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燃料節減을 위한 Propeller 回轉數와 Propeller pitch角의 組合에 관한 小考 : 全北 402號를 中心으로
崔順烈 군산대학교 1988 群山水産專門大學 硏究報告 Vol.22 No.1
For minimizing the fuel oil consumption at sea, I have investigated the various datum between the propeller RPM and the pitch angle of propeller for the training ship of M. S Jeon Buk 402. To examine the problem, the pitch angle of propeller was changed from 9。 to 12。and The propeller RPM was changed in 480, 505, 530, 555 and 580 RPM. Th results are as follows. 1.The specific fuel oil consumption(kg/h.m) is the smallest on occasion of propeller RPM 480 and the pitch angle of propeller 9。. 2.The specific fuel oil consumption was shown the smallest increasing rate on the case of the propeller RPM 530∼555 and the pitch angle of propeller 12。. 3.To increase the constant ship speed, the fuel oil consumption is always smaller on the occasion of increasing of propeller pitch angle than increasing of propeller RPM.
崔順烈 군산대학교 1984 群山水産專門大學 硏究報告 Vol.18 No.3
This study is invested how the air flow of the blower system is effected on the cooling equipment and the cooling area. The following conclusions were obtained experimently. 1.The cooling load of air conditioner is increased nearly in proportion to the suppling air volume through a blower. 2.By increasing of the blower intake grille surface area, the air flow of the aircondition area is increased from 12.22㎥/min. to 46.48㎥'/min. And also the cooling capacity is increased from 6880.1 Kcal/hr. to 21,171.9 Kcal/hr. Therefore, the air volume to supply the air condition area is increased from 11.93㎥/min. to 43.83㎥/min. According to the above results, the number of air circulation is increased from 2.2 times to 8.2 times per hour. Also the average room temperature is controlled from 25.23℃ to 21.68℃. It is improved to the living condition and cooling capacity.
崔順烈 군산대학교 1990 群山水産專門大學 硏究報告 Vol.24 No.1
In order to reduce engine troubles during operation and contribute in developing a high reliable marine the author analysed the factors of marine engine and relation equipment troubleas by principal component analysis method. Analysed data are marine engine & relation equipment troubles selected from sea casualties from 1985 to 1988. The results obtained are as follows. 1. It is found damage of the engines major part, troubles of propeller, electric relation equipment and cylinder system occupied considerable proprotion. 2. It is proved the major part of marine engine troubles from corrosion & friction loss and maintenance defect for cylinder, gear train and cooling system, while from manufacture and treatment defect for crank shaft, electric relation equipment system and hull damage defending on engine relation equipment. 3. Crank shaft, gear train and electric relation equipment system disorders come out heavy damage, while propeller, cooling, fuel oil & relation equipment system troubles turn up light damage.
구급일지를 통한 병원 전 환잔 분류 및 처치의 적절성 평가 연구
민순식,김재광,이근,박철완,양혁준,류일,현성열,이훈규,정환모,김윤 대한응급의학회 2000 대한응급의학회지 Vol.11 No.4
Background: Recently, patients' demands for emergency medicine are increasing, and most of prehospital medical care, including basic life support, cardiopulmonary resuscitation and triage, are provided by paramedics or emergency medical technicians. Evaluation of the adequacy of prehospital management and triage has become important for improving the quality and the effectiveness of the emergency medical system. Methods: The 202 patients who were transferred by ambulance with paramedics, nurses, or emergency medical technicians to the Emergency Department in Gil Medical Center from July 1, 1999, to September 31, 1999, were enrolled. This study was conducted prospectively by using the emergency physician,s log and newly devised protocols recorded by paramedics or nurses. Results: 1) Male to female ratio was 1: 0.8, and the peak age of the patients were the 4th(18.8%) and 6th decade(15.3%). 2) Of the 202 patients, 84 patients were transferred for trauma and 118 for medical problems. The mean transfer time was 6±1.73 minutes. 3) The validities of prehospital triage and decisions using the trauma severity measure and the disease severity measure, were 33.3% in trauma patients and 57.6% in medical patients.4) The results for the adequacy rate in prehospital management analyzed by using the rate of necessity of treatment. performance of treatment, and adequate treatment were as follows: oxygen supply.38.1/41.6/93.8 ; wound dressing. 19.3/71.8/92.9 ; immobilization of the cervical spine, 15.8/56.3/92.9 ; application of a spinal board. 12.9/42.3/72.7 ; application of a splint, 9.9/50.0/60.0 ; manual maintenance of an airway. 9.9/55.0/63.6 ; and CPR, 4.5/66.7/0. 5) Kind of ALS(Advanced Life Support) were not conducted(peripheral IV, EKG. intubation, medical administration. defibrillation, pacing). The rates of necessity of treatment were as follows: peripheral IV, 40.6%; ECG monitoring, 23.3% ; endotracheal intubation, 8.9% ; medical administration, 8.9% ; defibrillation. 3.5%; and pacing. 1.5% Conclusion: The adequacy of prehospital triage and decisions using trauma and disease severity measures was relatively low. To improve the adequacy of BLS(Basic Life Support) and to increase the performance of ALS(Advanced Life Support), we must create challenges to develop new protocols and to supplement new equipment.
장순웅,이시진,송정훈,권수열 한국환경과학회 2004 한국환경과학회지 Vol.13 No.12
Bio sparging experiments were conducted in a laboratory column to investigate the potential removal of diesel contaminated groundwater. The objectives in this study were (a) to determine the extent of diesel degradation in laboratory columns under supplement of nutrient; (b) to determine the effect of variation of air flow in the removal of diesel and (c) to evaluate the potential enhancement of diesel degradation as a function of temperature. Our results showed that the nutrient supplement and higher air flow greatly enhanced diesel degradation. However, the variation of water temperature examined slightly increased degradation rate of diesel fuel.
金鍾悅,鄭順姬 大韓法醫學會 1983 대한법의학회지 Vol.7 No.1-2
The authors have made a study on the crown part of 3,752 permanent teeth except third molar in study model of 44 men and 90 women for the purpose of obtaining some data which is necessary to tell apart sex by teeth. The abtained results were as follows: 1. The crown length was generally higher the men than the women in all each teeth is kind. 2. The sex difference degree in the men and women was variety due to the teeth is kind. 3. Generally, it is trends which the crown length reveals more sex difference than the mesio-distal and bucco-lingual length. 4. Because the crown length sex difference of the canine is very distinguishable, the canine has best conditions as objected teeth of sex judgement.
경기종목의 특성에 따른 유·무산소성 대사능력 및 무산소성 파워에 관한 실험적 연구
조현철,송순천,김학렬,손태열 成均館大學校 科學技術硏究所 1989 論文集 Vol.40 No.2
This experimental study was designed, 1) to observe maximal oxygen uptake and anaerobic threshold during incremental loading treadmill exercise by 2-min interval. 2) to determine the anaerobic power in the wingate test during bicycle ergometer work with toe-stirrups. The subject were 16 college elite boxing player, 10 college elite soccer player The results were as -follows: 1. The means±SD of maximal oxygen uptake and maximal oxygen uptake per kg body weight were 4.06±0.66l/min, 4.27±0.46l/min, and 60.58±7.61ml/kg/min 63.05±3.41ml/kg/min, respectively. also maximal heart rate were 187.88±9.44 beats/min, 185.40±6.57 beats/min. respectively. 2. The means±SD of maximal oxygen uptake and maximal oxygen uptake per kg body weight at anaerobic threshold was 2.93±0.5l/min, 3.23±0.47l/min (AT-VO2. l/min), and 43.70±6.97ml/kg/min, 47.71±4.99ml/kg/min (AT-VO2. ml/kg/min), respectively. also Anaerobic Treshold level (AT-% VO2max) was about 72.49±4.37% VO2max, 75.37±8.8% VO2max, and AT-% HRmax was about 86.07±5.97% HRmax, 87.84±6.25% HRmax, respectively. 3. The means ±SD of Anaerobic Power in the wingate test was 592.50±65.42 Wattes, 588.00±46.30 Wattes, respectively. The results of this study indicated that boxing players are incresed training program and exercise prescription for anaerobic metabolic process, soccer players are done training program for aerobic metabolic process, because of decresed maximal oxygen uptake and anaerobic threshold level.
위암종과 Epstein-Barr 바이러스와의 연관성에 대한 연구
심광용,김호영,김효열,백순구,권상옥,조미연,이창훈,이종인 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.14 No.-
Objectives: Epstein-Barr virus (EBV) has been known to be linked to a spectrum of neoplastic conditions, including nasopharyngeal carcinoma, Burkitt's lymphoma, peripheral T-cell lymphoma and Hodgkin's disease. This study aims to investigate the association of EBV with gastric carcinoma in Korea. Methods: Fifty-three cases of gastric adenocarcinoma were studied for evidence of EBV infection by EBV-encoded small RNA (EBER) in situ hybridization (ISH) on the paraffin sections and amplifying the EBV genome encoding envelop glycoprotein (gp220) with polymerase chain reaction (PCR) in fresh gastric cancer specimens. Results: EBER was detected in 7 (13.2%) of 53 gastric carcinomas and all cases were male. In 6 (85.7%) of 7 EBER-positive cases, the tumors were located in the upper and middle part of the stomach. EBER ISH study showed strong positivity in all the tumor cells, but negativity in surrouning lymphocytes, stromal cells and normal gastric mucosa. DNA PCR was positive in 23 (43.4%) of 53 gastric carcinomas, including all of 7 EBER-positive cases. Conclusion: We could observe some association of EBV with gastric carcinoma, and our findings about the charateristics of EBV-positive gastric cancers involving sex, site and histological type are similar to those in Japan. However, EBV-positive rate of gastric cancer is higher than in Japan and lower than in Western countries. Further studies to elucidate oncogenic mechanism of EBV in gastric cancer should be performed.
徐萬錫,李文燦,崔順烈 군산대학교 1989 群山水産專門大學 硏究報告 Vol.23 No.2
The maritime accidents of vessel were investigated by using the maritime Inquiry courts data in korea from 1979 to 1987. The main results of the studies are summarized as follows. 1.The reason of the maritime accident were occured mainly on account of the operational fault (58%), Inferiority repair of engine equipment(21%), and unskilled temperament of seaman. 2.The type of the maritime accidents were collision(32%), engine trouble(18%), around(17.5%), foundering(12%) in order. 3.The accidents rates by the type of vessel were showed fishing vessel(46.9%), cargo vessel(32.6%), tankers(6.5%), passenger boat(4.7%) respectively. 4.As the restricted visibility, the accidents were occured between 8PM and 8AM(56%) in time, and more than 100G/T(39%) vessel.