난소의 성국 낭성기형종에서 관찰된 전립선 조직 - 1예 보고 -

홍승모,최미선,한은미,이현경,노재윤 대한병리학회 1999 Journal of Pathology and Translational Medicine Vol.33 No.7

Mode 합성법을 이용한 머시닝 센터의 모델링에 관한연구

노승훈,조희재 國立金烏工科大學校附設生産技術硏究所 1997 産業技術開發硏究 Vol.13 No.-

This paper describes a new approach to the analysis of the dynamic response of a machining center. This approach, refered to as the mode synthesis or component mode sysnthesis, has many advantages compared with the conventional approaches. These terms are employed to sysnthesize the individual modes to analyze the vibration mode of the complicated structures. In this study a machining center is considered to present the basic ideas of the method, and its utility is investigated. The proposed idea is proved to be a very accurate estimate of the natural frequencies of the combined structures as well as the modes of vibrations.

MeV이온주입을 사용하여 Buried Layer를 포함한 CMOS Retrograde Well 제조시 발생하는 격자 결함에 관한 연구

盧在相,柳承翰,柳漢權 弘益大學校 科學技術硏究所 1998 科學技術硏究論文集 Vol.9 No.2

MeV ion implantation has been recently employed in the field of CMOS (complementary metal oxide semiconductor) retrograde well engineering. An issue on MeV ion induced damage is critical especially in forming a buried layer below the well. MeV B implanted buried layers were observed to show greatly improved characteristics of latchup suppression. Junction leakage current, however, showed a critical behavior as a function of ion does. The rod like defects were observed to be responsible for the leakage current. Rod-like defects were generated near the ??(projected range) and grown upward to the surface during annealing. According to cross sectional examination of each pit density, they were generated and propagated between 700。C and 800。C. They shrink or change into long, elongated dislocation loops at higher temperatures above 900。C. Results of SIMS (secondary ion mass spectroscopy) analyses and two-step-annealing (700。C/3∼6hrs.→900。C/1hr.) indicate that interstitial oxygens impede shrinkage of existing-g rod-like defects at higher temperatures above 900。C.

서울의 PPNG 발생 빈도(1990)

김재홍,김한중,노영석,김영태,김중환,황규홍,이정덕,백승철,김건우,조상현,김준영,김석민,김영호,김상순,이승한,김방순,전덕규,하상근 대한화학요법학회 1992 대한화학요법학회지 Vol.10 No.2

The prevalence of PPNG among pretreated gonorrhoeae cases isolates at the VD clinic of Choong-ku Public Health Center in Seoul has been studied and reported annually since 1981. In 1990, 162 strains of N.gonorrhoeae were isolated, among which 80 were PPNG. The prevalence of PPNG in Seoul showed increased tendency till 1987, thereafter, it has been stationary.

4개 간척 지구에 분포하는 식생과 토양 염류농도

이승헌,지광재,안열,노희명 한국환경농학회 2003 한국환경농학회지 Vol.22 No.2

토양 제염이 토양 화학성 변화와 식물 분포에 미치는 영향을 분석하여 간척농경지의 효율적인 관리방안에 대한 기초자료를 확보하고자 본 연구를 실시하였다. 방조제 체절전후 자연식생이 존재하는 9개 지점에서 식생분포 특징을 조사하고 2개 지점에 대해서는 토양과 식생가의 관계를 검토하였다. 9개 조사지점에서 11목, 14과, 46속, 49종, 8변종, 1품종등 총 58종류의 식생분포가 관찰되었고 자연상태를 잘 유지한 대호 식생보전구와 석문 국가공단 예정 부지에서의 출현종수가 다양하게 분포하였으며 해수를 유통시키고 있는 홍보지구나 만경강, 동진강 하구의 식생은 10 정도로 단순하였다. 9개 조사지점에서 가장 빈도가 높게 출현한 종은 벼과, 명아주과, 국화과에 속하는 나문재(Suaeda asparagoides (Miq.) Maakino), 객개미취(Aster tripolium L.), 갈대(Phragmites australis Trin.), 해홍나물(Suaeda maritima Dum.), 칠면초(Suaeda japonica Dum.), 천일사초(Carex scabrifolia Steud.) 토양에서 염류(Saline)토양으로 그리고 최종적으로 일반 토양으로 변화하였다. 명아주과의 식생은 염도(ECe)가 30 dS/m 전후인 토양에서 출현하여 10 dS/m까지 지속되고, 20dS/m전후에서 객개미취, 산조풀, 사데풀 등이 출현하였으며 10 dS/m 이하에서는 일반육상에서 볼 수 있는 식생종들이 출현하였다. 그러나 토양제염과 동시에 식생의 천이가 일어나는 것은 아니며, 외부에서 종자 등의 식물이 유입될 확률이 있어야하므로, 초기간척지의 식생을 조기에 정착하기 위해서는 토양검정을 통해 적정 염도에서 정착할 수 있는 식생의 인공식재 내지 종자 산파를 통해 촉진시키는 것이 효과적일 것으로 판단된다. This research was conducted to present reference data to be used as newly reclaimed tidal land management. We investigated vegetation succession at 4 reclaimed/reclaiming project areas and discussed relationship with soil and vegetation through investigation and analysis soil chemical characteristics at 2 areas. 14 families 58 kinds were investigated. Vegetation were various at Dea-Ho conservation plot and Seok-Mun National Industrial Area which are maintaining naturally. Vegetation were simple at Hong-Bo and Dongjin and ManKyong river areas which effected sea water. Common species that were investigated at 9 sites were Suaeda asparagoides, Aster tripolium, Phragmites australis, Suaeda maritima, Suaeda japonica, Carex scabrifolia. As soil desalinization progressing, soil classified at first saline-sodic soil, the next saline soil and then normal soil. Chenopodiaceae revealed at about 30 dS/m of soil W e and existed to 10 dS/m of soil ECe. At about 20 dS/m of soil ECe, Aster tripolium, Chlamagotis epigeios, and Sonchus brachyotus revealed and then non halophytes and commom plants at inland revealed at low soil ECe of about 10 dS/m However it was not to progress vegetation succession and soil desalinization at the same time, owing to input of seeds or plants etc from out-ecosystern So for promotion of vegetation at newly reclaimed tidal land, we proposed that it was very effective to plant artificially halophytes or suitable species through soil test.

STR 유전자의 개인식별력 측정을 위한 통계량

이혜승,이재원,한길로,황적준 大韓法醫學會 1998 대한법의학회지 Vol.22 No.2

When we intend to do the personal identification using DNA profiles, it will obviously be better to use as much information as possible. The power of identification is increased by using the genetic marker system such as VNTRs or STRs. Although STRs do not have many alleles per locus as VNTRs, these can be compensated by a large number of loci that are potentially usable. However, it will be more efficient to use a morphic loci. Therefore, prior to choose the genetic marker system of STRs for identification, it is essential to consider the statistical parameters of each STR locus, such as obs-H(observed heterozygosity), exp-H(expected heterozygosity), pM(probability of match), DI(discrimination index), PD(power of discrimination), MEC(mean exclusion chance), MEP(mean exclusion paternity), PIC(polymorphic information content) et al. In this article, we described the exact meaning of statistical parameters for the purpose of identification.

홉핑동작과 달리기동작의 운동역학적 비교 분석 : Elementary School's Children

김승재,최지영,김로빈 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

The purpose of this study was firstly to investigate to investigate the biomechanical differences of motor developmental process by examining the movement of body segment and joint and the the pattern of ground reaction force and joint moment according to age during standing long jump in elementary school's children and secondly to provide fundamental data for scientific teaching method in physical education subject of teaching field. The subjects were divided into both grade 2 group and grade 6 group. which were consisted of 6 subject respectively. A digital video camera for kinematic data and a force plate for kinetics data were used during standing long jump. For the movement analysis two dimensional cinematographical method(Arial Performance Analysis System : APAS) was used and for the calculation of the kinematic variables a self developed program was used with the LabVIEW 6.1 (Laboratory Virtural Instrument Engineering Workbench) graphical programming (Johnson, 1999) program. independent samples t-test in SPSS package was used to test the biomechanical difference between two variables. The kinematics and kinetics results of this study were as follows. 1. while jumping distance, the horizontal displacement showed significant different between grade 2 group and grade 6 group, 2. Three were no significant difference between grade 2 group and grade 6 group each joint angular displacement however the hip joint and ankle joint showed more extended in grade 6 group. 3. In angular velocity the thigh segment, shank segment and foot segment velocity did not show significant differences. but foot segment angular velocity increased from minimum knee angle to take-off 4. The ground reaction force did not show significant difference between grade 2 group and grade 6 group, but the maximum peak value of the ground reaction force was smaller than 2 grade group. 5. Three were significant difference in hip and knee joint momentum between grade 2 group and grade 6 group.

태권도 차기기술의 관절과 분절 운동의 운동학적 정의

김승재,김로빈,신제민 한국운동역학회 1998 한국운동역학회지 Vol.8 No.2

The studies on Taekwondo kicking techniques have not been practical to apply to the teaching or coaching fields because they merely focused on the kicking leg and didn't define sufficiently overall motion patterns. The main reason for this is that there has been no useful method to describe complex Taekwondo kicking techniques such as Cardan angle which is effective to represent joint motion due to the production of three independent rotations about three independent axis. Therefore, the purpose of this study was to kinematically define the joint and segment motion by using Cardan angle during Dolgae-chagi(360 ˚ turning kick), Dwi-huryeochagi(backward thrashing kick) , and Dwi-chagi(back kick) in order to provide practical information for the Taekwondo teaching field. Six male elite Taekwondo players with the height of 177±5.6 cm and the weight 72.2±7.6 Kg were filmed using three-dimensional cinematography during Dolgae-chagi, Dwi-huryeochagi and Dwi-chagi. The joint and segment motion of the three Teakwondo kicking techniques was represented with Cardan angle calculated by the normal vector analysis. With Cardan angle the joint and segment motions of the three Taekwondo kicking techniques are defined as the following table.

평지와 오르막경사의 트레드밀 걷기와 달리기 동안 발보장구가 발바닥근막염과 관련된 발아치 스트레인에 미치는 영향

김승재,Stefanyshyn, Darren,김로빈 한국운동역학회 2005 한국운동역학회지 Vol.15 No.1

S. J. KIM, D. Stefanyshyn, R. B. KIM. Effects of Foot Orthotics on the Foot Arch Strain related to PIantar Fasciitis During Treadmill Level and Uphill Walking and Running. Korean Journal of Sport Biomechanics, Vol. 15, No. 1, pp. 155-176, 2005. There is some evidence that one of major factors to produce plantar fasciitis depends on the magnitude of the foot arch strain. The orthotics that can reduce the foot arch strain during locomotion may be effective to prevent or treat plantar fasciitis. Therefore, the purpose of this study was to investigate the effect of control condition and three types of foot orthotics on 3-dimensional foot arch strain that can produce plantar fasciitis during treadmill level and uphill walking and running. Sixteen male subjects are recruited and the arch length and height strain according to three types of foot orthotics with respect to control condition were measured by using two digital video cameras. The first hypothesis which the comfort of foot orthotics would be increased from arch pad, half length orthotics to full length orthotics was mostly accepted. It suggested that the types of the foot orthotics could be properly prescribed according foot regions that is pain or abnormal. The second hypothesis which the foot arch strain can be reduced by foot orthotics during level heel-toe walking and running and the third hypothesis which the foot arch strain can be reduced by foot orthotics during uphill heel-toe walking and running were rejected. The foot arch length and height strain during walking and running showed small and subject-specific characteristics and could not be optimal biomechanical variable to prove the overall comfort. The forth hypothesis which the foot arch strain cannot be reduced by foot orthotics during uphill toe walking and running was accepted. With the foot arch length and height strain during uphill toe walking and running the windlass mechanism suggested by Hicks can be explained successfully and excessive uphill toe walking and running can be one of cause of plantar fasciitis. The dynamic investigation on the foot arch such as walking and running should be carefully observed with integrated insights considering ligaments and foot bones as well as plantar fascia, extrinsic muscles and tendons, and intrinsic muscles and tendons.

보행시 보폭에 따른 지면반력의 변화

김로빈,김승재 한국운동역학회 2001 한국운동역학회지 Vol.10 No.2

The purpose of this study was to examine the effect of step length on the ground reaction force. The subjects were 10 undergraduate and graduate students in their 20s with normal legs. The subjects were individually tested by the running timer at the walking speed of 1.34㎧. The step length was regulated to -10% of normal, normal and +10% of normal step length using foot print. The ground reaction force of each subjects were measured by 600㎐ sampling frequency. The raw data were analyzed by LabVIEW Graphical Program and these data were analyzed by ANOVAs and Scheffe'. The results of this study were as follows: 1. The vertical ground reaction force at the point of Fz1 increased as the step length increased but decreased at the point of Fz2. 2. The antero-posterior component of ground reaction force increased at the point of Fy1 and Fy3 as the step length increased. 3. The related time of the vertical ground reaction force appeared quickly at Tz1 as the step length increased. 4. The related time of the antero-posterior component of the ground reaction force did not show significant difference. But there was a pattern found indicating the related time to Ty3 quickened as the step length increased.