『구입유물공개전』 전시유물 보존처리 : 금속유물을 중심으로

권혁남,이용희,김종오 국립중앙박물관 2000 박물관보존과학 Vol.2 No.-

국립중앙박물관에서는 국내외에서 구입한 유물들을 전시하기 위하여 보존처리를 실시하였다. 처리유물은 금속제 유물을 비롯하여 목제, 회화, 목·칠기 등 다양한데, 이중 금속유물 42점의 보존처리 내용을 재질별로 소개하였다. 유물의 현재 상태를 파악하기 위해 현미경 조사 및 X-선 촬영을 실시하였으며 재질에 따라 이물질 제거 방법, 안정화 처리 방법 등의 처리 방향을 설정하였다. 또한 역사적 자료를 보존하고 일반인들에게 전시할 수 있는 조치를 취하였다. For exhibition, conducted conservation treatment for a variety of collections acquired at home and abroad such as metallic objects, wooden-ware, paintings and lacquer-ware. Conservation treatment methods for 42 metallic objects were introduced for material types. X-ray and microscopic method were used to identify the current state of the collections and in some case if necessary, various foreign particle removing and stabilization method were used depending on material type. Historical data were stored and exhibited to public.

창원지역 중고등학생들의 환경보전에 관한 의식분석

권혁범,이동근,김종오 경상대학교 환경보전연구소 1998 環境保全硏究所報 Vol.6 No.1

This study has been carried out to investigate the consciousness of the middle and high school students in Changwon city on environmental protection. A certain logical questionnaire containing various environmental items was answered by the 432 students, and the results could be summarized as follows : 1. The students were very interested in environmental problems, and they also worried about environmental problems more deeply than the other problems such as a threat of war, a population explosion and a exhaustion of resources. 2. Most of the students took the underground water as a drinking water and they didn't believe that the water supplied by the local government is safe enough for drinking. Therefore, the administration has to try to purify water further in order to recover the belief on environmental policies of the local government. 3. Most of the students said that the more academic subjects associated with environmental problems are needed to obtain detailed knowledges about environmental problems and protection. They generally meet the environmental problems through the mass communications such as TV and radio. When the academic subjects concerning about environmental problem are open in the curriculum, they wanted to attend the class readily. 4. The students recognized that environmental problems are serious. Although they think that they should do their best to solve the environmental problems, they actually were not active enough to put their thought in practice.

상아질 접착제의 중합 시간 조절에 따른 복합레진의 중합 수축 방향의 변화

배지현,오명환,김창근,손호현,엄정문,조병훈,권혁춘 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.4

The purpose of this study was to evaluate the effect of adhesive curing timing on the direction of polymerization shrinkage of light-curing composite resin. In this study, the curing times of adhesive and composite resin were measured by differential scanning calorimeter(DSC). 28 extracted human molars were embedded in clear resin and box-type cavities were prepared. Based on DSC data. the experimental teeth were divided into 4 groups. Group 1: no bond: Group 2: late curing: Group 3: Intermediate curing: Group 4: Early curing. After treating with adhesive, the buccal cavities were filled with Z-100 hybrid composite resin and the lingual ones were filled with AEliteflo flowable composite resin. The depressions at the surface were measured by surface profilometer, then the specimens were embedded in clear resin and sectioned. Impressions were obtained and used to get epoxy resin replicas. The epoxy replicas were gold-coated and observed under SEM. Average Maximum Gap(AMG), Gap Proportion(GP), Average Marginal Index(AMI) were used to compare the shrinkage gap of each group. The results were statistically analyzed using the Kruskal-Wallis One Way ANOVA, Student-Newman-Keuls method. The results of this study were as follows. 1. Average Maximum Gap. Gap Proportion, Average Marginal Index and depression at the surface of Z-100 hybride composite resin were smailer than those of AEliteflo flowable composite resin(P(0.05) 2. When the bonding between composite resin and tooth structure was strong, the shrinkage gap was small, and depression at the surface was deep(P<0.05). 3. In the well-bonded group. light-curing composite resin shrank toward bonded cavity wall. not toward light source. The result suggested that the direction of polumerization shrinkage was affected by the quality of bonding in the dentin-resin interface. The strong was the bonding between composite resin and tooth structure, the smaller was the gap and the deeper was the depression at the surface. Then the flow to compensate the polymerization shrinkage proceeded from surface to bonded cavity wall.

Flowable Composite Resin의 미세변연누출 및 전단결합강도

박성준,오명환,김오영,이광원,엄정문,권혁춘,손호현 대한치과보존학회 2001 Restorative Dentistry & Endodontics Vol.26 No.4

정신질환자 수용시설환자의 정신과적 입원치료 경험 유무에 따른 비교연구

박민철,오상우,권혁일,박남진,김종주 圓光大學校 醫科學硏究所 1986 圓光醫科學 Vol.2 No.2

We have visited the asylums in Chollapukdo for two months since March of 1985. We conducted a comparative study between the patients who has been previously hospitalized and who has not been hospitalized for psychiatric problems. We individually interviewed 489 patients using the interview schedule. The results are shown as follows: 1. The group who were young, single and highly educated have been more hospitalized than the groups who were old, married and little educated. However, no significant difference was made by sex and districts. 2. The group who lived alone or were deserted from the family has been rarely hospitalized. 3. The group, who has been entered the asylum by the family or who explained the reason as treatment, has been more hospitalized previously than the group entered by the others or who said that they came due to alcohol. 4. While the group who has been hospitalized showed tendency to accept having their psychiatric disorders, but the group who has not been hospitalized showed tendency to deny having their disorders. 5. The group who named their disorders psychoses or schizophrenia has been more hospitalized than the group who named them alcoholics. 6. The group hospitalized previously has been also treated in other ways besides psychiatric treatment, and chronic patients with the duration of more than three years has been relatively hospitalized previously. 7. While the group who has been previously hospitalized was relatively indicated for hospitalization, but the other group was not relatively indicated.

초음파 어레이를 이용한 이동 로봇의 장애물 회피에 관한 연구

김병남,권오상,김기호,이응혁 建陽大學校 1999 建陽論叢 Vol.- No.7

For mobile robot, the navigation effectiveness can be improved by providing autonomy, but this autonomy requires the mobile robot to detect unknown obstacles and avoid collisions while moving it toward the target. This paper presents an effective method for autonomous navigation of the mobile robot in structured environments. This method uses ultrasonic sensor array to detect obstacles and utilizes force relationship between the obstacles and target for avoiding collisions. Accuracy of sensory data produced by ultrasonic sensors is improved by employing error eliminating rapid ultrasonic firing (EERUF) technique. Navigation algorithm controlling both the velocity and steering simultaneously is developed, implemented to the mobile robot and tested on the floor filled with the cluttered obstacles. It is verified that from the results of the field tests the mobile robot can move at a maximum speed of 0.66 m/sec without any collisions.

Flowable 및 microfill 복합레진으로 충전된 제 5급와동에서 load cycling 전,후의 미세변연누출 비교

강석호,김오영,오명환,조병훈,엄정문,권혁춘,손호현 大韓齒科保存學會 2002 Restorative Dentistry & Endodontics Vol.27 No.2

Low-viscosity composite resins may produce better sealed margins than stiffer compositions (KempScholte and Davidson, 1988; Crim, 1989). Flowable composites have been recommended for use in Class V cavities but it is also controversial because of its high rates of shrinkage. On the other hand, in the study comparing elastic moduli and leakage, the microfil had the least leakage (Rundle et al. 1997). Furthermore, in the 1996 survey of the Reality Editorial Team, microfills were the clear choice for abfraction lesions. The purpose of this study was to evaluate the microleakage of 6 composite resins (2 hybrids, 2 microfills, and 2 flowable composites) with and without load cycling. Notch-shaped Class V cavities were prepared on buccal surface of 180 extracted human upper premolars on cementum margin. The teeth were randomly divided into non-load cycling group (group 1) and load cycling group(group 2) of 90 teeth each. The experimental teeth of each group were randomly divided into 6 subgroups of 15 samples. All preparations were etched, and Single bond was applied. Preparations were restored with the following materials (n=15) : hybrid composite resin [Z250(3M Dental Products Inc. St.Paul, USA), Denfil(Vericom, Ahnyang, Korea)], microfil [Heliomolar RO(Vivadent, Schaan, Liechtenstein), Micronew(Bisco Inc. Schaumburg, IL, USA)], and flowable composite[AeliteFlo(Bisco Inc. Schaumburg, IL, USA), Revolution(Kerr Corp. Orange, CA, USA)]. Teeth of group 2 were subjected to occlusal load (100N for 50,000 cycles) using chewing simulator(MTS 858 Mini Bionix Ⅱ system, MTS Systems Corp., Minn, USA). All samples were coated with nail polish 1mm short of the restoration, placed in 2% methylene blue for 24 hours, and sectioned with a diamond wheel. Enamel and dentin/cementum margins were analyzed for microleakage on a sclale of 0 (no leakage) to 3 (3/3 of wall). Results were statistically analyzed by Kruskal-Wallis One way analysis, Mann-Whitney U-test, and Student-Newmann-Keuls method. (p=0.05) Results: 1. There was significantly less microleage in enamel margins than dentinal margins of all groups. (p<0.05) 2. There was no significant difference between six composite resin in enamel margin of group 1. 3. In dentin margin of group 1, flowable composite had more microleakage than others but not of significant differences. 4. There was no significant difference between six composite resin in enamel margin of group 2. 5. In dentin margin of group 2, the microleakage were R>A=H=M>D>Z. But there was no significant differences. 6. In enamel margins, load cycling did not affect the marginal microleakage in significant degree. 7. In dentin margins, load cycling did affect the marginal microleakage only in Revolution. (p<0.05)

比較憲法에 관한 硏究 : 民主主義國家의 憲法과 共産主義國家의 憲法을 中心으로

金水暎,黃革周,權光植,吳再煥,崔聖俊,金益鉉,金永休,王任東 朝鮮大學校 法政大學 1977 法政大論文集 Vol.4 No.-

This paper aims to make clear the fundamental differences between the constitutions of two political systems, constitutional democracy and communism. (1) Fundamental Human Rights The recognition and the protection of fundamental liberties are the essences of the political system of constitutional democacy. The reality of individual liberties is the only reliable criterion that differentiates the two political systems, since the institutional apparatus of both government, assemblies, elections, parties, bureaucracies have become stereotyped to the point of identity. Recognition or nonrecognition of fundemental guaranties are closely related to the ideological telos of either system. In the constitutional democracy they crystallize the supreme values of human self-realization and dignity. In the communist states they are denied legitimacy not only because they may function as foci of opposition against monolithic power but also because they could obstruct the ideology of economic planning under collectivism. The idelolgical foundation and functional purpose of classical fundamentalism underwent a fa -reaching transformation in the Marxian society. The Russian Revolution preaches and practices the primacy of the collectivity over the individual. Instesd of being "inalienable" interpreted as obligations of the state toward the laboring masses. The attitude of Marxism in the U.S.S.R. and the so-called "People's Democracies" toward fundamental liberties is altogether different. All constitutions in the Soviet orbit contain elaborate statements on fundamental rights of the citizens, characteristically coupled with provisions concerning their duties toword the state and the community. Civil liberties in the classical sense, which the constitution of communist states merely summarizes, are overshadowed by the new social and economic rights. The guaranty of the civil rights proper is hedged in by the rubber clause that they are guaranteed " in conformity with the interests of the working class" and "in order to strenghthen the socialist system". Especially political rights of the suffrage are converted into compulsory mass participation in the political process directed by the party hierarchy. And its single party (communist party)was the straight negation of all political liberty. (2) Patterns of Governament In the modern democratic-constitutional state the essence of the power process consists in the attempt to establish an equilibrium between the various competitive plural forces within in state society, with due regard to the free unfolding of the human personality. In communist state, social control and political power are monopolized by a single power holder, subordinating the individual to the ideological requirements of the group domination the state. The basic difference between the two political systema conists in whether, in the various stages of the governmental process, political power, is distributed among and shared by several independent power holders or whether political power is concentrated in and monoploized by a single power holder, be it an individual person, and assembly, or a party. Assembly government system revived in the Stalin constitution of 1936 in the U.S.S.R. from where it spread, after the Second World War, to all satellite states, as well as East Germany, Red China, North Korea. No communist state fails to conform to this standard pattern. Assembly government, by its own biological laws. easily transforms itself into a regime in which a single power holder exercises the monopoly of political power. This may well be the intrinsic reason for the communist preference. By necessity the communist state is a plice state. Another indispensable instrument of social control is the single party. The governmental techniques of a communist regime are necessarily authoritarian. But the regime does much more than exclude the power addressees from their legitimate share in the formation of the will of the state. It attempts to mold the private life, the soul, the spirit and the mores of the citizens to a dominant ideology that the various instrumentalities of the power process force on the non-conformists.

원광의대 부속 제 2병원 신경정신과 환자에 대한 통계적 고찰

박민철,김종주,박남진,오상우,권혁일,권영숙,박종호 圓光大學校 醫科學硏究所 1986 圓光醫科學 Vol.2 No.2

We examined 1,856 patients who visited Won Kwang Neuropsychiatric hospital since July 11 of 1984(since the hospital opened) until June 11 of 1986. We researched diagnostic and other distributions of inpatients and outpatients. The study revealed as follows : 1. Of total patients males visited this hospital more than females as 52.7%. Most of them(67.1 %) resided in Iri, Iksan and Kimje. In the point of insurance, insured patients and uninsured patients except medicaids were 73 %. Males(60%) were more insured medically than females (55.4%). While insured patients relatively resided in urban area, but uninsured patients except medicaids did in rural area. 2. Of outpatients neurotic disorder was the most as 35.1%, secondly schizophrenic disorder and thirdly affective disorder, but of inpatients schizophrenic disorder was the most as 41.4%, secondly neurotic disorder thirdly affective disorder. 3. Alcohol abuse (98.2 %), paranoid disorder, convulsive disorder and child mental disorder were mostly found in males, but neurotic disorder (59 .6 %), affective disorder and other psychotic disorder were mostly found in females. 4. In unmarried ones schizophrenic disorder ( 43 .6 %), neurotic disorder, other psychotic disorder were common, but in married ones neurotic disorder (55.1 %), schizophrenic disorder, affective disorder were common. 5. On the distribution of age schizophrenic disorder was found the most in the twenties (28.4 %), next in the thirties and in the forties, but neurotic disorder was found the most in the thirties, next in the twenties and in the forties. 6. On the distribution of age at onset schizophrenic disorder develops mostly during the twenties (45.5 %), secondly during the teens and thirdly during the thirties, but neurotic disorder develops mostly during the thirties and the twenties (53.1 %). 7. On the duration of hospitalization 34.4% of the patients was hospitalized during less than 15 days, 22.0% during 60-90 days and 80.4% during less than 3 months. 8. In the result of treatment 41.2% of the patients was improved and 31.7% a little improved. In total 72.9% of the patients got helped therapeutically.

Clinicopathological significance of p53, hypoxia-inducible factor 1alpha, and vascular endothelial growth factor expression in colorectal cancer.

Kwon, Hyuk-Chan,Kim, Sung Hyun,Oh, Sung Yong,Lee, Suee,Kwon, Kyung A,Choi, Hong-Jo,Park, Ki-Jae,Kim, Hyo-Jin,Roh, Mee Sook Potamitis Press 2010 Anticancer research Vol.30 No.10

<P>BACKGROUND: The principal objective of this study was to evaluate the prognostic significances of p53, hypoxia inducible factor-1 alpha (HIF-1관), and vascular endothelial growth factor (VEGF) expression in colorectal cancer. MATERIALS AND METHODS: The tumor tissues of 311 patients with colorectal carcinoma that had undergone potentially curative resections were immunohistochemically assessed using monoclonal antibodies against p53, HIF-1관, and VEGF. RESULTS: Positivity rates of p53, HIF-1관, and VEGF were 42.4%, 63.0%, and 56.6%, respectively. HIF-1관 expression in tumor tissues was determined to be correlated significantly with the expression of VEGF (p=0.040), and depth of invasion (p=0.019). Multivariate analysis demonstrated that HIF-1관 was independently associated with poor overall survival (p=0.002). CONCLUSION: HIF-1관 expression is associated with VEGF expression and angiogenesis in colorectal carcinoma. Additionally, the expression of HIF-1관 in tumor tissue is associated with angiogenesis and poor overall survival in patients with colorectal cancer.</P>