거대 관동맥류에 병발한 급성 심근 경색증 1예

윤혁준,김기식,허승호,박남희,조용원 대한순환기학회 2002 Korean Circulation Journal Vol.32 No.8

청소년의 부적응적 사고와 또래관계의 질이 문제행동에 미치는 영향

이경연, 박기환 가톨릭대학교 사회과학연구소 2010 社會科學硏究 Vol.26 No.-

冷血動物(개구리)에서 日本腦炎 바이러스의 抗體보유에 관한 硏究

이연태,기영진,김광현,최성학,홍장선 단국대학교 신소재기술연구소 1993 신소재 Vol.3 No.-

일본뇌염 바이러스는 극동지방에서 여름철에 Culex tritaeniorhynchus 홍모기를 매개로 사람과 가축에 감염되여 질병을 유발하고 치명적인 결과를 초래하는 무서운 바이러스 질환의 원인체이다. 그동안 끊임없는 연구결과로 1970년 후반부터 일본뇌염 환자발생이 현저하게 감소하였다. 그러나 자연계에서 일본뇌염 바이러스의 생태학적 규명은 아직도 연구되어야 할 과제들이 산적되어 있다. 따라서 이 바이러스의 보유동물에 대한 자연계의 생활환경에 관한 연구가 필요하여 개구리의 항체보유여부를 규명 하였다. 6개도의 야외에서 채집한 개구리 681마리 혈청에 대하여 HI 방법에 의한 항체 분석을 시행하여 다음과 같은 결과를 얻었다. 1. 개구리 총 681마리의 일본뇌염바이러스에 대한 HI항체 보유율은 9.83%였다(p<0.01). 2. 일본뇌염바이러스에 대한 성별 HI 항체 보유율은 수컷이 2.63%(531마리 중 14마리). 암컷이 35.33%(150마리 중 53마리)로 암컷이 약 13배 높은 항체보유율을 나타냈다(p<0.01). 3. 종류별 HI항체 보유율은 북방산 개구리가 100%(1마리 중 1마리), 산개구리 66.66%(3마리 중 2마리), 금개구리 50.00%(36마리 중 18마리), 옴개구리 33.33%(6마리 중 2마리), 참개구리 6.92%(635마리 중 44마리)로 나타났다(p<0.01). 4. 월별 HI 항체 보유율은 11월이 66.66%(9마리 중 6마리)로 가장 높았으며 10월이 37.50%(32마리 중 6마리), 9월이 26.05%*142마리 중 37마리), 8월이 22.85%(35마리 중 8마리), 9월이 26.05%(142마리 중 37마리), 8월이 22.85%(35마리 중 8마리), 6월이 1.65%(241마리 중 4마리), 5월은 0%(222마리 중 0마리)이였다(p<0.01). 5. 지역별 일본뇌염바이러스에 대한 HI 항체보유율은 경기 16.56%(157마리 중 26마리, 충남 15.69%(172마리 중 27마리), 전북 7.14%(168마리 중 12마리)였고, 충북(71마리)과 강원(78마리)은 0%였다(p<0.010. Japanese Encephalitis virus(JEV) infects human and domestic animals via mosquitoes, Culex tritaeniorhynchus, and cause diseases that results in serious consequencies in Far East area during summer season. Thanks to the continuous research on this virus, the frequency of occurrence has been greatly diminished since the second half of 1970. But, there are still much work needs to be done on the virus, especially on their ecology in nature. We studied the antibodies in frogs based on the perspective that the research must be done on the carrier animals of the virus. We tested sera by HI method from 681 frogs captured randomyl in the six provinces. The results are summarized as following 1. Antibody positive rate to HI was 9.83%(67 out of 681). 2. Among these positive frogs, positive rate for male was 2.63%(14 out of 531), and positive rate for famale was 35.33%(53 out of 150). the positive rate for female is higher than that of male by about 13 times. 3. Different positive rates were shown among different species; 100%(1 out of 1) in Rana temporaria ornativentris, 66.66%(2 out of 3) in Rana temporaria orativentris, 50%(18 out of 36) in Rana plancyi chosenica, 33.33%(2 out of 6) in Rana rugosa and 6.92%(44 out of 635) in Rana niglomaculata. 4. When the monthly positive rates were compared, November was the highest as 66.66%(6 out of 9), 37.5%(6 out of 32) in October 26.05%(37 out of 142) in September, 22.85%(8 out of 35) in August, 65%(4 out of 241) in June and 0% in May 5. Areal distribution of positive rate to HI was 16.56%(26 out 157) in Kyung Kee, 15.69%(27 out of 172) in Chung Nam, 7.14%(12 out of 168) in Chun Buk, and 0% both in Chung Buk and Gang Won.

Lithium과 Chlorpromazine의 腦組織中 Catecholamine 含量과 血漿 Corticosterone値에 미치는 影響

洪起男,千然淑 최신의학사 1984 最新醫學 Vol.27 No.3

수종의 상아질 결합체의 전단강도 및 결합부의 형태에 관한 비교연구

김용기,김윤철 大韓小兒齒科學會 1996 大韓小兒齒科學會誌 Vol.23 No.4

The purpose of this study was to evaluate the shearbond strength and resin-dentin interface of three different dentinal bonding systems in primary and permanent teeth. Thirty extracted human primary molars and premolars, which were non-carious and free of obvious defect, were selected for this study. All specimens were divided into six groups with two groups allocated for each of the three dentinal bonding system(All-bond 2, Scotchbond Multi-Purpose, Gluma bonding system). After completion of bonding composite to dentin using each tested dentin bonding system, bond strength measurement and histological observation were performed. The results are as follows; 1. All-bond 2 and Scotchbond Multi-Purpose, A good quality hybrid layer was identified, the morphology of which could be equated with the zone of H-E and Brown-Brenn staining. In Gluma bonding system, hybrid layer was very thin, and separated from the solid polymer. 2. All-bond 2 had the highest mean shearbond strength, followed by Scotchbond Multi-Pur-pose and Gluma bonding system in both primary and permanent teeth. There was no statistically significant difference between All-bond 2 and Scotchbond Multi-Purpose. Statistically significant difference could be found between Gluma bonding system and the other two groups(p<0.05). 3. The fracture patterns observed were mainly the mixture of adhesive failure and dentin dettachment pattern in All-bond 2 and Scotchbond Multi-Purpose while adhesive failure prevailed in Gluma bonding system.

도시화에 따른 지표수 관리기법

최윤영,정광옥,지홍기 영남대학교 지역발전연구소 1997 새마을지역개발연구 Vol.20 No.-

This study is aimed at the development of management of surface water in the urban environment. In the civilization process of riverside, natural and humane environment has changed continually, and there are more frequent changes in flux and quantity of surface flow in civilized riverside than in natural riverside. Civilization concerned with the concentration of population and activity and expanding the range of urban area changed natural environment, and humane activity in urban area caused appearance of new hydrologic cycle system. This study defined the concept of urban environment and the role of river and investigated the change of natural environment caused by the civilization of urban area, the change of recharge from surface flow fluxing characteristics in urban river, and flux for suggesting the organization system of surface flow in urban river. To make the device which reasonably organize the surface water flow insurance in urban environment, this study systematically suggests the surface water flow management on flood-control, water-use and environmental aspect. To make the device which synthetically manage the surface water flow in urban river, this study suggests urban river synthetically management model which aims for harmony with nature which contains the concept of amenity, connecting with space, devotion to local for river development and preservation.

耕耘實驗을 爲한 人工土壤의 物理的 特性에 關한 硏究

金基大,許潤根,金滿秀,金聲來 충남대학교 농업과학연구소 1978 農業技術硏究報告 Vol.5 No.2

For improvement and new design of tillage equipments, indoor test is very useful and more desirable than outdoor because the experiment of ourdoor is very difficult and its cost is expensive. This study was carried out to determine the physical properties of artificial soil suitable for the indoor test with the soil bin manufactured at the workshop of the Dept. of Agricultural Machinery Engineering. The artificial soil being studied was made with very similarity to the natural soil of the experimental plots of Chungnam National University, and it consist of 39.35 percent, by weight of bentonite and 48.10 percent of sand with 12.55 percent of SAE 10W oil. The results are summarized as follows: 1. Bulk density increased with increasing number of rolling, and its relationship could be expressed. y=1.073200+0.07080x-0.002263x^2 where, y=bulk density(g/㎤), x=number of rolling. These results could be explained that the effect of rolling velocity on the bulk density was not singnificant in the range of 4.5∼10.4 cm/sec. 2. The absolute soil hardness depended directly upon number of rolling, and their relationship could be expressed by the equation. y=37.74(0.64+0.17x-0.0054x^2)/(3.36-0.17x-0.0054x^2)^3. where, y=absolute soil hardness(kg/㎤), x=number of rolling. 3. Relationship between the bulk density and absolute soil hardness could be expressed by the equation; y=37.74(2.46 x-2.02)/(6.02-2.46x)^3. where, y=absolute soil hardness, x=bulk density. 4. The cohesion and the angle of internal friction of artificial soil were increased with increasing its bulk density. According to the cohesion and angle of internal friction, at the range of 1.60∼1.75(g/㎤) of bulk density, this artificial soil was similar with sandy loam of 29.5% moisture content of natural soil. 5. Sliding-fricfion coefficient of steel plate on the artificial soil was 0.3∼0.4 and rubber plate on it is 0.64∼0.72. Those values were very similar with those of natural soil being studies by many others.

착화제와 유기산이 Wistar rat체내의 Sr 분포에 미치는 영향

이기호,이제호,박상윤,이승훈,유용운,윤택구 대한방사선 방어학회 1990 방사선방어학회지 Vol.15 No.2

Wistar rat에 85SrCl2를 꼬리 정맥에 주사하여 체내 기관과 혈액 내 분포, 잔존율을 조사하였고 착화제와 유기산을 투여하여 혈장 단백질에 결합하는 Sr양의 변화를 측정하였다. 혈액내에서 Sr은 혈장에 60%, 세포에 40%부착되어 이동하였다. 혈장에 존재하는 Sr중 약 50%정도는 혈장 단백질과 결합한 상태였고, 세표에는 세포 표면에 가볍게 부착되어 있었다. Erythrocyte나 granulocyte보다 lymphocyte에 많은 양의 Sr이 부착되어 있었다. 투여후 초기 1시간 이내에 혈액 내에서 급격히 감소하여 뼈에 침착되었다. 이때 각 기관에서도 Sr의 잔존율은 24시간 이내에 크게 감소하였고, 뼈로 침착된 Sr은 24시간 이후에 서서히 감소하였다. 착화제 EDTA, EGTA 및 DTPA를 투여한 경우, 혈장 단백질에 결합하는 Sr의 양은 대조군의 57%에서 27-33%로 감소하였으며 citrate 및 oxalate의 투여시는 이값이 19%와 40%로 각각 감소하였다. 85SrCl2 was injected to the tail vein of Wistar rats and investigated its distribution and clearance in the tissues and blood. We also measured the changes in Sr binding to the blood plasma protein by administrating chelating agents and organic acids. For the blood, 60% of the Sr occurred in the plasma and 40% on the cell membrane. Fifty percent of Sr in the blood plasma was bound to plasma protein. Sr on the cell membrane seemed to be bound loosely. The binding in the lymphocyte was higher than in the erythrocyte and granulocyte. Within one hour Sr was quickly disappeared from the blood stream, to be accumulated in the bone. Twenty four hours after the injection, Sr decreased rapidly in the organs of soft tissue, but slowly in the bone. The binding of Sr to plasma protien decreased from 57% of the control to 27-33% in the group treated with chelating agents. EDTA. EGTA and DTPA and to 19% and 40% in the groups treated with organic acids, citrate and oxalate, respectively.

대장에 발생한 샘암종에서 MUC1과 MUC2 점소 발현의 의의

이윤경,이주호,이용,심재영,박정훈,오수섭,박진실,기근홍 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.2

Background : Mucins possess the unique function of protecting and lubricating the epithelial surface and other important functions such as call growth, direct implication in the fetal development, the epithelial renewal and differentiation, the epithelial integrity, carcinogenesis, immune regulation, cellular adhesion and metastasis. Purpose : This study was done to provide the significance of alteration of MUC1 and MUC2 expression in colorectal adenocarcinoma, A series of 131 colorectal adenocarcinomas including 11 mucinous carcinomas were screened immunohistochemically for their expression of MUCI and MUC2, Materials and mehtods : Of 131 carcinomas, 76 (58,5%) were MUCI positive and 91 (68, 9%) were MUC2 positive, In normal colonic goblet cells, MUCl was not expressed but MUC2 was expressed in cytoplasm, Conclusion There were up-regulation of MUCI and down-regulation of MUC2 in colorectal carcinomas, The frequency of MUC2 positivity according to differentiation was statistically reliable. (p=0.0001)

인공호수 주변지역의 농업기후분석 : Ⅰ. 담수전 기온 및 강수량 분포 추정 Ⅰ. Monthly Temperature and Precipitation Pattern under No-lake Scenario

김기철,윤진일 경희대학교 부설 식량자원개발연구소 1992 硏究論文集 Vol.13 No.-

Changes in energy and water balance due to an artificial lake may bring about the local climatic change. Several occasions have already been reported about degradation of agricultural production environments at major dam construction sites in Korea. This study was carried out to quantify the potential effects of the inadvertent climate modification due to artificial lakes. For the first phase of the study, climatological normals were estimated for Juam region which is 20 × 30 km in size and affected by a large reservoir formed after a dam construction. Monthly mean temperature and precipitation values were calculated for each 250 × 250 m grid cell based on a statistical topoclimatic model developed by the Meteorological Research Institute under the 'No-lake scenario'. Six automated weather stations were installed for verification purpose in the second phase of the study. According to the calculated values, the distribution of mean temperature showed a decreasing pattern with the elevation, and the Lake Juam area was warmer than the surrounding region. Estimated values for precipitation differ by as much as 75mm from the observed value and the range of annual precipitation was 654 - 1852mm. The lower valley region where the Lake Juam is currently formed showed more precipitation than the surrounding mountains in general.