• Maxillofacial Plastic and Reconstructive Surgery
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• 제32권5호
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• pp.431-436
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• 2010

Purpose: It is estimated that the odontogenic keratocyst (OKC) makes up 10% to 12% of all developmen-tal odontogenic cysts. The lesion has been of particular interest because of its specific histopathologic fea-ture, high recurrence rate, and aggressive behavior. Materials and Methods: We investigated 266 OKCs of Korean patients for the sex of patient, the age of the patient, the location of OKC, the recurrence rate related to radiographic impression. Results: The male-to-female ratio was 1.47:1, showing a slight male predilection. Odontogenic keratocysts had a peak of occurrence in the third decade of life. The mandibular angle and ascending ramus area (49.6%) is the most frequent site of OKCs in the jaws. Fourteen cases of unilocular (12%) and 5 cases of multilocular (20%) OKCs recurred. Thirteen cases of smooth (12.9%) and 6 cases of lobulated (14.6%) OKCs recurred. Seventeen cases of OKCs without perforation of cortical bone (12.5%) and 2 cases of OKCs with perforation of cortical bone (33.3%) recurred. Fifteen people of patients with single lesion (12.2%) and 4 people of patients with multiple lesions (66.7%) recurred. Conclusion: In this resul, we consider multiple odontogenic keratocysts can recur more easily. So we have to treat them more carefully and need long-time follow-ups.

• 한국식품위생안전성학회지
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• 제21권1호
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• pp.14-22
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• 2006

국내와 Codex에서의 식품첨가물 사용기준패턴 및 식품분류방법에 따른 차이 때문에 양자간의 첨가물 사용기준을 비교하는 데 많은 어려움이 예상되었다. 따라서 본 연구에서는 benzoic acid, food red No. 2, sulfur dioxide, polysorbate 60에 대해 첨가물별 사용기준 대조표와 된장, 고추장, 라면에 대해 식품별 사용기준 대조표를 작성하였다. 첨가물별 사용기준 대조표의 작성에서는 식품분류방법에서의 차이 때문에, 그리고 식품별 사용기준 대조표에서는 국내 첨가물 사용기준 설정 패턴의 혼용 때문에 많은 문제점과 어려움이 있었다. 본 연구에서 제시한 사용기준대조표는 규제당국 및 식품산업계에서 긴요하게 활용될 수 있을 것이며 사용기준의 국가간, 식품간 비교시 세심한 주의가 요구된다는 점을 보여주었다.

• 한국식품위생안전성학회지
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• 제21권1호
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• pp.1-8
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• 2006

본 연구는 식품첨가물공전, 식품공전 및 Codex 에서의 첨가물관리현황을 비교 분석하여 첨가물공전 체계의 개선방향을 제시함으로서 국제적으로 조화가능한 과학적 및 체계적 기준 규격을 수립할 수 있도록 하기위해 착수되었다. 그 결과를 요약하면 국내에서의 식품의 분류 및 명칭을 Codex 식품분류체계와 비교, 검토한 후 우리나라 전통식품의 첨가물 사용과 관련하여 Codex 식품분류에 포함될 수 있도록 모색하였다. 식품공전에 있는 식품들을 검색한 결과 한과류, 엿류, 두부류와 묵류, 식용유지류, 다류, 조미식품, 김치전임식품, 인삼 및 홍삼제품의 8개 식품군에 속하는 식품들의 분류, 정의, 명칭, 첨가물 사용여부를 감안하여 Codex 기준과 조화시키기 위한 개별적인 개선방안을 제시하였다.

• 대한한의학회지
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• 제16권1호통권29호
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• pp.141-159
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• 1995

The causes and treatment of alopecia are concluded based on the records found successive oriental medicine in order to persuade new treatments for alopecia as following : 1. In the context of modern medical science male-dominated alopecia was referred as dok-rak(禿落), cho-dok(早禿), chon-dok(全禿), pal-ju-tal-bal, chu-bal-sun and pal-sun(髮癬) alternatively, while alopecia areata was refereed as yu-pung(油風), pan-dok(斑禿), kwi-ji-du and kwi-che-du(鬼剃頭). 2. The causes of alopecia is related with condition of Gi(vital energy) and Hyul(blood) in the twelve channels, such as weakening of vital energy in the conduits, condition of internal organs as heat in the lung, weak kidney or liver vitality, and eating habits such as severe ingestion of bitter taste or sweet taste food. Other distinct reasons are penetration of wind and dryness into a head due to weakening Gi and Hyul inside human body, flaring up of the asthenic fire due to excessive eatings, hard labour or psychological sufferings deficiency of blood, deficiency of vital essence of kidney, phlegm caused by dampness and heat, and stagnated blood. 3. According to demonstration of alopecia, the causes of alopecia areata are listed as internal wind due to heat of blood, deficiency of liver and kidney, blookage of channels and collaterals by stagnated blood, and causes of male-dominated alopecia are listed as wind dryness caused by heat of blood, dampness and heat, and heat, wind and dryness due to deficiency of blood.

• 복식
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• 제35권
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• pp.343-366
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• 1997

Most of the recently-exhumed excavat-ed costume is the garment for the dead which is one of the costume of funeral rite Investigating the birth and death years of the dead reveals that the excavated cos-tume was mostly used in the 16th and 17th centuries, . The study on the change of clothes in-cludes two aspects; one is manifestication of the structure of clothes and the other is elucidation of the constructure of clothes through examining constructure compo-nents and constructure compo-nents and construction method. This study investigates the costume of the midddle years of the Chosun dynasty in these aspects by examining the excavated Costume of 16th and 17th centries and Ryesu. This study also aims to assist to comprehend the constructure of costume by comparing actual excavated clothes with chronological standards through in-specting diverse clothes in a specified pe-riod. The construction of the clothes of the middle years of the Chosun dynasty is different depending on the purpose of theclothes and the principle of sewing is set up on the bases of mentality and body That is the Costume stands for the individual social and men-tal world of the people at that time since the external construction of the clothes represents their social rank and the inter-nal construction of sewing symbolizes their mentality. The characteristics features of the clothes of the middle years of the Chosun dy-nasty coexistence of diverse sorts and patterns indicates a change in clothes. This suggests that the clothes of a partic-ular class last and change in role corre-sponding to formation lasting and extinc-tion of the class. Thus diversityof the sort of general costume advancement of pattern and the change of clothes de-pending on the change of the class signify that the middle years of the Chosun- dy nasty is a period in which the general costume is actively developed and a turn-ing point for transforming the traditional clothes into new ones, . In other words the middle years of the Chosun dynasty is characterized as an era during which a castume native to Korea is formed with respect to the structure and constructure of clothes.

• Journal of Preventive Medicine and Public Health
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• 제5권1호
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• pp.105-110
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• 1972

On 6 healthy adult males aged 20-30 years, oxygen pulse was observed during carrying sand bags weighing 10, 20 and 30 kg on a level treadmill running with speeds of 3, 4 and 5 km/hr. The results obtained were as follows. 1. Oxygen pulse during load carrying on a level treadmill was proportionately increased with an increase of work load, average oxygen uptake per minute. Regression equation of oxygen pulse (y: $m\iota$/beat) on the average oxygen uptake (x:$\iota$/min) required for each grade of work was expressed as y=3.34x+5.99, $s_{y.x}=0.858$). 2. Oxygen pulse reached the highest value 2-5 minutes after the start of load carrying, and thereafter it decreased gradually to some extend as the load carrying was continued. Rate of decrease in the oxygen pulse was greater in lighter works. 3. In lighter works requiring less than $2.0\iota/min$ of oxygen uptake, no difference in oxygen pulse could be seen between methods of carrying even when the same amount of load was carried. In heavier works requiring more than $2.0\iota/min$ of oxygen uptake, oxygen pulse was larger in case of carrying a load by embrace, in both hands and on head than on back or on shoulder.

• 한국강구조학회 논문집
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• 제18권4호
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• pp.481-490
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• 2006

지진의 피해를 입은 후 건물의 실제 성능은 많은 요인에 영향을 받는다. 신축 구조물이나 기존 구조물의 지진 성능 예측은 복잡하다. 그 이유는 고려되어져야 하는 많은 요소와 지진 반응의 복잡성뿐만 아니라 이러한 예측과 관련된 타고난 불확실성 과 가변성 때문이다. 본 연구의 목적은 구조물의 능력 평가와 반응 요구에서의 불확실성과 가변성의 적절한 취급과 결합이다. 일관된 방법으로 demand와 capacity에서의 불확실성과 가변성을 설명하기 위하여 신뢰성 이론에 기초한 성능평가의 접근 방법이 초고층 철골 건축물의 내진성능평가 법으로 채택되어져 오고 있다. 신뢰성 이론에 근거한 내진성능평가에 대한 기본 체계와 통계적 연구에 대한 핵심 요소를 요약하였다. dema nd 요소와 capacity 요소의 통계적인 분석을 위하여 국내 기준에 맞는 전형적인 초고층 철골 건축물을 36개 설계하였다. global drift capacity 산정을 위해 철골 모멘트 골조 건물을 증분동해석 하였다.

• 한국미생물·생명공학회지
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• 제28권2호
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• pp.111-116
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• 2000

Cordyceps scarabaeicola KEFC-C252 균사체의 배양으로 생산되는 천연색소의 생산조건 및 색소의 정제방법을 조사하였으며, 분리된 색소의 항돌연변이 효과를 조사하였다. 색소의 생산에 적합한 배지는 1.5% sucrose, 2.5% yeast extract, 초기 pH5.5였다. Cordyceps scarabaeicola KEFC-C252를 $26^{\circ}C$에서 108시간 배양한 후에 색소생산이 최대에 달하였으며, 최적조건에서 Cordyceps scarabaeicola KEFC-C252는 1.2 g/liter의 색소를 생산하였다. 색소는 ethylacetate 추출, 산침전 및 결정화과정을 거치면서 정제하여 황색의 육각기둥 모양의 결정을 얻었다. 분리된 색소는 용액의 pH 변화에 따라 색상이 변하는 특성을 나타내었는데 알칼리성 용액에서 청색, 산성 용액에서 붉은색을 나타내었다. 분리된 색소는 4-NQO로 유도된 돌연변이를 억제하는 항돌연변이원성 물질이었다. 또 분리된 색소는 Salmonella typhimurium TA98과 TA100에서 자발적 돌연변이를 감소시켰다.

• 한국콘텐츠학회논문지
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• 제20권8호
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• pp.674-684
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• 2020

하수의 종류(생활하수, 축산폐수) 및 다양한 처리 공정에 따른 미생물군집구조를 비교하기 위해 A2O공법으로 운영되는 생활하수처리시설(안심·서부·신천)의 10개 생물학적 반응조와 축산폐수처리시설의 활성슬러지를 채취해 DNA 유전체를 추출한 후 세균은 프라이머 27F/518R, 고세균의 경우, 프라이머 Arch519F/A958R를 이용해 유전체를 증폭시켰고 그 염기서열을 Roche 454 GS-FLX Titanium을 이용한 pyrosequencing 법으로 분석하였다. 그 결과, 생활하수와 축산폐수에 따른 미생물 군집구조의 차이는 컸지만 A2O공법에 따른 산소 유무 등의 환경 변화와 관련된 군집구조의 변화는 크지 않았다. 혐기조 및 무산소조 반응조들에서만 분석한 고세균 군집 결과에서는 동일 하수처리시설의 반응조들의 고세군군집들끼리만 모이는 하수처리시설별 집괴현상을 나타냈다. 세균다양성 및 종 풍부도가 높은 서부처리시설이 다른 시설보다 더 높은 질소 및 인 제거율을 나타냈다.

• 기술사
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• 제28권4호
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• pp.14-20
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• 1995

Discourses on global environment are not only limited to the matter of simple environmen-tal protection but also going to an imperative that every country should take the environ-mental aspects into more consideration, and if necessary even proceed to modify its own strategies for economic growth. It is because scores of existing International conventions and agreements on environmental caused tend to combine the environmental issues with trade sanctions and financial assistances in order to ensure a mandatory power in pushing themselves through on a global dimension. Particularly noteworthy is the so -called Green Round(GR) which substantially associates the Issues of environmental protection with some sanctions in international trade, its rationale is quite simple. The differentiated production costs rising from the difference in environmental standards among different countries may affect national competitiveness in in-ternational trade, therefore a need does exist to countervail this difference. In reality, however, severe dissention seems to have been exposed between the developed and developing countries around this matter, because national interests and priorities in national goals considerably differ among respective countries. Greenhouse gases such as carbon dioxide which caused global warming are mostly released from the combustion of fossil fuels. The perfect removal of released $CO_{2}$ is impossible with existing technologies, and moreover, it's not payable in economical terms. Therefore it will be more effective and desirable to make more efforts to prevent the release of the $CO_{2}$ it- self through energy conservation involving the development and promotion of clean and high-efficient energy technologies and energy sources, and the development and promotion of new & renewable energy resources, and so on. One of important national tasks In our country is to establish an Energy Policy consider-ing environmental impacts since Korea depends most of its energy consumption on the fossil fuels such as oil and coal.