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洪性燦,柳宗賢,白承殷,白承和 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-
Today, many people stay lot of time sitting on chair in their life. If a sitting posture is not correct, there is some trouble with the waist. And if it goes on long time, sometimes it cause the hurts of waist or the deformded spinal column. A crouched posture is an obstacle to breath and it give rise to drowsiness because the lack of oxygen. Sitting posture is a habit so people can't feel it oneself and look over some kind of risks. It analyzes a condition of muscles by measuring EMG of spinal both side of spinal-bones. It can have a right sitting posture by the analyzing that increasing of muscles tention in one or the other side of muscles when the posture inclines on one side or ahead.
經濟水域에 관한 硏究 : 그 槪念의 史的發達을 中心으로 with special reference to the development of it's concept
洪性化 건국대학교 1977 學術誌 Vol.21 No.1
The 21st Certury will be an age of Sea. Not only we will obtain our necessary energy in the sea but also we will reside there. In this respect, it is proper to say that sea is a lifeline for the mankind. Therefore we can say that it is our fundamental duty to regulate the marine order and to formulate marine conditions for natural preservation. For such purposes the U N has last its 3rd Conference on the Law of the Sea to promulgate the marine orders from 1973 up to now. The basic problems which haul been suspended on the desk of the 3rd Conference on the Law of the Sea were the limit of territorial sea, the passage of international straight, the exploitation of deep sea-bed, the sea pollution by ship, scientific research of marine materials, and the problems of exclusive economic zone. Especially among them, we are interested in the proposals of 12 miles of territorial sea and of 200 miles of exclusive econonic zone. In this article, the writer attempted to bring light on the problem of exclusive economic zone, historical evolution of the concept of economic zone and relative proposals presented at the regional or international conferences. This article contains following contents : 1.Introductory Notes 2.Historical Background of Economic Zone 3.Decisions and Decralations of the Regional Commumities 4.The 3rd Conference on the Law of the Sea and Economic Zone 5.Conclusion.
고체상 추출법을 이용한 Phthalate Esters의 분석방법 연구
홍성희,한개희,이찬형,이순화 한국환경과학회 2003 한국환경과학회지 Vol.12 No.1
The study was carried out to evaluate the new analytical method of phthalate esters(diethyphthalate, di-n-butylphthalate, butylbenzylphthalate, bis(2-ethylhexyl)phthalate), one of the endocrine disruptors, which were performed by GC/MS-SIM(seleted ion monitoring). The phthalate esters were extracted from water samples using solid-phase extraction on C_18 columns. It investigated that the extraction recovert rate of phthalate esters with different solvents and solvent volume. The optimal solvent was dichloromethane and proper volume of dichloromethane for recovert of phthalate esters was 4 mL. There were good linearities(above R^2=0.9975) in the range 0.01∼0.50㎎/L,and the detection limits were below 0.01∼0.03㎍/L.The recovert rates,RSD and MDLs for phthalate esters were 80∼114%,5.0∼8.1% and 0.03∼0.11㎍/L,respectively. This method shows a good precision of phthalate esters.
재가노인의 일상생활동작수행의 의존성과 생활만족에 관한 연구
홍춘실,김현리,이상화 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.1
This study was conducted to analyse the correlation between the ADL dependency and life satisfaction. Data were collected from the 102 home resident eldery who have no dementia by cognition test. The age distribution f subjects were 65 years and over The data were collected from January 16th to February 15th, 1997. The instruments used for this study were a survey of general characteristics(10 items), physical function(15 items), life satisfaction(20 items). The data were analysed by using an SPSS program and included percentage, t-test, ANOVA & Pearson correlation coefficient. The result of the study are summarized as follows: 1. The mean of ADL dependency score was 5..912 in a possible range of 15 to 60 when 15 indicates high dependency and 60 incicates low dependency. 2. The mean of life satisfaction score was 20.363 in a possible range of 0 to 40 when 0 indicates low life satisfaction and 50 indicates high life satisfaction. 3. The relationship between ADL dependency and life satisfaction for old people in home proved to be of statistically highly negative correlation(r=-.2553 P=.01). 5. General characteristics related to life satisfaction was educational status, household status, economic status, personality, perception of health(P<0.05). In conclusion, it was identified that ADL dependency is the important variable influencing the life satisfaction of the elderly. Therefore, more efforts are needed to decreased the ADL dependency of the elderly to enhance life satisfaction of the elderly.
조성환,손화영,김혜성,최종윤,류시윤,박배근,윤원기,홍성혁,김덕환 충남대학교 수의과대학 동물의과학연구소 2002 動物醫科學硏究誌 Vol.10 No.-
Pilomatricoma was histopathologically diagnosed in a 2.5-year-old male Alaskan malamute. The patient was referred to Chungnam National University, Veterinary Medical Teaching Hospital with solitary, firm and well-circumscribed mass at shoulder. Grossly, the mass was dome shaped to tumor like and 10 x 8 x 5㎝ in size. Some lesions had gritty or bony consistency and was chalky when sectioned Histopathologic feature included mumerous clusters of tightly arranged, basaloid cells with evenly distributed chromatin and ghost cells were characterized by a central unstained zone. The ghost cells often become calcified and osseous metaplasia was also present.
SrCI_2:Eu^2+ 형광체의 광발광 및 광자극발광 특성
도시홍,서효진,김영국,김도성,김성환,김찬중,이병화,김완,강희동 한국센서학회 2002 센서학회지 Vol.11 No.6
고상반응법으로 SrCl_2:Eu^2+ 형광체를 제작하고, 제작한 형광체의 광자극발광과 광발광 특성을 조사하였다. SrCl_2:Eu^2+ 형광체와 광발광 및 광자극발광은 Eu^2+ 의 5d->4f 천이에 기인되었으며, 355 nm의 광으로 여기시켰을 때 광자극발광과 광발광 스펙트럼의 파장범위는 모두 380~440nm이었고, 피이크 파장은 407nm이었다. SrCl_2:Eu^2+형광체의 선량의존성은 2.5 mGy~200mGy영역에서 우수한 선형성을 나타내었으며, 상온에서 광자극발광의 fading은 20분에 60%이었다. SrCl_2:Eu^2+ phosphors were prepared by the solid phase reaction method, and their photostimulated luminescence(PSL) and photoluminescence(PL) characteristics were investigated. The PSL and PL peak of the SrCl_2:Eu^2+ phosphors are due to the 5d->4f transition of Eu^2+ ions in phosphors. The PSL and PL spectrum obtained by the 355 nm exitation was observed in 380~440 nm region with the peak at 407 nm. The dose response of the PSL phosphors were linear within 2.5 mGy ~ 200 mGy of 100kV X-ray. The fading of the phosphors at room temperature was approximately 60% after 20 min.