附屬樹木園의 設立目的 改正 및 戰略計劃 竪立에 관한 考察 : 우리는 무엇을 해야하는가?

全正壹,金輝,玄正悟,張珍成 서울대학교 수목원 2000 서울大學校 樹木園 硏究報告 Vol.- No.20

서울대학교 농업생명과학대학 부속수목원은 1967년 10월 21일 설치된 후 여러 차례 그 위상이 변화되어 오늘에 이르고 있으며 그 설립 목적 또한 수목원 규정에 명시되어 수 차례 개정되었으나 내용면에서 큰 변화 없이 현재까지 유지되어 왔다. 기존의 설립 목적은 수목에 관한 연구, 교육, 증식, 보전이라고 요약할 수 있다. 그러나, 수목원이 설립된 지 30년을 넘는 동안 주변 여건과 시대 상황의 많은 변화가 있었으며 이에 따라 당초 수목원이 설립되던 시점에서 제정된 설립 목적을 시대 상황과 부속수목원이 처한 환경에 맞고 21세기를 지향하는 새로운 교육 여건에 맞춰 개정하고 이 설립목적을 효과적으로 수행하기 위한 전략계획을 새로이 수립하였다. 본 수목원의 개정된 설립목적은 '우리 나라 자생 식물 및 북반구 식물에 관련된 지식과 정보를 축적, 연구하고 학생 및 일반인들을 교육함과 동시에 이들 식물을 수집, 증식, 보전, 전시하고 국내외 관련 기관과의 교류, 협력을 추구한다.'로 확정하였으며 이를 달성하기 위한 전략계회긍ㄹ 수립하였다. Although we have had clear our purposes of The Arboretum since 1967, there have been shortfalls between our long term plans and our current aims. It is about the time that we need to prepare and agree a statement of the central purpose and mission of the garden more clearly. Our objectives of a garden were needed to cover all aspects of the scientific, conservation and education value of the living plant collections worldwide. Our mission and strategy plans were then reviewed extensively and therefore we make sure that it will be useful and relevant to our current work and reflect good practice in our gardens. After a great deal of thought and discussion among our staffs, we identified with and own the mission statement as follows. The Arboretum of Seoul National University mission is to acquire, grow, display, conserve and study documented collections of native plants and other botanic specimens from the temperate Northern hemisphere and to engage in collections of botanical information and knowledge and in education that will enable other international and national institutes as our networks to make use of the knowledge acquired.

청소년의 컴퓨터게임 이용실태, 부모양육방식, 개인의 정신병리

전성일,류정환,김영미,정홍경,조아라,이정호,최영민,이기철 대한소아청소년정신의학회 2000 소아청소년정신의학 Vol.11 No.1

연구목적 : 오늘날 컴퓨터게임은 청소년기의 보편적 놀이도구가 된 상황임에도 불구하고 이들이 게임에 몰두하는 이유와 개인특성에 관한 정신과적 연구는 드문 실정이다. 이러한 필요성에서 본 연구는 중학교 2년 생을 대상으로 청소년의 컴퓨터게임 사용실태를 파악하고, 연관된 개인정신병리와 부모의 양육방식과의 관계를 밝히고자 하였다. 방법 : 이 연구는 서울시 노원구에 위치한 중학 2년생 124명을 대상으로 하였다. 정신병리의 측정을 위하여 한국판 간이정신진단검사(SCL-90-R)을 사용하였고, 부모자녀 결합형태 조사(PBI)를 통하여 부모양육태도를 알아보았다. 결과 : 1) 비록 과도한 시간을 들여 컴퓨터게임을 하더라도, 컴퓨터게임과 연관된 특정 정신병리는 발견할 수 없었으며 따라서 콤퓨터게임은 청소년기에 있을 수 있는 일상적인 놀이문화이다. 또 한대 부분의 청소년은 컴퓨터게임이 문제가 되지 않는다고 인신하고 있었다. 2) 남학생은 게임빈도, 게임시간, 게임방에서 보내는 시간, 게임을 한 번 할 때 지속하는 시간 등에서 여학생에 비해 통계적으로 의미 있게 높은 수치를 보였다. 3) 청소년의 신체증상호소, 타인간의 관계에서 나타나는 불편감, 우울증, 불안증의 정신병리는 컴퓨터 오락으로 인한 부작용과 의미 있는 관계를 보였다. 4) 게임빈도와 FBI상의 어머니 과보호척도는 정적인 상관관계를 보였다. 5) 게임을 하는 이유로는 공부, 학교 생활 등의 복잡한 것을 잊고 몰두하기 위해가 가장 많았고, 가장 심리적으로 부담이 되어 피하고 싶은 것으로는 학업문제였다. 6) 청소년은 게임방을 주로 친구들과 어울리는 공간으로 사용하고 있었지만 그 기능을 다하기에는 아직 보완해야 할 점이 많다. 결론 : 게임으로 인한 부모, 교사와의 다툼, 잦은 지각/결석, 친구들과 어울리지 못하는 등의 문제가 많은 경우에는 청소년 자체의 정신별리를 의심해 보아야 하며, 게임의 빈도가 의미 있게 높은 청소년의 경우에는 둥반되는 정서상의 문제와 함께 부모양육태도도 함께 세심하게 살피는 것이 필요하다. Objects : This study was designed or studying of current Korean adolescents computer game playing habits and exploring associations with parental rearing patterns and individual psychopathology. Methods : One hundred twenty our adolescents(age 13-15) who reside in urban area completed self-report questionnaires containing Questionnaires designed by authors, Symptom Checklist-90-Revision of Korean Version(SCL-90-R) and Parental Bonding Instrument(PBI). Results : 1)Computer game playing appears to be one of the social and leisure phenomena in these days. Although Adolescents spend a lot of times on computer game, Many of them perceive not problematic. 2)Compared with females, Male play computer games more regularly, more longer, spent more times in gamebang. 3)There was positive relationship between anxiety subscale in SCL-90-R and detrimental effects of computer game. 4)There was positive relationship between game frequency and maternal overprotection. 5)The main reasons for playing are "for an avoidance of stressful life events" , academic burden was the most troublesome issues in korean adolescents. 6)Many adolescents use gamebang as a social place, but they thought that gamebang is not good places to have a good time. Conclusion : This papers shows that computer game playing is a popular social leisure activity in Korean adolescents. And, Most of korean adolescents reported that they are suffered from pressure of academic achievements. They use computer game mainly by means of relieving academic pressures. In a heavy game users who have many conflicts with parents, teacher and who has frequent truancy and social withdrawal show significant anxiety. Maternal overprotection was observed in heavy game users. Authors recommended that clinicians should be careful in examining heavy computer game behaviors. Both underlying affective states and environmental influences, including family situations should be vicariously examined. KEY WORDS : Computer game · Gamebang · Game habits · Psychopathology · Parental rearing pattern.

大岩山의 植物相

閔雄基,張珍成,全正壹,金輝,崔道烈,鄭承洙 서울대학교 수목원 2000 서울大學校 樹木園 硏究報告 Vol.- No.20

This study was carried out to investigate the flora of Mts. Dae-am, Dae-woo, Baek-suk, and Sa-myung located on the east side of DMZ in province Yang-gu-gun, from July 1999 to August 2000. Although two hundred and fifty eight vascular plant taxa (70 families 167 genera) were recorded, this was only a part of representatives in this community because of the restrictin of collections within the military zone. The overall forest stand age of this area was 40 to 50 years, but occasionally ca 70 years old trees were found. We reported 11 taxa of the rare and endangered species proposed by the Ministry of Environment in this area. The Yong-neup, the only high altitude (alt. 1,200m) moore in south Korea, are located in the peak of Mt. Dae-am-san. Some species of this moore (Carex chordorrhiza Ehrh., Carex limosa L., and Gentiana jamesii Hemsl.) - were only found in south Korea. This moor would suffer vegetation change by natural moorland succession and human disturbances. The long-term monitoring of variation of annual vegetation, species distribution, numbers and distribution pattern of individuals of rare species are recommended for the wetland conservation.

雲達山의 植物相

閔雄基,張珍成,全正壹,金輝,崔道烈,金承昆 서울대학교 수목원 2001 서울大學校 樹木園 硏究報告 Vol.- No.21

This study was carried out to investigate the flora of Mt. Undal (alt. 1,097.2m) located on the northwestern side of province Gyeongsangbuk-do, near Myngyeong-si city, from April 2000 to Sept. 2000. Total number of vascular plants discovered in Mt. Undal were 70 families, 154 genera, and 243 taxa(including species, subspecies, varieties and forma). Major vegetation was Acer pictum var. mono - Quercus mongolica - Carpinus laxiflora community. The overall forest stand age of this area was 40 to 50 years, and occasionally ca 70 years old Abies holophylla trees were found. Although, there were no rare and endangered speices, we found two species of level IV by the Ministry of Environment - Anemone koraiensis Nakai, Anemone reflexa. Steph. et Willd.

中國 華北地區 南部(陝西省) · 華中地區 西部(四川省)의 植物調査

張珍成,崔虎,全正壹,李興洙,金輝,張桂羨 서울대학교 수목원 2005 서울大學校 樹木園 硏究報告 Vol.- No.25

본 연구팀은 중국 화북지구 남부(陜西) 및 화중지역 서부(四川)에 해당하는 지역의 온대 및 한대식물 자원 확보를 목표로 섬서성 남부 지역의Mt. Taibai(太白山)과 Mt. Qinling(秦嶺) 등지 및 四川 중서부지역의 XiaoJin-xian, Li-xian, Maerkang, Dujiangyan 등지의 자연식생 보존 상태가 우수한 산림 및 자연식생 보전 지역에서 7월에 1차 11일간 (陜西), 9월에 2차 9일간(四川) 조사를 실시하였다. 1차 조사에는 중국 측 4명, 한국 측 5명 등 총 9명이 현지 조사에 참여하였으며, 2차 조사에는 중국 측 2명, 한국 측 5명 등 총 7명이 참여하였다. 조사를 위해 이동한 총 거리는 1차 조사 약 600km, 2차 조사 약 1,200km였다. 조사 지역의 해발은 섬서성 1,500-2,500m, 사천성 1,800m-4,500m 지역으로써 온난대 혼효림, 온대 낙엽활엽수림, 침엽혼효림 및 아고산대 초원까지 다양한 식생 분포를 나타내었다. 1차 조사에서는 예비 조사의 성격을 포함하였으므로 이들 지역 모두를 조사하였고 2차 조사에서는 해발 3,000m 전후 지역의 온대 낙엽활엽수림 지역에서 집중적으로 자원 확보에 주력하였다. 본 조사 결과 陜西에서 51과 112속 179분류군에 대한 46점의 생체 및 종자를 확보하였으며, 四川에서 27과 41속 65분류군에 대한 63점의 생체 및 종자를 확보하여, 총 52과 114속 232분류군의 식물에 대한 표본 및 종자·생체를 확보하였다. 陜西 지역에서 확보한 주요 식물 자원은 Angelica 및 Populus속의 다수 종과 Triosteum pinnatifidum, Maddenia hypoleuca, Eleutherococcus giraldii, Angelica polymorpha 등 이었으며, 四川 지역에서 확보한 주요 식물 자원은 Acer, Berberis, Cotoneaster, Syringa, Sorbus 등이었다. 본 조사 결과 중국 화북지구 및 화중지역 전체와 비교할 때 상대적으로 좁은 지역만을 조사하였지만 큰 성과를 얻을 수 있었던 것은 陜西 및 四川 지역의 식물상이 매우 풍부하였던 것뿐만 아니라 다음과 같은 요소들이 복합적으로 작용한 것으로 판단된다. 첫째, 사업 목표의 구체화를 통한 조사원들의 협력 및 효율적 조사 수행을 유도하였다. 둘째, 현지 파트너의 우수한 역량을 바탕으로 조사 대상지의 선정 및 조사 수행이 원활하였다. 셋째, 충분한 사전 조사를 통해 상대적으로 좁은 지역에서 짧은 시간을 들여 효율적으로 자원을 확보할 수 있었다. 이들 내용은 향후 본 사업과 관련된 계속 사업에 적용할 수 있을 것으로 생각된다. This study was carried to investigate the flora of Shaanxi in southern China (Mt. Taibai, and Mt. Qinling) and Sichuan in western China (Xiaojin-xian, Li-xian, Maerkang, and Dujiangyan). The main purposes of this study were to obtain specimens, seeds and living collections with passport data for the potential use. This exploration was the forth of our whole research regarding the investigation of the flora of eastern Asia. The expedition was carried out by a team of scientists from T. B, Lee Herbarium, Seoul National University (SNUA), and Institute of Botany in Beijing (PE). This cooperation insured involvement by both Chinese and Korean experts in all targeted taxonomic groups, and was essential to successful execution of field studies in China. Field survey was carried out two times in July and September, 2005. We were primarily interested in areas between 1,500m and 2,500m altitude of Shaanxi and around 3,000m of Sichuan in order to collect cool and cold temperate woody taxa. The results obtained from this study were as followed: 1) vascular plants specimens were about 1,000 collections. 51 families, 112 genera and 179 taxa in Shaanxi area and about 200 collections, 27 families, 41 genera and 65 taxa in Sichuan area, 2) living collections were 46 taxa in Shaanxi area and 63 taxa in Sichuan area. Major seed and herbarium collections included genera Angelica, and Populus and Triosteum pinnatifidum, Maddenia hypoleuca, Eleutherococcus giraldii, Angelica polymorpha, and etc. in Shaanxi area and genera Acer, Berberis, Cotoneaster, Syringa, Sorbus, Spiraea, Rhododendron, Cotoneaster, Prunus, Zanthoxylum, Lonicera, Rosa, and Euonymus in Sichuan area.

Risperidone이 백서의 억제된 자발적 교대행동에 미치는 영향

이기철,이정호,김진규,정홍경,천강훈,류정환,최영민,전성일 대한생물치료정신의학회 1998 생물치료정신의학 Vol.4 No.2

Objectives : Recently, some case reports have shown that risperidone is effective to refractory obsessive-compulsive disorder. Possible explanations for efficacy of risperidone in refractory obsessive-compulsive disorder maybe due to that it is both serolonin and dopamine receptor antagonist. On the basis of serotonin-dopamine interaction hypothesis, a biological etiology of obsessive-compulsive disorder, the effect of risperidone was evaluated to the suppressed spontaneous alternation behaviour of animal model of obsessive-compulsive disorder in rats. Methods : The apparatus for spontaneous alternation behaviour was a black plexiglas T-maze with distinctive black and white goal boxes. Black gullotine doors separated the start box and the goal boxes from the main body of the T-maze Small cups were placed in the corners of both goal boxes(all arms measured 50×10cm) 24 hours prior to experiment, rats(Spraque-Dawley) were food-deprived. The food-deprived rats were put into T-maze, in which both goal boxes were baited with small amounts of chocolate milk. Each rat was given 2 set of 7 trials during which it was placed in the start box and allowed to choose the one of the goal boxes for checked. After baseline of the number of choices of spontaneous alternation behaviour was stabilized, the pontaneous alternation disrupted by nonselective 5-HT agonist, 5-MeODMT (1.25mg/kg/IP). The experimental animals were stratified into 5 groups, fluoxetine(10mg/kg/IP), risperidone(0.1mg/Kg/IP), haloperidol(0.1㎎/Kg/IP), fluoxetine(10mg/Kg) with haloperidol(0.1 mg/Kg), and saline(0.5cc/IP) control group. Each drugs were injected for 21 days as a chronic treatment. The protective effects were evaluated on the nest day of discontinuation of the each drugs among 5 groups. Results : 1) After 21 days of the drug treatment, the risperidone group and the fluoxetine group showed significant difference from the haloperidol group and the saline control group on the protection of the 5-MeODMT induced suppression of spontaneous alternation behaviour. 2) The fluoxetine group and fluoxetine with haloperidol group showed significant difference between before and after treatment in the protection of 5-MeODMT induced suppression of spontaneous alternation behaviour. The risperidone group also showed significant difference between before and after treatment in the protection of 5-MeODMT induced suppression of spontaneous alternation behaviour, but the protective effect of risperidone was superior to fluoxetine. Conclusion : These findings suggest that both risperidone and fluoxetine have a favorable effect in the protection of 5-MeODMT induced suppression of spontaneous alternation behaviour. We think that risperidone can be possible alternatives to SSRIs in the treatment of refractory obsessive-compulsive disorder in clinical situation.

京畿道의 植物相 : 태화산, 화야산, 대부도, 칠현산, 철마산, 검단산

崔道烈,張珍成,金正猷,全正壹,金輝,閔雄基,姜佑昌 서울대학교 수목원 2001 서울大學校 樹木園 硏究報告 Vol.- No.21

This study was conducted in order to explore general flora of the Gyounggi-do Province and to clarify the distribution of some specificated taxa of the Korea. Daebu-do Island, Mt. Taewha, Mt. Hwaya, Mt. Gumdan, Mt. Chilhyun and Mt. Chulma among eighth grade-area of the Degree of Green Naturality (DGN) within the boundary of the Gyounggi-do Province were visited to investigate local flora. The number of identified vascular plant species were as follow; Mt. Hwaya: 120 species (99 genera of 67 families), Mt. Teawha: 132 species (103 genera of 56 families), Daebu-do Island: 124 species (103 genera of 50 families), Mt. Chulma: 129 species (99 genera of 67 families), Mt. Gumdan: 121 species (96 genera of 52 families), Mt. Chilyun: 90 species (74 genera of 42 families). The endemic Clematis brachyura Maxim. was found to distribute Daeby-do. It seemed that plantation was occupying large area in forest of the Gyounggi-do Province. Forty two specificated taxa were identified and 3 taxa, 10 taxa, 5 taxa, and 24 taxa were sorted into forth grade, third grade, second grade, and first grade respectively. Mt. Taewha showed the highest record (16 taxa) in the number of specificated taxa, Mt. Hwaya was the next with 13 taxa. Mt, Chulma (12 taxa), Mt. Gumdan (11 taxa), Daebu-do Island (7 taxi), and Mt, Chylma (4 taxi) followed. Mt. Taewa and Mt. Whaya were found to be relatively higher in the score calculated front the specificated taxa distribution, while Daebu-do Island and Mt. Chilyun were lower, that difference was probably due in part to consequences of severe disturbance of human activities. With respect to the consequences of severe disturbance of human activities. With respect to the geographical proximity to the Gangwon Province, Mt. Hwaya showed higher similarity of the species composition to that of the Mt. Jumbong.

Clozapine이 백서의 억제된 자발적 교대 행동에 미치는 영향

천강훈,이기철,이정호,최영민,전성일,정홍경,류정환,최미 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.5

연구목적 : 강박장애의 생물학적 원인론중 세로토닌-도파민 상호작용 가설에 적합한 5-HT₂ 수용체와 도파민 D₂수용체를 동시에 차단하는 약물의 일종인 cloazpine과 세라토닌 재흡수 차단약물인 clomipramine, 그리고 도파민 D₂수용체 차단 약물인 haloperidol을 실험백서의 강박장애 동물모형에 투여하여 자발적 교대 행동에 미치는 영향을 비교, 측정하였다. 그 결과로서 1) 세라토닌 수용체와 도파민 수용체를 동시에 차단하는 약물의 효과를 확인하고, 2) 세라토닌과 도파민 수용체 동시차단 약물의 효과가 확인되면 임상적으로 기존의 세라토닌 재흡수 차단약물에 반응을 보이지 않는 강박장애 환자 치료에 세라토닌 수용체와 도파민 수용체를 동시에 차단하는 비전형적인 항정신병 약물들이 강박장애의 치료에 유용하게 사용될 수 있는 가능성을 제시하고자 하였다. 실험재료 및 연구방법 : 실험동물은 동일한 배에서 출생한 수컷 Spraque-Dawley 백서를 사용하였다. 자발적 교대 행동(spontaneous alternation behaviour : 이하 SAB)을 시험하기 위해 SAB의 기준치를 구하고 난 후, SAB을 차단하기 위한 방법으로 비선택적 세라토닌 순응제인 5-MeODMT(5-methoxy-N, N-dimethyltrytamine)를 투여하였다. 실험백서들을 clomipramine(5㎎/㎏), clozapine(10㎎/㎏), clozapine(20㎎/㎏), haloperidol(0.1㎎/㎏), 그리고 saline(0.2cc) 투여군으로 나누고 21일에 걸쳐서 복강내 주사하였다. 실험약물 투여가 끝난 다음날인 22일째에 5-MeODMT(5-methoxy-N, N-dimethyltryptamine : 1.25㎎/㎏/IP)를 각각의 실험동물군에게 투여하고 실험약물의 만성투여가 5-MeODMT 투여로 억제되는 SAB을 얼마나 호전시키는 지를 측정하였다. 모든 자료는 SPSS for window 7.5으로 통계처리 하였다. SAB의 기준치 5-MeODMT 투여로 억제되는 SAB의 효과, 실험약물의 만성투여에 따른 SAB의 변화는 일원분산분석을 사용하였으며, 사후검증은 Scheffe 검증을 적용하였다. 각 군내에서 기준치와 5-MeODMT 투여로 억제되는 SAB의 변화, 그리고 실험약물의 만성투여에 따른 SAB의 변화는 다중변량분석을 시행하였다. 결과 및 결론 : 역구결과 실험동물은 T-형 미로의 SAB에서 평균 1.33±0.36회의 훈련 기준치를 보였다. 5-MeODMT 주사후 , 실험동물의 SAB치는 3.12±0.63회를 보여 강박행동이 유발하였다. 21일간의 실험약물 투여후, 22일째에 5-MeODMT 주사에 대한 SAB의 반응은 clozapine 투여군과 clomipramine 투여군이 halo-peridol 투여군과 saline 투여군에 비하여 유의하게 낮은 수치를 보여 5-MeODMT투여로 억제된 SAB을 호전시키는 소견을 나타냈다. 각 실험동물군 내에서 각각의 SAB 훈련 기준치와 실험약물 투여 전후에 5-MeODMT 투여로 인한 SAB을 비교한 바, clomipramine 투여군은 약물투여 전에 5-MeODMT로 억제된 SAB이 약물투여후 의미있게 호전되었다. 한편, clozapine 투여군도 약물 투여전에 5-MeODMT로 억제된 SAB가 약물투여후 의미있게 호전되었으며, 이런 SAB의 호전은 clomipramine 투여군보다 우수하였다. 이상의 연구결과로 보아, 강박장애의 생물학적 병리론을 이해하는데 있어 세라토닌-도파민 상호작용 가설이 의미가 있음을 추정할 수 있었다. 향후, 강박장애의 임상치료에서 전형적인 SSRIs 치료에 반응치 않는 환자들에게 세라토닌-도파민 동시차단제인 비전형적인 약물의 단독투여를 시행하는 후속연구를 기대해 본다. Objectives : This study was designed to evaluate the role of the 5-HT₂and dopamine D₂antagonist on spontaneous alteration behaviour which is an animal modal of obsessive-compulsive disorder in rat. On the basis of serotonin-dopamine interaction hypothesis, the effect of clozapine was evaluated by applying the suppressed spontaneous alternation behaviour model. Methods : The apparatus for spontaneous alternation behaviour was a black plexiglas T-maze with distinctive black and white goal boxes. Black guillotine doors separated the start box and the goal boxes from the main body of the T-maze. Small cups of chocolate milk were placed in the corners of both goal boxes. At 24 hours prior to experiment, rats(Spraque-Dawley) food-deprived. The food-deprived rats were put into T-maze, in which both goal boxes were baited with small amounts of chocolate milk. Each rat was given 2 set of 7 trials during which it was placed in the start box and allowed to choose one of the goal boxes for each time. The mean number of choices until the occurrence of spontaneous alternation behaviour were checked. After baseline of the number of choices of spontaneous alternation behaviour was stabilized, the spontaneous alternation was disrupted by nonselective 5-HT agonist, 5-MeODMT(1.25mg/Kg/IP), The experimental animals were stratified into 5 groups :clomipramine(5mg/Kg/IP), clozapine(10mg/Kg/IP), clozapine(20mg/Kg/IP), haloperidol(0.1mg/Kg /IP), and saline(0.2cc/IP) control groups. They all went through 21 days fo treatment(intraperitoneal). The protective effects against the 5-MeODMT-induced disruption of spontaneous alternation behaviour were evaluated on the next day of drug treatment in each group. Results : 1) SAB was suppressed by 5-MeODMT injection. 2) After 21 days of the drug treatment, the clozapine and the clomipramine groups showed significant difference from the haloperidol and the saline control groups in the reversal of 5-MeODMT-induced suppression of spontaneous alternation behaviour. 3) The clozapine (20mg/kg/IP) group was superior to the clomipramine group in the protective effect of 5-MeODMT-induced suppression of spontaneous alternation behaviour. Conclusion : In clinical situation, the we think that atypical antipsychotic drugs those acting as serotonin and dopamine receptor antagonist with no extrapyramidal side effect can be beneficial to improve the symptoms of obsessive-compulsive disorder.

STRAIN RATE CHANGE FROM 0.04 TO 0.004%/S IN ANENVIRONMENTAL FATIGUE TEST OF CF8M CASTSTAINLESS STEEL

ILL-SEOK JEONG,WANJAE KIM,김태룡,HYUN-IK JEON 한국원자력학회 2011 Nuclear Engineering and Technology Vol.43 No.1

To define the effect of strain rate variation from 0.04% to 0.004%/s on environmental fatigue of CF8M cast stainlesssteel, which is used as a primary piping material in nuclear power plants, low-cycle fatigue tests were conducted at operatingpressure and temperature condition of a pressurized water reactor, 15 MPa and 315ºC, respectively. A high-pressure andhigh-temperature autoclave and cylindrical solid fatigue specimens were used for the strain-controlled low-cycle environmentalfatigue tests. It was observed that the fatigue life of CF8M stainless steel is shortened as the strain rate decreases. Due to theeffect of test temperature, the fatigue data of NUREG-6909 appears a slightly shorter than that obtained by KEPRI at thesame stress amplitude of 1x103MPa. The environmental fatigue correction factor Fen’s calculated with inputs of the test dataincreases with high strain amplitude, while the Fen’s of NUREG-6909 remain constant regardless of strain amplitude.

京畿道 加平郡 明智山의 植物相

全正壹,金善姬,金輝,金泰旭 서울大學校 農業生命科學大學 附屬樹木園 1995 서울大學校 樹木園 硏究報告 Vol.- No.15

This study was carried out to investigate the flora of Mt. Myongji in Kapyong-gun, Kyonggi-do. Field survey was carried six times from June 1994 to June 1995. The main results obtained from this study are summarized as follows: 1. Total number of vascular plants discovered in Mt. Myongji were 104 families, 326 genera and 795 taxa (including 668 species, 114 varieties, 12 forma and 1 subspecies) and 157 taxa (including 135 species, 19 varieties, 3 forma) were newly discovered through this study. 2. Rodgersia podophylla A. Gray, Hanabusaya asiatica Nakai and Lilium cernum Komarov are Specified Wild Plants by Ministry of Environment. 3. 30 species of Mt. Myongji were discovered as endemic species of Korea. 4. Because there are so many rare and endemic species in Mt. Myongji, it is necessary to specify Mt, Myongji as reservation area and to monitor this area in a long term.