Fin이 부착된 PCM 축열조의 효율성 분석

원성필,이근식 울산대학교 1985 연구논문집 Vol.16 No.2

Fig.1과 같이 PCM(Phase Change Material)蓄熱 system內의 熱傳達을 증가시킬 目的으로 PCM內에 얇은 금속 fin을 설치한 것을 model로 하여 善熱單位의 길이와 폭, fin 두께 및 벽면온도의 변화에 대한 效率的인 蓄熱條件을 熱力學 第一法則과 第二法則을 適用하여 提示하였다. A thermal energy storage using a PCM with fins is shown in Fig.1. Fins are set up increase the heat transfer rate within a PCM. Effective storage contraints have been presented by applying the first and the second law of thermodynamics when various parameters, e.g., the length and width of the storage unit, the thickness of the fin, and the wall temperature, are changed.

Rifampin으로 예방적 항결핵요법 후 Etanercept를 사용 중인 류마티스 관절염 환자에서 발생한 결핵 1예

이혜원,이태화,김근태 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.2

Tuberculosis infection is a rare but important side effect of anti-tumor necrosis factor agents that are widely used in the treatment of rheumatoid arthritis. A 63-year-old woman with rheumatoid arthritis who had been treated with etanercept visited the hospital because of polyarthralgia and right neck pain. Before use of etanercept, she was treated for latent tuberculosis. When the patient came to the hospital, she had no respiratory symptoms. But, we found abnormal findings in regularly follow-up chest x-ray. She was diagnosed as reactivation of latent tuberculosis by bronchoscopy. After stopping the etanercept, she has been treated with anti-tuberculosis agents, disease modifying anti-rheumatic drugs, and intra-articular steroid injection. We report here on this unusual case along with a review of the relevant literature

담관 낭선암 1례

박건욱,홍기봉,정재열,노명환,한상영,최석렬,신우원,나서희 동아대학교의과대학 1997 동아의대학술지 Vol.9 No.1

한국의 광물명칭에 관한 연구

정원우,상기남,이윤종,김중욱,곽기근 慶北大學校 科學敎育硏究所 2003 科學敎育硏究誌 Vol.27 No.-

The purpose of this study is to investigate historical records on Korean mineral terms. One of the earliest records on Korean mineral terms is the Donguebogam(oriental medical handbook) written by Heo Jun in 1613. Most of geological investigation of Korea was accomplished by Japanese geologists in the period of the 1900~1945. Korean mineralogical records have been described by Gottsch(1886), Kwasaki(1935), Kinosaki(1937, 1940), Tsuda(1941, 1952) and Galleger(1963). Korean mineral species have been described about 300 species by KIER(Korea Institute Energy and Resources) in 1977. In the results of this study, Comparisons and classifications between current korean mineral terms and korean traditional and chinese medical mineral terms are suggested.

NATM 통신구터널 지보패턴에 관한 연구

홍원표,한중근,이상곤 중앙대학교 기술과학연구소 1998 기술과학연구소 논문집 Vol.28 No.-

우리나라에서 NATM 통신구터널에 적용되고 있는 암반분류형태 및 지보패턴은 지하철 도시터널과 같이 대형단면 터널에 적용되는 기준을 그대로 적용하고 있는 실정이다. 그러나 NATM 통신구터널은 대개 소형단면터널이며 깊은 tal도에서 시공되는 것이 일반적이다. 따라서 NATM 통신구터널의 설계 및 시공시에는 적절한 지반암반의 정량화 및 공학적 분류법을 별도로 마련하여 이 분류에 근거한 적합한 지보모델을 제시할 필요가 있다. 본 연구에서는 NATM 통신터널에 적합한 표준지보패턴과 암반분류모델을 7등급으로 구분 제시하며 제시된 암반 분류등급별 지보패턴에 대한 합리성이 터널시공사례에 대한 유한차분해석을 통해 검증된다. The classification of rock-mass and its reinforcement pattern used for Communication Cable Vault in Korea have been actually used such methods that applied to largesectional tunnel construction such as Subway urban-tunneling. However, in the case of small sized tunnel works for Communication Cable Vault which are generally adopted at deep depth, the proper reinforcing support model should be suggested on the basis of quantitative classification of rock-mass for design and construction. This paper presented standard reinforcement pattern and classification model of rock-mass for NATM of Communication Cable Vault. They are divided in to 7-categories of grades and reasonability of these suggestion is ascertained from numerical analysis for the construction of these suggestion is ascertained from numerical analysis for the construction of Tunnel.

방음터널 단면형상에 따른 소음저감 특성 평가 : 터널 내부소음을 중심으로

이원열,김하근,오양기,주문기 대한건축학회 2004 대한건축학회논문집 Vol.20 No.2

It seems inevitable for residential buildings to be high-rise and allocated near traffic roads due to the crowdedness in urban areas. Acoustic environments in those areas have been seriously deteriorated by the increase of traffic vehicles. But sound barriers have a limitation in controlling noise due to diffraction noise from sound barriers. Hence sound barrier is not effective to protect the high-rise apartment from traffic noise. This work aims at evaluating characteristics of noise reduction according to the tunnel section shapes by using 1/5 scale model. We carried out a number of field measurements for 1/5 scale model of noise barrier tunnels with various sectional shapes. The results were as follows 1) The level difference was ranged from 0㏈ to 1.2㏈ according to the opening in the ceiling 2) The level difference was ranged from 0.4㏈ to 2.3㏈ when sound-absorbing materials were increased up to 45% of all surface areas. 3) There was generally good agreement between prediction results and the measurement results.

滌痰湯이 흰쥐의 高脂血症에 미치는 영향에 관한 實驗的 연구

김근우,구병수,이원철 동국대학교 경주대학 1997 東國論集 Vol.16 No.2

This study was done in order to investigate the effect of choˇkda~m-t'ang on hyperlipidemia. Methods: Hyperlipidemia was induced in male rats by oral administration of cholesterol(50㎎/㎏) diet for 45 days. To carry out an experiment, the rats was divided into three groups. The first group(normal group) was fed on water for 45 days. The second group(control group) was administered 5% ethanol instead of water only for first 15 days and subsequently administered cholesterol(50㎎/㎏ p.o) diet with 5% ethanol for the second 15 days and fed on a solution of salt for the last 15 days during total 45 days. The third group(sample group) was administered in the same way with the control group for 30 days and injected choˇkda~m-t'ang extract(100㎎/㎏) for the last 15 days during total 45 days. And measured the levels of serum total cholesterol, serum HDL-cholesterol, serum total lipid, serum triglyceride, serum phospholipid, hepatic lipid peroxide and activity of serum AST·ALT. Results: 1. From fifteenth day, the level of total cholesterol was decreased with the significance in the sample group as compared with the control group. 2. The level of serum HDL-cholesterol was increased in the sample group compared with control group, but did not show significance. 3. The level of serum total lipid was decreased with significance in the sample group as compared with control group. 4. The level of serum triglyceride was decreased with significance in the sample group as compared with control group. 5. The level of serum phospholipid was decreased in the sample group compared with control group, but did not show significance. 6. The level of hepatic lipid peroxide was decreased with significance in the sample group as compared with control group. 7. The activity of serum ALT was decreased with significance in sample group as compared with control group, but that of serum AST was not significance. Conclusion According to above results, it is considered that choˇkda~m-t'ang injection groups have recovering effect on the hyperlipidemia induced by oral cholesterol administration in male rats. This might be suggest that choˇkda~m-t'ang have recovering effect on arteriosclerosis and cerebral vascular accidents. Choˇkda~m-t'ang increase body's capacity of controling abnormal lipid metabolism, it can be used to prevent hyperlipidemia and related diseases.

敎育大學 實科 實驗實習의 效率化를 위한 資料開發 硏究

鄭原圭,尙貞基,鄭模根,李時元 釜山敎育大學 1987 부산교육대학 논문집 Vol.23 No.1

This study is to research the better ways of management in the practical arts-education in primary schools. The primary school teachers' concrete experiences are made use of to improve their teaching methods in teachers college, a teacher training institute. Therefore this research is supposed to be able to fix on the aim of practical arts-education. Accordingly the questionaires of the problems caused on the scene of education are given to the present teachers in the seasonal system of Pusan Teachers College and Jinju Teachers College. The aim of this research is to develop the materials to improve the educational effectiveness in the practical art-education of teachers college. The result is as follows : 1. According to the questionaires, the problems in the education of the practical course for elementry schools are mainly due to the deficiency of its materials. On the other hand, the teaching methods depending on experiment and practice together should be applied to the class. 2. In the current practical textbook, experiment, practice and observation are shown in the units separately in the contents. The Fifth Educational Revised Plan compared to the current educational curriculum, the units of computer and life are newly showed in the life function scope of the sixth grade textbook. Besides the contents of teaching and the factors of teaching are revised a little. The current educational curriculum, therefore, should be supplied more faithfully. 3. In order to develop the textbook of the practical arts-education of the teachers college, the contents of practical arts-education textbook mainly by experiment and practice are made up of the five scopes of the departments of agriculture, commerce, fishing, household management, etc... 4. To get rid of the formal procedures of abstraction and theory, the practical arts-education of the teachers college quickly needs to make the practical application of audiovisual aids and to introduce the manufactured mechanical apparatus helpful to developing the practical materials by itself. 5. At the departments of practical arts-education of the nation-wide Teachers Colleges, the facilities and equipments of experiment and practice are now as follows : The Ministry of Education shows the standard of equipments, that is, the 7 kinds of laboratories and 179 kinds of experimental apparatus, but the average rates of laboratories of 11 Teachers Colleges is 10.37 percent. So the Ministry of Education should reconsider the standard of its equipments. 6. To develop the practical arts-education of the teachers college, the general institute of practical arts-education should be set up. The kinds of laboratory and its structure (or scale) are shown on each scope.

스포츠 전문기록원에 관한 교육 프로그램의 필요성

박장근,이원희,최연숙 명지대학교 예체능연구소 2001 藝體能論集 Vol.12 No.-

At the sametime Specialization of Sports recorder, Education program was developed and continued for maintain of specialization and expansion one. For this object, To acquire the following a conclusion 1. To be necessary a course of education for engaging sport recorder 2. A course of study of college to special study for sports recording and decomposition being established. 3. To be necessary development of recording paper for recording management. 4. To various analyze and To build database of recording of game must offer consistent information 5. Korea, for maintain a strong state of sports, Scientifically sports recording, Accurate database of recording, Training specialist, Systematic study. So Sport society and Gorvenment must support this one. Base of this conclusion, special education and management for sports recorder with obligation and duty, being foundation for scientifically and systematic expansion.

한국산 물푸레나무屬 주요 수종의 해부학적 특성

황원중,권구중,박완근,배영수,김남훈 한국목재공학회 2002 목재공학 Vol.30 No.2

물푸레나무속의 물푸레나무, 들메나무 및 쇠물푸레의 해부학적 특성을 광학현미경법과 화상분석법에 의해 조사하였다. 공시 수종간에 연륜 경계의 명확성을 비롯한 도관 요소의 직경, 축방향유조직의 배열상태, 구성세포의 비율에서 차이가 있었다. 구성요소의 방사방향 변이에 있어서, 목섬유 길이, 도관 요소 직경 및 길이는 수심 부위에서 작고 약 10∼15 연륜까지 증가한 후 안정되었다. 결론적으로 본 연구 결과는 물푸레나무속 세 수종의 식별자료 및 성숙재와 미성숙재를 구분하는 재질 지표치로 이용될 수 있을 것으로 생각된다. Anatomical characteristics of Mulpurenamu (Korean ash, Fraxinus rhynchophylla), Deulmaenamu (Manshurican ash, Fraxinus mandshurica) and Sheamulpure (Sieboldiana ash, Fraxinus sieboldiana) grown in Korea were examined by an optical microscopy and an image analysis. Some characteristics such as boundary of annual rings, shape and size of vessel elements, arrangement of axial parenchyma cells in cross section, and cell volumetric composition showed significant differences between the sample species. In radial variation of elements, fiber length and vessel size increased from the pith for about 10 to 15 years and then reached a more or less constant. The results of this study can be used for identification of wood and indices of wood quality in Fraxinus spp.