흰쥐에서 갑상샘 절제 후 재생에 따른 세포 및 세포사이물질의 변화

황영일,정용환,이왕재,황덕호,유영복,김혜숙,장가용 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.4

Seismic stratigraphic reconstruction of Plio-Quaternary depositional sequences on the continental shelf of Korea Strait

Yoo, Dong-Geun,Kim, Kyoung-Jin,Lee, Gwang-Soo,Kang, Nyeon-Keon,Yi, Bo-Yeon,Kim, Gil-Young,Chang, Se-Won,Kim, Han-Joon Elsevier 2017 Quaternary international Vol.459 No.-

<P><B>Abstract</B></P> <P>The Korea Strait is a seaway connecting the East Sea with the East China Sea. The Plio-Quaternary stratigraphy and sedimentation on the Korea Strait shelf was studied using a dense network of high-resolution, single-channel seismic reflection profiles. The shelf sequences above the acoustic basement consist of seven depositional sequences separated by erosional unconformities corresponding to falls in sea level. Individual sequences are characterized by well-stratified and complex sigmoid-oblique prograding reflection configurations, reflecting a history of upbuilding and outbuilding in response to repetitive transgressive and regressive events driven by sea level changes. During the regression to lowstand of sea level, lowstand prograding wedges were formed seaward along the present shelf margin, whereas during the highstand of sea level, as in the present condition, highstand deposits were deposited in the inner shelf along the coast. However, as the subsequent regression began, the inner-shelf highstand deposits were severely eroded out and/or formed a condensed section. Volumetrically, the forced regressive and lowstand systems tracts are the most important components of the Korea Strait. Consequently, the Plio-Quaternary sequence in this area consists of a succession of stacked progradational lowstand wedges, mainly formed during the regression and lowstand of sea level.</P>

한국·미국·스페인 청소년의 태권도 수련이 인성교육에 미치는 영향

유창재,양정옥,이중숙,이상돈,김영수,조만태 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

The purpose of this study was to analyzed what effect Taekwondo training has upon Juvenile trainees in Korea, America, and Spain. to see if there is a significant difference in their Human nature Education. The subject of this study was set up as 547 Juvenile trainees who are including 183 Koreans, 185 Americans and 179 Spanish people belonging to gymnasia in their own countries, and sampling by purpose sampling. The means in this study is used to amend and complemented after confirming suitability of the contents in the questionnaire that is made on the basis of questionnaire Lee Chul Ho(1996). it is used as study means after modified, whether the substance of question is right in fitness and applicability or not, Reliability of the question, the range of Cronbach's a is showed from .7924 to .8450. The method of statistically analysis adapted one-way ANOVA, two-way ANOVA by using SPSS WIN 10.0 Program. The result of this study are as followed : First, it can be seen that American Juvenile and Spanish Juvenile show more significant change than Korean Juvenile in their Human nature Education by the Taekwondo training according to their nationality. Second, it can be seen that Juvenile who have had the Taekwondo training for more than from three to five year show more significant change in their emotion, sociability and attitude towards life than those who have had the same training for more than other period in their Human nature Education according to their Taekwondo training period. Third, as a result of analytic investigation of what effect the same training has upon the change factors in their Human nature Education in accordance with their training period and nationality, it can be seen that the training itself and nationality has the greater influence on them than the training period. Therefore, judging from the above findings, it can be proved that the Taekwondo training has much more significant and positive effect on Juvenile in their change of emotion, sociability and attitude towards life.

지상파 방송광고 단가변동의 경제적 파급효과

유승훈,양창영 한국방송광고공사 2007 광고연구 Vol.0 No.75

본 논문에서는 지상파 방송광고 단가변동의 경제적 파급효과를 분석하고자 한다. 이를 위해 경제적 파급효과를 지상파 방송광고 단가가 광고수요에 미치는 영향, 광고주 상품가격에 미치는 영향, 전반적 물가수준에 미치는 영향의 3가지로 세분화하여 분석하였다. 주요 분석방법 및 결과는 다음과 같다. 첫째, 지상파 방송광고에 대한 수요함수를 추정하여 지상파 방송광고 단가가 지상파 광고수요에 미치는 영향을 분석하였다. 지상파 방송광고 단가가 1% 상승하면 지상파 방송광고 수요는 0.583% 감소하여, 지상파 방송광고 수요는 가격변화에 대해 비탄력적인 것으로 분석되었다. 둘째, 100대 광고주의 재무구조를 살펴봄으로써 지상파 방송광고 단가가 광고주 상품가격에 미치는 영향을 살펴보았다. 지상파 방송광고 단가가 1% 상승하면 100대 방송광고주 상품가격은 최대 0.00405% 상승할 수 있음을 발견하였다. 셋째, 생산자 가격지수를 활용하여 지상파 방송광고 단가가 전반적 물가수준에 미치는 영향을 검토하였다. 지상파 방송광고 단가의 1% 상승은 전반적 물가수준을 0.0077% 만큼 상승시킴을 알 수 있었다. 따라서 지상파 방송광고 단가의 변동이 방송광고 수요, 100대 광고주 상품가격, 전반적 물가수준에 미치는 영향은 그리 크지 않음을 알 수 있었다. 이러한 정량적인 정보들은 지상파 방송광고 단가를 조정하는 데 중요한 참고자료로 활용될 수 있다. This paper attempts to analyze the economic impacts of a change in terrestrial broadcast advertising rates. To this end, we classify the economic impacts of terrestrial broadcast advertising rate into the impact on advertising demand, the impact on commodity price of a sponsor, and impact on overall price level, and investigate them. Methodologies employed and results obtained in this study as follows. First, the demand function for terrestrial broadcast advertising is estimated and the impacts of a change in terrestrial broadcast advertising rate on the demand are examined. It is concluded that an increase by 1.0% in terrestrial broadcast advertising rate decreases the demand by 0.583%. Thus, the demand is price-inelastic. Second, the financial structures of the 100 major sponsors are reviewed and the impacts of a change in terrestrial broadcast advertising rate on their commodity price are looked into. It is found that an increase by 1.0% in terrestrial broadcast advertising rate produces an increase by 0.00405% in their commodity price. Third, we use producer price index and obtain the information on the impact of terrestrial broadcast advertising rate on overall price level. It is observed that an increase by 1.0% in terrestrial broadcast advertising rate cause an increase by 0.0077% in overall price level. Consequently, we can guess that the impacts of terrestrial broadcast advertising rate on the demand, sponsor’s commodity price level, and overall price level are not big. These quantitative information can be usefully utilized in manipulating terrestrial broadcast advertising rate.

The Korean Academy of Tuberculosis and Respiratory Diseases : Slide Session ; OS-053 : COPD ; Factors Associated with Smokers` will for Smoking Cessation in Korea

( Ah Young Leem ),( Chang Hoon Han ),( Chul Min Ahn ),( Tae Hoon Jung ),( Yu Il Kim ),( Jae Yeol Kim ),( Sang Haak Lee ),( Eun Mi Chun ),( Kwang Ha Yoo ),( Ji Ye Jung ),( Korean Smoking Cessation Stud 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Smoking is known to increase the risk of chronic disease. Understanding of factors that contribute to smoking cessation may help to develop strategies for smoking behavior change. Methods: Pooled cross-sectional data of 11,924 subjects from the Korea National Health and Nutrition Examination Survey II-V were analyzed. The stages of change in smoking cessation were categorized into pre-contemplation, contemplation, and preparation. Baseline characteristics, socioeconomic factors, quality of life, psychological characteristics, and tobacco-related factors were compared between the groups. Results: The study population consisted of 32.4% in pre-contemplation, 54.4% incontemplation, and 13.1% in preparation group. While the proportion for pre-contemplation group (37.4% to 28.4%) tended to decrease from 2001 to 2012, that of preparation group (6.4% to 18.1%) tended to increase. The mean age of pre-contemplation group (48.4±16.2) is higher than comtemplation and preparation group (42.2±13.9 and 44.4±15.3; P=0.02). As levels of education and income status increased, the proportion of pre-contemplation tended to decrease, and that of preparation tended to increase. Proportion of blue collar job in pre-contemplation group was higher than in preparation group (67.9% vs 58.1%; P<0.001). In pre-contemplation group, percentage of suicidal ideation within 1 year was higher than contemplation and preparation group19.3% vs 16.0% and 16.1%). Upon adjusting analysis, the proportion of pre-contemplation group increased with increasing age (OR=1.01; 95%CI 1.01-1.02), and smoking amount (OR=1.04; 95%CI 1.03-1.05). People of pre-contemplation group (vs. preparation) are be less educated (OR=1.99; 95% CI 1.51-2.62), are in single marital status (OR=1.25; 95%CI 1.04-1.50), have lower prevalence of cardiovascular disease OR=0.48; 95%CI 0.31-0.76), and do less exercise walking (OR=1.36; 95%CI 1.09-1.69)and weight training (OR=1.59; 95%CI 1.35-1.85). Conclusions: We demonstrated a signifi cant association between the stages of changesmoking cessation and age, education, marital status, cardiovascular disease, and amount of exercise.

흉부 X선촬영 기술의 변천에 관한 연구

이창엽,조평곤,김지닐,최소영,김창균,최종학,김정민,김유현 高麗大學校 倂設 保健大學 保健科學硏究所 2002 保健科學論集 Vol.28 No.2

To find elements which enable improving Quality of image of chest radiography, we attempted to make comparison between chest radiography used currently with that of the past, and following conclusion was reached: 1) It could be confirmed that a dependance on chest radiography was declining, because proportion of chest radiography against overall radiography decreased. 2) There was a change of kVp to a high voltage in a chest radiography, and use of high kVp became a generalization 3) Exposure time was reduced and exposure dose was curtailed accordingly. 4) Apparatus was mainly comprised of 3-phase rectifier circuit and inverter type. 5) It could be confirmed that frequency of applying additional filters for high kVp radiography was insufficient. 6) There was almost no difference in the condition of exposure between hospitals using film/screen and hospitals using CR. But when CR is used for radiography, it was increase in exposure dose due to increase in tube current and it will be necessary to have continuous study on exposure dose by an increase use of CR in the future.

축소형 틸트로터 무인기의 안전줄 호버 시험

강영신 ( Young Shin Kang ),박범진 ( Bum Jin Park ),유창선 ( Chang Sun Yoo ),장성호 ( Sung Ho Chang ),최성욱 ( Seong Wook Choi ),구삼옥 ( Sam Ok Koo ) 한국항공운항학회 2007 한국항공운항학회지 Vol.15 No.4

Tilt rotor aircraft can take off and land vertically and cruise faster than any other helicopter. A scaled flight demonstration model of a tilt rotor aircraft has been developed by KARI. Because the flight characteristics of tilt rotor are not well known, the developed scaled model would be helpful to evaluate flight control algorithm of a full scale aircraft. The tethered hover test has been performed in order to improve hover flight characteristics of tilt rotor aircraft prior to flight test of the small scaled model. During the tethered hover test, the performance of rotor speed governor, rate SAS (Stability Augmentation System) and control surface mixers have been evaluated. We expect that the results of real flight hover test would be quite same as tethered hover test. Therefore the tethered hover test results will reduce the risk of flight test properly by fixing some of hidden problems which might occur during the flight test. This paper presents the results of tethered hover test in detail and shows how it could be final ground test before flight test. The control mixer gain and rate SAS feedback gains were modified in order to get higher controllability and stability during the tethered hover flight. The rotor governor showed that it could keep rotor RPM constant with very small deviation even during severe pilot collective input change. The tethered hover test results gave pilot and engineers confirmation and experience about the scheduled flight test.

임플란트의 collar design이 변연골과 연조직에 미치는 영향

유현상,강선녀,정창모,윤미정,허중보,전영찬 대한치과보철학회 2012 대한치과보철학회지 Vol.50 No.1

연구 목적: 임플란트 경부가 잘 설계된 경우 양호한 연조직 반응을 통해 변연골을 보존하는데 도움이 된다. 본 실험에서는 연, 경조직 경계부에 가장 가까이 위치하는 임플란트의 collar design이 변연골 변화와 연조직 반응에 미치는 영향을 동물실험을 통해 알아보고자 하였다. 연구 재료 및 방법: 2마리의 건강한 Beagle dog에 임플란트 collar design만 다른 두 종류의 임플란트(Neobiotech Co. Seoul, Korea)를 식립하였다. Collar에 bevel 을 부여한 군(Bevel 군)과 "S"자 형태를 부여한 군(Bioseal 군)으로 나누어 마리 당 7개, 군당 7개, 총 14개의 임플란트를 무작위로 식립한 후 Healing abutment를 즉시 체결하였다. 디지털 표준구내 방사선사진을 이용해 4주 간격으로 총 12주간 근원심 변연골 변화를 관찰하였고, 12주에 희생하여 조직학적 분석을 통해 협설 변연골 흡수 및 임플란트 주변 연조직 반응을 평가하였다. Mann-Whitney test를 통해 동일한 방사선 사진 촬영 시점에서 근원심 변연골 변화량 및 조직계측치를 군 간 비교하였고, Kruskal-Wallis test를 통해 방사선 사진상 근원심 변연골 변화량이 시간에 따른 차이가 있는지 군 내 분석 한 후 Duncan test를 통해 사후 검증하였다(α=.05). 결과: 방사선학적 분석 결과 각 촬영 시점에서 두 군간 근원심 변연골 변화량의 차이를 보이지 않았다(P>.05). 군 내에서 시간에 따른 근원심 변연골의 흡수량을 분석한 결과 Bevel 군에서는 시간에 따른 차이를 보이지 않았으나 (P>.05), Bioseal 군에서는 시간에 따른 차이를 보였으며, 4주및8주와 비교했을 때 12주에서 변연골의 증가를 보였다(P<.05). 조직학적 분석 결과 협설측 변연골 흡수량에서 두 군간 차이를 보이지 않았으나 (P>.05), Bevel 군에 비해 Bioseal 군에서 더 견고한 결합조직부착을 관찰할 수 있었으며, 생물학적 폭경의 값은 두 집단 간 차이를 보이지 않은 반면에 (P>.05), 접합상피부착은 Bevel 군에서 유의하게 길었고, 결합조직부착은 Bioseal 군에서 더 길게 나타났다(P<.05). 결론: Bevel 군에 비해 Bioseal 군에서 결합조직부착은 길게 형성된 반면에 접합상피부착은 더 짧게 나타났으며, 생물학적 폭경과 초기 변연골 흡수에는 차이가 없음을 알 수 있었다. 연조직 반응의 차이가 실제 기능하중 하에서 변연골 변화에 미치는 영향에 대해서 향후 연구가 필요할 것으로 생각된다. PURPOSE. The purpose of this study was to investigate the effects of implant collar design on marginal bone change and soft tissue response by an animal test. MATERIALS AND METHODS. Two types of Implant (Neobiotech Co. Seoul, Korea) that only differs in collar design were planted on two healthy Beagle dogs. The implants were divided into two groups, the first group with a beveled collar (Bevel Group) and the second group with "S" shaped collar (Bioseal group). Standardized intraoral radiographs were used to investigate the mesio-distal change of the marginal bone. Histological analysis was done to evaluate the bucco-lingual marginal bone resorption and the soft tissue response adjacent to the implant. Mann-Whitney test was done to compare the mesio-distal marginal bone change at equivalent time for taking the radiographs and the tissue measurements between the groups. RESULTS. Radiographic and histological analysis showed that there was no difference in marginal bone change between the two groups (P>.05). Histological analysis showed Bioseal group had more rigid connective tissue attachment than the Bevel group. There was no difference in biological width (P>.05). Bevel group showed significantly longer junctional epithelium attachment and Bioseal group showed longer connective tissue attachment (P<.05). CONCLUSION. For three months there were no differences in marginal bone change between the Bevel group and the Bioseal group. As for the soft tissue adjacent to the implant, Bioseal group showed longer connective tissue attachment while showing shorter junctional epithelium attachment. There were no differences in biologic width.

Quality change during preservation of cultivation mushrooms, Flammulina velutipes and Agaricus bisporus

Jin-A Oh,Jong-Chun Cheong,Chan-Jung Lee,Chang-Sung Jhune,Young-Bok Yoo 한국버섯학회 2010 한국버섯학회지 Vol.8 No.4

The standard does much to improve merchantable quality, distribution efficiency and fair dealings by shipping of the standard agricultural products. Mushrooms notified as the standard are five items; Pleurotus ostreatus, Pleurotus eryngii, Flammulina velutipes, Agaricus bisporus and Ganoderma lucidum. But many farmers are suffering from a strict standards. So these standard is required modification to fit farmhouse situations. This study was carried out to investigate mushroom quality of farm shipping and quality change during preservation at various treatment. Flammulina velutipes and Agaricus bisporus preserved at different temperature( 4℃, 10℃, 20℃) to investigate quality changes. Pileus diameters of Flammulina velutipes was 67% of first grade and 33% of second grade at the early stage. After two weeks, pileus diameters was not signigicant changes; 50% of first grade, 50% of second grade at 4℃ and 50% of second grade, 50% of third grade at 10℃. Although there were no significant changes of diameter at 20℃, most of the fruit bodies were decayed. In case of Agaricus bisporus, pileus diameter was 15% of first grade, 81% of second grade and 4% of third grade at the early stage. The more storage period longed, the more the color of the fruit body was browned. But pileus diameters was not signigicant changes. Hardness and chromaticity of these mushroom was declined as time passed. Now we are carrying out more research on some mushroom’s standards for improve consumer confidence.

Free Paper Presentation : OS-53 ; Factors Associated with Smokers` will for Smoking Cessation in Korea

( Ah Young Leem ),( Chang Hoon Han ),( Chul Min Ahn ),( Tae Hoon Jung ),( Yu Il Kim ),( Jae Yeol Kim ),( Sang Haak Lee ),( Eun Mi Chun ),( Kwang Ha Yoo ),( Ji Ye Jung ) 대한결핵 및 호흡기학회 2014 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.118 No.-

Background: Smoking is known to increase the risk of chronic disease. Understanding of factors that contribute to smoking cessation may help to develop strategies for smoking behavior change. Methods: Pooled cross-sectional data of 11,924 subjects from the Korea National Health and Nutrition Examination Survey II-V were analyzed. The stages of change in smoking cessation were categorized into pre-contemplation, contemplation, and preparation. Baseline characteristics, socioeconomic factors, quality of life, psychological characteristics, and tobacco-related factors were compared between the groups. Results: The study population consisted of 32.4% in pre-contemplation, 54.4% in contemplation, and 13.1% in preparation group. While the proportion for pre-contemplation group (37.4% to 28.4%) tended to decrease from 2001 to 2012, that of preparation group (6.4% to 18.1%) tended to increase. The mean age of pre-contemplation group (48.4±16.2) is higher than comtemplation and preparation group (42.2±13.9 and 44.4±15.3; P=0.02). As levels of education and income status increased, the proportion of pre-contemplation tended to decrease, and that of preparation tended to increase. Proportion of blue collar job in pre-contemplation group was higher than in preparation group (67.9% vs 58.1%; P<0.001). In pre-contemplation group, percentage of suicidal ideation within 1 year was higher than contemplation and preparation group (19.3% vs 16.0% and 16.1%). Upon adjusting analysis, the proportion of pre-contemplation group increased with increasing age (OR=1.01; 95%CI 1.01-1.02), and smoking amount (OR=1.04; 95%CI 1.03-1.05). People of pre-contemplation group (vs. preparation) are be less educated (OR=1.99; 95% CI 1.51-2.62), are in single marital status (OR=1.25; 95%CI 1.04-1.50), have lower prevalence of cardiovascular disease (OR=0.48; 95%CI 0.31-0.76), and do less exercise walking (OR=1.36; 95%CI 1.09-1.69) and weight training (OR=1.59; 95%CI 1.35-1.85). Conclusions: We demonstrated a significant association between the stages of change in smoking cessation and age, education, marital status, cardiovascular disease, and amount of exercise.