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朱挺玉 大田大學校 1987 論文集 Vol.6 No.2
When Soviet Union emerged as the first country on earth in 1917, Its trade volume was only 89 million Roubles and there was no other country in the So-called Socialist bloc. Now the Socicalist is expanded by 16 nations; USSR, Red china, East Germany Czechoslovakia, Mongolia, North Korea, Vietnam, Laos, Cambodia and Cuba. The trade volume in 1985, approxinately amounted to $612,10 billion. Through there statistics we can see the potentiality of the Socialist nation to be a large trade market, though their economy is currently run under the Central planning systems. Accordingly, in an effort to be reference to diversify Overseas market, this dissertation is primarily going to concerned with the trade characteristics of Socialist Nations which has been known as taboo in our Society. So this Study put emphasis on reviewing the Soviet trade characteristics with State ownership, central planning.
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임형렬,이주성,정순기 한양대학교 에너지 ·환경기술연구소 1995 에너지·環境技術論文集 Vol.2 No.-
고체전해질형 연료전지의 작동온도를 낮추기 위해 고체전해질인 ??를 고상반응법으로 제조하여 그 전기화학적 특성을 살펴보았으며 소결온도 및 첨가제 함량이 이온전도도에 미치는 영향에 대해서도 고찰하였다. 1500℃에서 10시간동안 소결한 ??의 경우 Yb₂O₃의 함량이 ZrO₂에 대해 8㏖%일 때 가장 뛰어난 특성을 보여 890℃, 공기 중에서 ??의 이온전도도를 나타내었다. ?? were prepared by solid state reaction and its electrochemical characteristics were investigated to lower the operating temperature of solid oxide fuel cell. Also the effects of sintering temperature and additive content on ionic conductivity were studied. In case of ?? sintered at 1500℃ for 10hr, the best characteristics were showed when x is 0.08 and the value was ?? at 890℃ in air.
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Alendronate가 백서에서 두개골 결손의 재생에 미치는 영향
정찬두,김정근,정현주 전남대학교 치의학연구소 2001 구강과학 Vol.13 No.4
Previous studies have demonstrated an increase in bone mass and density with the use of bisphosphonate in osteoporosis. This agent acts as an inhibitor of osteoclastic activity, and results in increase of net osteoblastic activity. Currently, it has been reported that bisphosphonate has direct effect on osteoblast. This study was designed to evaluate the effect of alendronate on bone regeneration in defect of rat calvaria. The animals used for these experiments were 48 male rats, over 6-8 weeks old. They were divided into three groups according to the dose of alendronate(MK-217®, Merck, USA) administered. After the calvarial defects were surgically created, the rats received a peritoneal alendronate (0.25mg/kg) in group I, a peritoneal alendronate (1.25mg/kg) in group Ⅱ, and a peritoneal normal saline injection in the control group. Three and six weeks later, blood was sampled and evaluated for alkaline phosphatase activity. the animals were sacrificed for histological observation and histometric analysis of the level of bone formation. The alkaline phosphatase activity was similar in three groups at 3 weeks of experiment. The activity at 6 weeks increased more than twice, compared to 3 weeks, and was slightly higher in group Ⅰ than the other two groups. In histological observation, all the groups at 3 weeks, osteoblast rimming and new bone formation were observed along the defect margin. At 6 weeks, the defect was almost closed with new and more mature bone, but new bone is thinner than original bone in the central portion of defect. In histometric analysis, group Ⅰ and Ⅱ at 3 weeks showed significantly greater new bone formation than the control, and all the groups at 6 weeks showed similar amount of bone formation. These result suggest that alendronate administration in the dose of 0.25mg/kg and 1.25mg/kg promote osseous regeneration.
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김희연,홍진환,박혜경,한상배,박종석,이은주,이정성,송경희,최은희,최영준,소경아,성영제,이주엽 식품의약품안전청 2000 식품의약품안전청 연보 Vol.4 No.-
본 연구는 분말상 원료(전분, 대두분)의 저장유통시 품질변화를 건전성과 안전성 측면에서 검토하여 식품의 기준 ·규격 설정f.」 합지적으로 반영하고자 하였다. 전분과 패두분의 이물을 검사하고, 2종 대두분(중국산, 미국산)을 ?0일간 IS'c와 30t에 저장하면서 성상, 수분, 산가, 과산화물가, 지방산 조성,아플라톡신 BB의 생성여부를 분석하였다. 중국산 대두분 30'』 저장군에서 50일 이후 곰팡이가 발생한 것 이외에 모든 시료에서 양호한 성상을 나타내었고, 전분과 대두닥 모든 시료에서 이물은 검출되지 않았다. 산가는 중국산과 미국산 시료간에 편차를 보여 증국산 30"C, 50일 저장시료에서 약 10배끙도 증가하였고, 과산화물가는 저장 90일후 15'E 저장군은 약 2.3배, 30'c 저장군은 3배정도 증가하였다. 대두분의 주요 지방산은 linoleic acidf18. 2), oleic acid(18 : 1), palmitic acid(16 : 0)이었으며, 3개월 저장에 따른 지방산 함량의 변화는 미미하였다. 아플라톡신 B₁은 모든 시료에서 검출되지 않았다. The objective of this study was to investigate auality changes of type raw materials(starch, soy flour) during various storage conditions. Starchflour(source of China, U.S.A) were slfred under two temperature(15'C, 30'c) forSensory evaluation, (o.reign material test, moisture content, acid value, peroxide ualue,composition, aflatorin Bi were analyzed. China soy flour(stor·ed 30'f) was contaminated by fungj on 50 days. Except for soy flour contardnated by fungi, sensory characteristics were not changed and foreign mater;als were notdetected. Acid value of China soy flour(stored at 30'C, 90 days) was about 10 times higherlevel before storage and acid value was more influenced by source(China, USA). Peroxide valuewas in proportion with the storage period slightly. The major fatty acid of soy flour waslinoleic acid(18 . 2), an(3 the change of fatty acid composition was not observed. Aflatoxlrl Blwas not detected.
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RE-13 : Pregnancy rate according to hatching status of assisted hatching embryos
( Jeung Ju Eun ),( Ko Gyung Rae ),( Joo Jong Kil ),( Lee Kyu Sup ) 대한산부인과학회 2012 대한산부인과학회 학술대회 Vol.99 No.-
There is no consensus about the time interval between the assisted hatching procedure and embryo transfer (ET). When we performed ET, the embryos are in the expanding state or hatching state. There might be difference of pregnancy rate between these two embryo states although all embryos undergo assisted hatching procedure. In this article, we compared the pregnancy rate according to the hatching states of assisted hatching embryos in frozen-thawed cycles. After COS & ovum pick up procedure, all embryos were cultured to blastocyst stage and all blastocyst-stage embryos were frozen. During thawing process, we performed assisted hatching by ICSI pipettes. Before embryo transfer, we observed the embryo hatching state. If the embryo protuding from zona pellucida, we named it hatching embyos, but at the expanding state, we named it expanding embryos. Retrospectively, Group 1 includes only expanding blastocysts, group 2 consists with one expanding and one hatching blastocysts and group 3 was composed with only hatching states of blastocysts. Retrospectively, we analysed the clinical outcome between three groups. There were no differences in age, infertility cause, BMI, infertility durations, gonadotrophin level and male age between three groups. The chemical pregnancy rate was 45% in group 1, 62% in group 2 and 75% in group 3. The clinical pregnancy rate was 35% in group1, 48% in group 2 and 79% in group 3. The clinical outcome was better in group 3 but the statistical significance was not observed. Same assisted hatching procedure was applied to all the embryos, but some embryos were in expanding state, others in hatching state. We are not sure the factors affecting hatching process. But, maybe the oocyte or embryo quality is the main factor and the time interval from thawing to transfer could be one of factors. This hypothesis must be evaluated for better pregnancy rate. If this hypothesis is true, we have to wait until the embryo goes into the hatching process.
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정우정(Jeung, Jeung-Woo),나백주(Na, Bak-Ju),김철웅(Kim, Chul-Woung),이무식(Lee, Moo-Sik),김상하(Kim, Sang-Ha) 한국산학기술학회 2009 한국산학기술학회 학술대회 Vol.- No.-
본 연구는 임상적, 병리조직학적으로 유방암을 진단 받고 일개 대학병원의 2003년∼2008년 유방암 환자 440명 대상으로 통원 치료 받는 유방암 환자 382명을 대상으로 여성 유방암 발병전 규칙적 검진 요인을 찾고자 연구를 실시하였다. 즉 유방암 발병전 전문 검사기관에 규칙적인 검사 실시 여부와 요인을 연구하였다. 불충분한 설문지 58명을 제외하고 382명 최종선정 설문지를 연구 분석하였다. 본 연구의 유방암환자 발병전 관련요인에 대한 결과는 다음과 같다.
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백승주 ( Seung Ju Back ),박영옥 ( Young Ok Park ),김계정 ( Kae Jeung Kim ),김창덕 ( Chang Deok Kim ),서영준 ( Young Joon Seo ),이증훈 ( Jeung Hoon Lee ),박장규 ( Jang Kyu Park ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.5
Background: Hair constitutes an integral part of our self and our self-identity, which is why hair loss may cause a broad range of psychological problems related to our identity. However, the association between quality of life (QOL) in alopecia areata (AA) patients and their clinical characteristics has not yet been investigated in Korea. Objective: The purpose of this study is to compare the QOL in patients with AA and healthy controls by using Hairdex scale. The relationship between their QOL and their clinical characteristics will be investigated. Methods: 102 AA patients and 82 healthy controls were recruited in this study and compared by use of Hairdex. Correlation analysis was performed to examine the relationship between the QOL and the clinical characteristics of patients with AA. Results: The total Hairdex scores and all domain scores, except those of the symptomatic domain, of the Hairdex scales in AA were higher than those of the healthy controls. Clinical characteristics, including the age, disease duration, AA type, AA area, treatment satisfaction, treatment history, anxiety and depression, showed significant correlation with QOL. Of these characteristics, the depression and treatment satisfaction showed strong association with QOL. Conclusion: AA can a impair patient`s quality of life and has a significant psychological impact. (Korean J Dermatol 2008;46(5):578∼586)
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