심첨부 비후 심근증에서 심근 내 미세 관상동맥의 혈류 예비력 평가 : 경흉부 도플러 심초음파를 이용한 연구 Study Using Transthoracic Doppler Echocardiography

윤호중,박철수,신재원,임상현,조은주,정해억,전희경,오용석,정욱성,김재형,최규보,홍순조 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.3

전신성홍반성루푸스 환자에서 발생한 순수어농

김윤정,김해림,박시내,윤종현,이상헌,박성환,김호연 대한내과학회 2004 대한내과학회지 Vol.66 No.4

순수어농이란 발성언어에 대한 이해와 반복에 장애를 보이지만 읽기, 쓰기, 비발성언어에 대한 이해는 보존되는 경우를 일컫는다. 저자들은 45세 루푸스 환자에서 루푸스 혈관염으로 인해 일차 청각 피질을 포함한 왼쪽 관자이랑에 뇌경색이 발생하여 초래한 순수어농 1예를 경험하였기에 보고하는 바이다. Pure word deafness is characterized by an impairment of auditory comprehension and repetition of speech while a preservation of reading, writing, spontaneous speech and ability to comprehend non-verbal sounds. It is caused by trauma, infection in the temporal lobe of brain. In most cases, the lesions are bilateral, in the middle third of superior temporal gyri, but in a few cases unilateral lesions of dominant temporal lobe are localized. We experienced a case of 45 year-old right handed wonman with systemic lupus erythemato년 (SLE) who presented pure word deafness after left temporal lobe infarction including primary auditory center. Her comprehension was impaired, while reading and visual comprehension were normal. Audiometric tests and auditory evoked potentials disclosed no hearing defect. Brain MRI showed a left temporal lobe infarction without abnormal vascular finding in MRA. She wasdiagnosed as pure word deafness due to SLE vasculitis and managed with high dose steroid and cyclophosphamide therapies.

아동 自我槪念 硏究의 方向과 課題

문혜옥,윤미현 서라벌대학 1996 논문집 Vol.10 No.-

The self-concept is learned and formed within the social interaction, and its development depends on the personal environment involving the individual. So the roles of significant others are very important to build one's self-concept. The purpose of this study is to provide the basic material for a study to lead positive self-concept child. Direction and tasks for a study on the self-concept of child are as follows; 1) a study on influence of parents of the self-concept development child is a very variety. But a study for influence on teacher and peer and the major determinants of community are much needed. 2) The manifold and systematic study of masure instrument of the self-concept in child is needed. 3) For compare of children of average intelligence and mental retardates, the masure instruments of the self-concept in child are a varied needed. 4) The periord of the development of ego-identity is to adolescence. There for a study of the self-concopt with sex role identity, social adjustment, selection of job, and influence of peer for development of the self-concept are a varied needed.

저선량 γ선 조사가 고추의 광합성과 광 스트레스 경감에 미치는 효과

이혜연,김재성,백명화,박순철,박연일 한국환경농학회 2002 한국환경농학회지 Vol.21 No.2

고추 종자에 저선량 γ선을 조사시킨 고추 식물체의 생육과 광합성 능 및 광 스트레스 반응에 미치는 영향을 조사하였다. 저선량 4 Gy가 조사된 고추 식물체에서 광합성에 의한 산소발생이 대조구에 비해 1.5배정도 높은 것으로 나타났다. 고추 잎에 900 μmol/㎡/s의 빛의 세기로 광저해를 4시간 유도하였을 때 최대 광합성능 (Pmax)이 대조구의 경우 20%정도 감소되는 반면 4 Gy 조사구는 3% 정도의 감소를 보였다. Fv/Fm는 광저해가 진행됨에 따라 감소되는 경향을 보이며 대조구의 경우 4시간 처리시 fv/Fm 값이 50% 정도 감소되는 것을 볼 수 있었다. 반면 4 Gy조사구는 fv/Fm값이 대략 37%정도 감소되어 대조구에 비해 광 스트레스에 대해 덜 민감한 것으로 나타났다. Fo는 광저해가 진행됨에 따라 거의 변화가 없었으며 대조구나 4 Gy 조사구 사이의 차이도 거의 없는 것으로 나타났다. 광계Ⅱ의 광양자 수율인 Φ_PSⅡ과 광계Ⅱ 반응중심에 의한 여기 포획률을 나타내주는 1/Fo-1/Fm 또한 광저해가 진행됨에 따라 감소되었으며 4시간을 처리했을 경우 각각 대조구는 47%, 4 Gy 조사구는 30%의 감소를 볼 수 있었다. 비광화학적 소멸인 NPQ는 광저해가 진행됨에 따라 감소되는 경향을 보였으나 대조구와 4 Gy 조사구간에 차이는 없는 것으로 나타났다. 이러한 결과를 볼 때 종자의 종피를 투과한 저선량의 γ선이 식물의 광합성을 증대시키고 동시에 광 스트레스에 대한 저해를 감소시키는 것으로 보인다. The effect of low dose Y radiation on photosynthesis and the reduction of photoinhibition in red pepper plant was investigated. The seedling height, leaf width and leaf length of pepper were stimulated in plants grown from seeds irradiated with the tow dose of 4 Gy. The O_2 evolution in the 4 Gy irradiation group was 1.5 times greater than in the control. To investigate the effect of low dose Y radiation on response to high light stress, photoinhibition was induced in leaves of pepper by illumination of high light (900 μ㏖/㎡/s). Pmax was decreased with increasing illumination time by 20% in the control, while hardly decreased in the 4 Gy irradiation group. The photochemical yield of PSII, estimated as Fv/Fm, was decreased with increasing illumination time by 50% after 4 hours while Fo did not change. However, Fv/Fm in the 4 Gy irradiation group was decreased by 37% of inhibition, indicating that the photoinhibition was decreased by the low dose Y radiation. Changes in the effective quantum yield of PSII, Φpsu, and 1/Fo-1/Fm, a measure of the rate constant of excitation trapping by the PSII reaction center, showed similar pattern to Fv/Fm. And NPQ was decreased after photoinhibitry treatment, showing no difference between the control and the 4 Gy irradiation group. These results showed the positive effect of low dose Y radiation on the seedling growth and the reduction of photoinhibition.

부산지역 수돗물과 지하수의 중금속 농도

김준연,손지언,김형수,김두희,원미숙,김인식,이혜령 동아대학교 산업의학연구소 2000 산업의학연구소 논총 Vol.- No.5

This study investigated mean airborne CO concention of 15 workplaces, suspected of CO exposure and conducted self-reported questionnaire completion and indirect COHb concentration measure using Micro II Smokerlyzer to healthy 702 adult subjects from 1999 May to 1999 September in order to find a relation of CO exposure and occupational factors, socioeconomic factors, and health related behaviors and confirm the related conditions in the screening test for CO exposure. The results of this study were summarized as follows : 1. In the CO exposed and non exposed group, COHb concentrations of the smokers were 2.55±0.96% and 2.21±0.97% and that got a statistically significant difference, There were not statistically significant differences in the age and total smoking index. Passed times after the last smoking, Working time/day, and working duration were statistically significant difference (p〈0.05). 2. In the CO exposed and non exposed group, COHb concentrations of non-smoking group were 0.94±0.35% and 0.68±0.47% and that got a statistically significant difference. There were not statistically significant differences in the age and working duration but Working time/day was a statistically significant difference(p〈0.05). 3. In the CO exposed group, r-square of multiple regression of the smokers was 38.5 % and passed time after the last smoking, working time/day, and job category were statistically significant differences (p〈0.05). And r-square in the CO non-exposed group was 38.3 % and age, passed time after the last smoking, and total smoking index were statistically significant difference. 4. In the CO exposed group, r-square of multiple repression of the non-smokers was 66.3% and job category and airborne CO concentration were statistically significant differences(p〈0.05). But r-square of non-smokers in the CO non-exposed group was 1.0% and there was not a statistically significant difference(p〈0.05). 5. In the smokers of CO exposed and non exposed groups, relation of COHb concentration and passed time after the last smoking was expressed as exponential function, Y = 2.9182e-0.0083x and r-square of this function was 37.4%. Therefore it was more than 150 minutes that passed time after the last smoking was when COHb concentrations were measured as less than 1%. In conclusion, variable, that was statistically significant to COHb concentraion in the both CO exposed and non-exposed smokers, was a passed time after the last smoking. We suggest that you have to restrict the smoking of smokers at least 150 minutes in the exposed and non exposed group before COHb concentration measure in order to exclude smoking effects

홍화씨 열수 추출 분말을 이용한 우리 밀 라면의 제조

심지연,황은희,이일환,장혜순 동아시아식생활학회 2005 동아시아식생활학회지 Vol.15 No.1

The purpose of this study was to make ramyon from Korean cultured wheat by adding with hot water extract powder from safflower seed in order to add the value of it. The cooking quality, instrumental texture and sensory characteristics of ramyon were analyzed. The ramyons with 0.1%, 0.3%, 0.5%, and 0.7% of hot water extract powder(HEP) from safflower seed, control, and those with 3% and 5% of dried powder(DP) from safflower seed were compared. The yield of HEP was 7.8%. Lightness, redness, Max. weight, strength, hardness, adhesiveness, cohesiveness and springiness were measured. As the amounts of HEP and DP was increasing, ramyons smelled stronger and was getting harder and chewier, while became less transparent and had no difference in elasticity and adhesiveness. In overall acceptability, both control and ramyon with HEP had similar points. From three important factors, appearance, color and smell to make ramyon more acceptable, addition of 0.3~0.5% of hot water extract powder from safflower seed was found to be the best. However, further studies on smells are needed to make processed foodstuffs with safflower seed.

Retinoic Acid가 흰쥐 태자 혀조직의 분화와 Laminin 합성에 미치는 영향에 대한 연구

김혜주,정호삼,서윤경,백두진,김원규,윤지희,이방헌 대한췌담도연구회 2000 대한췌담도연구회지 Vol.5 No.4

저선량 γ선 조사가 참박의 초기 생육과 효소 활성 및 광합성 능에 미치는 영향

이혜연,김재성,백명화,이영근,임돈순 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.3

저선량 γ선 조사가 참박의 초기생육과 생리활성에 미치는 효과를 알아보기 위하여 참박 종자에 γ선을 O~2OGy 수준으로 조사하여 생육을 관찰하였다. 저선량 γ선에 의한 참박의 초기생육은 대조구에 비해 4~16Gy에서 다소 증가하였고, 생육 조사시 측정한 자엽의 경우 catalase와 peroxidase활성이 대조구에 비해 8Gy조사구에서 가장 높았으며 본엽은 peroxidase 활성이 4Gy 조사구에서 확연히 증가하였다. 저선량 γ선을 조사한 박 식물체의 광 스트레스에 대한 반응효과는 광계Ⅱ의 광화학적 효율이 대조구와 8Gy의 경우 50%정도 감소되었으나 4Gy에서는 40%정도의 감소를 보였다. 반면 Fo는 광저해가 진행됨에 따라 약간의 증가를 보였으나 대조구나 저선량 조사구사이의 차이는 거의 없는 것으로 나타났다. 광계Ⅱ의 광양자 수율, φ_PSⅡ과 광계Ⅱ 반응중심의 흥분 포획능, 1/Fo-l/Fm 또한 광저해가 진행되는 동안 감소하여 φ_PSⅡ는 대조구와 8 Gy의 경우 20%정도 감소를 보인 반면 4Gy조사구는 15%의 감소를 보였고, 1/Fo-lF/m은 대조구와 8Gy는 55%,4 Gy는 45%의 감소를 나타냈다. 비광화학적 소멸인 NPQ는 대조구와 저선량 조사구 모두 70% 정도 감소되는 경향을 보였다. 이러한 결과를 볼 때 종자의 종피를 투과한 저선량의 γ선이 참박의 생육을 촉진시키고 4Gy에서 광 스트레스에 대한 저해가 감소되었다. Gourd seeds were irradiated with the doses of 0∼20 Gy to investigate the effect of the low dose ??-radiation on the early growth and physiological activity. The stimulating effects of the low dose ??-radiation on the early growth were not noticeably high, but were increased generally at 4∼16 Gy irradiation group. The catalase and peroxidase activity of cotyledon from seeds irradiated with ??-radiation were increased at 8 Gy irradiation group. The peroxidase activity of leaf was noticeably high at 4 Gy irradiation group. The photochemical yield of PSⅡ, estimated as Fv/Fm, decreased with increasing illumination time by 50% after 4hrs in the control and 8 Gy irradiation group, while Fo slightly increased. However, Fv/Fm in the 4 Gy irradiation group decreased by 40% of inhibition, indicating that photoinhibition decreased by the low dose ??-radiation. Changes in the effective quantum yield of PSⅡ, Φ_PSⅡ and 1/Fo-1/Fm, a measure of the rate constant of excitation trapping by the PSⅢ reaction center, showed similar pattern to Fv/Fm. NPQ decreased by 70% after photoinhibitory treatment with showing similar pattern between the control and the irradiation group. These results showed the positive effect of low dose ??-radiation on the seedling growth and the reduction of photoinhibition in the 4 Gy irradiation group.

Device Wafer의 종점 전후에 있어서 광역평탄화 특성에 관한 연구

정해도,김호윤 釜山大學校生産技術硏究所 1996 生産技術硏究所論文集 Vol.51 No.-

화학적 기계적 폴리싱(CMP)은 반도체 제조에서 다층구조의 평탄화에 널리 이용되고 있다. 그러나, 패턴의 형상·물질 차이, 여러 가지 가공 변수와 아직 확립되지 않은 실제 가공 모델링 등으로 인하여 완전한 평탄화를 얻기는 쉽지 않다. 본 논문에서는 에치 백 방법 대신 메탈(텅스텐) 폴리싱에 따르는 절연산화막의 평탄화를 실현하였다. CMP 가공동안의 패턴 형상 평가는 AFM을 사용하였다. AFM 평가는 다른 일반적인 평탄도 측정에 비해서 미소 측정에 상당히 효과적이었다. 더불어 평탄화 특성 분석과 CMP 모델링 확립에 크게 기여할 것이다. Chemical mechanical polishing (CMP) has become widely accepted for the planarization of multi-interconnect structures in semiconductor manufacturing. However, perfect planarization is not so easily achieved because it depends on the pattern sensitivity, the large number of controllable process parameters, and the absence of a reliable process model, etc. In this paper, we realized-the planarization of deposited oxide layers followed by metal (W) polishing as a replacement for tungsten etch-back process for via formation. Atomic force microscope (AFM) is used for the evaluation of pattern topography during CMP. As a result, AFM evaluation is very attractive compared to conventional methods for the measurement of planarity. Moreover, it will contribute to analyze planarization characteristics and establish CMP model.

XML을 이용한 웹 상의 멀티미디어 내용 기반 검색 시스템

林海喆,金宣炅,金連姬 弘益大學校 科學技術硏究所 2001 科學技術硏究論文集 Vol.12 No.-

Recently the increase of multimedia data on the web and the user's various requirements lead many multimedia retrieval systems to develop usefully. This paper shows new multimedia content-based retrieval system that manages database for images independently and can retrieve most similar image like query image chosen by user. The proposed system represents text information using XML and exchanges information among modules. So, this system supports retrieval through structure of XML document and integrates easily in heterogeneous environments.