Floristic characteristics of vascular plants and first distributional report of Pseudostellaria baekdusanensis M. Kim in Yongneup wetland protected area

Young-Chul Kim,Hyun-Hee Chae,Sang-Heock Oh,Seung-Ho Choi2,Moon-Pyo Hong3,Gi-Heum Nam,Jae-Yoon Choi,Hyun-Sook Choi,Kyu-Song Lee 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.2

Yongneup wetland protected area, the only high moor in Korea, is a core area to conserve biodiversity. Even though the Yongneup wetland protected area is relatively small, various plant species are distributed in the Yongneup wetland protected area because it includes various habitats showing different environmental gradients. Vascular plants distributed in the Yongneup wetland protected area were identified as a total of 376 taxa that is composed of 73 families, 217 genera, 322 species, 3 subspecies, 44 varieties and 7 forms. For endangered plants designated by the Ministry of Environment, 5 species including Trientalis europaea var. arctica, Lilium dauricum, Halenia corniculata, Lychnis wilfordii and Menyanthes trifoliata were found and 34 taxa were confirmed to be distributed only in the mountainous wetland habitats. Regarding naturalized plants, a total of 11 taxa were distributed, but most of them were distributed in the areas where artificial interference has occurred. And in areas inside the wetlands that are relatively well preserved, 2 species of Bidens frondosa and Erigeron annuus were observed. In this study, the occurrence and distribution of Pseudostellaria baekdusanensis M. Kim, which was recently found in Mt. Baekdu and reported as a new species, were identified in the Yongneup wetland protected area. A wetland is a very vulnerable area to drastic environmental changes and damages to its ecosystem could cause the extinction of rare plant species which are distributed only in the wetlands. Therefore, it is mandatory that current status of the Yongneup wetland protected area is evaluated and actions to prevent rapid environmental changes are taken. Fourteen separate investigations were conducted in 2013 and another four in 2014, to evaluate current status of the Yongneup wetland protected area. These investigations have provided us the basic information for future actions of conservation and restoration.

入口에 案內管이 있는 開放型 熱 사이폰에 關한 硏究

최인규,이진호,김철주 연세대학교 대학원 1976 延世論叢 Vol.13 No.2

The experimental study was carried out to investigate the characteristics of the flow fluctuation pheonomena, which occurred in the transition process from the impeded flow regime to the boundary layer flow regime in awl open thermosyphon by placing flow guides at the center of the orifice inlet where fluctuation occurred. The diameter and length of the guides were varied and their effects were investigated. With guides of long length, the fluctuation was not observed, and of medium length, the fluctuation was observed only in case of large diameter. However, when the length of the guides were short, the fluctuation took place just like in case of no guides. In this case, the existance of upward flow in the guide just before fluctuation occurred, resulted in reverse flow of the thermosyphon, however the Nusselt number showed same characteristics when the temperature of the orifice inlet was taken as the thermosyphon outlet temperature instead of as inlet temperature.

햄스터 구강암 발생 과정에서 Heat Shock Protein에 관한 면역조직화학적 연구

최규환,이동근,김은철,정창주 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2

A IMMUNOHISTOCHEMICAL STUDY ON HEAT SHOCK PROTEIN IN ORAL CARCINOGENESIS IN HAMSTER Heat shock protein (HSP) expression is unto·emulated in tumor cells and, HSP expression is likely marker of the malignant potential of oral epithelial lesion. Furthermore, the 70kDa HSP is implicated in the degree of tumor differentiation, the rate of tumor proliferation and the magnitude of the anti-tumor Immune response. Accordingly, the distribution and intensity of HSP70 and HSP47 expression was assessed in the DMBA induced oral carcinogenesis in hamster. Golden Syrian hamsters which were 3 months-age and 90∼120g were collected. 9,10-dimethyl -1,2-ben-zanthracene (DMBA) in a 0.5% solution in mineral oil was painted on the buccal pouch mucosa 3 times per week in the study group. In each control and experimental groups of 6, 8, 10, 12, 14, 16, 18, 20 weeks, specined for immunohistochemical study with anti-HSP47 and anti-HSP70 antibody. The following results were obtained. 1.HSP47 positive cells were race or negative of normal oral mucosa, increased mildly in basal and suprabasal basal layer, and spinous cell layer after experimental 6 weeks (dysplastic or CIS stage). In CIS stage, HSP47 expression is prominent in dysplastic free or normal adjacent epithelium. 2.HSP47 positive cells in connective tissue were mainly inflammatory cells, which is gradually increased from control to precancerous and cancer stage. But HSP47 positive cells after 14 weeks were decreased, especially normal and cancer adjacent epithelium. 3.The positive staining cells of HSP70 in control, dysplastic, and CIS stage were not seen. But they were mild findings in basal layer and moderate findings in spinous layer after experimental 14 weeks (cancer stage). 4.HSP70 positive cells were increased in precancerous and cancer stage than control group in connective tissue. After experimental 16 weeks, we could not find the HSP expression in cancer cells according to cancer differentiation or cancer stage. It is concluded that HSP70 or HSP47 expression is not a definitive marker of oral malignancy or malignant potential. However, with further development, HSP immunoreactivity may be valuable as an adjunct to conventional histology for assessing the malignant potential of oral mucosal lesions.

전상환자에서 구순 구각부 결손에 대한 재건의 치험 4례

최규환,강명수,민복기,정철우 大韓顎顔面成形再建外科學會 1993 Maxillofacial Plastic Reconstructive Surgery Vol.15 No.3

A technical refinement for oral commissure reconstruction is presented. The oral commissure has an important role in oral sphincteric function. Once lost, the oral commissure is very difficult to restore and therefore, reconstruction of the oral commissure requires prevention of this function as well as prevention of microstomia. Trauma and tumor excisions are the most frequent reasons that will necessitate reconstruction of the oral commissure. Direct approximation of the wound margins after resection of the corrner of the mouth could easily induce microstmia and difficulty in opening. Thus case presented here deals with distortion of noraml mouth angle and acquired microstomia due to burn and tissue deface following shotgun and explosive wounds. The a mucosal flap approach was used to rehabilitate a natural looking mouth angle showing satisfactory results function and esthetic wise.

'88서울올림픽 레슬링競技 運營實態에 關한 調査硏究

최규철 동국대학교 경주대학 1989 論文集 Vol.8 No.-

After analyzing the management of the wrestling tournament in the Seoul Olympic Games --- especially in four aspects such as its organization and team work, its progress, its implements and its equipments (a training p ; ace and stadium)--- I have come to the following conclusion. A. It seems to me that during the Games, by managing every event in its secial field and making the best use of their potentiality, they have got the 24th Olympics to be a great success. B. In the course of recruiting workers required, the Korean Olympic Committee picked out volunteers, but the workers came together around popular games so that it was to train them to serve at unpopular events instead of popular ones. It often happened that some volunteers to patronize their juniors of follows playing, so some of the events could not but be delayed. I, thus, come to fell that from now on, for the efficient management of the games, you have to ask each event leader to choose required workers, and that you should pick out those who have an interest in the event and a knowledge and mission about the game and who desire to work hard voluntality. C. Even though it has been an unpopular event in Korea for the past threedecades, the wrestling match has made korea known to the world in a lot of international meetings. And we have acknowledged that in the 24th Olympic Games, the match was a popular event because a large number of countries took part in it. D. According to the list of medal winners, the result was as follow : the first was the Soviet Russia, which obtained 8 gold, 4 silver and 3 bronze medals : and the country won an overwhelming victory over Catch-as-can and Gre-Co-Roman : the second was Korea, which secured 2 gold, 2 silver and 5 bronze medals : the forth was Japan, which got 1 gold, 4 silver and 3 bronze. It was also revealed that Communist were strong in Greco-Roman and that except for the Russia, both the free would and Communist counties appeared a similar level. E. Seeing the showing, I come to believe that as a personal match, the wrestling is so appropriate for every athlete's body condition that the government should have the event develop in order to enhance the national prestige in the whole world. F. It is, in my opinion, essential that the necessary facilities be taken over in time, for, during the Seoul Olympic, the authorities had a plan to use the Sang Moo gymnasium belonged to the Korean army was making use of the hall as a training place, and it took see long a time to get the permission to use the place that it made the event delayed. G. FILA says that the gymnasium is so small that is has only 5000 seats for the audience--- they say that it should have at least over 7000 ones. There were no seats for the reporters there, so they have to use the corridor for their seating that it would be inconvenient for players and umpires to get to the arena and it made the match delayed. So I believe that to mini-mize trial anderror and to make the event efficient, the builders, the head officers and the businessmen should have discussion about the matter and that we should try not to repeat the same error as we did in the Seoul Plympics.

慶州地域 成人 男 女의 Sports參與 實態 및 動機와 目的에 關한 硏究

崔圭喆,河星 동국대학교 경주대학 1994 東國論集 Vol.13 No.-

As mentioned above, this report were researched about the motive of participation and purpose of sports. The conclusions are as follow ; 1) mortive of participations General poinions are based on the 'healthy and the strength of one's body'(67.5%). And 'annulment of strees' and 34.0%, 'Hobby' are represented 23.0%. But in the above fifty years are showed 'prevent of aging', and higher attainments, they need the 'moral culture'. 2) actual conditions for sports. In Actual conditions for sports, 29.4% of a whole respondent are represent' jogging and walking', tennis and the others are 14.4%, badminton are 13.6%. And Women are preference more than man the 'health and aerbics' and 'swimming' In the frequency of sports, 26.7% are response 'twice and three times' in a month, 'twice and three times' in a week are 19.6%, 'every) are represent 19.6%. And time of exercise for and time, 30min∼a hour are represented 36.7%, a hour or above this are 29.2%, less than the 30min are represented 14.4%. In the time of exericse, 43.8% are showed 'morning'. In the partner for exercise, 61.4% are reponded 'alone' and in the effects for exercise, 59.5% are responded 'so-so. And in the bottle neck, 63.7% are responded the 'insufficiency of equipment and facilities'. 3) Equipment and facilities for exercise The conditions for equipment and facilities around the house, 53.2% are answered 'onthing'. And in the frequency of satisfaction for result of exercise, 45.1% are answered 'satisfaction' and 43.8% are responded 'so-so', 11.2% are 'dissatisfaction.' 4) Motive for exercise In the motive for exercise, 33.4 are answered 'from the colleague', 27.1 are 'from the mass media', 20.3% are 'from the club' or family and a acquaintance' and 4.0% are answered 'from guidance'. 5) information for exercise and the guidance In method of acquisition the exercise information, 68.3% of whole respondents are answered 'from mass-comunication', and in the 'need for guidance tecaher', 72.4% are answered 'from mass-comunication', and in the 'need for guidance thecaher', 72.4% are answered 'need'. And the reason for need of guidance, 44.4% ared responded 'consoltation', 42.4% are answered the 'guide for practice'. 6) method of activation for exercise In the method of cultivaion for exercise, 57.8 of whole respondent are answer the 'amplification of equipment and facilities' and 20.7% are responded 'exploitation of exercise program' and 20.7% are 'cultivation of guidance teacher. As we followed, this report are proposed as follow ; 1) Exercise events has to selected by conditions of resion and need the public relations and active of replenishment for exercise. 2) Method of exercise and exercise of family unit are needed form health. 3) For health, they need the program exploitation for exercise by hobby. 4) The equipment and facilities are supply to participator in order to use without the flinching.

非晶質 Silicon 薄膜의 製作 및 그 Doping 效果

최범식,김수길,고년규,황정남,정원모,이철주 연세대학교 자연과학연구소 1982 學術論文集 Vol.9 No.-

SiH_4 기체에 PH_3 및 B_2H_6 기체를 0.7% 체적비로 혼합하여 rf glow 방전법으로 n형 및 p형 a-Si:H 박막을 기판온도 120℃에서 제작하여, 광투과도 측정, 열처리에 따른 전기 전도도의 변화 등을 조사하여 이들의 doping 효과를 연구하였다. n형, p형 및 undoped a-Si:H 박막의 optical gap은 각각 1.73eV, 1.86eV 및 1.86eV로 doping이 많이 이루어질수록 줄어 들었다. 250℃에서 열처리한 시료들의 상온에서의 전도도는 각각 2×10^-2Ω^-1㎝^-1, 5×10^-8Ω^-1㎝^-1, 5×10^-7Ω^-1㎝^-1이었고, 활성화 에너지 ??E는 각각 0.16eV, 0.49eV 및 0.48eV이었다. 300℃에서 열처리한 결과, ??E는 줄어 들고 전도도는 증가하였다. 350℃ 및 450℃에서 열처리한 결과 dehydrogenation 효과로 인하여 n형과 p형은 서로 상반되는 결과를 보였다. 즉, n형 시료의 전도도는 감소하고 ??E는 증가하였지만, P형 시료의 전도도는 증가하고 ??E는 감소하였다. 저온 영역에서 구한 n형 시료의 전도도로부터 hopping 활성화 에너지를 구한 결과 0.085eV이었다. Thin n-type and p-type a-Si:H films were prepared by rf glow discharge decomposition of silane mixed with 7×10^-3 parts per volume of phospine or diborane. All specimens were deposited on glass substrates held at 120℃. In order to determine the doping effects the opital absorption and dc conductivity of these specimens were measured after annealing at various temperatures. The optical gap was 1.73eV in the case of the n-type specimens, 1.80eV for the p-type, and 1.86eV undoped. This showed that the gap width decreased as the doping increased. The room temperatuer conductivities of these specimens annealed at 250℃ were 2×10^-2Ω^-1㎝^-1, 5×10^-8Ω^-1㎝^-1, and 5×10^-7Ω^-1㎝^-1, respectively, and the activation energies, ??E, of these specimens were 0.16eV, 0.49eV, and 0.48eV, respectively. For specimens annealed at 300℃, ??E decreased and the conductivity increased. When these specimens were annealed at 350℃ and 450℃, dehydrogenation caused opposite effects on the n-type and p-type specimens; the conductivities of n-type specimens decreased and ??E increased, but the conductivities of p-type specimens increased and ??E decreased.From an investigation of the temperature dependence of the conductivity of the n-type specimen in the low temperature region, we determined that the hopping activation energy was 0.085eV.

各種 刈取機의 性能 比較 試驗 硏究

崔圭洪,李哲周 건국대학교 1968 學術誌 Vol.9 No.1

① The aim of this study is on the supply of harvester which has selected as the most suitable one to farm condition after reformation and also on the comparative experiments of efficiency of man power and engine power harvester. ② The results of this study shows that the man power harvester ha94 times of sickle and that of engine power harvester has 7 times, and it also shows the man power harvester is not suitable for wheat cutting. ③ The man power pulling harvester is the most effective one for rice harvesting farm condition for substituting with sickle. ④ It is the urgent problem in the future that a study of harvester with binder which also might be used for wheat harvesting and the study of the new harvester as a attachment of power tiller.

大學生의 스포오츠 關心度에 關한 調査硏究 : 團體競技와 個人競技를 中心으로

崔圭喆,蔡煥國 동국대학교 경주대학 1984 慶州大學論文集 Vol.3 No.-

지역사회 주민의 인비인후과 영역질환의 사회의학적 조사

최상규,남철현,김무룡,김기열,강영우,문기내 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-

This study was conducted to examine ear, nose, and throat diseases of community residents and related factors in Korea. 475 people who were experienced in suffering from the ear, nose, and throat diseases were chosen as the subjects of this study. Data were collected in Daegu, Kimchon, Andong, Pohang, Kyungsan from February 1, 2000 to May 30, 2000. The results of this study are summarized as follows. 1. Among ear, nose, and throat diseases, the incidence of throat diseases was highest (42.3%). The incidence rate of nose diseases was 31.9%, while that of ear diseases was 25.7%. The incidence of these diseases were significantly related to the variables of sex, age, occupation, religion, education level, smoking, and drinking. 2. When the respondents were afflicted with ear diseases, 47.7% of them was treated in ear, nose, and throat hospitals or clinics, while 29.4% of them was treated in general hospitals or clinics. 13.2% of them just endured without receiving treatment. 5.7% of them was treated in their homes and 3.9% of them was treated in pharmacies. 3. 28.9% of the respondents was treated for their ear diseases during two weeks; 24.2% 'during one week'; 20.5% 'during three to four days'; 12.6% 'during one to two days'; 9.0% 'during one to two days'; 4.8% 'during over six months'. The period of treatment was significantly related to the variables of sex, age, occupation, marital status, religion, smoking, drinking, and exercise. 4. When the respondents took nose diseases, 27.4% of them was treated in ear, nose, and throat hospitals or clinics, while 24.7% of them was treated in general hospitals or clinics. 18.6% of them just endured without receiving treatment. 17.7% of them was treated in pharmacies and 5.9% of them was treated in their homes. 5. 27.0% of the respondents was treated for their ear diseases during three and four days; 23.6% 'during on week'; 17.3% 'during two weeks'; 13.5% 'during one to two weeks'; 10.0% 'during one to two months'; 8.6% 'during over six months'. The period of treatment was significantly related to the variables of sex, ccupation, religion, education level, smoking, drinking, and exercise. 6. The throat diseases were caused by cold (30.2%), tonsils (29.3%), and bronchitis (15.7%). When the respondents took throat diseases, 26.1% of them was treated in ear, nose, and throat hospitals or clinics, while 25.3% of them was treated in general hospitals. 20.2% of them was treated in pharmacies and 12.4% of them just endured without receiving treatment. 10.3% of them received reatment in clinics, while 5.6% of them was treated in their homes. 7. The level of satisfaction with treatment for ear diseases was 3.58±1.12 points on the basis of 5 points, while that for throat diseases was 3.19±0.085 points. In case of information sources on ear, nose, and throat diseases, 31.8% of the respondents obtained the information from doctors, while 21.4% of them got it from TV or Radio. 15.9% of them obtained it from family members, neighbors, or friends and 10.0% of them obtained it from magazines, newspapers or pamphlet. Only 7.0% of them got it from pharmacists. 8. 67.2% of the respondents thought that mass media dealt with the ear, nose, and throat diseases lightly. 40.6% of them replied that education and publicity of those diseases would be necessary, while 10.7% of them replied those would not be necessary. Among the ear, nose, and throat diseases, the incidence rate of throat diseases was highest (42.3%). The ear diseases showed the highest level of satisfaction with treatment, while the throat diseases displayed the lowest level of satisfaction with treatment. Although the diseases are very serious in Korea, they are dealt with lightly in terms of education and publicity through using mass media. Therefore, the government, otorhinolaryngologists, and related associations must make great efforts to prevent the diseases.