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.

서울시 재건축에 미친 관련 법령의 영향요인 분석

한수진,박신영,윤영호 대한건축학회 2004 대한건축학회논문집 Vol.20 No.6

The aim of this study is to prove that reconstruction policy has more effect on reconstruction projects than market by analysing the characteristics of reconstruced projects in Seoul from 1987 to 2002. The average of the expected life span of reconstructed housing is only 20.5 year. 296,637 housing unit was newly constructed where 163,485 housing unit was demolished in the case of Seoul. According to the change of reconstruction policy of housing, the number of reconstruction union and cases has been changed, The less regulated, the number of them increased while the more regulated, the number of them decreased.

관상동맥 스텐트 내 재협착의 발생에 미치는 임상적 관동맥 조영술적 요인들

윤혁준,김기식,박형섭,이영수,현대우,한성욱,허승호,김윤년,김권배,박남희,원경숙 대한순환기학회 2003 Korean Circulation Journal Vol.33 No.12

FEM에 의한 Al07075/CFRP 적층재의 탄성계수 해석

윤한기,안광주,김연겸,박준수 東義大學校産業技術開發硏究所 1998 産業技術硏究誌 Vol.12 No.-

As for the properties on both the aluminum and the CFRP which are used to make A17075/CERP multi-layered hybrid composites, CRALL(carbon reinforced aluminum laminate). For CRALL specimen, FEM analysis is compared with experimental results. It is shown that the rule of mixture is well agreed with experiment result in A/C 0001 layered 1 ply. However, differences are conceivable in A/C 0003 and A/C and A/C 0005 because of the effect of fiber volume fraction. In the A/C 0001 specimen case, the elastic modulus of the unnotched and circular notched CRALL specimen by FEM analysis are agreed with the experimental results, but that of A/C 0003 and A/C 0005 specimens had high CFRP volume fraction doesn't agree with experimental results.

Porphyromonas endodontalis 의 Lipopolysaccharide가 섬유아세포의 세포막 투과성에 미치는 영향

윤수한,김민겸,김재희 大韓齒科保存學會 1999 Restorative Dentistry & Endodontics Vol.24 No.3

혐기성세균모델을 이용한 봉함제(Sealer)의 미세누출에 관한 연구

윤수한,오태석,배용규 大韓齒科保存學會 2000 Restorative Dentistry & Endodontics Vol.25 No.2

뒤 공중 돌기 유형에 따른 착지동작의 성공요인 분석

한윤수 한국운동역학회 2004 한국운동역학회지 Vol.14 No.1

Y. S. Han, Analysis of Successful Landing by the Type of the Salto Backward. Korean Journal of Sport Biomechanics, Vol. 14, No. 1, pp. 1-12, 2004. The purpose of this study is to provide training materials for practical use by investigating the kinematical variables of the successful landing by the type of the salto backward such as Tuck, Pike. For this study, the subjects are 4 male national gymnasts using 3-dimensional cinematographic method. Based on the results of this study, the conclusions are drawn as follows. 1. In flight phase, Tuck and Pike show fast extension after completing minimum angle of hip joint passing through the peak. It is very important factor to control body with gaining time before landing while decreasing the velocity of flight rotaion. 2. In Landing phase, the angles of each joint for successful landing are shown as 92deg~100deg for knee angle, 52deg~57deg for hip angle, and 56deg~70deg for shoulder angle. 3. Tuck and Pike dramatically decrease the height of COG, and horizontal/vertical velocity of COG from TD to LD. Also, it is shown that the knee angle, the hip angle and the shoulder angle decrease drastically. On the other hand, the angular velocity of trunk rotation shows negative direction and due to this, the angle of trunk rotation is shown as re-flexion.

Sealapex의 근관 폐쇄 효과에 관한 실험적 연구

윤수한 大韓齒科保存學會 1993 Restorative Dentistry & Endodontics Vol.18 No.2

Sealapex was comparied with a zinc oxide euaenol sealer over a 24-wk interval to examine solubility in an in vitro situation. After obturation with gutta percha and the appropriate sealer, speciemens were immediately immersed in a saline solution to challenge the solubility oh the sealers. The solutions were changed weekly to allow for a continued dissolution of the sealers. Aget immersed in methylene blue solution for 3 days, the speiemens were made transpatent by a clearing process. Microscopic examination was used to determine the lenear penetration of dye for each speciemen. Result revealed that sealapex had no greater dissolution than ZOE. Key words : Z.O.E., Sealapex, Solubility, Clearing process, Dissolution

임신 40주와 출산 후 6주에 있는 20대 임산부 보행의 역학적 특성 비교

윤희중,문동안,정남주,금명숙,이경식,유실,김영란,한윤수 한국운동역학회 2000 한국운동역학회지 Vol.10 No.1

본 연구는 임신 40주와 출산후 6주간에 있는 임산부의 보행 동작의 특정을 규명함으로써 이와 관련된 연구자들에게 기초자료를 제공하고자 실시하였다. 이를 위해 임신 4주에 있는 임산부를 대상으로 1차 실험을 실시하였으며 동일한 대상자를 출산후 6주에 2차로 실험하여 자료를 수집하였다. 디지타이징 시 오차를 최소화하고 인체관절점의 분별을 위해 21개의 반사마커를 부착하였다. 10m의 보행주로를 걷는 동안 두 대의 비디오카메라를 이용하여60Hz로 자료를 수집하였으며 동시에 100Hz 지면반력자료를 수집하였다.수집되어진 자료는 DLT 방법을 사용하여 분석하였으며 이의 분석에 Kwon3d 프로그램을 활용하였다. 분석결과 다음과 같은 결론을 얻었다. 1. 임신 40주와 출산 후 6주의 보행 시 지지시간과 스윙시간의 비율이 다르게 나타났으며 보폭과 보간, 활보장은 임신 40주에서 더 큰 값을 보였다. 상체 전경각 역시 임신 40주에서 더 큰 값을 보였다. 힙관절, 무릎관절, 발목관절각도는 S1이 출산후 6주에서 큰 값을 보인반면 S2는 출산전후에 큰 변화를 보이지 않다. 2. 상하지면반력의 경우 FP1과 FP2는 임신 40주보다는 출산 6주에서 큰값을 보였지만 FP3는 임신 40주에서 보다 큰값을 보이고 있었다. 전후지면반력의 경우 출산전과 후 모두 Fy2에서 보다 큰 값을 보이고 있었다. This Study was to investigate kinematical characteristic comparison of the gait pregnant 40weeks and after delivery 6weeks 20´s women and provide the basic data. To accomplish this study, in the first, carry out an experiment with the pregnant women in the pregnant 40weeks on the videotape, and than the second, make an experiment with the kinematic data. Kinematic data were filtered with a low-pass, fourth-order Butterworth filter with an effective cut off frequency of 6Hz. The conclusions were drawn as follows; 1. Floor contact Periods(stance and swing rate) were differed from before and after the delivery and a pregnant 40 weeks was greater than after delivery 6 weeks in the step, width, stride. Also, a pregnant 40 weeks was greater than after delivery 6 weeks in the front angular. And the other angular components were represented similar pattern. 2. In the vertical load, delivery 6 weeks was grater than a pregnant 40 weeks in the FP1(first peak) and FP2(valley). And FP3(second peak)was represent that a pregnant 40 weeks was greater than delivery 6 weeks. Also, in the horizontal shear, Fy2(progressional force)was greater than Fy1(breaking force) about time of the delivery.

Praziquantel이 肺吸蟲의 幼若成蟲에 미치는 영향에 관한 電子顯微鏡的 硏究

尹疇植,金洙鎭,林漢鍾 고려대학교 의과대학 1984 고려대 의대 잡지 Vol.21 No.1

This study was undertaken to observe the morphological changes of young adult worms(45th day after infection) of Paragonimus westermani obtained from experimentally infected dogs after treatment with praziquantel. For this study 8 dogs were artificially infected with metacercariae isolated from crayfish, Cambaroides similes. After 45th and 90th day of infection, three dogs were each given praziquantel 3×25 mg/kg×1day respectively, and autopsied at 24 hours after the last medication. With the young adult worms from the cysts in the lungs of treated dogs, the fine structural changes were observed by means of scanning and transmission electron-microscope. The findings were compared with those of adult worms in treated and untreated control host. The results are as follows: 1. The majority of the young adult worms obtained from the treated dogs showed a large balloon-shape structure on the tegumental surface between oral and ventral suckers. This structural change has never been reported in the adult worms obtained from the treated hosts. 2. The scanning electron-microscopy revealed formations of bleb-like structures on sensory papillae near the oral and ventral suckers. 3. The transmission electron-microscopy showed that the axons of the nerve endings in the sensory papillae around two suckers were degenerated and formed large vesicles which upon rupturing on the tegumental surface have formed bleb-like structures. 4. The numerous mitochondriae in the tegumental syncytium of the worms in treated hosts appeared to be degenerated and formed small vacuoles, and a different size of vacuoles interspersed in the distal part of the tegumental syncytium. These vacuoles were fused to each other and led to the disruption of the apical region of tegumental syncytium along the basement layer, which was finally detached from the circular muscles of the worm. 5. Many host cells (granulocytes) invaded and destroyed the degenerated tegument by the occurrence of blebs or the exposed muscular layer of the worm after exfoliation of the tegument.