KAERI 부지 주변의 환경선량 측정을 위한 온라인 감마선량 감시시스템

이정호,박두원,이원윤,이현덕,최용호,김삼랑,홍광희,이창우 대한방사선 방어학회 1994 방사선방어학회지 Vol.19 No.2

환경감마선량 변동을 감시하기 위해 한국원자력연구소 부지 주변에 온라인 감마선량 감시망을 구성하였다. 모니터링 포스트에 설치된 전리함 검출기에 의해 측정된 자료는 무선전송방식으로 중앙통제소에 전송되어 실시간으로 감시된다. 무선전송 방식은 자료의 전송, 처리 및 자자에 신뢰도가 높고 경제적이었다. 감시시스템은 급격한 선량증가시 조기경보체제와 연결할 수 있게 하였다. On-line gamma monitoring system around KSERI-site was set up to monitor the radiation fluctuations in environment. Data on gamma exposure rates measured by the ionication chamber in the monitoring posts are transmitted to a computer of central control station with radio telemetry transmission and reliable on handing and storing of data. This monitroing system can triger an early warning system in the event of abnormal radiation levels.

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

광중합형 구치부 수복재료의 중합수축량과 중합수축력

박성호,이순영,조용식,김수선,이창재,김영주,이봉희,이광성,노병덕 大韓齒科保存學會 2003 Restorative Dentistry & Endodontics Vol.28 No.4

The purpose of present study was to evaluate the polymerization shrinkage stress and amount of linear shrinkage of composites and compomers for posterior restoration. For this purpose, linear polymerization shrinkage and polymerization stress were measured. For linear polymerization shrinkage and polymerization stress measurement, custom made Linometer (R&B, Daejon, Korea) and Stress measuring machine was used (R&B, Daejon, Korea). Compositers and compomers were evaluated; Dyract AP (Dentsply Detrey, Gumbh, German) Z100 (3M Dental Products, St. Paul, USA) Pyramid (Bisco, Schaumburg, USA) Synergy Compact (Coltene, Altstatten, Switzerland), Heliomolar (Vivadent/Ivoclar, Liechtenstein), and Compoglass (Vivadent Ivoclar/Liechtenstein) were used. 15 measurements were made for each material. Linear polymerization shrinkage or polymerization stress for each material was compared with one way ANOVA with Tukey at 95% levels of confidence. For linear shrinkage ; Heliomolar, Surefil<Synergy Compact, Z100<Dyract AP<Pyramid, Compoglass F (p<0.05) For Shrinkage stress ; Heliomolar < Z100, Pyramid<Synergy Compact, Compoglass F<Dyract AP<Heliomolar HB, Surefil (p<0.05)

유기용제 취급근로자들의 요중대사물질과 말초임파구 자매염색분체교환 발현빈도에 관한 조사연구

김돈균,황인경,류철인,이수일,정갑열,이용환,이충렬,현원일,김석봉,전용덕 大韓産業醫學會 1990 대한직업환경의학회지 Vol.2 No.1

저자들은 유기용제 취급여성근로자 90명을 대상으로 1988년 7월부터 1989년 8월까지 말초혈액임파구에서의 자매염색분체교환의 발현빈도를 조사하고 이들의 업종, 근속연수, 요중마뇨산 농도등이 자매염색분체교환의 발현빈도에 미치는 영향을 조사하였으며 그 결과를 요약하면 다음과 같다. 1. 유기용제 취급근로자들의 말초혈액임파구에서의 자매염색분체교환의 발현빈도는 대조군에 비하여 유의하게 증가되었다. 2. 말초혈액임파구에서의 자매염색분체교환의 발현빈도가 가장 높은 업종은 프라스틱제품 제조업이었다. 3. 근속연수가 말초혈액임파구에서의 자매염색분체교환의 발현빈도에 미치는 영향은 현저하지 않았다. 4. 요중마뇨산농도와 말초혈액임파구에서의 자매염색분체교환의 발현빈도간에는 유의한 상관관계가 있었다. In order to know the possibility of utilizing the sister chromatid exchanges as an index which could evaluate the effect of organic solvents on the health in industrial workers, the authors studied the effects of the inductivity of sister chromatid exchanges in peripheral lymphocytes from 90 female workers expoxed to organic solvents and 20 non-exposed female workers. The results obtained were as follows : 1. The frequency of sister chromatid exchanges in peripheral lymphocytes from 90 female workers exposed to organic solvents was significantly increased in comparison with 20 control subject. 2. The frequency of sister chromatid exchanges was significantly increased in the workers who were employed in the manufacture of plastic materials than the other manufactures. 3. There were no significant differences in the frequency of sister chromatid exchanges by carriers of the exposed workers.

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˚

우리나라와 외국 안경사법의 비교 연구

李原鎭,成德鏞,金在道 대구산업정보대학 1994 논문집 Vol.8 No.-

In current, the Korea optician law includes a part of the eye test for fitting the glass power different from the optical dispensing law of foreign. The number of average population per a optometrist or a ophthalmologist are about 135 but those of the Korea are about 52,500. This shows the higher than the case of foreign. Besides, the optician in Korea takes charge of the eye test for the adjustment of the degree of glasses and all of the optical dispensing. Therefore, it takes the sufficient part of the national health of the eye. For making up for the weak point of Korea optician, a them of ophthalmic optics within junior college be required to project 4 terms to beyond 6 terms with a curriculum and practical training.

Ethanol 투여 및 한냉노출이 토끼 부신피질의 11β-Hydroxylase와 18-Hydroxylase 활성도에 미치는 영향

이덕용,성낙응 梨花女子大學校 醫科大學 醫科學硏究所 1983 EMJ (Ewha medical journal) Vol.6 No.1

Rabbit adrenocrtical mitochondria contains cytochrome P-450 dependent hydrox-ylase system, capable of catalyzing the hydroxylation as well as other modifications of variety of lipids and foreign compounds, including drugs, pesticides, carcino-gens. Ethanol enhances the activity of the microsomal enzyme system, and cold exposure increases various enzyme activity. The present study investigated the eff-ects of chronic ethanol administration and cold exposure on rabbit adrenocortical mitochondria 11β-and 18-hydroxylase activity, cytochrome P-450 and b_5 and AAF hydroxylation, serum cortisol level and lipid content of the adrenal cortex. The results obtained are : 1) When rabbits were administrated with 15% and 30% ethanol and were exp-osed to cold, the level of adrenocortical mitochondrial 11 β-hydroxylase activity was increased, but 18-hydroxylase activity was slightly increased only in the cold exposure group. This result corresponded with an increase of serum cortisol level. 2) When rabbits were administrated with ethanol and were exposed to cold, the level of cytochrome P-450 in adrenocortical mitochondria was increased, but cyt-ochrome b_5 level did not change. Ring-hydroxylation of AAF did not change, but N-hydroxylation was increased. 3) When rabbits were administrated with ethanol and were exposed to cold, the levels of total cholesterol and triglyceride in adrenal cortex was remarkably incre-ased, but phospholipid level was reduced.

外來語에 관한 硏究

李庸悳 啓明大學校 國際學硏究所 日本硏究室 1993 日本學誌 Vol.13 No.-