaling in Chihuahua Within 20 minutes treatment for scaling in Yorkshire Terrier and Chihuahua, IM treatment of ketamine 7 to 10mg/kg is recommended.
형태안정성 PCM: n-Octadecane과 초고분자량 폴리에틸렌으로 구성된 고화 젤의 제조 및 특성
손태원,박재훈,이우승,박소현,문정언,권오경,Son, Tae-Won,Park, Jae-Hoon,Lee, Woo-Seung,Park, So-Hyun,Moon, Jung-Eon,Kwon, Oh-Kyeong 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.4
Phase change materials based on UHMWPE blended with n-octadecane were studied in this paper. In addition, this paper reviews recent studies on the preparation of shape stabilized phase change materials (SSPCM), such as SSPCM from UHMWPE and n-octadecane, their basic properties and possible applications to latent heat storage. The preparation methods used were the melting methods. Shape stabilized PCM (SSPCM) prepared for FT-IR spectroscopy, SEM, DSC, XRD, and ARES results of the analysis for shape stability to improve heat capacity were identified. The optimum compounding conditions included a content of 40% n-octadecane. The SSPCM 40% demonstrated less deterioration of physical property and effective thermal property compared with other conditions. As a result, these SSPCMs could be said to be acceptable heat storage & release materials for various products.
자이언트 판다(Ailuropoda melanoleuca)에서 발생한 Yersiniosis 치료 1례
신남식,최윤주,권수완,한덕환,이기환,정희경,이창우,채찬희,김선중,권오경,이흥식,엽지용,Shin Nam-sik,Choi Yoon-ju,Kwon Soo-wahn,Han Duk-hwan,Lee Gi-hwan,Jeong Hee-kyoung,Lee Chang-woo,Chae Chan-hee,Kim Sun-joong,Kweon Oh-kyeong,Lee Heung-sh 한국임상수의학회 1995 한국임상수의학회지 Vol.12 No.1
Two giant pandas, which come from China have been roared in Yong-in Farmland zoo since 1994. One of them, which is female and 2 years old showed anorexia, mucous diarrhea and severe abdominal pain. It revealed neutrophilia and hypokalemia which suggested inflammation and loss of electrolytes by diarrhea. The mucous material contained intestinal mucoid epithelim which was infected Gram negative bacilli and infiltrated with neutrophils. The antibacterial therapy with nafcillin and ampicillin was not successful. Yersinia entrocolitica was implicated as a causative organism in the occurrence of bacterial enteritis. This organism had resistance to ampicillin, chlorampenicol, cefalothin, tetracycline, trimetoprim-sul-famethoxazole, erythromycin, gentamicin, kanamycin, carbanicillin and danofloxacin. It responded to the simultaneous administration of cefopherazone, flunixin-meglumine, physiological saline, Lactate Rainger's solution, sodium bicarbonate, KCL and vitamins and recovered after a period of 30days.