Hepatic Cirrhosis Occurring in a Young Woodchuck(Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus(WHV)

Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea

확대행렬의 고유치감도를 이용한 미소신호안정도 해석

문채주,장영학,심관식 木浦大學校 工業技術硏究所 1998 工業技術硏究誌 Vol.8 No.-

New eigen-sensitivity theories of the augmented matrix are applied to small signal stability analysis of EPRI one-machine infinite-bus system and New England 10-machine 39-bus test system. First and second order eigenvalue sensitivities are computed for changes of the parameters of line reactance and controllers including exciter, turbine/governor and PSS. It is found in many cases that since eigenvalue trajectories for parameter changes are nonlinear and first order estimate is not adequate for relatively large variation in parameters. Hence second order estimate is essential to guarantee accuracy for wide range of parameter changes.

함치성낭종과 단방성 법랑모세포종의 감별에 관한 방사선학적 연구

나채영,최갑식 大韓口腔顎顔面 放射線學會 1993 Imaging Science in Dentistry Vol.23 No.2

The purpose of this study was to obtain some informations for the radiographic differential diagnosis between dentigerous cysts and unicystic ameloblastomas in the mandible. The authors observed and compared the clinico-radiographic features of 38 cases of dentigerous cyst and 32 cases of unicystic ameloblastoma associated with impacted mandibular molar. The obtained results were as follows: Dentigerous cysts occurred the most frequently in the 3rd decade, but unicystic ameloblastomas in the 2nd decade, and both lesions occurred with slight predilection in males. Average of lesional size of unicystic ameloblastomas was larger than that of dentigerous cysts, and lesions of over 25㎠ were only in unicystic ameloblastomas. Cortical thinning and expansion were more frequently observed in unicystic ameloblastomas at 72.9% than in dentigerous cysts at 15.8%. Dentigerous cysts showed smooth border at 89.5%, but unicystic ameloblastomas showed smooth border at 53.1% and scalloped border at 46.9%. Dentigerous cysts showed well-defined outline at 81.6%, but unicystic ameloblastomas showed well-defined outline at 53.1% and moderate-defined outline at 46.9%. In both lesions, the mandibular 3rd molar was the most frequent causative tooth. Average of distance between the cemento-enamel junction and lesional wall attachment of the causative tooth was longer in unicystic ameloblastomas than in dentigerous cysts. Severe displacement of causative tooth was more frequent in unicystic ameloblastomas at 62.5% than in dentigerous cysts at 23.7%. Dentigerous cysts showed homogeneous lesional radiolucency at 89.5%, but unicystic ameloblastomas showed inhomogeneous lesional radiolucency at 53.1%. Root resorption of adjacent tooth and displacement of mandibular canal were more frequent in unicystic ameloblastomas at 65.2% and 61.5% than in dentigerous cysts at 15.8% and 38.1% respectively.

우리나라 南東地方의 環境放射線 線量率의 決定 (1980年度)

盧在植,李鉉德 대한방사선방어학회 1980 방사선방어학회지 Vol.5 No.1

A portable count-ratemeter and a thermoluminescent detector (CaSO₄:Dy) have been used to obtain total gamma dose rates at approximately 50 locations during the course of several survey trips in the southeastern Korea. The purposes of these measurement were to provide a future reference data and to establish the approximate range of population exposure to the natural environmental radiation. The natural levels encountered ranged from a low of 14.6 microroentgen per hour to a high of 18.9 microroentgen per hour with a mean of 16.3±1.1 microroentgen per hour. Among these results are the relatively high natural dose rate levels in the Masan area and Yangsan-Tongdosa area with the relatively low natural dose rate levels in the Gyeongsan-Cheongdo area and the Samrangjin-Jinyeong-Gimhae area.

한국의 環境放射線準位(1961∼1980)

盧在植 대한방사선 방어학회 1981 방사선방어학회지 Vol.6 No.1

This report presents the results of the environmental radiation program at Korea Advanced Energy Research Institute(KAERI)(37。38´N, 127。05´E) and its surroundings for the las two decades(January, 1961 through December, 1980). In the 1960s, the monthly mean levels of environmental external radiation encountered ranged from a low of 14.2 microroentgen per hour to a high of 42.2 microroentgen per hour with a mean of 21.7 microroentgen per hour, while in 1970s it ranged from a low of 12.4 microroentgen per hour to a high of 40.8 microroentgen per hour with a mean of 20.4 microroentgen per hour. It may, therefore, be said that environmental radiation dose rates remained almost unchanged for the two decades except for the second half of 1960s and the first half of 1970s during which the off-site and on-site patterns were frequently unlike in form and intensity with appreciable differences between average values. Particular results of interest with respect to the effects of the fallout gamma dose rate on environmental radiation show that elevated levels were encountered in association with the deposits of fresh debris from Chinese and Rrussian nuclear weapons tests in particular.

열산화된 알루미늄이 첨가된 Tin black filter를 가지는 메탄센서

권오식,황숙이,심창현,임채근,방영일,김봉철,허증수,류기홍,이덕동 경북대학교 센서기술연구소 2002 센서技術學術大會論文集 Vol.13 No.1

하악과두에 발생된 연골종

나채영,최갑식,신홍인 慶北大學校 齒科大學 1992 慶北齒大論文集 Vol.9 No.1

저자들은 우측 악관절부의 지속적인 둔통과 불편감을 주소로 경북대학교 병원 치과에 내원한 32세 남자 환자에서 임상·방사선학적 검사와 조직병리학적 검사를 통해 하악과두에 발생된 외연골종으로 진단하고 아래와 같은 사항을 관찰하였다. 1. 임상적으로 우측 관절부에 둔통을 동반한 종창과 개구제한 및 관절잡음이 있었다. 2. 방사선학적으로 악관절 측방 단층 X선사진상에서 우측 하악과두의 피질골상에 반월형의 침습과 경화가 나타났고, 전산화 단층 X선사진상에서는 경계가 분명한 연조직괴가 관찰되었다. 3. 조직병리학적으로 불규칙하게 증식된 연골세포들은 특기할 형태적 변화없이 초자양 연골기질내에 군집되었으며 골화양상없이 국소적인 석회화가 관찰되었다. The chondroma, a benign tumor made up of mature hyaline cartilage, is uncommon in the bones of the maxilla and mandible. The authors report a case of periosteal chondroma arising on the right mandibular condyle neck in 32-year-old male with review of literature. The clinical, radiographic, and microscopic findings were as follows: 1. The patient complained of continuous dull pain and swelling on the right mandibular condyle area for 3 years. 2. Radiographically, semilunar-shaped erosion with marginal sclerosis was evident on the cortical bone of right mandibular condyle. The computed tomograph also revealed well-defined soft tissue mass at the same area. 3. Microscopically, this lesion was composed of mature lobules of hyaline cartilage. The proliferated small chondrocytes arranged into clusters without atypia revealed focal calcification.

부분적 무치아증 : 다수 치아의 선천성 결손 Congenitally multiple teeth missing

박상억,나채영,최갑식 慶北大學校 齒科大學 1992 慶北齒大論文集 Vol.9 No.1

1984년에서 1991년까지 경북대 병원 치과에 내원하여 파노라마 방사선사진을 촬영한 환자들 중 선천성 결손치의 수가 4개 이상인 부분적 무치아증 환자 44명(남자 22명, 여자 22명)에서 나타난 401개의 선천성 결손치를 조사분석하여 다음의 결과를 얻었다. 1. 결손치의 수는 4개에서 22개로 다양하였으며 5개의 치아가 결손된 경우가 8증례로 가장 많았다. 2. 각 치아별 호발빈도는 상악 제2소구치, 하악 제2소구치, 상악 측절치, 하악 제1소구치순이었다. 3. 결손치가 양측성으로 발생한 경우는 약 60∼70%였다. 4. 치열의 4 quardrant 모두에서 결손된 치아는 제2소구치가 가장 많았다. The expression of congenitally missing teeth may range from one or a few missing teeth(hypodontia) to the agenesis of numerous teeth(oligodontia) to the failure of all the teeth to develop(anodontia), but clinically the term of oligodontia means four or more congenitally missing teeth in dentition. The authors observed 44 patients of oligodontia cases especially having four or more missing teeth who came to the Dental Infirmary of Kyungpook National University Hospital. In this study, all of 44 patients represented congenitally missing teeth bilaterally. Thirty-eight patients represented that missing teeth were found bilaterally in both jaws, but only four patients in the upper jaw and two patients in the lower jaw. And the maxillary second premolar was absent most frequently, followed by the mandibular second premolar, the maxillary lateral incisor, the maxillary first premolar, in descending order of frequency.

하악 제1대구치와 소구치의 과잉치근에 관한 방사선학적 연구

박미경,최갑식,나채영 大韓口腔顎顔面 放射線學會 1993 Imaging Science in Dentistry Vol.23 No.1

The purpose of this study was to evaluate the prevalence and distribution of additional root in the mandibular 1st molars and premolars by means of the analysis of the full mouth periapical radiographs in 6,082 patients visited the Dental Infirmary of Kyungpook National University Hospital from March 1989 to February 1993. The results were as follows: 1. The incidence of additional root in the mandibular 1st molars was revealed to be 9.32% in total examined patients, and there was a higher prevalence in males(11.35%) than in females(7.46%). And bilateral occurrence was revealed to be 4.26%. 2. The incidence of additional root in the mandibular premolars was to be 3.57% in total examined patients, and there was a higher prevalence in males(4.28%) than in females(2.91%), And bilateral occurrence in the 1st premolars was revealed to be 1.53%.

한랭작업 근로자들의 건강위해에 관한 연구

박호추,정설미,문덕환,이종태,김대환,김정호,최재일,황용식,이용희,이채언 大韓産業醫學會 1999 대한직업환경의학회지 Vol.11 No.1

In order to evaluate the status of cold exposure and its health hazards of workers at cold storage workplaces and to provide basic data for effective health care, the author measured core temperature and also observed clinical symptoms and signs, past and present history, and general health examination data on 99 cold exposed workers for exposure group and 96 non-exposed workers for control group working at 2 food refrigerating companies in Pusan area from January 6, 1998 to February 24, 1998. The results were as follows: 1. There was statistically significant difference in water intake between the exposure and control group and increased urine volume, urine frequency in exposure group without statistically significant difference. 2. Past and present illness in exposure group were hypertension (18.2%), hepatopathy (8.1%), gastro-intestinal disease(7.1%), arthritis (4.0%), intervertebral disc herniation(4.0%), and so on, and hypertension, arthritis was statistically significant difference compared to control group. 3. Symptoms in exposure group were fatigue(89.9%), headache (64.6%). drowsy(63.6%), neck stiffness(59.6%), excessive food intake(59.6%). general weakness(58.6%), hunger(58.6%), numbness(54.5%), and so on, and there was statistically significant difference between the exposure and control group except fatigue, drowsy. 4. As results of clinical test abnormality rate of the systolic, diastolic blood pressure and electrocardiogram were significantly higher in exposed group than control. 5. Core temperature in exposure group was statistically significantly lower than control group and the highest statistically significant inverse correlation with the working hours and working frequency of daily mean cold storage. As above results, the author suggested that the further studies should be conducted to evaluate the health status of workers about chronic health effects in cold workplaces and to establish effective health care methods for them.