Sarcomatoid Carcinoma Arising from Mature Cystic Teratoma

Ho-Chang Lee1, Seung-Myoung Son, Yong-Moon Lee, Ji Hae Koo, Song-Yi Choi, Ok-Jun Lee, Eun-Hwan Jeong 충북대학교 동물의학연구소 2012 Journal of Biomedical and Translational Research Vol.13 No.2

Malignant transformation of mature cystic teratoma (MCT) is rare. Sarcomatoid carcinoma is a neoplasm comprising malignant mesenchymal cells and a conventional carcinomatous area. Here, we report on a case of sarcomatoid carcinoma arising from an MCT in the left ovary of a 45-year-old female. A unilocular cyst consistent with MCT was observed; however, a nodule within the cyst was confirmed from the resected ovary. Microscopically, the nodule showed both squamous cell carcinoma and pleomorphic sarcomatous components admixing with each other. Lining epithelial cells at the periphery of the main tumor showed squamous metaplasia. When a sarcomatous component is observed in the ovary tumor, it is important to find a squamous cell component, either benign or malignant.

1~2기 본태성 고혈압 환자들에서 Imidapril 대 Enalapril의 항고혈압 효과를 평가하기 위한 무작위, 이중맹검 임상시험

최영진,손대원,김용진,이홍자,채인호,김효수,김철호,오병희,이명묵,박영배,채윤식,이영우 대한순환기학회 1999 Korean Circulation Journal Vol.29 No.11

인터넷 벤처비즈니스 평가체계에 관한 연구

이명호,이우형,손성혁 한국경영과학회 2001 韓國經營科學會誌 Vol.26 No.3

Riding on the wave of the information technology revolution, a slew of internet venture businesses(IVB) came into being. Hence, one of the recent deveopments in Korean capital market has been the proliferation of IVB, which is in accordance with the worldwide trend of 'new economy'. Although the fair valuation is crucial for the nourishment of IVB. It is difficult to apply traditional valuation methods to these firms without reservation. It is due to the facts that most venture firms have little records of performance, grow unprecedently fast, and have highly uncertain future. The main purpose of this study is to suggest performance evaluation system of IVB and to develop KPI(Key Performance Indicators). Our empirical study is based upon Kaplan & Norton's Balance Scorecard (BSC) approach. Specifically, our research has been conducted by the following two subsequent procedures: Firstly, seven internet venture firms have been selected and their executives have been interviewed by FGI(Focus Group Interview) method. Based upon these results, performance indicators been developed. Secondly, by using the above mentioned BSC items(i.e., financial perspective, customer perspective, internal perspective and innovation & learning perspective), questionnaires have been costructed and sent to IVB through e-mail as well as over the Fax. Among the collected 110 samples, reliable 106 samples have been used to build BSC model and to draw our conclusion. In the future study. It would be much better to consider the role of strategy in IVB and the causal relationships among Key Performance Indicators of BSC.

접착제와 와동형성의 차이에 따른 5급 복합레진 수복의 전향적 임상연구

이경욱,정세준,한영철,손호현,엄정문,오명환,조병훈 大韓齒科保存學會 2006 Restorative Dentistry & Endodontics Vol.31 No.4

본 연구의 목적은 복합레진을 이용한 비우식성 치경부 5급 병소 수복에 있어서, 3가지 다른 접착제를, 유지구를 부여한 치아와 부여하지 않은 치아에 적용하였을 때의 임상적인 효능의 차이를 비교하기 위함이다. 총 150개의 치아를 각각 25개씩 6개의 군으로 나누었다. A군 Scotchbond Multi-Purpose (SBMP, 3M ESPE, St, Paul, MN, USA, 4세대 접착제)를 사용하고 유지구를 부여하지 않음. B군: SBMP를 사용하고 유지구를 부여. C군: BC Plus (Vericom Co., Anyang, Gyeonggido, Korea, 5세대 접착제)를 사용하고 유지구를 부여하지 않음. D군: BC Plus를 사용하고 유지구를 부여. E군: Adper Prompt (3M ESPE, Seefeld, Germany, 6세대 접착제)를 사용하고 유지구를 부여하지 않음. F군: Adper Prompt를 사용하고 유지구를 부여. 모든 치아는 복합레진인 Denfil(Vericom Co., Anyang. Gyonggido. Korea)을 이용하여 충전하였다. 수복 직후와, 수복 6개월 후에 modified USPHS (United States Public Health Service) criteria에 따라 수복물을 임상적으로 평가하였다. 추가적으로 임상사진을 촬영하였으며, 에폭시 레진을 이용하여 복제한 후 주사전자현미경을 이용하여 이를 관찰하였다. 6개월 후 관찰 결과. alpha rating의 수가 각 실험군마다 동일하지는 않았지만, 통계적으로는 3가지의 접착제간에 유의할만한 차이는 없었고, 기계적인 유지구를 부여한 군과 부여하지 않은 군 간에도 유의할만한 차이는 없었다 (p > 0.05). 그러나 6개월의 관찰 기간은 일반적으로 기대되는 레진의 수명보다 짧기 때문에, 각 실험군 간의 차이를 알아보기 위해서는 추후 더 오랜 기간의 관찰이 요구된다. The purpose of this study is to evaluate prospectively the effect of different bonding systems and retention grooves on the clinical performance of resin restorations in non-carious cervical lesions (NCCLs). Thirty nine healthy adults who had at least 2 NCCLs in their promolar areas were included in this study. One hundred and fifty teeth were equally assigned to six groups; (A) Scotchbond Multi-Purpose (SBMP, 3M ESPE, St, Paul, MN, USA, 4th generation bonding system) without retention grooves; (B) SBMP with retention grooves: (C) BC Plus (Vericom Co., Anyang, Gyeonggido, Korea, 5th generation bonding system) without retention grooves; (D) BC Plus with retention grooves; (E) Adper Prompt (3M ESPE, Seefeld, Germany, 6th generation bonding system) without retention grooves: (F) Adper Prompt with retention grooves. All cavities were filled with a hybrid composite resin, Denfil (Vericom Co., Anyang, Gyeonggido, korea) by one operator. Restorations were evaluated at baseline and at 6-month recall, according to the modified USPHS (United states Public Health Service) criteria, Additionally, clinical photographs were taken and epoxy resin replicas were made for SEM evaluation. At 6-month recall, there were some differences in the number of alpha ratings among the experimental groups. But, despite the differences in the number of alpah ratings, there was no significant difference among the 3 adhesive systems (p > 0.05). There was also no significant difference between the groups with or without mechanical retention (p > 0.05). Follow-ups for longer periods than 6 months are needed to verify the clinical performance of different bonding systems and retention grooves. 〔J Kor Acad Cons Dent 31(4):300-311, 2006〕

치기공과 임상실습교육 실태 조사

이화식,배봉진,박명호 대구보건대학 2005 대구보건대학 論文集 Vol.25 No.-

This study was conducted by collecting and analyzing curricula of 19 colleges that has the department of dental laboratory technology throughout the country and analyzed by use of a questionnaire designed by the researcher with regard to details of actual operation in each college. Credit points for clinical training that has been conducted based on curricula vary from 3 to 20 points depending on colleges. But around 10 credit points are considered as ideal. For evaluation, the evaluation table was not applied but used as reference only. As criteria for evaluation such as evaluators, evaluation items and criteria for point distribution do not provide objectivity or reliability, development of accurate evaluation tools is required. It dis necessary for the bodies of colleges to maintain a level of mutual trust by visiting the sites of practical training regularly for the formation of progressive industry-academia cooperative relationships. When selecting the sites of practical training, it would be desirable to look for sites with better conditions for practical training in conjunction with related institutions. Besides, regarding clinical training education, in order for students to adapt themselves correctly to work environments and rapidly cultivate practical capabilities at site, systematic and efficient operation of training sites is required.

Porter의 산업구조분석모형을 이용한 TFT-LCD 사업매력도 분석

이선규,이웅희,서명지,허연호,홍민정 금오공과대학교 산업기술개발연구원 2001 産業技術開發硏究 Vol.17 No.-

This study examined the key success factors and the degree of industry attractiveness in the TFT-LCD industries. The five competitive force factors include: barriers o entry, industry rivalry, threat of substitutes, supplier power and buyer power. As the result of this study, it was found that the key success factors were customer needs, high screen quality, low price, high performance, convenience and stability concerning with display device. This study provides another link in the chain of understanding of the industry attractiveness and key success factors in the TFT-LCD markets.

齒科技工物 製作原價의 調査分析

이상락,박명호 대구보건대학 2002 대구보건대학 論文集 Vol.22 No.-

Dental prosthetic restoration shows a big difference of cost per itemized unit depending on the size of dental labs, facility standard, manpower, and performance. Even the same dental labs have distinctive cost according to manufacturing performance, inflation, and the number of workers. However, in spite of such a change of circumstances, it appears to be quite stable in the relative cost per itemized unit unless the manufacturing trend of particular item changes dramatically. Therefore, if the relative number of cost per itemized unit, which is produced by costing, is indicated, we are able to utilize it effectively as a standard wage estimate. If the wage of dental prosthetic restoration is determined on the basis of cost, it is desirable that the relative value of cost and that of wage are identical. But, by means of comparative analysis, since the relative value of wage reveals mostly lower than that of cost depending on an item, it is considered that the wage is not reflecting the cost appropriately. Due to the subdivision and the profession of medical technology, the new development of wage items for dental prosthetic restoration is required. This means that the need for the establishment of new wage items should be presented as the general concept of dental prosthetic restoration changes and the level of pathologic technology increases. The current wage structure has differences in the degree of difficulty according to unit items and in the cost factors. Nevertheless, the differences are not reflected enough to the wage, so there is a potential to lower the medical quality through the use of low-price materials to avoid the increase of cost and the work process which skips a manufacturing step. The new items of dental prosthetic restoration also increases, but the development of proper numerical value system is not supported. Thus, the right price is set mostly by applying to the wage of a similar item. Since most wages are established by an individual agreement between the dental clinic institute and the dental labs, the propriety of wage level lacks. Therefore, it is urgent to provide and promote the system of a fair work charge by a standard cost which can be applied to all medical institute.

첨가제가 Mn-Zn 페라이트의 자기적 성질에 미치는 효과

이명호,김민경,고재귀,송승기 명지대학교 자연과학연구소 2004 자연과학논문집 Vol.23 No.-

우리 연구는 첨가제가 페라이트에 미치는 효과를 연구하기 위해 두 종류의 서로 다른 금속이온을 첨가제로 한 Mn-Zn 페라이트 시료를 제작하여 이들의 자기적 성질을 비교 분석하였다. 시료 제작에 사용된 Mn-Zn 페라이트의 주 원료 조성비는 31 mol% MnO, 16 mol% ZnO 그리고 53 mol% Fe_(2)O_(3)이다. 볼밀 작업을 통해 주 원료를 잘 혼합한 후 950℃에서 3시간 동안 하소하였다. 하소된 재료에 실험에 필요한 첨가물을 혼합한 뒤 성형과정을 거쳐 1300℃에서 3시간 동안 소결하였다. 첨가물은 0.1 wt% Na_(2)SiO_(3)만을 사용한 경우 (Sample 1)와 0.05 wt% Na_(2)SiO_(3), 0.1 wt% CaO와 0.05 wt% Al_(2)O_(3)를 첨가한 (Sample 2) 두 종류의 첨가제를 이용하였다. 두 시료에 대한 자성 특성을 측정한 결과 Sample 2 시료가 Sample 1에 비해 포화자속밀도(saturation flux density) B_(8)는 더 커진 반면 잔류자속밀도(residual flux density) B_(1)과 보자력(coercive force) H_(6)는 더 적어졌음을 확인하였다. 또한 고주파 측정에서도 0.05 wt% Na_(2)SiO_(3), 0.1 wt% CaO와 0.05 wt% Al_(2)O_(3)가 첨가된 시료에서 주파수 증가에 따르는 자기손실이, 다른 시료에 비해, 매우 완만하게 증가하는 것을 관찰하였다. 이들 자기 측정으로부터 0.05 wt% Na_(2)SiO_(3), 0.1 wt% CaO와 0.05 wt% Al_(2)O_(3)의 첨가제가 Mn-Zn 페라이트의 연자성 특성을 향상시켯음을 확인하였고, 이 결과는 이들 첨가물이 소결(sintering)과정에 관하여 Mn-Zn 페라이트 미세구조의 치밀화와 입자성장을 촉진시키는 효과가 있음을 보인다. We prepared two kinds of Mn-Zn ferrites composed of 31 mol% MnO, 16 mol% ZnO and 53 mol% Fe_(2)O_(3) as a main material. These were well mixed in a ball-milling machine and calcinated at 950℃ for 3 hours. After being mixed with two kinds of additives of 0.1 wt% Na_(2)SiO_(3) (Sample 1) and 0.05 wt% Na_(2)SiO_(3), 0.1 wt% CaO and 0.05 wt% Al_(2)O_(3) (Sample 2) respectively, the materials were molded and sintered at 1300℃ for 3 hours. The sample 2 was found to have more saturation flux density, and less residual flux density and coercive force than the other one, which means that the sample 2 is more suitable for soft-magnetic material. When the samples were applied by AC magnetic field in the frequency range of 10 kMz~1 MHz, both have shown relatively stable initial permeabilities up to 1 MHz. On the other hand, the loss factof of sample 2 became less than that of sample 1 in the high frequency range above 100 kHz although there was no much difference in the resistivity of both samples through the frequency change, which suggests the additives in the sample 2 has suppressed the viscosity loss in the high frequency range. We conclude that the 0.05 wt% Na_(2)SiO_(3), 0.1 wt% CaO and 0.05 wt% Al_(2)O_(3) additives has promoted coarsening and densification of the microstructure of the Mn-Zn ferrite and resulted in the better quality of the Mn-Zn ferrite

마케팅 촉진을 위한 고객정보의 체계화 방안

이청림,이명호,김태호 한국경영과학회 2002 經營 科學 Vol.19 No.2

As the business structure of many industries changes under IT progress and internet economy, the customer information has emerged a key factor in setting up the management policy. The customer has come to replace the product as a central figure in business competition. The domestic life insurance market has also experienced the rapid structural changes in IT time. The competition in the insurance industry to maintain the existing membership and to attract the new members gets stronger under such a new business circumstance. Accordingly, it is necessary for an individual insurance company to develop a systematic marketing plan, based on the customer information, to be competitive in the market. Unlike other studies in which customer characteristics are neglected, this study attempts to utilize the customer information by applying the data mining technique, and then suggests an efficient marketing strategy that could prevail in the competitive business environment.

단편 소설의 낱말 교육 자료 연구 : 「논 이야기」외 3편의 낱말을 중심으로

이희중,노일환,최명엽,신동일,이준호 전주대학교 교육문제연구소 2001 敎育論叢 Vol.16 No.-