엔로플록사신 액제의 닭유래 병원세균에 대한 시험관내 항균효과 시험

윤효인,박병권,조준형,정상희,박경환,장범수,김종춘,황윤환,임종환,이내경,박승춘 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-

In this study the antimicrobial spectrum and sensitivity of a liquid formulation of enrofloxacin against the major six pathogenic bacteria isolated from the diseased poultry in Korea were evaluated in comparison with ciprfloxacin (CFX), gentamicin (GM) and penicillin (PC). A liquid form of enrofloxacin, a test material and ciprofloxacin showed at least 83% antibacterial activity against all of six test pathogenic microorganisms at the fixed concentration of 10 ㎍/㎖. Gentamicin and penicillin revealed much lower antibacterial activity at the same condition. We evaluated the liquid form of enrofloxacin as having widespread antibacterial spectrum against poultry infections. The liquid form of enrofloxacin showed potent antibacterial activity, with the MIC range being 0.12∼2 ㎍/㎖ against Gram positives, 0.06∼2 ㎍/㎖ against Gram negatives and 0.5∼2 ㎍/㎖ against Mycoplasma spp. These values were equivalent to or somewhat higher than those of ciprofloxacin, but much lower than those of gentamicn and penicillin. This new liquid form of enrofloxacin would find its way in application of mixing with drinking water for the prevention and treatment of diverse infections in chickens.

엔로플록사신 액제의 닭 호흡기 및 소화기 감염증에 대한 예방 및 치료효과

윤효인,박병권,조준형,정상희,박경환,장범수,김종춘,황윤환,임종환,이내경,박승춘 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-

We evaluated the efficacy of the liquid form of enrofloxacin against poultry respiratory and digestive infections, the major problems in the poultry industry, from diverse diagnosis viewpoints. Results obtained through this study were as follows: 1. The liquid form of enrofloxacin showed good acceptability to poultry owing to no abhorrence to the drug by chickens, which indicated its suitability for mixing in drinking water. 2. The application of the enrofloxacin formulation improved the productivity of the chicken farm to a great extent by lowering the death toll of chicken raised in the farm. 3. The use of the drug shortened the days to the market, and increased the body weight at the time of marketing. 4. Preventive and therapeutic effects of the liquid enrofloxacin were observed higher than ampicillin, a major antibiotic used in poultry farming. From above results, the liquid form of enrofloxacin would find its use for the prevention and treatment of digestive and respiratory infections, let alone the growth promotion and feed efficiency, especially in the chicken farming practice.

시멘트 종류별 콘크리트의 적산온도에 의한 강도예측에 관한 연구

장종호,나철성,김재환,김용로,길배수,남재현,김무한 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

The purpose of this study is to exhibit fundamental data which can apply to quality and process management of structure concrete using special cement in the construction field investigating strength prediction by maturity method of concrete according to cement types. The activation energy value was derived from the experimental study that experimental factors were selected as W/C ratio of 45%, the kinds of cements of 3 levels of O.P.C, H.B.C, H.S.C and curing temperature of 3 levels of 5℃, 20℃, 35℃. Also, after investigating relationship between compression strength and equivalent ages of concrete according to cement types, the strength prediction was investigated by maturity method. As the above of results, differences between the prediction strength by strength prediction equation and the actual measurement strength were lower, therefore it is considered that the strength prediction by maturity method is possible not only concrete using normal portland cement but also concrete using special cement.

통영 연안 해역에서의 미생물 분포

장지철,김말남,이진환,김종만 한국환경생물학회 2000 환경생물 : 환경생물학회지 Vol.18 No.4

Surface and bottom water samples were collected from 10 stations located in the coastal area of Tongyong in April, August and October 2000. Distribution of heterotrophic bacteria, coliform bacteria and fungi in the sea water samples was investigated by measuring the comrresponding viable cell number according to the plate counting method. Heterotrophic bacteria in the surface water counted 3.1×10 exp∼4.0×10 exp (3) cfu ml^1, 2.7×10 exp∼1.2×10 exp (5) cfu ml^-1 and 1.3×10 exp (2)∼7.2×10 exp (2) cfu ml^1 in April, August and October, respectively. The cell number of coliform bacteria in the surface water amounted to 0∼15×10 exp (1) cfu ml^-1, 3.5×10 exp (1)∼5.2×10 exp (3) cfu ml^-1 and 0∼1.8×10 exp (2) cfu ml^-1 in April, August and October, respectively. As for fungi, the cell number in the surface water was 0∼3.0×10 exp (1) propagules ml^-1, 3.0×10 exp (1)∼8.0×10 exp (1) propagules ml^-1 and 0∼2.2×10 exp (1) propagules ml^-1 in April, August and October respectively. The surface water samples from the station 3 in August were added with feed staffs for fish as much as 0.01gl^-1, 0.1gl^-1 and 1gl^-1 and cultured at 5℃, 15℃, 25℃ and 35℃. Microbial cells were not isolated at all when the culturing temperature was 5℃. However, the microbial cell number increased significantly in all the surface water samples containing 1gl^-1 of the feed stuffs when cultured at 15℃, 25℃ and 35℃.

결과의 지식(K.R) 제시유형이 농구기능 학습에 미치는 효과

장인석,신현주,진성룡,김종환,김천년 慶熙大學校 體育科學大學 1990 體育科學論叢 Vol.- No.3

The purpose of this study is to investigate the effect of K.R on motor learning of basketball. The subject of this experiment were 90 women students, the second class highschool. They were no apparent physical defects and experiment of basket ball. The subject were divided into three groups ; verbal feedback, visual feedback and verbal+visual feedback groups. In each groups, 30 students were assigned. For the study, the skill test were pass, dribble, shot and combination of basketball. Each group was taught for 12 hours of basketball skill selected for the study. However, teaching methods were different a way of furnished K.R. The classes were three of basketball progam of physical education curriculum at high school. For the data analysis, one-way analysis varianace, turky's-test was employeed. As a result of this study, conclusions were as follow : 1. In part of both pass skill and shot skill, the verval+visual feedback groups were most effcetive among the other groups. 2. For the dribble skill, the verval+visual feedback group was more effective than the verval feedback group. 3. In the case of combination-skill, there have been no significant difference among the three groups.

부산·경남 지역의 절취사면 보강 사례 연구

장정욱,박춘식,김종환 國立 昌原大學校 産業技術硏究所 2002 産技硏論文集 Vol.16 No.-

This study examined cut slope reinforcement cases in the Pusan-Kyoungnam district, which includes 3 Pusan, 2 East Kyoungnam, 6 Middle Kyoungnam and 3 West Kyoungnam cases. It also analyzed the causes of the collapse and hazards, and the reinforcement method that had been used. The conclusions of the study are presented in the following. (1) The major causes of collapse and hazards in the cut slope are in the following. (ⅰ) The rise of ground water due to a local downpour and the ground seepage of water. (ⅱ) Existence of a soft ground layer. (ⅲ) A decision of slope inclination by an empirical method. (2) It turned out that the main reinforcement methods used for each cut slope were the remethod of gentle slope inclination and the retaining wall method. The auxiliary methods were drainage method for the prevention of water seepage and protection method of surface for the prevention of surface erosion. These methods were applied to almost all the slopes.

손가락 끝 점을 이용한 손 형상 인식

김종민,이웅기,장근실,양환석,허진경,박승규 朝鮮大學校 統計硏究所 2007 統計硏究所論文誌 Vol.9 No.1

최근 사용자 친화형 유저 인터페이스 구현을 위해 인간의 손 형상을 실시간으로 인식하는 연구의 중요성이 부각되고 있다. 그러나 인간의 손은 자유도가 크기 때문에 손 형상을 정확히 인식하기란 매우 어렵고 또한 피부색과 유사한 색을 가지는 복잡한 배경에서는 더욱 곤란하다. 본 논문에서는 별도의 센서를 부착하지 않고 카메라를 사용하여 피부색 정보에 의한 손 형상을 분할한 후 손가락 끝 점을 찾는다. 찾은 손가락 끝 점을 이용하여 방향을 탐지하는 알고리즘에 대해 기술한다. 이 방법은 템플리트 매칭을 이용하여 손가락 끝 점을 탐색한 후 찾은 손가락 끝 점과 손목의 중심을 이용하여 전, 후, 좌, 우 방향을 탐지한다. 제안하는 방법을 이용하여 3D 가상현실 공간에서의 네비게이션(Navigation)에 응용하였으며, 실험결과 전진, 후진 및 좌측, 우측의 방향전환도 매우 좋은 결과를 보였다. 또한 본 논문에서 제안하는 방법은 마우스, 키보드, 조이스틱 등의 조작 없이 전, 후, 좌, 우 방향전환을 사용자가 직관적으로 지시함으로써 보다 자연스러운 인간과 컴퓨터의 상호작용을 제공할 수 있을 것이다.

열공성 뇌경색과 뇌내출혈의 위험인자 비교

이장준,이현아,최종환,이형,임정근,이상도,박영춘 계명대학교 의과학연구소 2000 계명의대학술지 Vol.19 No.2

Cerebral small vessel disease is the most important cause of lacunar infarction (LI) and intracerebral hemorrhage (ICH). It is generally postulated that, in its early stages, the vascular lesion engenders vessel wall fragility and ICH. But if rupture dose not occur, segmental vessel occlusion evolves, producing LI. It may be a common aging phenomenon that is exacerbated by hypertension and diabetes mellitus. This study was performed to evaluate risk factors of LI and ICH. We reviewed retrospectively the medical records of 690 patients (254 LI, 436 ICH) with stroke who were admitted to Keimyung University Dongsan Medical Center from January 1995 to December 1998. The major risk factors including age, sex, hypertension, diabetes mellitus and several minor risk factors were analyzed in these patients. Older age (p<0.01), male sex(p<0.01), hypertension with treatment(p<0.01), hypertension with long duration(p<0.01) and hypertriglyceridemia(p<0.01), cigarette smoking(p<0.01) were significantly more frequent in LI. Younger age(p<0.01), female sex(p<0.01) and hypertension without treatment(p<0.01), hypertension with short duration(p<0.01) were more frequent in ICH. The prevalence, duration and treatment of diabetes mellitus were not different between these two groups. This study show that the age, sex, treatment of hypertension, duration of hypertension and cigarette smoking seem to be significant risk factors between LI and ICH.

만성 호중구성 백혈병 1례

기장도,박치영,류보열,김태종,모성환,곽재정,문철호,박근홍,박유환,정춘해 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1

Chronic neutrophilic leukemia is a very rare myeloproliferative disorder which is characterized by severe sustained mature neutrophilic leukocytosis in peripheral blood (PB), hepatosplenomegaly, elevated leukocyte alkaline phosphatase, serum uric acid. serun viatmin B 12 and the bleeding tendency despite normal platelet count and coagulation time, absence of philadelphia chromosome, and the absence of fever or underlying infection or disease sufficient to mimic a leukemoid reaction. We have experienced a 34-years-old male patient with atypical chronic neutrophilic leukemia. On admission, the leukocyte count was 56,860/uL. severe neutrophic leukocytosis with 76% neutrophils and rare immature forms on PB smear. Many neutrophils had toxic granules, and vacuoloes. Leukocyte alkaline phosphatase score was decreased. The cytogenetic study showed Philadelphia chromosome negative with normal karyotype.

수영장의 서비스 품질, 고객만족, 전환장벽이 고객충성도에 미치는 영향

김장환,박진기,예종현 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3

This Study, Effects of Quality Services, Customer Satisfaction, and the Switching Barrier on Customer Loyalty of Swimming Pools, aims to determine the relationships between (1) services rendered, (2) customer satisfaction, and (3) the switching barrier of public swimming pools in Daegu, Korea with resultant (4) customer loyalty using the regression analysis. To achieve this goal, the Study establishes a hypothetical model based on prior related research, The Systematic Stratified Cluster Random Sampling Method was used in evaluating the sampling data The results of the research conducted using the above-mentioned study methods and data analysis are as following: 1. The more a customer was aware of the services provided by swimming pools, the closer the reciprocal personal relationship and the higher switching costs. Both the reciprocal personal relationship and switching costs are sub-variables of the switching barrier, However, when customers were well-aware of the services being provided, the attractiveness of alternatives seemed to decrease, 2. The more customers were aware of the services provided by swimming pools, the more they felt satisfied with a pools services. 3. As the reciprocal personal relationship developed and the switching costs increased, the switching barrier appeared to increase, However, the attractiveness of alternatives turned out to have minimal or no influence on the switching barrier, 4. The more customers felt satisfied with the pool they were using, the greater the switching barrier became and thus less likely that the customer would change pools, 5. As the switching barrier increased, the customer loyalty to a pool also improved, 6. The service quality, sub-variables of the switching barrier, customer satisfaction, and the switching barrier had significant impacts on customer loyalty to the swimming pool he or she was using at the time, In summary, a customers awareness of exemplary user services of a swimming pool helps him or her to better understand the sub-variables of the switching barrier (except the attractiveness of alternatives) and results in greater customer satisfaction and loyalty of a truly quality-conscious, health facility, In turn, a better understanding by a customer of a pool facilities, services and customer-conscious ness contributes significantly to building the switching barrier and results In higher customer loyalty by the client, Therefore, owners and operators of swimming pools in Dae gu, Korea should focus on three key elements to customer satisfaction: (1) quality of user-services, (2) customer satisfaction, and (3) the switching barrier, Prioritizing pool operations around these three fundamentals will enable pools in the area to gain market share and improve customer loyalty, long term.