강원도 화천군 수달(Lutra lutra) 서식지의 식생 구조

서형수 ( Hyung Soo Seo ),신영섭 ( Young Seob Shin ),이경은 ( Kyung Eun Lee ),김윤미 ( Yoon Mi Kim ),전미나 ( Mina Jeon ),남택우 ( Taek Woo Nam ),한성용 ( Sung Yong Han ),정연숙 ( Yeonsook Choung ) 한국하천호수학회 2014 생태와 환경 Vol.47 No.special

In order to determine whether vegetation would be one of the factors for the selection of otter home range, vegetation structure and other potential factors were studied in Hwacheon, Korea. Thirteen sites, otter’s activity found and not found, were investigated in North Han River and connected tributary streams of Hwacheon-gun. Three types of vegetation were classified by cluster analysis, which is short grass, tall grass and shrub type. Vegetation zone of each channel is composed of either one type, or mosaic of tall grass and shrub type. Short grass type is common in Lake Paro and upper North Han-river where water level is highly variable throughout a year. Therefore, annual species such as Persicaria nodosa, Fimbristylis dichotomam and Chenopodium ficifolium are the most dominant. Shrub type is common at the downstream sites of Jichon stream and along mainstream of North Han River down Lake Paro. A shrub species, Salix koreensis, is the most common. Tall grass type is dominant occupying the most vegetation zone of the tributary channels. Phragmites japonica is absolutely dominant. Due to its dense cover, a few plant species are co-existed. Otter activity was found in all three vegetation types and no marked activity was found at some sites of tall grass type. There is no difference in species composition and physiognomy between tall grass sites with and without otter activity, while it shows significant difference in fish availability between two groups. Overall we found that home range of otters in the region is along the mainstream and downstream of tributary streams with high fish availability in all vegetation types and in various human activity levels.

임플란트 보철물에서 임시 접착용 시멘트의 인장결합강도 비교

서경숙,권태엽,권용훈,김교한 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.4

The major disadvantage of cement-retained implant-supported superstructure is difficulty of retrievability. Sometimes, it is recommended that proetheses be provisionally cemented to implant abutment in order to ebaluate occlusion, screw loosening and tissue reaction. The retention of the provisional luting cementedusually employed in this case is considered to be important. This study compared tensile bond strength of gold crowns cemented to machined titanium implant abutments with three provisional luting cements. Also the effect of petrolatum and thermocycling on tensile bond stength were evaluated. Tensile bond strength of provisional luting cement were as follows with the decreasing order of Eugenol (13.06±1.544 kgf), Temp-Bond (9.41±0.737 kgf), Cavex (8.04±0.974 kgf), and Temp-bond with petrolatum (5.28±0.800 kgf). The addition of petrolatum in Temp-bond decreased tensile bond strength significantly (p<0.01). After thermocycling of 1,500 cycles, the tensile bond strengths of the cements were decreased with the order of Nogenol (10.87±3.031 kgf), Temp-Bond (8.1±0.667 kgf), Cavex (7.33±1.103 kgf), Temp-bond with petrolatum (4.88±1.348 kgf). The mocycling decreased the bond strength of Temp-Bond significantly, with no effects no other cements (p<0.01).

기업ㆍ민간 스포츠센터 소비자의 이용만족도 비교 분석

서봉한,노영태,이상봉,이영덕,정용제,박병주 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-

The purpose of this study was to analyze differences between satisfaction of members who attend sports center managed by enterprise and those of members who attend sports center managed by private. We hoped through these analysis, consumer could get useful date for choosing sports center and managers could gets data for establishing effective marketing strategy. The objective of this study was 500 members of sports center managed by enterprise and by private in city of Ulsan. Questionnaires were completed through self-administration. We used SPSSWIN 8.0 to analyze gathered data Chi-square test was used for analyzing conditions of members. All statistical data were tested with p〈.05. The result were as follows. 1.Satisfaction of facility and service 1) According to sex, men showed higher satisfaction with enterprise center. In detail, men showed higher satisfaction with enterprise center in exercise facility, dressing room, shower room and sanitation. 2) According to age, 30's show the highest satisfaction with enterprise center in all items but in parking lot. In the comparison of whole mean, 50's showed the highest satisfaction with both enterprise and private center. 3) According to education level, more than college graduation, college student or dropout and high school graduation showed their satisfaction in turn in enterprise center and college student or dropout, more than college graduation and high school graduation showed their satisfaction in turn in private center. In the comparison of whole mean, the satisfaction of enterprise center was higher than that of private center. 4) According to income, all groups but group(100-149 million won) showed higher satisfaction with enterprise center in the comparison of whole mean. 5) According to the type of job, salary worker and functional occupation showed higher satisfaction with enterprise center and educational occupation and owner of small business or store showed higher satisfaction with private center. 2.Satisfaction of offered service 1) According to sex, men showed higher satisfaction with both centers. 2) According to age, in the comparison of whole mean, 50's showed the highest satisfaction with both enterprise and private center. 3) According to education level, more than college graduation, college student and high school graduation showed their satisfaction in turn with both centers. In the comparison of whole mean highschool graduation and college graduation showed the highest satisfaction with enterprise center and college student or dropout showed the highest satisfaction with private center. 4) According to income, all groups but the group(250-299 million wons) showed higher satisfaction with enterprise center in the comparison of whole mean. 5) According to the type of job, salary worker and functional occupation showed higher satisfaction with enterprise center and worker in special jobs and owner of small business or store showed higher satisfaction with private center.

궤도 차량의 기동성능 예측 프로그램 개발

서정길,김종수,김용태,이경식,한성현 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

In this paper, we developed a Windows XP version off-line programming system which can simulate a track vehicle model in 3D graphics space. The track vehicle was adopted as an objective model. The interface between users and the off-line program system in the Windows XP's graphic user interface environment was also studied. The developing language is Microsoft Visual C++. Graphic libraries, OpenGL, by Silicon Graphics, Inc. were utilized for 3D Graphics.

2상유동장 내 3차원 밀도 분포 재건을 위한 토모그래피 기법의 성능 비교 분석

고한서,김용재 한국비파괴검사학회 2002 한국비파괴검사학회지 Vol.22 No.5

Algebraic reconstruction technique (ART)과 multiplicative algebraic reconstruction technique (MART)이라는 토모그래피 방법을 이용하여 2상유동에서 기포의 거동을 비침투적으로 분석하였다. 먼저, 컴퓨터 합성 영상장으로 환상유동과 기포유동을 제작하여 2차원 단면의 재건을 시도하였다. 2상유동의 보다 정확한 결과들을 얻기 위하여 두가지 토모그래피 방법이 비교되었다. 그리고, 2상유동에서 기포의 거동을 3차원으로 분석하기 위하여 2개와 3개의 기포가 존재하는 3차원 합성 영상장으로부터 2차원 단면에서 보다 정확한 결과를 보인 MART 재건법에 의해서 밀도 분포 해석을 수행하였다. Bubble behaviors in two-phase flows have been analyzed by tomography methods such as an algebraic reconstruction technique (ART) and a multiplicative algebraic reconstruction technique (MART). Initially, a bubbly flow and an annular flow have been investigated by cross-sectional view using computer synthesized phantoms. Two tomography methods have been compared to obtain more accurate results of the two-phase flows. Then, reconstruction of three-dimensional density distributions of phantoms with two and three bubbles have been accomplished by the MART method which provided the better results for the two-dimensional reconstructions accurately to analyze the bubble behaviors in the two-phase flow.

표재성 방광암에서 Bacillus Calmette-Guerin 방광 내 주입요법 : 장기적 추적결과 Long-term Follow up Results

김용웅,왕세환,육승모,한동석,노안식,나용길,설종구 충남대학교 의학연구소 2003 충남의대잡지 Vol.30 No.2

To evaluated the results of long-term follow up of superficial bladder cancer patients who were treated with transurethral resection and intravesical BCG therapy. Between April 1989 and December 1997, 65 patients with superficial bladder cancer were treated with TUR-B(Transurethral resection of bladder tumor) and intravesical BCG instillation, and follow-up was performed for 5 years longer, and the mean follow-up duration was 82 months. Of 65 patients, pathologic stage were Ta in 17 cases and T1 in 48 cases and grade were G Ⅰ in 22 cases, G Ⅱ in 35 cases and G Ⅲ in 8 cases. The tumor recurred in 22(33.8%) at the median of 21.8 months and the tumor progressed in 9(13.8%) at the median of 20.8 months. Most of the recurrences and progression were within 3 year(838 and 77%). Progression is more likely in higher grade(G Ⅱ, G Ⅲ) and higher stage(T1). The complete response rate after first and second courses of BCG therapy were 53% and 73% and the 5 and 10 year disease specific survival rates were 89.5 and 78% respectively. The complete response rate after first and second courses of BCG therapywere 53% and 73%. Most of recurrences and progressions were within 3 years of the BCG therapy, but some cases occured after 5 years. Therefore, close long-term follow up is needed.

보존료가 두부의 저장에 미치는 효과

김동한,신용서,전승호,백승화,이갑상 圓光大學校 1992 論文集 Vol.26 No.2

두부의 저장성 향상을 위해 보존료를 첨가하여 저장중 두부의 미생물상과 이화학적 변화를 검토하였다. 보존료 첨가에 의한 두부의 기호도 변화는 큰 차이가 없었으며 부패가 진행될 수록 적정산도와 amino태 및 ammonia태 질소량은 증가하였다. 두부는 acetic acid로 응고시키는 것이 CaCl₂보다 보존료에 의한 저장성 향상에 효과적이어서, acetic acid에 0.05% K-sorbate와 3% NaCl을 혼합첨가한 구는 저장중 이화학적 변화 및 호기성, 혐기성 세균수가 ?? cell/g수준인 점을 고려해 볼 때 30℃에서 48시간까지 저장이 가능하였다. In order to improve the shelf life of Tofu, the effects of preservatives on Tofu were investigated for microbiol and physicochemical changes during its storage. The sensory evaluation was not deteriorated by preservatives (0.05% K-sorbates). According to the progression of spoliage of Tofu, titratable acidity, and amino and ammonia nitrogen contents were increased. The effect of chemical preservatives on the shelf life of Tofu was shown to be stronger in the Tofu by acetic acid than in that by CaCl₂. The presence of 0. 05% K-sorbate and 3% NaCl as a preservative in Tofu by acetic acid extended it's shelf life upto 48 hrs at 30℃.

營業停止 處分을 받은 衛生業主들의 意識行態

오서경,박재용,한창현,차병준 경산대학교 보건복지연구소 2000 保健福祉硏究 Vol.5 No.-

A survey was conducted to 252 owners of restaurants and taverns who, during the period of from Jan, 1 1998 to Sept.15 1998, were ordered by the authorities concerned to suspend their businesses due to the violations of relevant laws an regulations. Out of 252 questioned 195(77.4%) were those who completed the required orientation course for owners of the above businesses. It is found that the rate of completion of the course are higher among those who had been running the business for a longer period of time, and alwo among those who had bigger facilities. Asked how they found the current laws and regulations relevant to their businesses, 68.7% of the surveyed replied that the existing laws and regulations should be abided by while 26.6% wanted flexible application of the laws and regulations. Those who demanded complete revision of the laws and regulations were only 4.8% of the questioned. Restaurant owners marked the high rate of 71.3% in the support of the existing laws and regulations, while tavern owners' supporting figure was around 60%. Analyzing the owners of restaurants and taverns who were ordered to suspend their businesses due to their violations of the relevant laws and regulations, it was found that female owners, owners with higher ages, less educated owners and owners of taverns were more likely to violate regulations than the others. And the older establishments, the smaller in size of establishment, and establishments with lesser number of employees were also found to be more likely to make violations. The reasons for the suspension of businesses were as follows in its order of percentage; violation of business hours(37.7%), selling of alcohol to minors(13.9%), abnormal business activities(12.7%), indecent entertainment(10.3%), employment of under-aged waitresses(8.3%). Public prosecutor's office, police, municipal office and district office of a city are empowered to enforce the relevant laws and regulations on restaurants and taverns and to suspend businesses, 43.3% of all the suspension of businesses were made by district offices and 42.5% of them by police, 48.8% of the respondents showed their preference for district office to other law enforcing agencies. Next came municipal office with 29.4% followed by public prosecutor's office(25.0%) and police(21.8%). 77.0% of the questioned answered that they would rather have paid fine than having been suspended of businesses. And most of the owner of the suspended businesses replied that the duration of suspension of businesses must be shortened. Most of the owners of restaurants and taverns who had experienced suspension of businesses(94.0%) replied that they would close their businesses for good if their businesses were suspended again. Asked to make any proposal or suggestion, 67.1% of the surveyed wanted that when any violation were found by the law-enforcing agencies the owners of the businesses were given a chance to correct it before being booked for violation.

돈지, 들깨유 및 달맞이꽃 종자유의 혼합급이가 흰쥐의 간장, 뇌 및 고환의 지질 성분에 미치는 영향

김성희,김한수,서인숙,정효숙,정승용 慶尙大學校 1992 論文集 Vol.31 No.2

돈지 및 들깨유와 달맞이꽃 종자유등 2종 식물 종자유와의 혼합급이가 흰쥐의 체내 조직의 지질 성분에 미치는 영향을 구명하기 위해 S·D계 숫쥐에게 돈지 2.55및 들깨유와 달맞이꽃 종자유의 혼합비율을 달리하여 4주간 급이 사육한 후 간장,뇌 및 고환의 지질 성분을 분석 검토한 결과는 다음과 같다. 간장의 총콜레스테롤 함량은 D군이 대조군에 비해 유의적으로 낮았으며, 인지질 함량은 각 군간의 유의적인 차이가 없었고, 중성지질 함량은 B및 C군이 대조군에 비해 현저하게 낮았다. 콜레스테롤 급이군의 간장 총콜레스테롤 함량은 대조군에 비해 c,d및 e군이 유의적으로 낮았고, 인지질 및 중성지질의 함량은 b군이 낮게 나타났다. 뇌의 총콜레스테롤 함량은 대조군에 비해 B및 C군이 유의적으로 낮았으며, 인지질 및 중성지질의 함량은 대조군에 비해 전 군이 유의적으로 낮데 나타났다. 콜레스테롤 급이군에 있어 뇌의 총콜레스테롤 함량은 각 군간의 유의적인 차이가 없었고, 인지질 함량은 c군이 중성지질 함량은 e군이 대조군에 비해 낮게 나타났다. 고환의 총콜레스테롤 및 인지질 함량은 각 군간의 유의적인 차이가 없었으나, 중성지질 함량은 대조군에 비해 전 군이 유의적으로 낮았다. 콜레스테롤 급이군은 콜레스테롤 무급이군과 거의 유사한 경향을 나타내었다. In order to observe the effects of the feeds mixed with the lard and two vegetable seed oils, which mixed with 2.5% lard and various level of perilla oil and evening primrose oil were administered to the male rats of Sprague Dawley for 4 weeks on lipid components of liver, brain and testes. In livers , total cholesterol contents were remarkably lower in the D group(2.5% lard+2.5% perilla oil+5.0% evening primrose oil,free cholesterol) than in the control group , and phospholipid contents were not significant difference in each groups. Triglyceride contents were remarkably lower in the B(2.5% lard+7.5% perilla oil+5.0% ,free cholesterol) and C(2.5% lard+5.0% perilla oil+2.5% evening primrose oil,free cholesterol) group than in the control group. In the supplemented cholesterol groups, total cholesterol contents were significantly lower in c(C group+cholesterol diet), d(D group+cholesterol diet) and e(2.5% lard+7.5% evening primrose oil,free cholesterol) group, phhspholipid and triglyceride contents were lower in the b group(B group+cholesterol diet) than in the control groups than in the control group, phospholipid and triglyceride contents in brain were considerably lower in the other groups than in the control group. In the supplemented cholesterol groups, total cholesterol contents were not significant difference in each groups. Phospholipid and triglyceride contents were conspicuously lower in the c and e groups. respectively. In testes, total cholesterol and phospholipid contents were not significant difference in the groups, but triglyceride contents were lower in the all groups except for control group The contents of total cholesterlo, phospholipid and triglyceride were similar between the supplimented cholesterol groups and the nonsupplemented cholesterol groups.

열화상카메라를 이용한 LCD-TV의 열분포 분석 및 방열 성능 향상을 위한 연구

김윤석,김용재,이정권,정두환,고한서 한국비파괴검사학회 2004 학술대회 논문집 Vol.- No.-

In these days, demand of a LCD-TV is remarkably increasing with development of the LCD technology. However, there are thermal problems for improvement of efficiecy for the LCD-TV. Thus, this research analyzed thermal problems such as convection and conduction heat transfer characteristics in the LCD-TV using an infrared (IR) camera. The results using the IR camera have been compared with those using T-type thermocouples. The results of the experiment showed that; 1. surface temperatures of inverter modules, CCFL and electrodes were higher than any other parts in the LCD-TV. 2. temperature distributions of the LCD-TV appeared asymmetrically based on the center line. 3. results of the two testing equipments agreed well.