산양 배 분할구의 체내배양에 관한 연구

최광수,박항균,서태광 경북대학교 유전공학연구소 1987 遺傳工學硏究所報 Vol.2 No.1

In order to obtain basic informations and to develop basic techniques for the production of monozygotic twins of Korean native goats, the study of superovulation, ova recovery, bisection of embryos and in vivo culture of separated blastomeres was carried out. For the study, 19 goats were treated with FSH to induce superovulation and, as a result, 16 goats were responded. Ova or embryos were recovered from the uterus by surgical method after 4.0-7.0 days from the first mating. The mean number of corpora lutea and recovered ova were 10.1±3.3 and 5.9±2.5, respectively. 53 morula were recovered after 5.0-6.0 days from the first mating. Of these recovered morula, 48 were bisected by glass needle or razor blade and 61 available demi-embryos were obtained among them. 61 available demi-embryos were cultured in vivo and after culture for 48 hours, low rate of the demi-embryos was recovered. However, some of the recovered demi-embryos were developed to blastocyst.

[ 0.1\;μm ] SOI-MOSFET의 적정 채널도핑농도에 관한 시뮬레이션 연구

최광수,Choe, Kwang-Su 한국재료학회 2008 한국재료학회지 Vol.18 No.5

In submicron MOSFET devices, maintaining the ratio between the channel length (L) and the channel depth (D) at 3 : 1 or larger is known to be critical in preventing deleterious short-channel effects. In this study, n-type SOI-MOSFETs with a channel length of $0.1\;{\mu}m$ and a Si film thickness (channel depth) of $0.033\;{\mu}m$ (L : D = 3 : 1) were virtually fabricated using a TSUPREM-4 process simulator. To form functioning transistors on the very thin Si film, a protective layer of $0.08\;{\mu}m$-thick surface oxide was deposited prior to the source/drain ion implantation so as to dampen the speed of the incoming As ions. The p-type boron doping concentration of the Si film, in which the device channel is formed, was used as the key variable in the process simulation. The finished devices were electrically tested with a Medici device simulator. The result showed that, for a given channel doping concentration of $1.9{\sim}2.5\;{\times}\;10^{18}\;cm^{-3}$, the threshold voltage was $0.5{\sim}0.7\;V$, and the subthreshold swing was $70{\sim}80\;mV/dec$. These value ranges are all fairly reasonable and should form a 'magic region' in which SOI-MOSFETs run optimally.

대두의 수침시간 (水浸時間)에 따른 조직의 미세구조 단백질특성 및 두부수율의 변화

최광수,박부덕,박용곤 한국콩연구회 1985 韓國콩硏究會誌 Vol.2 No.2

본 연구는 두부제조시 수침시간을 연장시킴에 따라 두부수율이 증가하는 원인을 규명하기 위하여 전자현미경 (TEM)을 이용하여 대두 조직의 미세구조와 초원심침강법에 의한 두유, 두부 단백질 fraction의 특성 및 이행을 조사한 것으로 그 결과는 다음과 같다. 1. 대두의 수침시간을 5, 10, 24시간으로 연장시킴에 따라 두부수율은 각각 45.93%, 50%, 55.4%로 증가하였고, 고형분추출율, 응고율 역시 증가하였다. 2. 두유, 두부의 disc-gel 전기 영동에서 수침시간을 연장시킴에 따라 band는 증가했고, 주 band의 두께는 더 굵었다. 그리고 두유의 고분자의 band가 두부로 많이 이행하였다. 3. 두유, 두부의 crude 7S protein과 crude 11S protein은 전기 영동에서 두유의 7S는 5개, 11S는 9개의 band가 나타났고, 두부의 7S는 4개, 11S는 8개의 band가 나타났는데 두유의 band 중 주로 11S 성분들이 두부로 많이 이행하였다. 4. 대두조직의 미세구조에 관한 연구에서 수침시간이 증가함에 따라 protein body는 그 크기가 상당히 팽창했고 protein body 사이에 산재해 있던 spherosomes의 수는 상대적으로 감소했다. This experiment was conducted to investigate changes of soybean curd yield according to the extension of soaking time during manufacturing of soybean curd. To investigate those changes systematically, transmission electron microscopy and disc-gel electrophoresis were used. The soybean curd yield was increased from 45.0% to 50.5% and 55.4% respectively as soaking time is extended from 5 hours to 10 and 24 hours. The solid extraction and soybean milk coagulation were also increased according to the extension of soaking time. From disc-gel electrophoresis patterns of soybean milk protein and soybean curd protein, numbers of band were increased and major band thickened by exending the soaking time. Most of high molecular bands of soybean milk protein were transfered to soybean curd. Crude 7S porteins of soybean milk and soybean curd in dis-gel electrophoresis were appeared to be 4 and 5 bands respectively, and crude 11S proteins of soybean milk and soybean curd were appeared to be 9 and 8 bands respectively. Of soybean milk bands, most of 11S component transfered to soybean curd. Transmission electron photomicrographs revealed that the dimension of each protein body became larger and the numbers of spherosome around the protein bodies in unit area fewer by extending the soaking time of soybean.

제주향토음식이미지가 관광객만족과 행동의도에 미치는 영향 -제주방문관광객 대상 설문조사분석을 중심으로-

최광수 제주학회 2019 濟州島硏究 Vol.52 No.-

본 연구는 제주향토음식 경험이 있는 제주를 방문한 관광객을 대상으로 제주향토음식이미지와 관광객만족 그리고 행동의도와 관련하여 영향관계를 파악하기 위한 연구이다. 연구결과 제주향토음식이미지는 청정이미지, 지역이미지, 전통이미지, 메뉴이미지, 거리이미지가 도출 되었다. 제주음식이미지가 제주관광지의 만족에 미치는 영향으로는 청정음식이미지(.331), 전통음식이미지(.137)가 영향을 미치는 것으로 나타났으며, 긍정적인 구전에는 청정음식이미지(.318), 지역음식이미지(.171)가 재방문에는 청정음식이미지(.283)가 추전에는 청정음식이미지(.282), 지역음식이미지(.259)가 각각 영향력을 미치는 것으로 나타났다. 따라서 제주향토음식이미지 중 관광객 만족과 행동의도에 미치는 영향은 청정음식이미지가 가장 큰 것으로 나타났으며, 청정음식이미지를 높이기 위해서는 제주향토음식점의 청결과 제주향토음식 메뉴의 현대화 그리고 종사원의 위생관련 교육의 지속적인 실시와 제주 식재료의 청정 이미지 등을 통하여 제주향토음식의 청정 이미지화를 높여야 할 것으로 사료되며, 제주에서 만이 먹을 수 있는 지역 브랜드 메뉴를 강조하여 메뉴 구성이 필요한 것으로 나타났다. The purpose of this study is to investigate the relationship between Jeju native food image, tourist satisfaction, and behavioral intention of tourists visiting Jeju with local food experience. As a result, the clean image, regional image, traditional image, menu image and street image of Jeju native food image were derived. The effect of Jeju food image on the satisfaction of Jeju tourist destination was influenced by clean food image (.331) and traditional food image (.137), and the positive word of mouth factor was influenced by the clean food image (.318) and local food image (.171), while the revisiting factor was influenced by clean food image (.283), and the recommendation factor was influenced by the clean food image(.282), and local food image(.259) respectively. Therefore, the clean food image was the most influential factor among Jeju native food images which affects the satisfaction and the behavioral intention of tourists. In order to improve the image of clean food, cleanliness of local restaurants in Jeju, modernization of local food menu in Jeju, clean image of Jeju food ingredients and hygiene education of employees of Jeju restaurants should be reinforced.

도로 폭이 좁은 굴착공사에서 연결부가 적용되는 장지간 주형의 수치해석적 거동 평가

최광수,하상봉,이환우 한국전산구조공학회 2020 한국전산구조공학회논문집 Vol.33 No.4

본 연구의 대상은 도로 폭이 좁은 시가지에서 굴착공사 시 적용되는 장지간 주형의 연결부이다. 일반적으로 적용되고 있는 연결부에서 상부 플랜지의 단차와 피로균열 등의 문제로 연결부의 신뢰도가 저하된다. 연결부의 결함을 보완하고 안전성을 향상시킨 개선형 연결부를 개발하였다. 유한요소 기반의 상용프로그램(ABAQUS)를 이용하여 개선형 연결부의 거동을 평가하였다. 먼저, 개선형연결부에 적용되는 고장력 볼트 연결 및 강재와 콘크리트의 합성거동을 구현하기 위한 수치해석 방법을 제안하였다. 비교논문의 실험결과와 수치해석 결과의 비교를 통하여 개선형 연결부를 해석하는데 있어 수치해석 방법의 적합성을 검증하였다. 본 연구에서 제안하는 수치해석 방법을 적용하여 개선형 연결부와 일반형 연결부가 적용된 장지간 주형을 해석하였다. 장지간 주형의 탄소성 거동과 연결부의 응력분포를 수치 해석적으로 비교분석하였다. 개선형 연결부의 도입으로 25%의 압축응력이 감소되며 구조적 성능 개선효과 및 안전성을 확인하였다. This study evaluates the structural behavior of connected long-span beams applied for excavation in urban areas with a narrow street. Generally, the reliability of the connection is reduced owing to the defect of the upper flange in the connection. An improved connection partwas developed to complement the defects in the connected long-span beam. A finite element analysis based on a commercial program,ABAQUS, was employed to evaluate the behavior of the improved connection part. A numerical analysis model was proposed to analyze thehigh-strength bolt connection and the composite behavior of steel and concrete applied to the improved connection. The suitability of theproposed numerical analysis was verified by comparing the experimental and numerical analysis results of the references. Using the proposednumerical analysis method, the improved and general connections were analyzed and compared with each other. The stress distribution andelastic-plastic behavior of the long-span beam were analyzed numerically. The analysis confirmed that 25% of the compressive stress wasimproved, resulting in the improvement of structural safety and performance.

膝關節疾患의 關節鏡的 觀察硏究

崔光秀 우석대학교 의과대학 1970 우석의대잡지 Vol.7 No.1

The endoscope has been widely used in various clinical fields, but the arthroscopy has been little known in the practical application except in Japan. The arthroscope was first designed by Takagi in 1920 and modified and steadily developed ever since for clinical application. By the arthroscopy the intraarticular tissues can be directly observed and biopsied for the histological diagnosis which will enable early diagnosis and therefore early treatment. There has been no report or experiences of arthroscopic study so far in Korean. Employing Model No. 21 arthroscope the author have made an observations on 35 knees including 9 cases of trauma and 26 cases of arthritic conditions. The summary of the findings as follows ; 1. In the diagnosis of suppurative arthritis, the clinical and bacteriological examinations are more decisive factors in diagnosis but arthroscopy is of great value in obtaining tissues for biopsy when bacterial culture is not conclusive. 2. When the tuberculous tubercles of the synovial membranes are clearly shown endoscopically, this modality is an excellent diagnostic tool in cases of tuberculous artritis. 3. Arthroscopically rheumatoid arthritis and nonspecific synovitis are manifested by proliferation and adematous change of villi, fibrin net work and thickened synovial membrane but it is difficult to differentiate these changes from the findings seen in other diseases. The arthroscopy howevere played an important role in the diagnosis of these joint conditions by means of biopsy. 4. In the cases of tearing of cruciate ligaments and meniscus injury, the appearance and extent of the injury are cleary demonstrated by arthroscopy and therefore this method is an invaluable one in the diagnosis of traumatic derangement of the joint. 5. Judging from the results obtained, the author feels that the arthroscope is a good tool not only for clinical diagnosis but of the study on miscellaneous disorders of the knee joints although the arthroscope has a few difficulties in operation and interpretation of the findings.

액막법을 이용한 IGF-I 회수

최광수,문용일 한국동물생명공학회(구 한국동물번식학회) 1998 Reproductive & developmental biology Vol.22 No.1

외인성 성장호르몬이 한우의 성장 및 유방의 발달에 미치는 영향

최광수,신원집,최호성 한국동물생명공학회(구 한국동물번식학회) 1998 Reproductive & developmental biology Vol.22 No.1

中毒의 개념에 대한 聖經的관점에 대한 考察

최광수 한국인간복지실천학회 2020 한국인간복지실천연구 Vol.24 No.-

본 연구는 중독의 개념을 성경적 관점으로 고찰한 것이다. 이를 위해 먼저 일반적인 중독의 개념들을 살펴보았다. 중독의 일반적 개념 가운데 그 핵심은 ‘집착’이었다. 그리고 중독은 자기 통제력이 상실되는 것이다. 중독의 특성들을 통해 중독의 의미들을 살펴볼 때, 중독은 그 특성인 내성으로 인해 중독의 대상을 더 많이 더 자주 요구하게 된다는 사실과 중독은 인간으로 하여금 금단 증상으로 인하여 벗어나지 못하게 만든다는 것이다. 뿐만아니라 중독은 기만 전술을 통하여 중독자로 하여금 스스로 속아 넘어지도록 하고, 인간을 무기력한 존재로 전락시켜 하나님의 형상을 회복하지 못하도록 한다. 그리고 중독은 인간의 핵심 초점인 하나님에게서 벗어나 중독의 대상이 그 초점이 되게 한다. 중독의 개념을 더 분명하게 하기 위해서는 인간 존재에 대한 이해가 필수적이다. 이를 위해 신학적 검토를 거쳐 인간의 존재에 대한 본질적 이해를 샬펴보았고, 모든 인간은 본능적으로 인간 내면에 ‘종교의 씨앗’을 가지고 있기 때문에 하나님에 대한 갈망을 갖고 있다는 것을 고찰하였다. 결국 인간은 최고선(summum bonum)이신 하나님을 통해서만 만족을 얻을 수 있다. 그리고 인간은 하나님의 형상으로 피조된 존재이기에 인격체로 서 자기 주체적 결정을 내리는 존재이다. 즉 인간은 ‘자유 결정’을 할 수 있는 존재이다. 마지막으로 성경적 관점에서 볼 때 중독은 죄의 결과이다. 중독의 대상은 창조주 하나님 대신에 찾은 우상이다. 중독은 하나님을 대신하여 헛된 것에 집착하는 것이다. 그리고 중독은 ‘자유 결정’의 능력을 상실하게 만든다. 그로 인하여 중독 대상의 노예가 되게 만든다. 결국 인간은 중독 과정을 통해서 우상 숭배자가 된다. 그러므로 본 연구는 중독이 죄가 있는 모든 사람에게 적용되는 개념이라는 것을 주장하였다. This study examines the concept of addiction from a biblical perspective. To do this, we first looked at the general concepts of addiction. The core of the general concept of addiction was 'obsession'. Also, addiction is a loss of self-control. I studied the concept of addiction through the characteristics of addiction. Because of the tolerance, one of the natures of addiction, they want more frequently stronger stimulus. In addition, the withdrawal symptoms make it impossible to escape. The addiction causes the addict to be fooled by himself through deception tactics. In addition, addiction prevents humans from restoring God's image and turns them into helpless beings. And addiction makes human beings concentrate on the object of addiction not on the God, the core of hunam existence. The concept of addiction will be clearer when we have a clear understanding of human existence. To this end, through theological examination, an essential understanding of human existence was promoted. All human beings instinctively have a longing for God because they have the seed of religion inside. Man can only be satisfied “ ” through God, ‘The highest Good’. And human beings are created in the image of God. Therefore, human beings can make self-subjective decisions by nature. In other words, human beings can make 'free choice'. From a biblical perspective, addiction is the result of sin. The object of addiction is an idol in place of God the Creator. Addiction is Attachment to the vain things instead of God. And addiction leads to the loss of the ability to "free choice". This makes them slaves to addiction. Therefore, this study argued that addiction is a concept that applies to all sinner before God.

전과정평가에 있어 확률론적 건강영향분석기법 적용 : Part 2:화학제품의 환경부하 전과정평가에 있어 건강영향분석 모의사례연구 Life Cycle Assessment for Environmental Load of Chemical Products using Probabilistic Health Risk Analysis : A Case Study

최광수,박재성 한국환경영향평가학회 2000 환경영향평가 Vol.9 No.3

Health risk assessment is applied to streamlining LCA(Life Cycle Assessment) using Monte carlo simulation for probabilistic/stochastic exposure and risk distribution analysis caused by data variability and uncertainty. A case study was carried out to find benefits of this application. BTC(Benzene, Trichloroethylene, Carbon tetrachloride mixture alias) personal exposure cases were assumed as production worker(in workplace), manager(in office) and business man(outdoor). These cases were different from occupational retention time and exposure concentration for BTC consumption pattern. The result of cancer risk in these 3 scenario cases were estimated as 1.72E-4 ± 1.2E ± 0(production worker; case A), 9.62E-5 ± 1.44E-5(manger; case B), 6.90E-5 ± 1.16E+0(business man; case C), respectively. Portions of over acceptable risk 1.00E-4(assumed standard) were 99.85%, 38.89% and 0.61%, respectively. Estimated BTC risk was log-normal pattern, but some of distributions did not have any formal patterns. Except first impact factor(BTC emission quantity), sensitivity analysis showed that main effective factor was retention time in their occupational exposure sites. This case study is a good example to cover that LCA with probabilistic risk analysis tool can supply various significant information such as statistical distribution including personal/environmental exposure level, daily time activity pattern and individual susceptibility. Further research is needed for investigating real data of these input variables and personal exposure concentration and application of this study methodology.