치관보철용 글라스 세라믹 재료에서 ZrO₂첨가에 따른 생체적합성에 관한 연구

정인성,김형일,박성수,박희찬 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.3

Glass ceramics for dental crown prosthesis were prepared by crystallization of CaO-MgO-SiO₂-P₂O5-TiO₂glasses. The crystallization behaviors of samples have been investigated as a function of heat-treated temperature, holding time and chemical composition with their mechanical properties, were studied. It was found that appropriate addition of alumina and zirconia increased the bending strength of samples. The bending strength of the sample nucleated at 775℃ for 3 h and then crystallized at 1050℃ for 2 h under vacuum followed by heat-treated at 960℃ for 3min under vacuum was approximately 406.7㎒ that was highest value among the samples. SC2Z2 glass ceramics had 4.3∼4.6×10-6/℃ thermal expansion coefficient. SC2Z2 glass ceramics held structural stability in simulated body fluid (SBF) solution.

경희대학교 서울캠퍼스 진입로 및 주변 보행공간 기본계획

김동찬,김영준,마원,김충희,노경식,이가영 경희대학교 부설 디자인연구원 2008 예술· 디자인학연구 Vol.11 No.1

Kyung-Hee University in Seoul accept changing of education environment to deal with World's information technology society so that school had preparing the Masterplan to grow up campus's vision since 2006th. Finally we finish up this plan. However, realization of the Masterplan need a lot of financial resources, much times and phases in improvement. Especially, our school needs symbolized business in 2009 due to school of 60th anniversary. So we made a plan that to construct by design which is going to reshape campus's main road and westside afforest place for future. As a result, purpose of research is to improve an atmosphere conducive to academic pursuit, to show up greatness of school and to deal with changing school's environment rapidlly. That is why the Masterplan is trying to find school of superb scenic and developing of environment to congratulate of our school's 60th anniversary main approach and walking spaces.

치관보철용 글라스 세라믹 재료에서 조성비 변화에 따른 기계적 특성에 관한 연구

정인성,김형일,박성수,최경남,안진모,박희찬 대한치과기재학회 1999 대한치과재료학회지 Vol.26 No.1

Glass ceramics for dental crown prosthesis were prepared by heat-treatment of CaO-MaO-SiO₂-P₂O -TiO₂glasses. The crystallization behaviors of samples have been investigated as a function of heat-treated temperature, holding time and chemical composition with their mechanical properties. From the experiment, the following results were obtained: The nucleation rate of apatite increased with increasing CaO or P₂O and decreasing MgO or TiO₂. Vickers hardness and bending strength of samples increased with increasing MgO or TiO₂ and decreasing CaO or P₂O. Vickers hardness of samples increased due to the precipitation of apatite, whitlockite, β-wollastonite, magnesium titanate, and diopside crystal phases within glass matrix. The final crystalline phase assemblages and the microstructures of the samples were found to be dependent on glass compositions, heat-treatment temperature, and holding time.

경희대학교 국제캠퍼스 걷고 싶은 거리 조성계획

김동찬,김영준,마원,김충희,노경식,이가영 경희대학교 부설 디자인연구원 2008 예술· 디자인학연구 Vol.11 No.1

Kyung-Hee University Global Campus accepted changing of education environment to adapt to the World's information technology society so that school has been preparing the Master plan to grow up campus's vision since 2007. However, realization of the Master plan need a lot of financial resources, much times and phases in improvement. Especially, our university needs symbolized business in 2009 due to the 60th anniversary of our university. Based on this we want to improve the main entrance road environment from school gate to the school of international management and reconstruct the spatial environment beside the main road. The purpose of this research is to construct a pedestrian space environment and reconstruct the campus environment which adapt to the new times' demands. That is why the Master plan is trying to find the landscape scenic which adapts to our school' s main entrance space and the improvement method about the pedestrian space of the Global campus to congratulate of our university's 60th anniversary.

모발의 부위별 분석을 통한 Methamphetamine 남용자의 복용시기 추정에 관하여

유영찬,정희선,최화경,진원택,이한선 內務部 國立科學搜査硏究所 1996 國立 科學 搜査 硏究所 年報 Vol.28 No.-

발달장애유아의 언어행동발달 연구

김춘희,변찬석,서경희,유은정,이효신,전헌선,최성규 大邱大學校 特殊敎育·再活科學硏究所 2000 特殊敎育硏究 Vol.23 No.1

본 논문은 발달장애유아 언어행동발달 컨텐츠 개발에 요구되는 기초연구로써 연구의 이론적 바탕을 확립하고자 하였다. 연구에 사용된 방법은 문헌조사 방법 및 현장 인터뷰기법을 병행하였다. 본 연구의 주된 목적은 크게 3가지로 구분된다. 첫째, 발달장애유아의 가정 내 교육 욕구를 분석하고자 하였다. 둘째, 발달장애유아의 언어발달 양상을 검토하고자 하였다. 세 번째 목적은 유아의 언어행동발달 컨텐츠 구성의 주요 지침을 설정하고자 하였다. 이상의 연구목적에 따른 연구결과를 요약하면 다음 몇 가지로 제시된다. 1.가정 내 부모-유아간 관계형성이 우선 고려 되어야하고, 이에 따른 상호작용은 발달적 애착형성이 가능한 방향으로 정립되어야한다. 2.발달장애유아의 언어행동발달양상을 검토한 결과에 따르면, Piaget는 언어행동발달에 있어 감각운동기적 환경탐색 기능을 강조하고 있고, 이는 현재까지 중요한 유아 발달의 기저로 정착되었다. 따라서, 발달장애유아의 언어행동발달을 위한 컨텐츠 개발 내용에 있어서도 이러한 기저에 충실함이 합리적이다. 3.발달장애유아들에게는 언어행동 양상의 갈래가 크게 운동장애 및 감각결함으로 나누어질 수 있으므로, 이 두 가지 갈래의 각기 다른 특성이 컨텐츠 구성에서 충분히 고려되어야한다. 4.자폐성과 같은 중증 전반적 발달장애 유아를 위한 언어행동발달 컨텐츠 구성에서 특히 고려해야 할 두 가지 요소는 모방행동기능과 반복단순훈련기능 향상으로 결론지을 수 있다. This article planed to establish the theoretical foundations of the research as a basic study needed for developing the contents of verbal(language) behavior development for the infants with developmental disabilities. The methods used in the study was previous literature researches and interviews with subjects. The purposes of the study were divided into three parts. First, it was to analyze the educational needs of the infants with developmental disabilities in home settings. Second, it was to review and discover the language patterns of the infants with developmental disabilities. The third purpose was to devise the major guidelines of their language development's contents. The results of the study were described as the followings. 1.The relationships between the infants with developmental disabilities and their parents and their interactions should move to build the developmental attachments between them. 2.According to the literature findings of their language development patterns, Piaget concentrated on the functions of sensory motor environmental exploring in the language behavior development. The functions have been settled down into the important foundation for the infants' development. Thus, it was resonable that the content's development of the language behaviors for the infants with developmental disabilities should based on the function addressed by Piaget. 3.The language behaviors' patterns of the infants with developmental disabilities generally were classified into motor disabilities and sensory defect(deficiency). Therefore, the two factors should be considered for the constructions of the contents. 4.Constructing the contents of the language behavior developments for the infants with severely pervasive developmental disabilities such as autism, the improvements of two functions, imitative behavior and repetitive simple training should be considered.

악성 혈액질환에서 성공적인 동종골수이식 후 숙주 기질 미세환경의 구축

조상희,이제중,남찬은,최경상,정익주,이일권,김진희,박종태,김형준 대한조혈모세포이식학회 2002 대한조혈모세포이식학회지 Vol.7 No.1

인체의 골수는 간엽모세포를 함유하고 있으며 이들은 골수미세환경의 주된 세포들로 분화가 가능하여 조혈기능을 지지한다. 본 연구에서는 성별이 다른 동종조혈모세포이식 환경에서 조혈모세포의 완전 생착을 보이고, 이식 후 1년에서 8년이 지난 11예의 재생불량성 빈혈 및 백혈병 환자들을 대상으로 하여 골수에서 MSC를 분리하고 체외 확장을 통해 배양된 MSC에서 X 염색체 탐식자를 이용한 FISH 및 microsatellite polymorphism PCR 기법으로 그 기원을 확인하였다. 그 결과 조혈모세포는 완전히 공여자 기원으로 대치되었음에도 불구하고 MSC는 모두 수여자 기원임을 알 수 있어, 동종조혈모세포이식에서 미세환경의 구축은 수여자의 자가 생산에 의한 골수 간질세포에 의한 것으로 생각된다. Background: Human bone marrow (BM) contains mesenchymal stem cells (MSC) that can differentiate into various cells of mesenchymal origin. It remains a matter of controversy whether donor-derived stromal cells are capable of engraftment following hematopoietic stem cell transplantation (HSCT) or not. Methods: To determine if donor-derived stromal cells are transferred to the recipients of allogeneic HSCT, we investigated the characterization of MSC in 11 patients 1 to 8 years after sex mis-matched allogeneic HSCT in severe aplastic anemia and leukemia. Results: All patients had complete engraftment with donor- derived stem cells as shown by detection of donor type DNA in peripheral blood mononuclear cells. Following culture, MSC showed the expression of SH2 and SH4, but none of the hematopoietic markers of CD14, CD34, or CD45. MSC which can be differentiated to osteogenic lineage showed the genotype of recipient completely using FISH or PCR analysis. Conclusion: This study confirmed that MSC isolated from recipients of allogeneic HSCT in severe aplastic anemia and leukemia are not of donor genotype despite of full hematopoietic engraftment with donor type. Donor cells did not contribute to reconstitute the marrow microenvironment.

제38회 국제법화학회 참석기

유영찬,박유신,정희선,이상기 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

부천시 중동대로 가로 정비계획

김동찬,김충희 경희대학교 부설 디자인연구원 2007 예술· 디자인학연구 Vol.10 No.1

People living in urban areas are getting more and more interested in their leisure time, as their quality of life is getting improved. Therefore, people looking for parks are increasing. This phenomenon caused a change of the concept of the streets from the emphases in cars to human. Therefore, streets need to have their own characteristics and beauty. In this study, i choose Joong-Dong Road maintenance and improvement Plan in Bu-Cheon to propose a street which is unique.

동진강 유역의 농업활동에 의한 수질변화와 실측부하량

원찬희,정팔진,김민정,현미희,박정훈,송재환 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

The entire duration of the research work was from December-2000 to July-2002. Site measurement were conducted during various season, in a dry season(December), in rainfall, in seed-sowing time and also collecting data from the rural public organizations related to water management was done and examined during the mid of research work. Generally, the Dong Jin River watershed contains small three Creeks, KoBu, DongJin(including JeongEup and ChilBo, WonPyong). It was further divided into 32 sub-watersheds which comprises of further 5, 18, 9 watersheds in the creeks respectively. Inflow loading to the river was calculated from measurement of general water quality and quantity and these field surveys were made thrice times in agricultural drainage channels, where fertilizers and pesticides leaching from the surface have an direct effect for the deterioration of the several creek and river. Estimation of contaminant loading has been done by using unit loading based on the notification No. 1999 - 143 of the Ministry of Environment. Most of estimated loading data reported during the research work were slightly higher when compared with the notification of the Ministry but they do not have any significant effect. It was assumed that sub-watersheds have considerable field survey loading data, which were affected due to non-point source pollution load as compared to point source. For investigation of surface rainfall ranging from .50㎜ during non-farming or .10 rainfall on the period of farming, BOD loadings in the field during farming showed slightly higher levels in comparison with discharge loadings, T-N also showed the similar trend as discussed earlier.