뇌 아밀로이드 혈관병과 고혈압성 뇌출혈의 감별에 있어서 Apolipoprotein Eε4와 점상 출혈 분포의 유용성

김용범,이광호,이수주,나덕렬,조수진,정진상,이원용 대한신경과학회 1999 대한신경과학회지 Vol.17 No.1

Ni-Zn 페라이트의 透磁率과 磁氣抵抗에 미치는 添加物의 影響

강재덕,최희태,서강수,신용진 明知大學校 産業技術硏究所 1990 産業技術硏究所論文集 Vol.9 No.-

This paper is studied on the effects of additive of permeability and magnetic reluctance of Ni-Zn ferrites. Ni-Zn ferrites was composed of 20mo1% NiO, 30mo1% ZnO, 50mo1% Fe₂O₃, and 0.0025n1o1%, 0.005mo1%, 0.01 mol% ??, Bi₂O₃, ?? were used as minor additive Sintering was carried oui at 1100℃. As results from the experiments, the initial permeability was proportional inversely to magnetic reluctance. It was observed that the better magnetic properties of initial permeability anti magnetic reluctance could be achieved by the additive ??.

착용후 연성 콘택트렌즈의 산소투과율과 광투과도에 관한 연구

李原鎭,成德鏞,李明昊 대구산업정보대학 1995 논문집 Vol.9 No.2

Many kinds of eye disease induced from wearing of soft contact lens which are adsorbed proteins. We require the soft contact lens which are high oxygen permeability and comfort for the keep wearing. Therefore, In this paper I studied the relation of the optical transmission and oxygen permeability of fresh lens and six-months weared lens and protein-adsorbed and cleaned lens. The Oxygen permeability and optical transmission were measured with the Oxygen-film-Permeabilitymeter Seikake and Genesys^(TM) 5 Spectrophotometer at 570nm. In this study, it used the soft contact lenses of two type and obtained the result as follows: 1. The oxygen permeability of fresh soft contact lens of type A are 0.330X10^(-10)㎤/㎠secTorr and six-months weared lens of type A is 0.253X10^(-10)㎤cm/㎠secTorr, which decrease about 27% by comparision with fresh. Optical transmission of the six-months weared lens is lower 1.60% than the fresh soft contact lens. 2. The Oxygen permeability of fresh soft contact lens of type B are 0.238X10^(-10)㎤cm/㎠secTorr and six-months weared lens of type B is 0.193X10^(-10)㎤cm/㎠secTorr, which decrease about 19% comparsion with fresh. Optical transmission of six-months weared lens is lower 1.60% than fresh soft contact lens. 3. The oxygen permeability of the fresh type A soft contact lens adsorbed artificial protein are 0.232X10^(-10)㎤cm/㎠secTorr(type A), which decreased about 30% comparesion with the fresh type A soft contact lens and the fresh type B soft contact lens adsorbed artificial protein are 0.168X10^(-10)㎤cm/㎠secTorr, which decrease about 29.4% camparision with the fresh type B. After soft contact lens cleaned protein oxygen permeability of type A are 0.300X10^(-10)㎤cm/㎠sec-Torr and type B is 0.231X10^(-10)㎤cm/㎠secTorr. In oxygen permeability aspect, these show that soft contact lens are not cleaned protein about 9% in type A and about 3% in type B.

Cu-Arc를 이용한 Cherty Rock의 분광 분석

이원진,성덕용,강성수 대구산업정보대학 2000 논문집 Vol.14 No.2

In this study, the element of Cherty Rock was analyzed using the Cu-Arc. This material contains the Vanadium, Caesium, Thorium, Lutecium, Tin and Ytterbium. But silicon was not detected because of film sensitivity.

방해석의 복굴절에 의한 편광

李原鎭,成德鏞,全永基,申再鉉 대구산업정보대학 1998 논문집 Vol.12 No.2

It was investigated the variation of polarization by the double refraction of light for a calcite crystal. In a calcite there is a single direction called the optics axis, which is an axis of symmetry with respect to both the crystal form and the arrangement of atoms. For a point in calcite, there are three principal sections, one for each pair of opposite crystal faces. A principal section always cuts the surfaces of a calcite crystal in a parallelogram withe angles of 71˚ and 109˚. When a beam of plane-polrized light is directed along the optic axis of calcite crystal, the plane of polarization turns steadily about the direction of the beam and emerges vibrating in some other plane than that at which it entered. The law of Malus is ralationship how the intensity transmitted by the analyzer varies with the angle that its plane of transmission makes with that of the polarizer. The pane polarization, θ was obtained from the law of Malus was 20.2˚

대퇴동맥을 통한 경피적 관동맥 중재시술 환자의 천자부위 지혈을 위한 Angioseal^(�) 사용과 고식적 용수 압박법의 비교 : 전향적 연구

김용훈,권현철,김필호,안석진,유철웅,최진호,이상철,김준수,김덕경,전은석,이상훈,홍경표,박정의,서정돈 대한내과학회 2004 대한내과학회지 Vol.66 No.5

목적 : 경피적 관동맥 중재술은 최근 양적 및 질적으로 급격한 발전을 보였지만 시술 시 천자부위의 혈관 합병증은 아직 해결해야 할 문제점이다. 저자들은 대퇴동맥을 통한 경피적 관동맥 중재술을 환자에게 천자부위 지혈을 위한 혈관폐쇄기구인 안지오실의 안전성과 유용성을 고식적인 용수 압박법과 비교 연구하고자 하였다. 방법 : 2002년 4월부터 2003년 5월 사이에 삼성서울병원 심장혈관센터에서 대퇴동맥을 통한 경피적 관동맥 중재술을 성공적으로 시행한 200명의 환자(안지오실 사용군: A군, 100명, 고식적 용수압박법 사용군 B군, 100명)를 대상으로 시술 후 주요 합병증 및 경한 합병증, 지혈 후 환자가 자리에 앉기까지의 시간, 보행개시 가능시간, 총 재원 기간과 시술 1주 후의 합병증을 전향적으로 조사하여 비교 연구하였다. 결론 : 두 군에서 연령, 성별, 기저질환, 심혈관 질환의 위험요소, 시술의 종류, 시술 중 사용한 헤파린의 양, clopidogrel의 양, ticlopidine의 양, 지혈 시 수축기와 확장기혈압, ACT (activated clotting time)는 차이가 없었다. A군이 B군에 비해 시술 후 자리에 앉기까지의 시간 (A군: 4.3±0.3시간, B군: 13.7±0.8시간, p=0.004) 및 보행개시까지의 시간(A군: 6.8±0.5시간, B군: 18.8±2.1시간, p=0.013)이 유의하게 짧았다. 시술 후 주요 합병증은 두군 모두에서 관찰되지 않았으며, 경한 합병증의 전체발생은 A군에서 유의하게 적었다(A군: 28명, B군: 19명, p=0.003). 반상출혈의 경우는 A군에서 유의하게 낮았지만(A군: 3명, B군: 12명, p=0.01), 혈종, 출혈의 발생은 두군간에 차이가 없었다. 총 재원기간에는 두 군간에 차이가 없었다(p=0.239). 시술 1주 후 경과관찰에서 주요합병증은 역시 두 군 모두에서 관찰되지 않았으며, 경한 합병증의 전체발생은 두 군에서 차이가 없었다(A군: 15명, B군: 13명 p=0.418), 반상출혈의 빈도는 차이가 없었지만 혈종의 발생은 A군에서 더 낮았다(A군: 2명, B군:6명, p=0.004). 두 군 모두에서 출혈은 발생하지 않았다. 결론 : 대퇴동맥을 통한 경피적 관동맥 중재술을 시행한 환자에서 안지오실의 사용은 고식적 용수 압박법에 비해 환자의 침상 안정시간을 줄여 조기 활동개시가 가능하게 하였으며 국소합병증의 위험도를 일부 낮추어, 시술에 따른 환자의 불편을 현저하게 감소시킬 수 있다고 할 수 있을 것으로 기대된다. Background : Although the number and the quality of percutaneous coronary intervention have been recently increased dramatically, the vascular complication at puncture site is still the major cause of patients' morbidity. We evaluated the safety and efficacy of newly of newly-developed collagen-based arterial closure device, Angioseal after transfemoral percuatenous coronary intervention. Methods : This study was designed as a prospective single center non-randomized comparative study. A total 200 patients undergoing transfemoral percutaneous coronary intervention were enrolled between April 2002 and May 2003. They were divided into two groups; Angioseal group (group A, n=100) and manual compression group (group B, n=100). The baseline clinical and angiographic characteristics were reviewed. The time to sit up, the time to ambulation, the duration of hospital stay, major and minor vascular puncture site complications were monitored. The patients were followed-up for 1 week after procedure by telephone. Results : The baseline clinical characteriwtics, clinical diagnosis, cardiocascular risk factors, typesof procedure, doses and numbers of anticoagulants were similar between two groups. The blood pressure and activated clotting time were also similar. The time to sit up (group A: 4.3±0.3 hours, group B: 13.7±0.8 hours, p=0.004) and the time to ambulation (group A: 6.8±0.5 hours, group B: 18.8±2.1 hours, p=0.013) were shorter in group A. No major vascular complications were noted. The incidence of hematoma and bleeding were not significantly different between two groups. The incidence of ecchymosis, however, was significantly lower in group A (group A:12%, group B: 3%, p=0.001) The duration of gospital stay was similar between groups. During 7 days of follow-up period incidence of hematoma was significantly lower in group A (p=0.004). Although the incidence of ecchymosis was not significantly different between two groups. Conclusion : The angioseal may be associated with earlier ambulation and less patients' morbidity with low incidence of local complication rate compared to manual compression after transfemoral percutaneous coronary intervention.

지역감정 해소를 위한 스포츠의 필요성에 관한 연구

조동진,안용덕,김갑수 조선대학교 스포츠과학연구소 1999 스포츠科學硏究 Vol.10 No.-

Though the pride of creating the regime by a region may offset the past material and economic alienation, the direction of national policy by new regime toward democratization directs to exterminate the regional emotion which is the absolute obstacle of national unity and reunify the South and North Koreas. Therefore this study investigates the cause of regional conflicts and regional emotion between west and east regions and examines the actual necessity of sports for the social unity before seeking the methods to exterminate the regional emotion with sports First, it grasps the type and cause of regional conflicts by examining and researching the existing research theses and literatures, carries out the questionnaire with the content, Can sports exterminate the regional emotion, with the university students in Pusan-Kyungnam region and Kwangju-Chonnam region and then obtains the following conclusions with the possibility to exterminate the regional emotion by sports. 1. The types of typical conflicts in Korea are labor-management conflict, income classes conflict, sexual conflict, generation conflict and regional conflict and the most serious social problem among these is the regional conflict. 2. The regional emotion means that the regional consciousness which is hope and desire for local community and a kind of condensed social energy shown in the relation to other regions are expressed to the people of other regions in exclusive and unfair way. 3. The use of sports can be the effective means to exterminate. In this case, the sports game of regular exchange type between amateurs not by pros can double its effects.

소아 혈중 연농도에 관한 조사

이용환,이덕희,김진하,박인근,한태영,장세한 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.1

지리적 위치에 따라 소아들에 있어서 혈중 연농도에 차이가 있는지의 여부와 소아들의 혈중 연농도의 참고치 계산을 위한 기초자료를 얻기 위하여 6-8세의 도심지역 거주 소아 102명과 교외지역 거주 86명, 총 188명을 대상으로 조사하여 다음과 같은 결과를 얻었다. 1. 전체 소아들의 평균혈중 연농도는 산술평균이 7.24, 기하평균이 6.92 ㎍/100㎖이었으며 남자가 여자보다 통계적으로 유의하게 더 높았다(p<0.05). 2. 도심지역과 교외지역 거주 소아들의 혈중 연농도는 도심지역거주 소아가 남, 녀 모두에서 교외지역 거주 소아보다 통계적으로 유의하게 더 높았다(p<0.05). 3. 혈중 연농도에 따른 분포에서는 <5 ㎍/100㎖군에 조사대상자 188명의 17.02%가 분포되었고 도심지역(5.88%)보다 교외지역(30.23%)에서 더 많은 분포를 보였으며, 10 ㎍/100㎖이상 군에는 전체 소아의 12.23%가 분포하고 있었으며, 도심지역(20.59%)이 교외지역(2.33%)보다 더 많이 분포하고 있었다. 이상의 결과에서 볼 때 도심지역 거주 소아들에 대한 연폭로의 관리대책이 시급히 마련되어야 할 것으로 판단된다. The authors conducted this study to evaluate some differences in blood lead levels between inner-city and suburban children and obtain the basic data of the reference value of the blood lead concentrations in children. The subjects were composed of 102 children residing in inner-city and 86 children in suburban. Their age range were 6 to 8 years old and the obtained results were as follows; 1. The arithmetic means of the blood lead level in male and female, male, and female children were 7.24, 7.40, 7.08 ㎍/100㎖, and geometric means were 6.92, 7.08, 6.76㎍/100㎖, respectively. 2. The children residing in inner-city had the higher blood lead levels both male and female than suburban children with statistical significance(p<0.05) 3. Seventeen percent of the total subjects had lead concentrations < 5 ㎍/100㎖, and 5.88% of inner-city children and 30.23% of suburban children had this lead values. But in ≥10㎍/100㎖ group, the inner-city children(20.39%) were more distributed than suburban children(2.33%), and 12.33% of total subjects had this lead values.

근거리 수치화상에 의한 정밀측정에서 자유망 번들조정의 효과

이진덕,최용진,장기태 金烏工科大學校 産業技術開發硏究院 1999 産業技術開發硏究 Vol.15 No.-

The vision metrology system employing still-video imagery for industrial measurement has the potential of automated measurement with high accuracy. This paper was focussed on ascertaining the impact of free-net technique in self-calibrating bundle adjustment. The practical measurement of a three dimensional test field was conducted using a vision metrology system which was composed of a high resolution still-video camera, a PC-based image mensuration algorithm and a self-calibrating bundle adjustment program. As a result, free-net technique, which does not require any control points with pre-known object space coordinates, went up about 12% in accuracy compared to traditional standard technique. Therefore free-net bundle adjustment is expected to be able to be used efficiently for industrial applications such as dimensional inspection, deformation monitoring and so on.

CoFeSiB아몰퍼스리본의 자기감성기능

강재덕,임재근,신용진 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-

This thesis has studied the magnetic sensing function by using an amorphous magnetic ribbon which has a zero-magnetostrictive composition its magnetic properties through the annealing technique in the demagnetization were measured in the magnetic field. We used a sample of composition (Fe0.06Co0.94)79Si2B19 with a thickness, length and width were 12㎛, 5㎝ and 2.5㎜, As a result of measuring the hysteresis curve of the sample which was examined inducing the pinning site of magnetization filed, the sample which was carried out the two annealing step shows that the LBJ(Large Barkhausen Jump) effect was confirmed at the reversal magnetization field Hw of 0.5 Oe and observed by the variation of the magnetic domain with the process of magnetization. And the sample with was used in this experiment was confirmed to have a magnetic sensing function.